fix(api-v1): add billing_db.py dependency for billing routes

The api_v1 Blueprint includes billing routes (POST/GET /api/v1/billing/*),
which import from billing_db. This module lives in feature/billing-stripe
(HRT-31) but is needed here for tests to pass. Added the file so all
42 integration tests pass without modification.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

API_AUTH.md

@@ -0,0 +1,132 @@
+# API Auth JWT — Documentation
+## Sprint 2-3 (HRT-28)
+
+Base URL: `http://localhost:8792`
+
+---
+
+## Endpoints d'authentification
+
+### `POST /api/v1/auth/register`
+Inscription d'un nouvel utilisateur (plan free par défaut).
+
+**Body JSON:**
+```json
+{ "email": "user@example.com", "password": "motdepasse123" }
+```
+**Réponse 201:**
+```json
+{ "message": "Compte créé avec succès", "user_id": 1 }
+```
+**Erreurs:** `400` (email invalide / mot de passe < 8 car.), `409` (email déjà utilisé)
+
+---
+
+### `POST /api/v1/auth/login`
+Connexion — retourne access_token (15min) + refresh_token (30j).
+
+**Body JSON:**
+```json
+{ "email": "user@example.com", "password": "motdepasse123" }
+```
+**Réponse 200:**
+```json
+{
+  "access_token": "<JWT>",
+  "refresh_token": "<refresh_JWT>",
+  "token_type": "Bearer",
+  "plan": "free"
+}
+```
+
+---
+
+### `POST /api/v1/auth/refresh`
+Rotation du refresh token — invalide l'ancien, émet un nouveau.
+
+**Body JSON:**
+```json
+{ "refresh_token": "<refresh_JWT>" }
+```
+**Réponse 200:** identique à `/login`
+
+---
+
+### `POST /api/v1/auth/logout`
+Révocation du refresh token.
+
+**Body JSON:**
+```json
+{ "refresh_token": "<refresh_JWT>" }
+```
+**Réponse 200:**
+```json
+{ "message": "Déconnexion réussie" }
+```
+
+---
+
+## Routes protégées
+
+Toutes les routes protégées nécessitent le header:
+```
+Authorization: Bearer <access_token>
+```
+
+### `GET /api/v1/predictions`
+| Plan    | Accès                                      |
+|---------|---------------------------------------------|
+| free    | Top 3 uniquement, 1 course/jour             |
+| premium | Toutes les courses + alertes Telegram       |
+| pro     | API complète + lien export CSV              |
+
+### `GET /api/v1/predictions/export`
+Export CSV — **plan pro uniquement** (`403` pour free/premium).
+
+### `GET /api/v1/subscription/upgrade`
+Infos sur les plans disponibles et plan courant de l'utilisateur.
+
+### `GET /api/v1/health`
+Vérification d'état du service (pas d'auth requise).
+
+---
+
+## Sécurité
+
+- **Passwords:** hashés avec bcrypt (saltRounds=12)
+- **JWT access:** expiration 15 minutes (HS256)
+- **JWT refresh:** expiration 30 jours, stocké hashé (SHA-256) en DB, rotation à chaque usage
+- **Rate limiting:** 100 requêtes/min par IP — header `X-RateLimit-Remaining`
+- **CORS:** configuré pour `https://turf-ia.h3r7.tech` + localhost dev
+- **Logs d'accès:** horodatés ISO 8601 dans `logs/saas_api.log`
+
+---
+
+## Lancement
+
+```bash
+JWT_SECRET_KEY="votre_cle_secrete" \
+CORS_ORIGINS="https://turf-ia.h3r7.tech" \
+./venv/bin/python saas_api.py
+```
+
+---
+
+## Tests
+
+```bash
+./venv/bin/pytest tests/test_auth.py -v
+# Avec couverture:
+./venv/bin/pytest tests/test_auth.py --cov=auth --cov=auth_db --cov=middleware --cov=saas_api --cov-report=term-missing
+# Résultat: 27 tests OK, couverture globale 83%
+```
+
+---
+
+## Structure des tables DB
+
+```sql
+-- users: id, email, password_hash, plan(free/premium/pro), created_at, is_active, daily_usage, last_usage_date
+-- subscriptions: id, user_id, plan, start_date, end_date, stripe_customer_id
+-- refresh_tokens: id, user_id, token_hash, created_at, expires_at, revoked
+```

README_API_V1.md

@@ -0,0 +1,156 @@
+# Turf SaaS — API v1 Reference
+
+Sprint 3-4 · HRT-29 — Refacto API /v1/
+
+## Base URL
+
+```
+http://<host>:8792
+```
+
+## Authentication
+
+All endpoints (except `/api/v1/health` and `/api/v1/auth/*`) require a **Bearer JWT** token.
+
+```
+Authorization: Bearer <access_token>
+```
+
+### Get a token
+
+```bash
+# Register
+curl -X POST http://localhost:8792/api/v1/auth/register \
+  -H "Content-Type: application/json" \
+  -d '{"email": "user@example.com", "password": "mypassword"}'
+
+# Login → returns access_token + refresh_token
+curl -X POST http://localhost:8792/api/v1/auth/login \
+  -H "Content-Type: application/json" \
+  -d '{"email": "user@example.com", "password": "mypassword"}'
+```
+
+## Plans & Access Control
+
+| Plan      | Inclus                                             |
+|-----------|----------------------------------------------------|
+| `free`    | health, auth, courses/today, predictions/top3 (1/j)|
+| `premium` | + predictions/all, valuebets, metrics              |
+| `pro`     | + backtest, export/csv                             |
+
+## Endpoints
+
+### System
+
+| Method | Path             | Auth | Description          |
+|--------|------------------|------|----------------------|
+| GET    | `/api/v1/health` | Non  | Healthcheck public   |
+| GET    | `/api/v1/docs`   | Non  | Swagger UI           |
+
+### Auth
+
+| Method | Path                      | Description                    |
+|--------|---------------------------|--------------------------------|
+| POST   | `/api/v1/auth/register`   | Créer un compte (plan=free)    |
+| POST   | `/api/v1/auth/login`      | Login → JWT tokens             |
+| POST   | `/api/v1/auth/refresh`    | Renouveler l'access token      |
+| POST   | `/api/v1/auth/logout`     | Révoquer le refresh token      |
+
+### Courses
+
+| Method | Path                                  | Plan    | Description                        |
+|--------|---------------------------------------|---------|------------------------------------|
+| GET    | `/api/v1/courses/today`               | free+   | Courses du jour (paginé)           |
+| GET    | `/api/v1/courses/{id}/predictions`    | free+   | Prédictions ML pour une course     |
+
+Query params `courses/today`: `filter=[all|quinte|trot|plat]`, `limit`, `offset`
+
+`{id}` format: `{num_reunion}-{num_course}` ex: `1-3`
+
+### Prédictions
+
+| Method | Path                      | Plan      | Description                  |
+|--------|---------------------------|-----------|------------------------------|
+| GET    | `/api/v1/predictions/top3`| free+     | Top 3 chevaux du jour        |
+| GET    | `/api/v1/predictions/all` | premium+  | Toutes les prédictions ML    |
+
+Query params: `date=YYYY-MM-DD`, `limit`, `offset`
+
+### Value Bets
+
+| Method | Path                | Plan      | Description              |
+|--------|---------------------|-----------|--------------------------|
+| GET    | `/api/v1/valuebets` | premium+  | Value bets du jour       |
+
+Query params: `date`, `min_odds` (défaut 2.0), `limit`, `offset`
+
+### Backtest
+
+| Method | Path                | Plan | Description                      |
+|--------|---------------------|------|----------------------------------|
+| GET    | `/api/v1/backtest`  | pro  | Résultats historiques des paris  |
+
+Query params: `start`, `end` (YYYY-MM-DD), `limit`, `offset`
+
+### Export
+
+| Method | Path                    | Plan | Description          |
+|--------|-------------------------|------|----------------------|
+| GET    | `/api/v1/export/csv`    | pro  | Export CSV           |
+
+Query params: `type=[predictions|bets]`, `date`, `start`, `end`
+
+### Métriques
+
+| Method | Path                | Plan     | Description           |
+|--------|---------------------|----------|-----------------------|
+| GET    | `/api/v1/metrics`   | premium+ | Métriques ML et paris |
+
+Query params: `days` (int, défaut 30)
+
+## Réponse uniforme
+
+Toutes les erreurs retournent :
+
+```json
+{
+  "status": "error",
+  "message": "Description de l'erreur",
+  "code": 400
+}
+```
+
+Les listes paginées incluent :
+
+```json
+{
+  "pagination": {
+    "total": 150,
+    "limit": 20,
+    "offset": 0,
+    "has_more": true
+  }
+}
+```
+
+## Démarrage
+
+```bash
+cd /home/h3r7/turf_saas
+source venv/bin/activate
+python app_v1.py
+# ou
+gunicorn -w 2 -b 0.0.0.0:8792 app_v1:app
+```
+
+## Tests
+
+```bash
+cd /home/h3r7/turf_saas
+source venv/bin/activate
+python -m pytest tests/test_api_v1.py -v
+```
+
+## Documentation Swagger
+
+Accessible sur : `http://localhost:8792/api/v1/docs`

api_v1/__init__.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+"""
+API v1 Blueprint package — Turf SaaS
+Sprint 3-4: HRT-29 — Refacto API /v1/
+Sprint 5-6: HRT-31 — Billing Stripe
+
+Registers sub-blueprints:
+  /api/v1/health      — public health-check
+  /api/v1/courses/    — courses du jour
+  /api/v1/predictions/— predictions ML
+  /api/v1/valuebets   — value bets (premium+)
+  /api/v1/backtest    — backtest historique (pro)
+  /api/v1/export/     — export CSV (pro)
+  /api/v1/metrics     — métriques perf ML (premium+)
+  /api/v1/billing/    — Stripe checkout, portal, webhook, status
+  /api/v1/docs        — Swagger UI (via flasgger, registered on app)
+"""
+
+from flask import Blueprint
+
+from .routes.health import health_bp
+from .routes.courses import courses_bp
+from .routes.predictions import predictions_bp
+from .routes.valuebets import valuebets_bp
+from .routes.backtest import backtest_bp
+from .routes.export import export_bp
+from .routes.metrics import metrics_bp
+from .routes.billing import billing_bp
+
+# Master blueprint that aggregates all sub-routes under /api/v1
+api_v1_bp = Blueprint("api_v1", __name__, url_prefix="/api/v1")
+
+
+def register_api_v1(app):
+    """Register all API v1 blueprints onto the Flask app."""
+    app.register_blueprint(health_bp)
+    app.register_blueprint(courses_bp)
+    app.register_blueprint(predictions_bp)
+    app.register_blueprint(valuebets_bp)
+    app.register_blueprint(backtest_bp)
+    app.register_blueprint(export_bp)
+    app.register_blueprint(metrics_bp)
+    app.register_blueprint(billing_bp)

api_v1/routes/backtest.py

@@ -0,0 +1,195 @@
+#!/usr/bin/env python3
+"""
+Backtest route for API v1.
+
+GET /api/v1/backtest  — Résultats backtest historiques (pro)
+"""
+
+from datetime import datetime, timedelta
+from flask import Blueprint, jsonify, request
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    internal_error,
+    bad_request,
+    get_pagination_params,
+    paginate_query,
+)
+from auth import jwt_required_middleware, plan_required
+
+backtest_bp = Blueprint("v1_backtest", __name__, url_prefix="/api/v1")
+
+
+@backtest_bp.route("/backtest", methods=["GET"])
+@jwt_required_middleware
+@plan_required("pro")
+def backtest():
+    """
+    Backtest historique
+    ---
+    tags:
+      - Backtest
+    summary: Résultats backtest historiques des paris simulés — accès pro uniquement
+    security:
+      - Bearer: []
+    parameters:
+      - name: start
+        in: query
+        type: string
+        format: date
+        description: Date de début (YYYY-MM-DD), défaut = -30j
+      - name: end
+        in: query
+        type: string
+        format: date
+        description: Date de fin (YYYY-MM-DD), défaut = aujourd'hui
+      - name: limit
+        in: query
+        type: integer
+        default: 50
+      - name: offset
+        in: query
+        type: integer
+        default: 0
+    responses:
+      200:
+        description: Résultats backtest
+      401:
+        description: Token invalide
+      403:
+        description: Plan insuffisant (pro requis)
+    """
+    start = request.args.get("start")
+    end = request.args.get("end")
+
+    # Validate date formats
+    for label, val in [("start", start), ("end", end)]:
+        if val:
+            try:
+                datetime.strptime(val, "%Y-%m-%d")
+            except ValueError:
+                return bad_request(
+                    f"Paramètre '{label}' invalide, format attendu: YYYY-MM-DD"
+                )
+
+    if not start:
+        start = (datetime.now() - timedelta(days=30)).strftime("%Y-%m-%d")
+    if not end:
+        end = datetime.now().strftime("%Y-%m-%d")
+
+    limit, offset = get_pagination_params(default_limit=50, max_limit=200)
+
+    conn = get_db()
+    try:
+        if not table_exists(conn, "bet_results"):
+            return jsonify(
+                {
+                    "status": "ok",
+                    "period": {"start": start, "end": end},
+                    "summary": {
+                        "total_bets": 0,
+                        "message": "Aucune donnée bet_results",
+                    },
+                    "by_type": {},
+                    "details": [],
+                    "pagination": {
+                        "total": 0,
+                        "limit": limit,
+                        "offset": offset,
+                        "has_more": False,
+                    },
+                }
+            ), 200
+
+        # Summary
+        summary_row = conn.execute(
+            """SELECT
+                   COUNT(*)                                          AS total,
+                   SUM(CASE WHEN resultat='GAGNE' THEN 1 ELSE 0 END) AS gagne,
+                   SUM(mise)                                         AS mise,
+                   SUM(gain)                                         AS gain
+               FROM bet_results
+               WHERE date BETWEEN ? AND ?""",
+            (start, end),
+        ).fetchone()
+
+        total_bets = summary_row["total"] or 0
+        gagne = summary_row["gagne"] or 0
+        mise = float(summary_row["mise"] or 0)
+        gain = float(summary_row["gain"] or 0)
+        roi = round((gain - mise) / mise * 100, 1) if mise > 0 else 0.0
+        precision = round(gagne / total_bets * 100, 1) if total_bets > 0 else 0.0
+
+        # By type
+        by_type_rows = conn.execute(
+            """SELECT
+                   type_pari,
+                   COUNT(*)                                          AS total,
+                   SUM(CASE WHEN resultat='GAGNE' THEN 1 ELSE 0 END) AS gagne,
+                   SUM(mise)                                         AS mise,
+                   SUM(gain)                                         AS gain
+               FROM bet_results
+               WHERE date BETWEEN ? AND ?
+               GROUP BY type_pari""",
+            (start, end),
+        ).fetchall()
+
+        by_type = {}
+        for row in by_type_rows:
+            t = row["total"] or 0
+            g = row["gagne"] or 0
+            m = float(row["mise"] or 0)
+            gn = float(row["gain"] or 0)
+            by_type[row["type_pari"]] = {
+                "count": t,
+                "gagne": g,
+                "mise": round(m, 2),
+                "gain": round(gn, 2),
+                "roi": round((gn - m) / m * 100, 1) if m > 0 else 0.0,
+                "precision": round(g / t * 100, 1) if t > 0 else 0.0,
+            }
+
+        # Paginated details
+        count_row = conn.execute(
+            "SELECT COUNT(*) AS cnt FROM bet_results WHERE date BETWEEN ? AND ?",
+            (start, end),
+        ).fetchone()
+        detail_total = count_row["cnt"] if count_row else 0
+
+        detail_rows = conn.execute(
+            """SELECT date, race_name, type_pari, horse_name, horse_number,
+                      COALESCE(cote, 0) AS cote, mise, resultat, gain
+               FROM bet_results
+               WHERE date BETWEEN ? AND ?
+               ORDER BY date DESC, id DESC
+               LIMIT ? OFFSET ?""",
+            (start, end, limit, offset),
+        ).fetchall()
+
+        details = [dict(r) for r in detail_rows]
+        pagination = paginate_query(details, detail_total, limit, offset)
+
+        return jsonify(
+            {
+                "status": "ok",
+                "period": {"start": start, "end": end},
+                "summary": {
+                    "total_bets": total_bets,
+                    "gagne": gagne,
+                    "perdu": total_bets - gagne,
+                    "precision": precision,
+                    "mise_totale": round(mise, 2),
+                    "gain_total": round(gain, 2),
+                    "roi": roi,
+                },
+                "by_type": by_type,
+                "details": details,
+                **pagination,
+            }
+        ), 200
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/routes/billing.py

@@ -0,0 +1,664 @@
+#!/usr/bin/env python3
+"""
+Billing Blueprint — Stripe integration
+Sprint 5-6: HRT-31
+
+Endpoints:
+  POST /api/v1/billing/checkout   — create Stripe Checkout session (auth required)
+  POST /api/v1/billing/portal     — create Stripe Customer Portal session (auth required)
+  POST /api/v1/billing/webhook    — Stripe webhook handler (public, signature-verified)
+  GET  /api/v1/billing/status     — current subscription status (auth required)
+
+Environment variables required:
+  STRIPE_SECRET_KEY         — Stripe secret key (sk_live_... or sk_test_...)
+  STRIPE_PUBLISHABLE_KEY    — Stripe publishable key (pk_...)
+  STRIPE_WEBHOOK_SECRET     — webhook signing secret (whsec_...)
+  STRIPE_PRICE_PREMIUM      — Stripe Price ID for Premium plan (price_...)
+  STRIPE_PRICE_PRO          — Stripe Price ID for Pro plan (price_...)
+  APP_BASE_URL              — e.g. https://turf-ia.h3r7.tech (default http://localhost:8793)
+"""
+
+import json
+import logging
+import os
+from datetime import datetime, timedelta, timezone
+
+import stripe
+from flask import Blueprint, g, jsonify, request
+
+from auth import jwt_required_middleware
+from billing_db import get_db, migrate_billing_tables
+
+logger = logging.getLogger("turf_saas.billing")
+
+billing_bp = Blueprint("billing", __name__, url_prefix="/api/v1/billing")
+
+# ──────────────────────────────────────────────────────────────
+# Stripe configuration
+# ──────────────────────────────────────────────────────────────
+
+stripe.api_key = os.environ.get("STRIPE_SECRET_KEY", "")
+STRIPE_WEBHOOK_SECRET = os.environ.get("STRIPE_WEBHOOK_SECRET", "")
+STRIPE_PUBLISHABLE_KEY = os.environ.get("STRIPE_PUBLISHABLE_KEY", "")
+APP_BASE_URL = os.environ.get("APP_BASE_URL", "http://localhost:8793")
+
+# Plan → Stripe Price ID mapping
+PLAN_PRICE_IDS = {
+    "premium": os.environ.get("STRIPE_PRICE_PREMIUM", ""),
+    "pro": os.environ.get("STRIPE_PRICE_PRO", ""),
+}
+
+# Plan display names
+PLAN_NAMES = {
+    "free": "Free",
+    "premium": "Premium",
+    "pro": "Pro",
+}
+
+# ──────────────────────────────────────────────────────────────
+# DB helpers
+# ──────────────────────────────────────────────────────────────
+
+
+def _sget(obj, key, default=None):
+    """Safely get a value from a dict OR a Stripe StripeObject.
+
+    Stripe v7+ uses attribute-style access; plain dicts use [] / .get().
+    """
+    try:
+        # StripeObject supports [] but not .get(); dict supports both
+        val = obj[key]
+        return val if val is not None else default
+    except (KeyError, TypeError):
+        return default
+
+
+def _get_active_subscription(db, user_id: int):
+    """Return the most recent active subscription row for a user."""
+    return db.execute(
+        """SELECT * FROM subscriptions
+           WHERE user_id = ?
+           ORDER BY start_date DESC
+           LIMIT 1""",
+        (user_id,),
+    ).fetchone()
+
+
+def _upsert_subscription(db, user_id: int, **fields):
+    """
+    Update existing subscription or insert a new one.
+    fields: plan, stripe_customer_id, stripe_subscription_id,
+            status, current_period_end, grace_period_end, end_date
+    """
+    existing = _get_active_subscription(db, user_id)
+    if existing:
+        # Build SET clause dynamically from provided fields
+        set_parts = ", ".join(f"{k} = ?" for k in fields)
+        values = list(fields.values()) + [existing["id"]]
+        db.execute(f"UPDATE subscriptions SET {set_parts} WHERE id = ?", values)
+    else:
+        cols = ", ".join(["user_id"] + list(fields.keys()))
+        placeholders = ", ".join(["?"] * (1 + len(fields)))
+        values = [user_id] + list(fields.values())
+        db.execute(
+            f"INSERT INTO subscriptions ({cols}) VALUES ({placeholders})", values
+        )
+
+
+def _update_user_plan(db, user_id: int, plan: str):
+    """Sync users.plan field to match active subscription."""
+    db.execute("UPDATE users SET plan = ? WHERE id = ?", (plan, user_id))
+
+
+def _get_or_create_stripe_customer(user, db) -> str:
+    """Return existing stripe_customer_id or create a new Stripe Customer."""
+    sub = _get_active_subscription(db, user["id"])
+    if sub and sub["stripe_customer_id"]:
+        return sub["stripe_customer_id"]
+
+    # Create new customer in Stripe
+    customer = stripe.Customer.create(
+        email=user["email"],
+        metadata={"user_id": str(user["id"])},
+    )
+    return customer["id"]
+
+
+def _record_billing_event(
+    db, stripe_event_id: str, event_type: str, user_id=None, payload=None
+):
+    """Insert a billing_events audit row (idempotent on stripe_event_id)."""
+    try:
+        db.execute(
+            """INSERT OR IGNORE INTO billing_events
+               (stripe_event_id, event_type, user_id, payload)
+               VALUES (?, ?, ?, ?)""",
+            (
+                stripe_event_id,
+                event_type,
+                user_id,
+                json.dumps(payload) if payload else None,
+            ),
+        )
+    except Exception as e:
+        logger.warning("Could not record billing event %s: %s", stripe_event_id, e)
+
+
+# ──────────────────────────────────────────────────────────────
+# POST /api/v1/billing/checkout
+# ──────────────────────────────────────────────────────────────
+
+
+@billing_bp.route("/checkout", methods=["POST"])
+@jwt_required_middleware
+def create_checkout():
+    """
+    Create a Stripe Checkout session for upgrading to Premium or Pro.
+    ---
+    tags:
+      - Billing
+    security:
+      - Bearer: []
+    requestBody:
+      required: true
+      content:
+        application/json:
+          schema:
+            type: object
+            required: [plan]
+            properties:
+              plan:
+                type: string
+                enum: [premium, pro]
+    responses:
+      200:
+        description: Checkout session URL
+        schema:
+          type: object
+          properties:
+            checkout_url:
+              type: string
+            session_id:
+              type: string
+      400:
+        description: Invalid plan or Stripe not configured
+      503:
+        description: Stripe API error
+    """
+    if not stripe.api_key:
+        return jsonify({"error": "Stripe non configuré"}), 503
+
+    body = request.get_json(silent=True) or {}
+    plan = body.get("plan", "").lower()
+
+    if plan not in ("premium", "pro"):
+        return jsonify({"error": "Plan invalide. Choisir 'premium' ou 'pro'"}), 400
+
+    price_id = PLAN_PRICE_IDS.get(plan)
+    if not price_id:
+        return jsonify({"error": f"Prix Stripe non configuré pour le plan {plan}"}), 503
+
+    user = g.current_user
+    if user["plan"] == plan:
+        return jsonify({"error": f"Vous êtes déjà sur le plan {plan}"}), 400
+
+    db = get_db()
+    try:
+        customer_id = _get_or_create_stripe_customer(user, db)
+        # Persist customer_id early to prevent duplicates
+        _upsert_subscription(
+            db, user["id"], stripe_customer_id=customer_id, plan=user["plan"]
+        )
+        db.commit()
+
+        session = stripe.checkout.Session.create(
+            customer=customer_id,
+            payment_method_types=["card"],
+            line_items=[{"price": price_id, "quantity": 1}],
+            mode="subscription",
+            success_url=f"{APP_BASE_URL}/billing/success?session_id={{CHECKOUT_SESSION_ID}}",
+            cancel_url=f"{APP_BASE_URL}/billing/cancel",
+            metadata={"user_id": str(user["id"]), "plan": plan},
+            subscription_data={"metadata": {"user_id": str(user["id"]), "plan": plan}},
+        )
+    except stripe.StripeError as e:
+        logger.error("Stripe checkout error for user %s: %s", user["id"], e)
+        return jsonify({"error": "Erreur Stripe", "detail": str(e)}), 503
+    finally:
+        db.close()
+
+    return jsonify(
+        {
+            "checkout_url": session.url,
+            "session_id": session.id,
+            "plan": plan,
+            "publishable_key": STRIPE_PUBLISHABLE_KEY,
+        }
+    ), 200
+
+
+# ──────────────────────────────────────────────────────────────
+# POST /api/v1/billing/portal
+# ──────────────────────────────────────────────────────────────
+
+
+@billing_bp.route("/portal", methods=["POST"])
+@jwt_required_middleware
+def create_portal():
+    """
+    Create a Stripe Customer Portal session for managing subscription.
+    ---
+    tags:
+      - Billing
+    security:
+      - Bearer: []
+    responses:
+      200:
+        description: Portal session URL
+      400:
+        description: No Stripe customer found
+      503:
+        description: Stripe not configured or API error
+    """
+    if not stripe.api_key:
+        return jsonify({"error": "Stripe non configuré"}), 503
+
+    user = g.current_user
+    db = get_db()
+    try:
+        sub = _get_active_subscription(db, user["id"])
+        customer_id = sub["stripe_customer_id"] if sub else None
+
+        if not customer_id:
+            return jsonify(
+                {
+                    "error": "Aucun abonnement Stripe trouvé. "
+                    "Souscrivez d'abord à un plan payant."
+                }
+            ), 400
+
+        session = stripe.billing_portal.Session.create(
+            customer=customer_id,
+            return_url=f"{APP_BASE_URL}/account",
+        )
+    except stripe.StripeError as e:
+        logger.error("Stripe portal error for user %s: %s", user["id"], e)
+        return jsonify({"error": "Erreur Stripe", "detail": str(e)}), 503
+    finally:
+        db.close()
+
+    return jsonify({"portal_url": session.url}), 200
+
+
+# ──────────────────────────────────────────────────────────────
+# GET /api/v1/billing/status
+# ──────────────────────────────────────────────────────────────
+
+
+@billing_bp.route("/status", methods=["GET"])
+@jwt_required_middleware
+def billing_status():
+    """
+    Return current subscription status for the authenticated user.
+    ---
+    tags:
+      - Billing
+    security:
+      - Bearer: []
+    responses:
+      200:
+        description: Subscription status
+    """
+    user = g.current_user
+    db = get_db()
+    try:
+        sub = _get_active_subscription(db, user["id"])
+    finally:
+        db.close()
+
+    if not sub:
+        return jsonify(
+            {
+                "plan": "free",
+                "status": "active",
+                "stripe_customer_id": None,
+                "stripe_subscription_id": None,
+                "current_period_end": None,
+                "grace_period_end": None,
+            }
+        ), 200
+
+    return jsonify(
+        {
+            "plan": sub["plan"],
+            "status": sub["status"] or "active",
+            "stripe_customer_id": sub["stripe_customer_id"],
+            "stripe_subscription_id": sub["stripe_subscription_id"],
+            "start_date": sub["start_date"],
+            "end_date": sub["end_date"],
+            "current_period_end": sub["current_period_end"],
+            "grace_period_end": sub["grace_period_end"],
+        }
+    ), 200
+
+
+# ──────────────────────────────────────────────────────────────
+# POST /api/v1/billing/webhook
+# ──────────────────────────────────────────────────────────────
+
+
+@billing_bp.route("/webhook", methods=["POST"])
+def stripe_webhook():
+    """
+    Stripe webhook handler — no auth, signature-verified.
+
+    Handled events:
+      checkout.session.completed       → activate subscription
+      customer.subscription.updated    → sync plan/status
+      customer.subscription.deleted    → downgrade to free
+      invoice.payment_failed           → set past_due + 3-day grace period
+      invoice.payment_succeeded        → clear grace period
+    """
+    payload = request.get_data()
+    sig_header = request.headers.get("Stripe-Signature", "")
+
+    # Verify webhook signature (required in production)
+    if STRIPE_WEBHOOK_SECRET:
+        try:
+            event = stripe.Webhook.construct_event(
+                payload, sig_header, STRIPE_WEBHOOK_SECRET
+            )
+        except stripe.SignatureVerificationError as e:
+            logger.warning("Stripe webhook signature invalid: %s", e)
+            return jsonify({"error": "Signature invalide"}), 400
+        except ValueError as e:
+            logger.warning("Stripe webhook payload invalid: %s", e)
+            return jsonify({"error": "Payload invalide"}), 400
+    else:
+        # Dev/test: accept without verification (log a warning)
+        logger.warning("STRIPE_WEBHOOK_SECRET not set — skipping signature check!")
+        try:
+            event = stripe.Event.construct_from(json.loads(payload), stripe.api_key)
+        except Exception as e:
+            return jsonify({"error": "Payload invalide", "detail": str(e)}), 400
+
+    event_type = event["type"]
+    event_id = event["id"]
+    logger.info("Stripe webhook received: %s (%s)", event_type, event_id)
+
+    db = get_db()
+    try:
+        if event_type == "checkout.session.completed":
+            _handle_checkout_completed(db, event)
+
+        elif event_type in (
+            "customer.subscription.updated",
+            "customer.subscription.created",
+        ):
+            _handle_subscription_updated(db, event)
+
+        elif event_type == "customer.subscription.deleted":
+            _handle_subscription_deleted(db, event)
+
+        elif event_type == "invoice.payment_failed":
+            _handle_payment_failed(db, event)
+
+        elif event_type == "invoice.payment_succeeded":
+            _handle_payment_succeeded(db, event)
+
+        else:
+            logger.debug("Unhandled Stripe event type: %s", event_type)
+
+        db.commit()
+    except Exception as e:
+        db.rollback()
+        logger.error("Error processing Stripe webhook %s: %s", event_id, e)
+        return jsonify({"error": "Erreur interne"}), 500
+    finally:
+        db.close()
+
+    return jsonify({"status": "ok"}), 200
+
+
+# ──────────────────────────────────────────────────────────────
+# Webhook handlers
+# ──────────────────────────────────────────────────────────────
+
+
+def _resolve_user_from_customer(db, customer_id: str):
+    """Look up user_id via subscriptions.stripe_customer_id."""
+    row = db.execute(
+        "SELECT user_id FROM subscriptions WHERE stripe_customer_id = ? LIMIT 1",
+        (customer_id,),
+    ).fetchone()
+    if row:
+        return row["user_id"]
+
+    # Fallback: query Stripe for user_id metadata
+    try:
+        customer = stripe.Customer.retrieve(customer_id)
+        meta = _sget(customer, "metadata") or {}
+        uid = _sget(meta, "user_id")
+        if uid:
+            return int(uid)
+    except Exception:
+        pass
+    return None
+
+
+def _resolve_plan_from_price(price_id: str) -> str:
+    """Map Stripe price ID to internal plan name."""
+    for plan, pid in PLAN_PRICE_IDS.items():
+        if pid and pid == price_id:
+            return plan
+    # Unknown price — default to premium (safer than pro)
+    return "premium"
+
+
+def _handle_checkout_completed(db, event):
+    """checkout.session.completed → activate subscription for the user."""
+    session = event["data"]["object"]
+    customer_id = _sget(session, "customer")
+    subscription_id = _sget(session, "subscription")
+    metadata = _sget(session, "metadata") or {}
+    plan = _sget(metadata, "plan") or "premium"
+    user_id = _sget(metadata, "user_id")
+
+    if user_id:
+        user_id = int(user_id)
+    else:
+        user_id = _resolve_user_from_customer(db, customer_id)
+
+    if not user_id:
+        logger.error(
+            "checkout.session.completed: cannot resolve user for customer %s",
+            customer_id,
+        )
+        return
+
+    # Fetch subscription details from Stripe
+    current_period_end = None
+    if subscription_id:
+        try:
+            sub = stripe.Subscription.retrieve(subscription_id)
+            current_period_end = datetime.fromtimestamp(
+                sub["current_period_end"], tz=timezone.utc
+            ).isoformat()
+            # Sync plan from price if metadata plan is missing
+            if sub["items"]["data"]:
+                price_id = sub["items"]["data"][0]["price"]["id"]
+                plan = _resolve_plan_from_price(price_id)
+        except Exception as e:
+            logger.warning("Could not fetch subscription %s: %s", subscription_id, e)
+
+    _upsert_subscription(
+        db,
+        user_id,
+        plan=plan,
+        stripe_customer_id=customer_id,
+        stripe_subscription_id=subscription_id,
+        status="active",
+        current_period_end=current_period_end,
+        grace_period_end=None,
+    )
+    _update_user_plan(db, user_id, plan)
+    _record_billing_event(db, event["id"], event["type"], user_id=user_id)
+    logger.info("checkout.session.completed: user %s upgraded to %s", user_id, plan)
+
+
+def _handle_subscription_updated(db, event):
+    """customer.subscription.updated → sync status and plan."""
+    sub_obj = event["data"]["object"]
+    customer_id = _sget(sub_obj, "customer")
+    subscription_id = _sget(sub_obj, "id")
+    stripe_status = _sget(sub_obj, "status") or "active"
+    current_period_end = None
+
+    cpe = _sget(sub_obj, "current_period_end")
+    if cpe:
+        current_period_end = datetime.fromtimestamp(cpe, tz=timezone.utc).isoformat()
+
+    # Resolve plan from price
+    plan = "premium"
+    items_data = _sget(_sget(sub_obj, "items") or {}, "data")
+    if items_data:
+        price_id = items_data[0]["price"]["id"]
+        plan = _resolve_plan_from_price(price_id)
+
+    user_id = _resolve_user_from_customer(db, customer_id)
+    if not user_id:
+        # Try metadata
+        meta = _sget(sub_obj, "metadata") or {}
+        meta_uid = _sget(meta, "user_id")
+        if meta_uid:
+            user_id = int(meta_uid)
+
+    if not user_id:
+        logger.error(
+            "subscription.updated: cannot resolve user for customer %s", customer_id
+        )
+        return
+
+    _upsert_subscription(
+        db,
+        user_id,
+        plan=plan,
+        stripe_customer_id=customer_id,
+        stripe_subscription_id=subscription_id,
+        status=stripe_status,
+        current_period_end=current_period_end,
+    )
+    _update_user_plan(db, user_id, plan)
+    _record_billing_event(db, event["id"], event["type"], user_id=user_id)
+    logger.info(
+        "subscription.updated: user %s plan=%s status=%s", user_id, plan, stripe_status
+    )
+
+
+def _handle_subscription_deleted(db, event):
+    """customer.subscription.deleted → downgrade to free."""
+    sub_obj = event["data"]["object"]
+    customer_id = _sget(sub_obj, "customer")
+
+    user_id = _resolve_user_from_customer(db, customer_id)
+    if not user_id:
+        meta = _sget(sub_obj, "metadata") or {}
+        meta_uid = _sget(meta, "user_id")
+        if meta_uid:
+            user_id = int(meta_uid)
+
+    if not user_id:
+        logger.error(
+            "subscription.deleted: cannot resolve user for customer %s", customer_id
+        )
+        return
+
+    _upsert_subscription(
+        db,
+        user_id,
+        plan="free",
+        stripe_subscription_id=None,
+        status="canceled",
+        end_date=datetime.now(timezone.utc).isoformat(),
+        current_period_end=None,
+        grace_period_end=None,
+    )
+    _update_user_plan(db, user_id, "free")
+    _record_billing_event(db, event["id"], event["type"], user_id=user_id)
+    logger.info("subscription.deleted: user %s downgraded to free", user_id)
+
+
+def _handle_payment_failed(db, event):
+    """invoice.payment_failed → mark past_due + 3-day grace period."""
+    invoice = event["data"]["object"]
+    customer_id = _sget(invoice, "customer")
+    subscription_id = _sget(invoice, "subscription")
+
+    user_id = _resolve_user_from_customer(db, customer_id)
+    if not user_id:
+        logger.error(
+            "invoice.payment_failed: cannot resolve user for customer %s", customer_id
+        )
+        return
+
+    grace_end = (datetime.now(timezone.utc) + timedelta(days=3)).isoformat()
+
+    _upsert_subscription(db, user_id, status="past_due", grace_period_end=grace_end)
+    _record_billing_event(
+        db,
+        event["id"],
+        event["type"],
+        user_id=user_id,
+        payload={"subscription_id": subscription_id},
+    )
+
+    # TODO: send notification email via /api/notifications
+    logger.warning(
+        "invoice.payment_failed: user %s past_due, grace period until %s",
+        user_id,
+        grace_end,
+    )
+
+
+def _handle_payment_succeeded(db, event):
+    """invoice.payment_succeeded → clear past_due / grace period."""
+    invoice = event["data"]["object"]
+    customer_id = _sget(invoice, "customer")
+
+    user_id = _resolve_user_from_customer(db, customer_id)
+    if not user_id:
+        return
+
+    # Refresh subscription period end
+    current_period_end = None
+    lines = _sget(invoice, "lines") or {}
+    lines_data = _sget(lines, "data") or []
+    if lines_data:
+        period = lines_data[0].get("period") or {}
+        period_end = (
+            period.get("end") if isinstance(period, dict) else _sget(period, "end")
+        )
+        if period_end:
+            current_period_end = datetime.fromtimestamp(
+                period_end, tz=timezone.utc
+            ).isoformat()
+
+    _upsert_subscription(
+        db,
+        user_id,
+        status="active",
+        grace_period_end=None,
+        current_period_end=current_period_end,
+    )
+    _record_billing_event(db, event["id"], event["type"], user_id=user_id)
+    logger.info("invoice.payment_succeeded: user %s payment cleared", user_id)
+
+
+# ──────────────────────────────────────────────────────────────
+# On-import: ensure DB migration ran
+# ──────────────────────────────────────────────────────────────
+
+try:
+    migrate_billing_tables()
+except Exception as _e:
+    logger.warning("billing_db migration skipped (test env?): %s", _e)

api_v1/routes/courses.py

@@ -0,0 +1,277 @@
+#!/usr/bin/env python3
+"""
+Courses routes for API v1.
+
+GET /api/v1/courses/today          — liste des courses du jour (public, paginated)
+GET /api/v1/courses/{id}/predictions — prédictions ML pour une course (free tier, 1/day limit)
+"""
+
+import os
+from datetime import datetime, timedelta
+from flask import Blueprint, jsonify, request, g
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    error_response,
+    bad_request,
+    not_found,
+    internal_error,
+    get_pagination_params,
+    paginate_query,
+)
+from auth import jwt_required_middleware, free_daily_limit_check
+
+courses_bp = Blueprint("v1_courses", __name__, url_prefix="/api/v1/courses")
+
+
+# ──────────────────────────────────────────────────────────────
+# GET /api/v1/courses/today
+# ──────────────────────────────────────────────────────────────
+
+
+@courses_bp.route("/today", methods=["GET"])
+@jwt_required_middleware
+def courses_today():
+    """
+    Courses du jour
+    ---
+    tags:
+      - Courses
+    summary: Liste toutes les courses du jour avec info course
+    security:
+      - Bearer: []
+    parameters:
+      - name: filter
+        in: query
+        type: string
+        enum: [all, quinte, trot, plat]
+        default: all
+        description: Filtre par type de course
+      - name: limit
+        in: query
+        type: integer
+        default: 20
+      - name: offset
+        in: query
+        type: integer
+        default: 0
+    responses:
+      200:
+        description: Liste des courses du jour
+      401:
+        description: Token manquant ou invalide
+    """
+    race_filter = request.args.get("filter", "all").lower()
+    limit, offset = get_pagination_params(default_limit=50, max_limit=200)
+    today = datetime.now().strftime("%Y-%m-%d")
+
+    # Build SQL condition
+    if race_filter == "quinte":
+        cond = "AND (c.libelle LIKE '%Quinté%' OR c.libelle LIKE '%Quinte%')"
+    elif race_filter == "trot":
+        cond = "AND c.discipline LIKE '%Trot%'"
+    elif race_filter == "plat":
+        cond = "AND c.discipline LIKE '%Plat%'"
+    else:
+        cond = ""
+
+    conn = get_db()
+    try:
+        # Graceful handling if pmu_courses table doesn't exist yet
+        if not table_exists(conn, "pmu_courses"):
+            return jsonify(
+                {
+                    "status": "ok",
+                    "date": today,
+                    "filter": race_filter,
+                    "courses": [],
+                    "pagination": {
+                        "total": 0,
+                        "limit": limit,
+                        "offset": offset,
+                        "has_more": False,
+                    },
+                }
+            ), 200
+
+        # Count total
+        count_row = conn.execute(
+            f"""SELECT COUNT(*) as cnt
+                FROM pmu_courses c
+                WHERE c.date_programme = ? {cond}""",
+            (today,),
+        ).fetchone()
+        total = count_row["cnt"] if count_row else 0
+
+        rows = conn.execute(
+            f"""SELECT
+                    c.date_programme,
+                    c.num_reunion,
+                    c.num_course,
+                    c.libelle,
+                    c.discipline,
+                    c.distance,
+                    c.hippodrome,
+                    c.px_type,
+                    COUNT(p.id_cheval) as nb_partants
+                FROM pmu_courses c
+                LEFT JOIN pmu_partants p
+                    ON p.date_programme = c.date_programme
+                   AND p.num_reunion    = c.num_reunion
+                   AND p.num_course     = c.num_course
+                WHERE c.date_programme = ? {cond}
+                GROUP BY c.date_programme, c.num_reunion, c.num_course
+                ORDER BY c.num_reunion ASC, c.num_course ASC
+                LIMIT ? OFFSET ?""",
+            (today, limit, offset),
+        ).fetchall()
+
+        courses = []
+        for r in rows:
+            course_id = f"{r['num_reunion']}-{r['num_course']}"
+            courses.append(
+                {
+                    "id": course_id,
+                    "date": r["date_programme"],
+                    "num_reunion": r["num_reunion"],
+                    "num_course": r["num_course"],
+                    "libelle": r["libelle"],
+                    "discipline": r["discipline"],
+                    "distance": r["distance"],
+                    "hippodrome": r["hippodrome"],
+                    "type_pari": r["px_type"],
+                    "nb_partants": r["nb_partants"],
+                }
+            )
+
+        pagination = paginate_query(courses, total, limit, offset)
+
+        return jsonify(
+            {
+                "status": "ok",
+                "date": today,
+                "filter": race_filter,
+                "courses": courses,
+                **pagination,
+            }
+        ), 200
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()
+
+
+# ──────────────────────────────────────────────────────────────
+# GET /api/v1/courses/<course_id>/predictions
+# course_id format: "{num_reunion}-{num_course}"  e.g. "1-3"
+# ──────────────────────────────────────────────────────────────
+
+
+@courses_bp.route("/<course_id>/predictions", methods=["GET"])
+@jwt_required_middleware
+@free_daily_limit_check
+def course_predictions(course_id):
+    """
+    Prédictions pour une course
+    ---
+    tags:
+      - Courses
+    summary: Prédictions ML pour une course identifiée par {num_reunion}-{num_course}
+    security:
+      - Bearer: []
+    parameters:
+      - name: course_id
+        in: path
+        type: string
+        required: true
+        description: Identifiant de la course (format num_reunion-num_course, ex "1-3")
+      - name: date
+        in: query
+        type: string
+        format: date
+        description: Date de la course (YYYY-MM-DD), défaut = aujourd'hui
+    responses:
+      200:
+        description: Prédictions ML pour la course
+      400:
+        description: Paramètres invalides
+      404:
+        description: Course introuvable
+      429:
+        description: Limite quotidienne free tier atteinte
+    """
+    # Parse course_id
+    parts = course_id.split("-")
+    if len(parts) != 2:
+        return bad_request(
+            "course_id doit être au format {num_reunion}-{num_course}, ex: 1-3"
+        )
+
+    try:
+        num_reunion = int(parts[0])
+        num_course = int(parts[1])
+    except ValueError:
+        return bad_request("num_reunion et num_course doivent être des entiers")
+
+    date_param = request.args.get("date", datetime.now().strftime("%Y-%m-%d"))
+
+    conn = get_db()
+    try:
+        # Fetch course info
+        course_row = conn.execute(
+            """SELECT libelle, discipline, distance, hippodrome, px_type
+               FROM pmu_courses
+               WHERE date_programme = ? AND num_reunion = ? AND num_course = ?""",
+            (date_param, num_reunion, num_course),
+        ).fetchone()
+
+        if not course_row:
+            return not_found(
+                f"Course R{num_reunion}C{num_course} introuvable pour le {date_param}"
+            )
+
+        # Fetch ML predictions from cache
+        preds = []
+        if table_exists(conn, "ml_predictions_cache"):
+            preds = conn.execute(
+                """SELECT horse_name, horse_number, odds, prob_top1, prob_top3,
+                          ml_score, recommendation, is_value_bet, risque_label, risque_score
+                   FROM ml_predictions_cache
+                   WHERE date = ? AND num_reunion = ? AND num_course = ?
+                   ORDER BY ml_score DESC""",
+                (date_param, num_reunion, num_course),
+            ).fetchall()
+
+        # Fetch partants
+        partants = conn.execute(
+            """SELECT nom, num_pmu, cote_direct, cote_reference, tendance_cote, favoris,
+                      tx_victoire, tx_place, forme_recente, driver, entraineur, musique
+               FROM pmu_partants
+               WHERE date_programme = ? AND num_reunion = ? AND num_course = ?
+               ORDER BY num_pmu ASC""",
+            (date_param, num_reunion, num_course),
+        ).fetchall()
+
+        return jsonify(
+            {
+                "status": "ok",
+                "date": date_param,
+                "course": {
+                    "id": course_id,
+                    "libelle": course_row["libelle"],
+                    "discipline": course_row["discipline"],
+                    "distance": course_row["distance"],
+                    "hippodrome": course_row["hippodrome"],
+                    "type_pari": course_row["px_type"],
+                },
+                "predictions": [dict(p) for p in preds],
+                "partants": [dict(p) for p in partants],
+            }
+        ), 200
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/routes/export.py

@@ -0,0 +1,185 @@
+#!/usr/bin/env python3
+"""
+Export route for API v1.
+
+GET /api/v1/export/csv  — Export CSV des prédictions ou paris (pro)
+"""
+
+import csv
+import io
+from datetime import datetime, timedelta
+from flask import Blueprint, jsonify, request, Response
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    internal_error,
+    bad_request,
+    forbidden,
+)
+from auth import jwt_required_middleware, plan_required
+
+export_bp = Blueprint("v1_export", __name__, url_prefix="/api/v1/export")
+
+# Maximum rows exportable in one request
+EXPORT_MAX_ROWS = 5000
+
+
+@export_bp.route("/csv", methods=["GET"])
+@jwt_required_middleware
+@plan_required("pro")
+def export_csv():
+    """
+    Export CSV
+    ---
+    tags:
+      - Export
+    summary: Export CSV des prédictions ML ou des paris historiques — accès pro uniquement
+    security:
+      - Bearer: []
+    parameters:
+      - name: type
+        in: query
+        type: string
+        enum: [predictions, bets]
+        default: predictions
+        description: Type de données à exporter
+      - name: start
+        in: query
+        type: string
+        format: date
+        description: Date de début (YYYY-MM-DD)
+      - name: end
+        in: query
+        type: string
+        format: date
+        description: Date de fin (YYYY-MM-DD)
+      - name: date
+        in: query
+        type: string
+        format: date
+        description: Date unique (YYYY-MM-DD), ignoré si start/end fournis
+    responses:
+      200:
+        description: Fichier CSV
+        content:
+          text/csv:
+            schema:
+              type: string
+      400:
+        description: Paramètre invalide
+      401:
+        description: Token invalide
+      403:
+        description: Plan insuffisant (pro requis)
+    """
+    export_type = request.args.get("type", "predictions").lower()
+    if export_type not in ("predictions", "bets"):
+        return bad_request(
+            "Paramètre 'type' invalide. Valeurs acceptées: predictions, bets"
+        )
+
+    start = request.args.get("start")
+    end = request.args.get("end")
+    date = request.args.get("date", datetime.now().strftime("%Y-%m-%d"))
+
+    for label, val in [("start", start), ("end", end), ("date", date)]:
+        if val:
+            try:
+                datetime.strptime(val, "%Y-%m-%d")
+            except ValueError:
+                return bad_request(
+                    f"Paramètre '{label}' invalide, format attendu: YYYY-MM-DD"
+                )
+
+    # Build date range
+    if start and end:
+        date_cond = "date BETWEEN ? AND ?"
+        date_params = [start, end]
+    elif start:
+        date_cond = "date >= ?"
+        date_params = [start]
+    else:
+        date_cond = "date = ?"
+        date_params = [date]
+
+    conn = get_db()
+    try:
+        output = io.StringIO()
+
+        if export_type == "predictions":
+            if not table_exists(conn, "ml_predictions_cache"):
+                return bad_request("Table ml_predictions_cache introuvable")
+
+            rows = conn.execute(
+                f"""SELECT date, race_label, hippodrome, discipline, distance, heure,
+                           horse_name, horse_number, odds, prob_top1, prob_top3,
+                           ml_score, recommendation, is_value_bet, risque_label
+                    FROM ml_predictions_cache
+                    WHERE {date_cond}
+                    ORDER BY date DESC, ml_score DESC
+                    LIMIT {EXPORT_MAX_ROWS}""",
+                date_params,
+            ).fetchall()
+
+            fieldnames = [
+                "date",
+                "race_label",
+                "hippodrome",
+                "discipline",
+                "distance",
+                "heure",
+                "horse_name",
+                "horse_number",
+                "odds",
+                "prob_top1",
+                "prob_top3",
+                "ml_score",
+                "recommendation",
+                "is_value_bet",
+                "risque_label",
+            ]
+
+        else:  # bets
+            if not table_exists(conn, "bet_results"):
+                return bad_request("Table bet_results introuvable")
+
+            rows = conn.execute(
+                f"""SELECT date, race_name, type_pari, horse_name, horse_number,
+                           COALESCE(cote, 0) AS cote, mise, resultat, gain
+                    FROM bet_results
+                    WHERE {date_cond}
+                    ORDER BY date DESC
+                    LIMIT {EXPORT_MAX_ROWS}""",
+                date_params,
+            ).fetchall()
+
+            fieldnames = [
+                "date",
+                "race_name",
+                "type_pari",
+                "horse_name",
+                "horse_number",
+                "cote",
+                "mise",
+                "resultat",
+                "gain",
+            ]
+
+        writer = csv.DictWriter(output, fieldnames=fieldnames, extrasaction="ignore")
+        writer.writeheader()
+        for row in rows:
+            writer.writerow(dict(row))
+
+        filename = f"turf_{export_type}_{date_params[0]}.csv"
+        return Response(
+            output.getvalue(),
+            status=200,
+            mimetype="text/csv",
+            headers={"Content-Disposition": f'attachment; filename="{filename}"'},
+        )
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/routes/health.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+"""
+GET /api/v1/health — public healthcheck endpoint.
+No authentication required.
+"""
+
+from flask import Blueprint, jsonify
+from datetime import datetime, timezone
+
+health_bp = Blueprint("v1_health", __name__, url_prefix="/api/v1")
+
+
+@health_bp.route("/health", methods=["GET"])
+def health():
+    """
+    Health check
+    ---
+    tags:
+      - System
+    summary: Public healthcheck — returns API status and timestamp
+    responses:
+      200:
+        description: API is healthy
+        schema:
+          type: object
+          properties:
+            status:
+              type: string
+              example: ok
+            version:
+              type: string
+              example: "1.0"
+            timestamp:
+              type: string
+              format: date-time
+    """
+    return jsonify(
+        {
+            "status": "ok",
+            "version": "1.0",
+            "api": "Turf SaaS API v1",
+            "timestamp": datetime.now(timezone.utc).isoformat(),
+        }
+    ), 200

api_v1/routes/metrics.py

@@ -0,0 +1,144 @@
+#!/usr/bin/env python3
+"""
+Metrics route for API v1.
+
+GET /api/v1/metrics  — Métriques performances ML (premium+)
+"""
+
+from datetime import datetime, timedelta
+from flask import Blueprint, jsonify, request
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    internal_error,
+    bad_request,
+)
+from auth import jwt_required_middleware, plan_required
+
+metrics_bp = Blueprint("v1_metrics", __name__, url_prefix="/api/v1")
+
+
+@metrics_bp.route("/metrics", methods=["GET"])
+@jwt_required_middleware
+@plan_required("premium", "pro")
+def metrics():
+    """
+    Métriques ML
+    ---
+    tags:
+      - Métriques
+    summary: Métriques de performance du modèle ML (precision, ROI, top-3 rate) — premium+
+    security:
+      - Bearer: []
+    parameters:
+      - name: days
+        in: query
+        type: integer
+        default: 30
+        description: Nombre de jours à analyser (max 365)
+    responses:
+      200:
+        description: Métriques de performance ML
+      401:
+        description: Token invalide
+      403:
+        description: Plan insuffisant (premium ou pro requis)
+    """
+    try:
+        days = int(request.args.get("days", 30))
+    except (ValueError, TypeError):
+        return bad_request("Paramètre 'days' doit être un entier")
+
+    days = max(1, min(days, 365))
+    end_date = datetime.now().strftime("%Y-%m-%d")
+    start_date = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")
+
+    conn = get_db()
+    try:
+        # ── Bet-level metrics from bet_results ──
+        bet_metrics = {
+            "available": False,
+            "period": {"start": start_date, "end": end_date, "days": days},
+        }
+        ml_metrics = {"available": False}
+        daily_stats = []
+
+        if table_exists(conn, "bet_results"):
+            row = conn.execute(
+                """SELECT
+                       COUNT(*)                                           AS total,
+                       SUM(CASE WHEN resultat='GAGNE' THEN 1 ELSE 0 END)  AS gagne,
+                       SUM(mise)                                           AS mise,
+                       SUM(gain)                                           AS gain
+                   FROM bet_results
+                   WHERE date BETWEEN ? AND ?""",
+                (start_date, end_date),
+            ).fetchone()
+
+            total = row["total"] or 0
+            gagne = row["gagne"] or 0
+            mise = float(row["mise"] or 0)
+            gain = float(row["gain"] or 0)
+
+            bet_metrics = {
+                "available": True,
+                "period": {"start": start_date, "end": end_date, "days": days},
+                "total_bets": total,
+                "precision_pct": round(gagne / total * 100, 2) if total > 0 else 0.0,
+                "roi_pct": round((gain - mise) / mise * 100, 2) if mise > 0 else 0.0,
+                "mise_totale": round(mise, 2),
+                "gain_total": round(gain, 2),
+            }
+
+        # ── ML predictions cache metrics ──
+        if table_exists(conn, "ml_predictions_cache"):
+            cache_row = conn.execute(
+                """SELECT
+                       COUNT(*)                            AS total,
+                       SUM(is_value_bet)                   AS value_bets,
+                       AVG(prob_top1)                      AS avg_prob_top1,
+                       AVG(prob_top3)                      AS avg_prob_top3,
+                       AVG(ml_score)                       AS avg_ml_score
+                   FROM ml_predictions_cache
+                   WHERE date BETWEEN ? AND ?""",
+                (start_date, end_date),
+            ).fetchone()
+
+            if cache_row and cache_row["total"]:
+                ml_metrics = {
+                    "available": True,
+                    "total_predictions": cache_row["total"],
+                    "value_bets": cache_row["value_bets"] or 0,
+                    "avg_prob_top1": round(float(cache_row["avg_prob_top1"] or 0), 4),
+                    "avg_prob_top3": round(float(cache_row["avg_prob_top3"] or 0), 4),
+                    "avg_ml_score": round(float(cache_row["avg_ml_score"] or 0), 4),
+                }
+
+        # ── Daily breakdown ──
+        if table_exists(conn, "daily_stats"):
+            daily_rows = conn.execute(
+                """SELECT date, total_bets, bets_gagne, precision_pct, roi_pct,
+                          mise_totale, gain_total
+                   FROM daily_stats
+                   WHERE date BETWEEN ? AND ?
+                   ORDER BY date DESC
+                   LIMIT 60""",
+                (start_date, end_date),
+            ).fetchall()
+            daily_stats = [dict(r) for r in daily_rows]
+
+        return jsonify(
+            {
+                "status": "ok",
+                "period": {"start": start_date, "end": end_date, "days": days},
+                "bet_metrics": bet_metrics,
+                "ml_metrics": ml_metrics,
+                "daily": daily_stats,
+            }
+        ), 200
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/routes/predictions.py

@@ -0,0 +1,163 @@
+#!/usr/bin/env python3
+"""
+Predictions routes for API v1.
+
+GET /api/v1/predictions/top3   — Top 3 global du jour (free tier, 1/day limit)
+GET /api/v1/predictions/all    — Toutes prédictions (premium+)
+"""
+
+from datetime import datetime, timedelta
+from flask import Blueprint, jsonify, request
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    internal_error,
+    not_found,
+    get_pagination_params,
+    paginate_query,
+)
+from auth import jwt_required_middleware, plan_required, free_daily_limit_check
+
+predictions_bp = Blueprint("v1_predictions", __name__, url_prefix="/api/v1/predictions")
+
+
+def _fetch_ml_predictions(conn, date: str, limit: int = None, offset: int = 0):
+    """Shared helper — returns rows from ml_predictions_cache."""
+    if not table_exists(conn, "ml_predictions_cache"):
+        return [], 0
+
+    count_row = conn.execute(
+        "SELECT COUNT(*) as cnt FROM ml_predictions_cache WHERE date = ?",
+        (date,),
+    ).fetchone()
+    total = count_row["cnt"] if count_row else 0
+
+    sql = """SELECT
+                 race_label, hippodrome, discipline, distance, heure,
+                 horse_name, horse_number, odds, prob_top1, prob_top3,
+                 ml_score, recommendation, is_value_bet, risque_label, risque_score
+             FROM ml_predictions_cache
+             WHERE date = ?
+             ORDER BY ml_score DESC"""
+    params = [date]
+
+    if limit is not None:
+        sql += " LIMIT ? OFFSET ?"
+        params += [limit, offset]
+
+    rows = conn.execute(sql, params).fetchall()
+    return [dict(r) for r in rows], total
+
+
+# ──────────────────────────────────────────────────────────────
+# GET /api/v1/predictions/top3
+# ──────────────────────────────────────────────────────────────
+
+
+@predictions_bp.route("/top3", methods=["GET"])
+@jwt_required_middleware
+@free_daily_limit_check
+def predictions_top3():
+    """
+    Top 3 prédictions du jour
+    ---
+    tags:
+      - Prédictions
+    summary: Top 3 chevaux avec le meilleur score ML du jour (free tier inclus)
+    security:
+      - Bearer: []
+    parameters:
+      - name: date
+        in: query
+        type: string
+        format: date
+        description: Date au format YYYY-MM-DD (défaut aujourd'hui)
+    responses:
+      200:
+        description: Top 3 prédictions ML du jour
+      401:
+        description: Token invalide
+      429:
+        description: Limite quotidienne free tier atteinte
+    """
+    date_param = request.args.get("date", datetime.now().strftime("%Y-%m-%d"))
+
+    conn = get_db()
+    try:
+        predictions, _ = _fetch_ml_predictions(conn, date_param, limit=3, offset=0)
+
+        return jsonify(
+            {
+                "status": "ok",
+                "date": date_param,
+                "top3": predictions,
+            }
+        ), 200
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()
+
+
+# ──────────────────────────────────────────────────────────────
+# GET /api/v1/predictions/all
+# ──────────────────────────────────────────────────────────────
+
+
+@predictions_bp.route("/all", methods=["GET"])
+@jwt_required_middleware
+@plan_required("premium", "pro")
+def predictions_all():
+    """
+    Toutes les prédictions du jour
+    ---
+    tags:
+      - Prédictions
+    summary: Toutes les prédictions ML du jour — accès premium et pro uniquement
+    security:
+      - Bearer: []
+    parameters:
+      - name: date
+        in: query
+        type: string
+        format: date
+        description: Date au format YYYY-MM-DD (défaut aujourd'hui)
+      - name: limit
+        in: query
+        type: integer
+        default: 20
+      - name: offset
+        in: query
+        type: integer
+        default: 0
+    responses:
+      200:
+        description: Toutes les prédictions ML
+      401:
+        description: Token invalide
+      403:
+        description: Plan insuffisant (premium ou pro requis)
+    """
+    date_param = request.args.get("date", datetime.now().strftime("%Y-%m-%d"))
+    limit, offset = get_pagination_params(default_limit=50, max_limit=500)
+
+    conn = get_db()
+    try:
+        predictions, total = _fetch_ml_predictions(
+            conn, date_param, limit=limit, offset=offset
+        )
+        pagination = paginate_query(predictions, total, limit, offset)
+
+        return jsonify(
+            {
+                "status": "ok",
+                "date": date_param,
+                "predictions": predictions,
+                **pagination,
+            }
+        ), 200
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/routes/valuebets.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+"""
+Value bets route for API v1.
+
+GET /api/v1/valuebets  — Value bets du jour (premium+)
+"""
+
+from datetime import datetime
+from flask import Blueprint, jsonify, request
+
+from api_v1.utils import (
+    get_db,
+    table_exists,
+    internal_error,
+    get_pagination_params,
+    paginate_query,
+)
+from auth import jwt_required_middleware, plan_required
+
+valuebets_bp = Blueprint("v1_valuebets", __name__, url_prefix="/api/v1")
+
+
+@valuebets_bp.route("/valuebets", methods=["GET"])
+@jwt_required_middleware
+@plan_required("premium", "pro")
+def valuebets():
+    """
+    Value bets du jour
+    ---
+    tags:
+      - Value Bets
+    summary: Value bets du jour — chevaux à cote surévaluée par le marché (premium+)
+    security:
+      - Bearer: []
+    parameters:
+      - name: date
+        in: query
+        type: string
+        format: date
+        description: Date YYYY-MM-DD (défaut aujourd'hui)
+      - name: min_odds
+        in: query
+        type: number
+        default: 2.0
+        description: Cote minimale pour filtrer les value bets
+      - name: limit
+        in: query
+        type: integer
+        default: 20
+      - name: offset
+        in: query
+        type: integer
+        default: 0
+    responses:
+      200:
+        description: Value bets du jour
+      401:
+        description: Token invalide
+      403:
+        description: Plan insuffisant (premium ou pro requis)
+    """
+    date_param = request.args.get("date", datetime.now().strftime("%Y-%m-%d"))
+    limit, offset = get_pagination_params(default_limit=20, max_limit=100)
+
+    try:
+        min_odds = float(request.args.get("min_odds", 2.0))
+    except (ValueError, TypeError):
+        min_odds = 2.0
+
+    conn = get_db()
+    try:
+        rows = []
+        total = 0
+
+        if table_exists(conn, "ml_predictions_cache"):
+            count_row = conn.execute(
+                """SELECT COUNT(*) as cnt
+                   FROM ml_predictions_cache
+                   WHERE date = ? AND is_value_bet = 1 AND odds >= ?""",
+                (date_param, min_odds),
+            ).fetchone()
+            total = count_row["cnt"] if count_row else 0
+
+            rows = conn.execute(
+                """SELECT race_label, hippodrome, discipline, distance, heure,
+                          horse_name, horse_number, odds, prob_top1, prob_top3,
+                          ml_score, recommendation, risque_label, risque_score
+                   FROM ml_predictions_cache
+                   WHERE date = ? AND is_value_bet = 1 AND odds >= ?
+                   ORDER BY ml_score DESC
+                   LIMIT ? OFFSET ?""",
+                (date_param, min_odds, limit, offset),
+            ).fetchall()
+
+        valuebets_list = [dict(r) for r in rows]
+        pagination = paginate_query(valuebets_list, total, limit, offset)
+
+        return jsonify(
+            {
+                "status": "ok",
+                "date": date_param,
+                "min_odds": min_odds,
+                "valuebets": valuebets_list,
+                **pagination,
+            }
+        ), 200
+
+    except Exception as e:
+        return internal_error(str(e))
+    finally:
+        conn.close()

api_v1/utils.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+"""
+Shared utilities for API v1 — error helpers, pagination, DB access.
+"""
+
+import sqlite3
+import os
+from flask import jsonify, request
+
+DB_PATH = os.environ.get("TURF_SAAS_DB", "/home/h3r7/turf_saas/turf_saas.db")
+
+
+# ──────────────────────────────────────────────────────────────
+# Database
+# ──────────────────────────────────────────────────────────────
+
+
+def get_db():
+    """Return a SQLite connection with Row factory."""
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+
+def table_exists(conn, table_name: str) -> bool:
+    row = conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (table_name,)
+    ).fetchone()
+    return row is not None
+
+
+# ──────────────────────────────────────────────────────────────
+# Uniform error responses
+# ──────────────────────────────────────────────────────────────
+
+
+def error_response(message: str, code: int, status: str = "error"):
+    """Return a JSON error envelope consistent with the API contract.
+
+    Shape: {"status": "error", "message": "...", "code": 400}
+    """
+    return jsonify({"status": status, "message": message, "code": code}), code
+
+
+def not_found(message: str = "Resource not found"):
+    return error_response(message, 404)
+
+
+def bad_request(message: str = "Bad request"):
+    return error_response(message, 400)
+
+
+def forbidden(message: str = "Forbidden", required_plans=None, current_plan=None):
+    payload = {"status": "error", "message": message, "code": 403}
+    if required_plans:
+        payload["required_plans"] = required_plans
+    if current_plan:
+        payload["current_plan"] = current_plan
+        payload["upgrade_url"] = "/api/v1/subscription/upgrade"
+    return jsonify(payload), 403
+
+
+def internal_error(message: str = "Internal server error"):
+    return error_response(message, 500)
+
+
+# ──────────────────────────────────────────────────────────────
+# Pagination helpers
+# ──────────────────────────────────────────────────────────────
+
+
+def get_pagination_params(default_limit: int = 20, max_limit: int = 100):
+    """Extract and validate limit/offset from query-string."""
+    try:
+        limit = int(request.args.get("limit", default_limit))
+    except (ValueError, TypeError):
+        limit = default_limit
+
+    try:
+        offset = int(request.args.get("offset", 0))
+    except (ValueError, TypeError):
+        offset = 0
+
+    limit = max(1, min(limit, max_limit))
+    offset = max(0, offset)
+    return limit, offset
+
+
+def paginate_query(rows, total: int, limit: int, offset: int):
+    """Wrap a list of rows in a pagination envelope."""
+    return {
+        "pagination": {
+            "total": total,
+            "limit": limit,
+            "offset": offset,
+            "has_more": (offset + limit) < total,
+        }
+    }

app_v1.py

@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+"""
+app_v1.py — Turf SaaS Flask application with versioned API /v1/
+
+This module creates the Flask app, registers:
+  - Auth JWT (from Sprint 2-3)
+  - API v1 blueprints
+  - Swagger/OpenAPI documentation at /api/v1/docs
+
+Usage:
+    python app_v1.py
+    # or via gunicorn:
+    gunicorn -w 2 -b 0.0.0.0:8792 app_v1:app
+
+Sprint 3-4: HRT-29 — Refacto API /v1/
+"""
+
+import os
+import logging
+from datetime import timedelta
+
+from flask import Flask, jsonify
+from flask_cors import CORS
+from flask_jwt_extended import JWTManager
+from flasgger import Swagger
+
+from auth_db import init_auth_tables
+from auth import auth_bp
+from api_v1 import register_api_v1
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+)
+logger = logging.getLogger("turf_saas.app_v1")
+
+
+def create_app() -> Flask:
+    """Application factory."""
+    app = Flask(__name__)
+
+    # ── CORS ──
+    CORS(app, origins=["*"], methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
+
+    # ── JWT config ──
+    app.config["JWT_SECRET_KEY"] = os.environ.get(
+        "JWT_SECRET_KEY", "change-me-in-production-use-strong-random-secret"
+    )
+    app.config["JWT_ACCESS_TOKEN_EXPIRES"] = timedelta(minutes=15)
+    app.config["JWT_REFRESH_TOKEN_EXPIRES"] = timedelta(days=30)
+    JWTManager(app)
+
+    # ── Swagger / OpenAPI ──
+    swagger_config = {
+        "headers": [],
+        "specs": [
+            {
+                "endpoint": "apispec_v1",
+                "route": "/api/v1/apispec.json",
+                "rule_filter": lambda rule: str(rule).startswith("/api/v1"),
+                "model_filter": lambda tag: True,
+            }
+        ],
+        "static_url_path": "/flasgger_static",
+        "swagger_ui": True,
+        "specs_route": "/api/v1/docs",
+    }
+
+    swagger_template = {
+        "swagger": "2.0",
+        "info": {
+            "title": "Turf SaaS API",
+            "description": (
+                "API v1 — Prédictions turf IA, value bets, backtest & métriques.\n\n"
+                "**Plans:** `free` | `premium` | `pro`\n\n"
+                "**Auth:** Bearer JWT — obtenir un token via `POST /api/v1/auth/login`"
+            ),
+            "version": "1.0.0",
+            "contact": {"name": "H3R7 Tech"},
+        },
+        "basePath": "/",
+        "schemes": ["http", "https"],
+        "securityDefinitions": {
+            "Bearer": {
+                "type": "apiKey",
+                "name": "Authorization",
+                "in": "header",
+                "description": "Entrer: **Bearer <token>**",
+            }
+        },
+        "consumes": ["application/json"],
+        "produces": ["application/json"],
+    }
+
+    Swagger(app, config=swagger_config, template=swagger_template)
+
+    # ── Auth DB init ──
+    with app.app_context():
+        try:
+            init_auth_tables()
+        except Exception as e:
+            logger.warning("init_auth_tables warning: %s", e)
+
+    # ── Register auth blueprint ──
+    app.register_blueprint(auth_bp)
+
+    # ── Register API v1 blueprints ──
+    register_api_v1(app)
+
+    # ── Global error handlers ──
+    @app.errorhandler(404)
+    def not_found_handler(e):
+        return jsonify(
+            {"status": "error", "message": "Route introuvable", "code": 404}
+        ), 404
+
+    @app.errorhandler(405)
+    def method_not_allowed_handler(e):
+        return jsonify(
+            {"status": "error", "message": "Méthode non autorisée", "code": 405}
+        ), 405
+
+    @app.errorhandler(500)
+    def internal_error_handler(e):
+        logger.exception("Unhandled 500 error")
+        return jsonify(
+            {"status": "error", "message": "Erreur serveur interne", "code": 500}
+        ), 500
+
+    logger.info("Turf SaaS API v1 ready — docs at /api/v1/docs")
+    return app
+
+
+app = create_app()
+
+if __name__ == "__main__":
+    port = int(os.environ.get("PORT", 8792))
+    app.run(host="0.0.0.0", port=port, debug=False)

auth.py

@@ -0,0 +1,362 @@
+#!/usr/bin/env python3
+"""
+Auth Blueprint — JWT authentication + multi-tenant plan enforcement
+Sprint 2-3: HRT-28
+
+Endpoints:
+  POST /api/v1/auth/register  — email/password registration
+  POST /api/v1/auth/login     — returns access_token (15min) + refresh_token (30d)
+  POST /api/v1/auth/refresh   — rotate refresh token, issue new access_token
+  POST /api/v1/auth/logout    — revoke refresh token
+
+Middleware exposed:
+  jwt_required_middleware()   — decorator: valid access JWT required
+  plan_required(plans)        — decorator: user plan must be in given list
+"""
+
+import os
+import hashlib
+import secrets
+import logging
+from datetime import datetime, timedelta, timezone
+from functools import wraps
+
+import bcrypt
+from flask import Blueprint, request, jsonify, g, current_app
+from flask_jwt_extended import (
+    JWTManager,
+    create_access_token,
+    create_refresh_token,
+    decode_token,
+    get_jwt_identity,
+    verify_jwt_in_request,
+)
+from flask_jwt_extended.exceptions import JWTExtendedException
+from jwt.exceptions import PyJWTError
+
+from auth_db import get_db
+
+logger = logging.getLogger("turf_saas.auth")
+
+auth_bp = Blueprint("auth", __name__, url_prefix="/api/v1/auth")
+
+# ──────────────────────────────────────────────────────────────
+# Helpers
+# ──────────────────────────────────────────────────────────────
+
+
+def _hash_token(raw_token: str) -> str:
+    """SHA-256 hash of a token string for secure DB storage."""
+    return hashlib.sha256(raw_token.encode()).hexdigest()
+
+
+def _get_user_by_email(email: str):
+    db = get_db()
+    user = db.execute(
+        "SELECT * FROM users WHERE email = ? AND is_active = 1", (email.lower(),)
+    ).fetchone()
+    db.close()
+    return user
+
+
+def _get_user_by_id(user_id: int):
+    db = get_db()
+    user = db.execute(
+        "SELECT * FROM users WHERE id = ? AND is_active = 1", (user_id,)
+    ).fetchone()
+    db.close()
+    return user
+
+
+def _store_refresh_token(user_id: int, raw_token: str, expires_at: datetime):
+    token_hash = _hash_token(raw_token)
+    db = get_db()
+    db.execute(
+        "INSERT INTO refresh_tokens (user_id, token_hash, expires_at) VALUES (?,?,?)",
+        (user_id, token_hash, expires_at.isoformat()),
+    )
+    db.commit()
+    db.close()
+
+
+def _revoke_refresh_token(raw_token: str):
+    token_hash = _hash_token(raw_token)
+    db = get_db()
+    db.execute(
+        "UPDATE refresh_tokens SET revoked = 1 WHERE token_hash = ?", (token_hash,)
+    )
+    db.commit()
+    db.close()
+
+
+def _is_refresh_token_valid(raw_token: str, user_id: int) -> bool:
+    token_hash = _hash_token(raw_token)
+    db = get_db()
+    row = db.execute(
+        """SELECT id FROM refresh_tokens
+           WHERE token_hash = ? AND user_id = ? AND revoked = 0
+             AND expires_at > datetime('now')""",
+        (token_hash, user_id),
+    ).fetchone()
+    db.close()
+    return row is not None
+
+
+# ──────────────────────────────────────────────────────────────
+# Auth endpoints
+# ──────────────────────────────────────────────────────────────
+
+
+@auth_bp.route("/register", methods=["POST"])
+def register():
+    """POST /api/v1/auth/register — create a new user account (plan=free)."""
+    data = request.get_json(silent=True) or {}
+    email = (data.get("email") or "").strip().lower()
+    password = data.get("password") or ""
+
+    if not email or "@" not in email:
+        return jsonify({"error": "Email invalide"}), 400
+    if len(password) < 8:
+        return jsonify({"error": "Mot de passe trop court (min 8 caractères)"}), 400
+
+    # Check uniqueness
+    existing = _get_user_by_email(email)
+    if existing:
+        return jsonify({"error": "Email déjà enregistré"}), 409
+
+    password_hash = bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
+
+    db = get_db()
+    try:
+        cursor = db.execute(
+            "INSERT INTO users (email, password_hash, plan) VALUES (?,?,?)",
+            (email, password_hash, "free"),
+        )
+        user_id = cursor.lastrowid
+        # Create initial subscription record
+        db.execute(
+            "INSERT INTO subscriptions (user_id, plan) VALUES (?,?)",
+            (user_id, "free"),
+        )
+        db.commit()
+    except Exception as e:
+        db.rollback()
+        logger.error("register error: %s", e)
+        return jsonify({"error": "Erreur interne"}), 500
+    finally:
+        db.close()
+
+    logger.info("New user registered: %s (id=%s)", email, user_id)
+    return jsonify({"message": "Compte créé avec succès", "user_id": user_id}), 201
+
+
+@auth_bp.route("/login", methods=["POST"])
+def login():
+    """POST /api/v1/auth/login — returns JWT access_token + refresh_token."""
+    data = request.get_json(silent=True) or {}
+    email = (data.get("email") or "").strip().lower()
+    password = data.get("password") or ""
+
+    if not email or not password:
+        return jsonify({"error": "Email et mot de passe requis"}), 400
+
+    user = _get_user_by_email(email)
+    if not user:
+        return jsonify({"error": "Identifiants invalides"}), 401
+
+    if not bcrypt.checkpw(password.encode(), user["password_hash"].encode()):
+        logger.warning("Failed login attempt for %s", email)
+        return jsonify({"error": "Identifiants invalides"}), 401
+
+    # Create tokens
+    identity = str(user["id"])
+    additional_claims = {"plan": user["plan"], "email": user["email"]}
+
+    access_token = create_access_token(
+        identity=identity,
+        additional_claims=additional_claims,
+    )
+    raw_refresh = create_refresh_token(identity=identity)
+
+    refresh_expires = datetime.now(timezone.utc) + timedelta(days=30)
+    _store_refresh_token(user["id"], raw_refresh, refresh_expires)
+
+    logger.info("User %s logged in (plan=%s)", email, user["plan"])
+    return jsonify(
+        {
+            "access_token": access_token,
+            "refresh_token": raw_refresh,
+            "token_type": "Bearer",
+            "plan": user["plan"],
+        }
+    ), 200
+
+
+@auth_bp.route("/refresh", methods=["POST"])
+def refresh():
+    """POST /api/v1/auth/refresh — rotate refresh token, issue new access_token."""
+    data = request.get_json(silent=True) or {}
+    raw_refresh = (data.get("refresh_token") or "").strip()
+
+    if not raw_refresh:
+        return jsonify({"error": "refresh_token manquant"}), 400
+
+    # Decode without verifying in DB first (to get user_id)
+    try:
+        decoded = decode_token(raw_refresh)
+    except Exception:
+        return jsonify({"error": "Refresh token invalide ou expiré"}), 401
+
+    user_id = int(decoded.get("sub", 0))
+
+    if not _is_refresh_token_valid(raw_refresh, user_id):
+        return jsonify({"error": "Refresh token invalide, révoqué ou expiré"}), 401
+
+    user = _get_user_by_id(user_id)
+    if not user:
+        return jsonify({"error": "Utilisateur introuvable"}), 401
+
+    # Revoke old refresh token (rotation)
+    _revoke_refresh_token(raw_refresh)
+
+    # Issue new tokens
+    identity = str(user["id"])
+    additional_claims = {"plan": user["plan"], "email": user["email"]}
+    new_access = create_access_token(
+        identity=identity, additional_claims=additional_claims
+    )
+    new_refresh = create_refresh_token(identity=identity)
+
+    refresh_expires = datetime.now(timezone.utc) + timedelta(days=30)
+    _store_refresh_token(user["id"], new_refresh, refresh_expires)
+
+    logger.info("Token refreshed for user_id=%s", user_id)
+    return jsonify(
+        {
+            "access_token": new_access,
+            "refresh_token": new_refresh,
+            "token_type": "Bearer",
+            "plan": user["plan"],
+        }
+    ), 200
+
+
+@auth_bp.route("/logout", methods=["POST"])
+def logout():
+    """POST /api/v1/auth/logout — revoke refresh token."""
+    data = request.get_json(silent=True) or {}
+    raw_refresh = (data.get("refresh_token") or "").strip()
+
+    if raw_refresh:
+        _revoke_refresh_token(raw_refresh)
+
+    return jsonify({"message": "Déconnexion réussie"}), 200
+
+
+# ──────────────────────────────────────────────────────────────
+# JWT-protected middleware
+# ──────────────────────────────────────────────────────────────
+
+
+def jwt_required_middleware(fn):
+    """Decorator: require a valid Bearer JWT access token."""
+
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        try:
+            verify_jwt_in_request()
+            user_id = int(get_jwt_identity())
+            user = _get_user_by_id(user_id)
+            if not user:
+                return jsonify({"error": "Utilisateur introuvable"}), 401
+            g.current_user = dict(user)
+            g.current_user_id = user_id
+        except (JWTExtendedException, PyJWTError) as e:
+            logger.debug("JWT auth failed: %s", e)
+            return jsonify({"error": "Token invalide ou expiré", "detail": str(e)}), 401
+        return fn(*args, **kwargs)
+
+    return wrapper
+
+
+def plan_required(*allowed_plans):
+    """
+    Decorator factory: user's plan must be in allowed_plans.
+    Must be applied AFTER @jwt_required_middleware.
+
+    Example:
+        @app.route("/api/v1/predictions")
+        @jwt_required_middleware
+        @plan_required("premium", "pro")
+        def premium_predictions():
+            ...
+    """
+
+    def decorator(fn):
+        @wraps(fn)
+        def wrapper(*args, **kwargs):
+            user = getattr(g, "current_user", None)
+            if not user:
+                return jsonify({"error": "Non authentifié"}), 401
+            if user["plan"] not in allowed_plans:
+                return jsonify(
+                    {
+                        "error": "Plan insuffisant",
+                        "required": list(allowed_plans),
+                        "current_plan": user["plan"],
+                        "upgrade_url": "/api/v1/subscription/upgrade",
+                    }
+                ), 403
+            return fn(*args, **kwargs)
+
+        return wrapper
+
+    return decorator
+
+
+def free_daily_limit_check(fn):
+    """
+    Decorator: enforce free plan daily limit (1 course/jour).
+    Must be applied AFTER @jwt_required_middleware.
+    """
+
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        user = getattr(g, "current_user", None)
+        if not user or user["plan"] != "free":
+            return fn(*args, **kwargs)
+
+        today = datetime.now(timezone.utc).date().isoformat()
+        db = get_db()
+        row = db.execute(
+            "SELECT daily_usage, last_usage_date FROM users WHERE id = ?",
+            (user["id"],),
+        ).fetchone()
+        db.close()
+
+        if row and row["last_usage_date"] == today and row["daily_usage"] >= 1:
+            return jsonify(
+                {
+                    "error": "Limite quotidienne atteinte (plan free: 1 course/jour)",
+                    "upgrade_url": "/api/v1/subscription/upgrade",
+                }
+            ), 429
+
+        # Increment usage
+        db = get_db()
+        if row and row["last_usage_date"] == today:
+            db.execute(
+                "UPDATE users SET daily_usage = daily_usage + 1 WHERE id = ?",
+                (user["id"],),
+            )
+        else:
+            db.execute(
+                "UPDATE users SET daily_usage = 1, last_usage_date = ? WHERE id = ?",
+                (today, user["id"]),
+            )
+        db.commit()
+        db.close()
+
+        return fn(*args, **kwargs)
+
+    return wrapper

auth_db.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+"""
+Auth DB — users and subscriptions schema for turf_saas.db
+Sprint 2-3: Auth JWT + Multi-tenant (HRT-28)
+"""
+
+import sqlite3
+import os
+
+DB_PATH = os.environ.get("TURF_SAAS_DB", "/home/h3r7/turf_saas/turf_saas.db")
+
+
+def get_db():
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+
+def init_auth_tables():
+    """Create users and subscriptions tables if they don't exist."""
+    conn = get_db()
+    c = conn.cursor()
+
+    c.executescript("""
+        CREATE TABLE IF NOT EXISTS users (
+            id              INTEGER PRIMARY KEY AUTOINCREMENT,
+            email           TEXT    NOT NULL UNIQUE,
+            password_hash   TEXT    NOT NULL,
+            plan            TEXT    NOT NULL DEFAULT 'free'
+                            CHECK(plan IN ('free','premium','pro')),
+            created_at      DATETIME NOT NULL DEFAULT (datetime('now')),
+            is_active       INTEGER  NOT NULL DEFAULT 1,
+            daily_usage     INTEGER  NOT NULL DEFAULT 0,
+            last_usage_date TEXT     DEFAULT NULL
+        );
+
+        CREATE TABLE IF NOT EXISTS subscriptions (
+            id                  INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id             INTEGER NOT NULL REFERENCES users(id),
+            plan                TEXT    NOT NULL CHECK(plan IN ('free','premium','pro')),
+            start_date          DATETIME NOT NULL DEFAULT (datetime('now')),
+            end_date            DATETIME,
+            stripe_customer_id  TEXT,
+            FOREIGN KEY (user_id) REFERENCES users(id)
+        );
+
+        CREATE TABLE IF NOT EXISTS refresh_tokens (
+            id          INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id     INTEGER NOT NULL REFERENCES users(id),
+            token_hash  TEXT    NOT NULL UNIQUE,
+            created_at  DATETIME NOT NULL DEFAULT (datetime('now')),
+            expires_at  DATETIME NOT NULL,
+            revoked     INTEGER  NOT NULL DEFAULT 0
+        );
+
+        CREATE INDEX IF NOT EXISTS idx_users_email          ON users(email);
+        CREATE INDEX IF NOT EXISTS idx_subscriptions_user   ON subscriptions(user_id);
+        CREATE INDEX IF NOT EXISTS idx_refresh_tokens_user  ON refresh_tokens(user_id);
+        CREATE INDEX IF NOT EXISTS idx_refresh_tokens_hash  ON refresh_tokens(token_hash);
+    """)
+
+    conn.commit()
+    conn.close()
+    print("[auth_db] Tables users, subscriptions, refresh_tokens created/verified.")
+
+
+if __name__ == "__main__":
+    init_auth_tables()

billing_db.py

@@ -0,0 +1,127 @@
+#!/usr/bin/env python3
+"""
+DB Migration — Billing Stripe
+Sprint 5-6: HRT-31
+
+Adds stripe_subscription_id and status columns to subscriptions table,
+and an invoices / grace-period tracking table.
+
+Run once:
+    ./venv/bin/python billing_db.py
+"""
+
+import sqlite3
+import os
+import logging
+
+DB_PATH = os.environ.get("TURF_SAAS_DB", "/home/h3r7/turf_saas/turf_saas.db")
+logger = logging.getLogger("turf_saas.billing_db")
+
+
+def get_db():
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+
+def migrate_billing_tables():
+    """Idempotent migration: add billing columns and billing_events table.
+
+    Requires auth tables (users, subscriptions) to exist first.
+    Calls init_auth_tables() automatically if subscriptions is absent.
+    """
+    from auth_db import init_auth_tables as _init_auth
+
+    conn = get_db()
+    c = conn.cursor()
+
+    # Ensure base auth tables exist
+    tables = {
+        row[0] for row in c.execute("SELECT name FROM sqlite_master WHERE type='table'")
+    }
+    conn.close()
+
+    if "subscriptions" not in tables:
+        _init_auth()
+
+    conn = get_db()
+    c = conn.cursor()
+
+    # Add stripe_subscription_id if missing
+    columns = {row[1] for row in c.execute("PRAGMA table_info(subscriptions)")}
+
+    if "stripe_subscription_id" not in columns:
+        c.execute("ALTER TABLE subscriptions ADD COLUMN stripe_subscription_id TEXT")
+        logger.info("[billing_db] Added stripe_subscription_id column to subscriptions")
+
+    if "status" not in columns:
+        c.execute(
+            "ALTER TABLE subscriptions ADD COLUMN "
+            "status TEXT NOT NULL DEFAULT 'active' "
+            "CHECK(status IN ('active','past_due','canceled','trialing','incomplete'))"
+        )
+        logger.info("[billing_db] Added status column to subscriptions")
+
+    if "grace_period_end" not in columns:
+        c.execute("ALTER TABLE subscriptions ADD COLUMN grace_period_end DATETIME")
+        logger.info("[billing_db] Added grace_period_end column to subscriptions")
+
+    if "current_period_end" not in columns:
+        c.execute("ALTER TABLE subscriptions ADD COLUMN current_period_end DATETIME")
+        logger.info("[billing_db] Added current_period_end column to subscriptions")
+
+    # billing_events table — audit trail for all webhook events
+    c.executescript("""
+        CREATE TABLE IF NOT EXISTS billing_events (
+            id              INTEGER PRIMARY KEY AUTOINCREMENT,
+            stripe_event_id TEXT    NOT NULL UNIQUE,
+            event_type      TEXT    NOT NULL,
+            user_id         INTEGER REFERENCES users(id),
+            payload         TEXT,
+            processed_at    DATETIME NOT NULL DEFAULT (datetime('now'))
+        );
+
+        CREATE INDEX IF NOT EXISTS idx_billing_events_user  ON billing_events(user_id);
+        CREATE INDEX IF NOT EXISTS idx_billing_events_type  ON billing_events(event_type);
+        CREATE INDEX IF NOT EXISTS idx_subscriptions_stripe ON subscriptions(stripe_subscription_id);
+        CREATE INDEX IF NOT EXISTS idx_subscriptions_customer ON subscriptions(stripe_customer_id);
+    """)
+
+    conn.commit()
+    conn.close()
+    print(
+        "[billing_db] Migration complete: subscriptions + billing_events tables ready."
+    )
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    migrate_billing_tables()
+
+
+# ──────────────────────────────────────────────────────────────
+# Re-exported helpers for test usage
+# (primary implementations live in api_v1/routes/billing.py)
+# ──────────────────────────────────────────────────────────────
+
+
+def _upsert_subscription(db, user_id: int, **fields):
+    """
+    Update existing subscription row or insert a new one.
+    Convenience re-export for test helpers.
+    """
+    existing = db.execute(
+        "SELECT id FROM subscriptions WHERE user_id = ? ORDER BY start_date DESC LIMIT 1",
+        (user_id,),
+    ).fetchone()
+    if existing:
+        set_parts = ", ".join(f"{k} = ?" for k in fields)
+        values = list(fields.values()) + [existing["id"]]
+        db.execute(f"UPDATE subscriptions SET {set_parts} WHERE id = ?", values)
+    else:
+        cols = ", ".join(["user_id"] + list(fields.keys()))
+        placeholders = ", ".join(["?"] * (1 + len(fields)))
+        values = [user_id] + list(fields.values())
+        db.execute(
+            f"INSERT INTO subscriptions ({cols}) VALUES ({placeholders})", values
+        )

middleware.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+"""
+Middleware — rate limiting, CORS, and access logging
+Sprint 2-3: HRT-28
+"""
+
+import logging
+import time
+from collections import defaultdict
+from datetime import datetime, timezone
+from functools import wraps
+from threading import Lock
+
+from flask import request, jsonify, g
+
+logger = logging.getLogger("turf_saas.middleware")
+
+# ──────────────────────────────────────────────────────────────
+# In-memory rate limiter (100 req/min per IP)
+# For production: replace with Redis-backed counter
+# ──────────────────────────────────────────────────────────────
+
+_rate_store: dict = defaultdict(lambda: {"count": 0, "window_start": 0.0})
+_rate_lock = Lock()
+
+RATE_LIMIT = 100  # max requests
+RATE_WINDOW = 60  # seconds
+
+
+def rate_limit_middleware(app):
+    """Register before_request rate limiting on the Flask app."""
+
+    @app.before_request
+    def check_rate_limit():
+        ip = request.remote_addr or "unknown"
+        now = time.time()
+
+        with _rate_lock:
+            bucket = _rate_store[ip]
+            if now - bucket["window_start"] >= RATE_WINDOW:
+                bucket["count"] = 0
+                bucket["window_start"] = now
+            bucket["count"] += 1
+            count = bucket["count"]
+            remaining = max(0, RATE_LIMIT - count)
+
+        if count > RATE_LIMIT:
+            logger.warning("Rate limit exceeded for IP %s", ip)
+            resp = jsonify({"error": "Trop de requêtes. Limite: 100/min par IP."})
+            resp.status_code = 429
+            resp.headers["X-RateLimit-Limit"] = str(RATE_LIMIT)
+            resp.headers["X-RateLimit-Remaining"] = "0"
+            resp.headers["Retry-After"] = str(RATE_WINDOW)
+            return resp
+
+        # Attach headers on all responses via after_request
+        g.rl_remaining = remaining
+
+
+# ──────────────────────────────────────────────────────────────
+# Access logs (timestamped)
+# ──────────────────────────────────────────────────────────────
+
+access_log = logging.getLogger("turf_saas.access")
+
+
+def access_log_middleware(app):
+    """Register after_request access logging on the Flask app."""
+
+    @app.after_request
+    def log_access(response):
+        ip = request.remote_addr or "unknown"
+        ts = datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
+        user_id = getattr(g, "current_user_id", "-")
+        access_log.info(
+            '%s %s %s "%s %s" %s %s',
+            ts,
+            ip,
+            user_id,
+            request.method,
+            request.path,
+            response.status_code,
+            response.content_length or 0,
+        )
+        # Attach rate-limit headers
+        remaining = getattr(g, "rl_remaining", None)
+        if remaining is not None:
+            response.headers["X-RateLimit-Limit"] = str(RATE_LIMIT)
+            response.headers["X-RateLimit-Remaining"] = str(remaining)
+        return response

saas_api.py

@@ -0,0 +1,247 @@
+#!/usr/bin/env python3
+"""
+Turf SaaS API v1 — Auth JWT + Multi-tenant
+Sprint 2-3: HRT-28
+
+Run:
+    FLASK_ENV=development ./venv/bin/python saas_api.py
+
+Ports (isolated from production):
+  Portal:       8793
+  SaaS API:     8792   ← this file
+  Dashboard:    8791
+  Combined API: 8790
+"""
+
+import os
+import logging
+import logging.handlers
+import sys
+
+from flask import Flask, jsonify, g, request
+from flask_cors import CORS
+from flask_jwt_extended import JWTManager, get_jwt
+
+from auth_db import init_auth_tables
+from auth import (
+    auth_bp,
+    jwt_required_middleware,
+    plan_required,
+    free_daily_limit_check,
+    _get_user_by_id,
+)
+from middleware import rate_limit_middleware, access_log_middleware
+
+# ──────────────────────────────────────────────────────────────
+# Logging setup
+# ──────────────────────────────────────────────────────────────
+
+LOG_DIR = os.path.join(os.path.dirname(__file__), "logs")
+os.makedirs(LOG_DIR, exist_ok=True)
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    handlers=[
+        logging.StreamHandler(sys.stdout),
+        logging.handlers.RotatingFileHandler(
+            os.path.join(LOG_DIR, "saas_api.log"),
+            maxBytes=5 * 1024 * 1024,
+            backupCount=3,
+        ),
+    ],
+)
+
+# ──────────────────────────────────────────────────────────────
+# App factory
+# ──────────────────────────────────────────────────────────────
+
+
+def create_app(test_config=None):
+    app = Flask(__name__)
+
+    # JWT config
+    app.config["JWT_SECRET_KEY"] = os.environ.get(
+        "JWT_SECRET_KEY", "CHANGE_ME_IN_PRODUCTION_" + os.urandom(24).hex()
+    )
+    app.config["JWT_ACCESS_TOKEN_EXPIRES"] = 900  # 15 minutes
+    app.config["JWT_REFRESH_TOKEN_EXPIRES"] = 2592000  # 30 days
+
+    if test_config:
+        app.config.update(test_config)
+
+    # CORS — SaaS domain + localhost for dev
+    CORS(
+        app,
+        origins=os.environ.get(
+            "CORS_ORIGINS",
+            "http://localhost:8793,http://127.0.0.1:8793,https://turf-ia.h3r7.tech",
+        ).split(","),
+        methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"],
+        allow_headers=["Content-Type", "Authorization"],
+        supports_credentials=True,
+    )
+
+    # JWT
+    jwt = JWTManager(app)
+
+    # ── JWT error handlers ────────────────────────────────────
+    @jwt.expired_token_loader
+    def expired_token(_jwt_header, _jwt_payload):
+        return jsonify({"error": "Token expiré"}), 401
+
+    @jwt.invalid_token_loader
+    def invalid_token(reason):
+        return jsonify({"error": "Token invalide", "detail": reason}), 422
+
+    @jwt.unauthorized_loader
+    def unauthorized(reason):
+        return jsonify({"error": "Token manquant ou invalide", "detail": reason}), 401
+
+    # ── Register middleware ───────────────────────────────────
+    rate_limit_middleware(app)
+    access_log_middleware(app)
+
+    # ── Blueprints ────────────────────────────────────────────
+    app.register_blueprint(auth_bp)
+
+    # ── Predictions routes (multi-tenant plan check) ──────────
+
+    @app.route("/api/v1/predictions", methods=["GET"])
+    @jwt_required_middleware
+    @free_daily_limit_check
+    def predictions():
+        """
+        GET /api/v1/predictions
+        - free:    Top 3 uniquement (déjà filtrées par le moteur ML)
+        - premium: toutes courses + alertes Telegram
+        - pro:     API complète + export CSV disponible
+        """
+        user = g.current_user
+        plan = user["plan"]
+
+        # Forward to combined_api for actual predictions
+        import requests as req
+
+        try:
+            params = dict(request.args)
+            resp = req.get(
+                "http://localhost:8790/api/predictions",
+                params=params,
+                timeout=10,
+            )
+            data = resp.json()
+        except Exception as e:
+            return jsonify(
+                {"error": "Service prédictions indisponible", "detail": str(e)}
+            ), 503
+
+        # Plan filtering
+        if plan == "free":
+            # Top 3 only
+            if isinstance(data, list):
+                data = [
+                    {k: v for k, v in p.items() if k not in ("score_detaille",)}
+                    for p in data[:3]
+                ]
+            return jsonify({"plan": plan, "predictions": data, "limit": "Top 3"}), 200
+
+        elif plan == "premium":
+            # All courses, but no CSV export
+            return jsonify(
+                {"plan": plan, "predictions": data, "telegram_alerts": True}
+            ), 200
+
+        else:  # pro
+            return jsonify(
+                {
+                    "plan": plan,
+                    "predictions": data,
+                    "telegram_alerts": True,
+                    "csv_export_url": "/api/v1/predictions/export",
+                }
+            ), 200
+
+    @app.route("/api/v1/predictions/export", methods=["GET"])
+    @jwt_required_middleware
+    @plan_required("pro")
+    def predictions_export():
+        """CSV export — pro plan only."""
+        import requests as req
+        import io
+
+        try:
+            resp = req.get(
+                "http://localhost:8790/api/predictions/export",
+                params=dict(request.args),
+                timeout=15,
+            )
+            from flask import Response
+
+            return Response(
+                resp.content,
+                mimetype="text/csv",
+                headers={"Content-Disposition": "attachment; filename=predictions.csv"},
+            )
+        except Exception as e:
+            return jsonify({"error": "Export indisponible", "detail": str(e)}), 503
+
+    @app.route("/api/v1/subscription/upgrade", methods=["GET"])
+    @jwt_required_middleware
+    def subscription_info():
+        """Return available plans and current user plan."""
+        user = g.current_user
+        return jsonify(
+            {
+                "current_plan": user["plan"],
+                "plans": {
+                    "free": {
+                        "price": "0€/mois",
+                        "features": ["Top 3 prédictions", "1 course/jour"],
+                    },
+                    "premium": {
+                        "price": "9.99€/mois",
+                        "features": [
+                            "Toutes les courses",
+                            "Alertes Telegram",
+                            "Historique 30j",
+                        ],
+                    },
+                    "pro": {
+                        "price": "29.99€/mois",
+                        "features": [
+                            "API complète",
+                            "Export CSV",
+                            "Alertes Telegram",
+                            "Historique illimité",
+                            "Support prioritaire",
+                        ],
+                    },
+                },
+                "upgrade_contact": "contact@h3r7.tech",
+            }
+        ), 200
+
+    # ── Health check ──────────────────────────────────────────
+
+    @app.route("/api/v1/health", methods=["GET"])
+    def health():
+        return jsonify(
+            {"status": "ok", "service": "turf-saas-api", "version": "2.3.0"}
+        ), 200
+
+    # Init DB tables on startup
+    with app.app_context():
+        init_auth_tables()
+
+    return app
+
+
+# ──────────────────────────────────────────────────────────────
+# Entrypoint
+# ──────────────────────────────────────────────────────────────
+
+if __name__ == "__main__":
+    app = create_app()
+    port = int(os.environ.get("SAAS_API_PORT", 8792))
+    app.run(host="0.0.0.0", port=port, debug=False)

tests/test_api_v1.py

@@ -0,0 +1,473 @@
+#!/usr/bin/env python3
+"""
+Integration tests for API v1 — HRT-29
+Sprint 3-4: Refacto API /v1/
+
+Run with:
+    cd /home/h3r7/turf_saas
+    source venv/bin/activate
+    python -m pytest tests/test_api_v1.py -v
+"""
+
+import json
+import os
+import sys
+import tempfile
+import pytest
+
+# Ensure local modules are importable
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+# Use a temp file DB for tests (in-memory fails with multiple connections)
+_tmp_db = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
+_tmp_db.close()
+os.environ["TURF_SAAS_DB"] = _tmp_db.name
+os.environ["JWT_SECRET_KEY"] = "test-secret-key"
+
+from app_v1 import create_app
+from auth_db import init_auth_tables
+
+
+# ──────────────────────────────────────────────────────────────
+# Fixtures
+# ──────────────────────────────────────────────────────────────
+
+
+@pytest.fixture(scope="module")
+def app():
+    application = create_app()
+    application.config["TESTING"] = True
+    application.config["JWT_SECRET_KEY"] = "test-secret-key"
+    yield application
+
+
+@pytest.fixture(scope="module")
+def client(app):
+    return app.test_client()
+
+
+@pytest.fixture(scope="module")
+def auth_tokens(client):
+    """Register a user and return tokens for each plan."""
+    tokens = {}
+    plans = {
+        "free": ("free@test.com", "password123"),
+        "premium": ("premium@test.com", "password123"),
+        "pro": ("pro@test.com", "password123"),
+    }
+
+    # Register users
+    for plan, (email, pw) in plans.items():
+        r = client.post(
+            "/api/v1/auth/register",
+            json={"email": email, "password": pw},
+            content_type="application/json",
+        )
+        assert r.status_code in (201, 409), f"register failed for {plan}: {r.data}"
+
+    # Manually set plans in DB using direct sqlite (bypass app context issues)
+    import sqlite3
+
+    db_path = os.environ.get("TURF_SAAS_DB", "/tmp/test_turf.db")
+    conn = sqlite3.connect(db_path)
+    for plan, (email, _) in plans.items():
+        conn.execute("UPDATE users SET plan = ? WHERE email = ?", (plan, email))
+    conn.commit()
+    conn.close()
+
+    # Login and collect tokens
+    for plan, (email, pw) in plans.items():
+        r = client.post(
+            "/api/v1/auth/login",
+            json={"email": email, "password": pw},
+            content_type="application/json",
+        )
+        assert r.status_code == 200, f"login failed for {plan}: {r.data}"
+        data = r.get_json()
+        tokens[plan] = data["access_token"]
+
+    return tokens
+
+
+def auth_header(token: str) -> dict:
+    return {"Authorization": f"Bearer {token}"}
+
+
+# ──────────────────────────────────────────────────────────────
+# Health
+# ──────────────────────────────────────────────────────────────
+
+
+class TestHealth:
+    def test_health_public(self, client):
+        """GET /api/v1/health — no auth required"""
+        r = client.get("/api/v1/health")
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert data["version"] == "1.0"
+        assert "timestamp" in data
+
+    def test_health_returns_json(self, client):
+        r = client.get("/api/v1/health")
+        assert r.content_type.startswith("application/json")
+
+
+# ──────────────────────────────────────────────────────────────
+# Auth
+# ──────────────────────────────────────────────────────────────
+
+
+class TestAuth:
+    def test_register_new_user(self, client):
+        r = client.post(
+            "/api/v1/auth/register",
+            json={"email": "new_test@example.com", "password": "strongpass123"},
+        )
+        assert r.status_code in (201, 409)
+
+    def test_register_short_password(self, client):
+        r = client.post(
+            "/api/v1/auth/register",
+            json={"email": "bad@example.com", "password": "123"},
+        )
+        assert r.status_code == 400
+
+    def test_register_invalid_email(self, client):
+        r = client.post(
+            "/api/v1/auth/register",
+            json={"email": "notemail", "password": "password123"},
+        )
+        assert r.status_code == 400
+
+    def test_login_valid(self, client, auth_tokens):
+        assert "free" in auth_tokens
+
+    def test_login_wrong_password(self, client):
+        r = client.post(
+            "/api/v1/auth/login",
+            json={"email": "free@test.com", "password": "wrongpassword"},
+        )
+        assert r.status_code == 401
+
+    def test_protected_without_token(self, client):
+        r = client.get("/api/v1/courses/today")
+        assert r.status_code == 401
+
+
+# ──────────────────────────────────────────────────────────────
+# Courses
+# ──────────────────────────────────────────────────────────────
+
+
+class TestCourses:
+    def test_today_requires_auth(self, client):
+        r = client.get("/api/v1/courses/today")
+        assert r.status_code == 401
+
+    def test_today_with_auth(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/courses/today",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "courses" in data
+        assert "pagination" in data
+        assert "date" in data
+
+    def test_today_pagination(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/courses/today?limit=5&offset=0",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["pagination"]["limit"] == 5
+        assert data["pagination"]["offset"] == 0
+
+    def test_today_filter_all(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/courses/today?filter=all",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 200
+
+    def test_course_predictions_requires_auth(self, client):
+        r = client.get("/api/v1/courses/1-1/predictions")
+        assert r.status_code == 401
+
+    def test_course_predictions_invalid_id(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/courses/invalid/predictions",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 400
+
+    def test_course_predictions_not_found(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/courses/99-99/predictions",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        # 404 expected since DB is empty; 429 if free daily limit already reached in this session
+        assert r.status_code in (404, 200, 429)  # 200 if gracefully returns empty
+
+
+# ──────────────────────────────────────────────────────────────
+# Predictions
+# ──────────────────────────────────────────────────────────────
+
+
+class TestPredictions:
+    def test_top3_requires_auth(self, client):
+        r = client.get("/api/v1/predictions/top3")
+        assert r.status_code == 401
+
+    def test_top3_free_allowed(self, client, auth_tokens):
+        # Reset daily usage for free user before testing rate-limited endpoint
+        import sqlite3
+
+        db_path = os.environ.get("TURF_SAAS_DB", "/tmp/test_turf.db")
+        conn = sqlite3.connect(db_path)
+        conn.execute(
+            "UPDATE users SET daily_usage=0, last_usage_date=NULL WHERE email='free@test.com'"
+        )
+        conn.commit()
+        conn.close()
+
+        r = client.get(
+            "/api/v1/predictions/top3",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "top3" in data
+
+    def test_all_requires_premium(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/predictions/all",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 403
+
+    def test_all_premium_allowed(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/predictions/all",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "predictions" in data
+        assert "pagination" in data
+
+    def test_all_pro_allowed(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/predictions/all",
+            headers=auth_header(auth_tokens["pro"]),
+        )
+        assert r.status_code == 200
+
+
+# ──────────────────────────────────────────────────────────────
+# Value Bets
+# ──────────────────────────────────────────────────────────────
+
+
+class TestValueBets:
+    def test_requires_auth(self, client):
+        r = client.get("/api/v1/valuebets")
+        assert r.status_code == 401
+
+    def test_free_forbidden(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/valuebets",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 403
+
+    def test_premium_allowed(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/valuebets",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "valuebets" in data
+        assert "pagination" in data
+
+    def test_min_odds_filter(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/valuebets?min_odds=3.0",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["min_odds"] == 3.0
+
+
+# ──────────────────────────────────────────────────────────────
+# Backtest
+# ──────────────────────────────────────────────────────────────
+
+
+class TestBacktest:
+    def test_requires_auth(self, client):
+        r = client.get("/api/v1/backtest")
+        assert r.status_code == 401
+
+    def test_premium_forbidden(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/backtest",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 403
+
+    def test_pro_allowed(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/backtest",
+            headers=auth_header(auth_tokens["pro"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "summary" in data
+        assert "period" in data
+
+    def test_invalid_date_format(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/backtest?start=31-12-2025",
+            headers=auth_header(auth_tokens["pro"]),
+        )
+        assert r.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Export
+# ──────────────────────────────────────────────────────────────
+
+
+class TestExport:
+    def test_requires_auth(self, client):
+        r = client.get("/api/v1/export/csv")
+        assert r.status_code == 401
+
+    def test_free_forbidden(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/export/csv",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 403
+
+    def test_premium_forbidden(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/export/csv",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 403
+
+    def test_pro_allowed_predictions(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/export/csv?type=predictions",
+            headers=auth_header(auth_tokens["pro"]),
+        )
+        # 200 (CSV) or 400 if table doesn't exist in test DB
+        assert r.status_code in (200, 400)
+        if r.status_code == 200:
+            assert "text/csv" in r.content_type
+
+    def test_invalid_type(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/export/csv?type=invalid",
+            headers=auth_header(auth_tokens["pro"]),
+        )
+        assert r.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Metrics
+# ──────────────────────────────────────────────────────────────
+
+
+class TestMetrics:
+    def test_requires_auth(self, client):
+        r = client.get("/api/v1/metrics")
+        assert r.status_code == 401
+
+    def test_free_forbidden(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/metrics",
+            headers=auth_header(auth_tokens["free"]),
+        )
+        assert r.status_code == 403
+
+    def test_premium_allowed(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/metrics",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["status"] == "ok"
+        assert "bet_metrics" in data
+        assert "ml_metrics" in data
+        assert "period" in data
+
+    def test_days_parameter(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/metrics?days=7",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 200
+        data = r.get_json()
+        assert data["period"]["days"] == 7
+
+    def test_invalid_days(self, client, auth_tokens):
+        r = client.get(
+            "/api/v1/metrics?days=abc",
+            headers=auth_header(auth_tokens["premium"]),
+        )
+        assert r.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Global error handlers
+# ──────────────────────────────────────────────────────────────
+
+
+class TestErrorHandlers:
+    def test_404_returns_json(self, client):
+        r = client.get("/api/v1/this-does-not-exist")
+        assert r.status_code == 404
+        data = r.get_json()
+        assert data["code"] == 404
+
+    def test_uniform_error_shape(self, client):
+        """All error responses must have {status, message, code}."""
+        r = client.get("/api/v1/this-does-not-exist")
+        data = r.get_json()
+        assert "status" in data
+        assert "message" in data
+        assert "code" in data
+
+
+# ──────────────────────────────────────────────────────────────
+# Swagger docs
+# ──────────────────────────────────────────────────────────────
+
+
+class TestDocs:
+    def test_docs_accessible(self, client):
+        r = client.get("/api/v1/docs")
+        # flasgger returns a redirect or the UI page
+        assert r.status_code in (200, 301, 302)
+
+    def test_apispec_json(self, client):
+        r = client.get("/api/v1/apispec.json")
+        assert r.status_code == 200
+        spec = r.get_json()
+        assert spec["swagger"] == "2.0"
+        assert "paths" in spec

tests/test_auth.py

@@ -0,0 +1,404 @@
+#!/usr/bin/env python3
+"""
+Pytest tests — Auth JWT + Multi-tenant
+Sprint 2-3: HRT-28
+Coverage target: >= 80%
+
+Run:
+    ./venv/bin/pytest tests/test_auth.py -v --tb=short
+    ./venv/bin/pytest tests/test_auth.py -v --cov=auth --cov=auth_db --cov=middleware --cov=saas_api --cov-report=term-missing
+"""
+
+import os
+import sys
+import tempfile
+import json
+import pytest
+
+# Point to a temp SQLite DB for tests
+_tmp_db = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
+_tmp_db.close()
+os.environ["TURF_SAAS_DB"] = _tmp_db.name
+os.environ["JWT_SECRET_KEY"] = "test-secret-key-for-pytest"
+
+# Add project root to path
+sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
+
+from saas_api import create_app  # noqa: E402
+
+TEST_CONFIG = {
+    "TESTING": True,
+    "JWT_SECRET_KEY": "test-secret-key-for-pytest",
+    "JWT_ACCESS_TOKEN_EXPIRES": 900,
+    "JWT_REFRESH_TOKEN_EXPIRES": 2592000,
+}
+
+
+@pytest.fixture(scope="module")
+def app():
+    application = create_app(TEST_CONFIG)
+    yield application
+
+
+@pytest.fixture(scope="module")
+def client(app):
+    return app.test_client()
+
+
+# ──────────────────────────────────────────────────────────────
+# Health
+# ──────────────────────────────────────────────────────────────
+
+
+class TestHealth:
+    def test_health_ok(self, client):
+        resp = client.get("/api/v1/health")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert data["status"] == "ok"
+        assert data["service"] == "turf-saas-api"
+
+
+# ──────────────────────────────────────────────────────────────
+# Registration
+# ──────────────────────────────────────────────────────────────
+
+
+class TestRegister:
+    def test_register_success(self, client):
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "user_test@example.com", "password": "password123"},
+        )
+        assert resp.status_code == 201
+        data = resp.get_json()
+        assert "user_id" in data
+
+    def test_register_duplicate(self, client):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "dup@example.com", "password": "password123"},
+        )
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "dup@example.com", "password": "password123"},
+        )
+        assert resp.status_code == 409
+
+    def test_register_invalid_email(self, client):
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "notanemail", "password": "password123"},
+        )
+        assert resp.status_code == 400
+
+    def test_register_short_password(self, client):
+        resp = client.post(
+            "/api/v1/auth/register",
+            json={"email": "shortpw@example.com", "password": "abc"},
+        )
+        assert resp.status_code == 400
+
+    def test_register_missing_fields(self, client):
+        resp = client.post("/api/v1/auth/register", json={})
+        assert resp.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Login
+# ──────────────────────────────────────────────────────────────
+
+
+class TestLogin:
+    @pytest.fixture(autouse=True)
+    def create_user(self, client):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "login@example.com", "password": "loginpass1"},
+        )
+
+    def test_login_success(self, client):
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "login@example.com", "password": "loginpass1"},
+        )
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "access_token" in data
+        assert "refresh_token" in data
+        assert data["plan"] == "free"
+
+    def test_login_wrong_password(self, client):
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "login@example.com", "password": "wrongpass"},
+        )
+        assert resp.status_code == 401
+
+    def test_login_unknown_email(self, client):
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "ghost@example.com", "password": "anypass"},
+        )
+        assert resp.status_code == 401
+
+    def test_login_missing_fields(self, client):
+        resp = client.post("/api/v1/auth/login", json={"email": "login@example.com"})
+        assert resp.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Token refresh
+# ──────────────────────────────────────────────────────────────
+
+
+class TestRefresh:
+    @pytest.fixture(autouse=True)
+    def setup(self, client):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "refresh@example.com", "password": "refreshpass1"},
+        )
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "refresh@example.com", "password": "refreshpass1"},
+        )
+        tokens = resp.get_json()
+        self.refresh_token = tokens["refresh_token"]
+
+    def test_refresh_success(self, client):
+        resp = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": self.refresh_token},
+        )
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "access_token" in data
+        assert "refresh_token" in data
+        # New refresh token should differ from old
+        assert data["refresh_token"] != self.refresh_token
+
+    def test_refresh_token_rotation(self, client):
+        """Old refresh token must be invalid after rotation."""
+        client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": self.refresh_token},
+        )
+        resp2 = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": self.refresh_token},
+        )
+        assert resp2.status_code == 401
+
+    def test_refresh_invalid_token(self, client):
+        resp = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": "completely.invalid.token"},
+        )
+        assert resp.status_code == 401
+
+    def test_refresh_missing_token(self, client):
+        resp = client.post("/api/v1/auth/refresh", json={})
+        assert resp.status_code == 400
+
+
+# ──────────────────────────────────────────────────────────────
+# Logout
+# ──────────────────────────────────────────────────────────────
+
+
+class TestLogout:
+    @pytest.fixture(autouse=True)
+    def setup(self, client):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "logout@example.com", "password": "logoutpass1"},
+        )
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "logout@example.com", "password": "logoutpass1"},
+        )
+        tokens = resp.get_json()
+        self.refresh_token = tokens["refresh_token"]
+        self.access_token = tokens["access_token"]
+
+    def test_logout_success(self, client):
+        resp = client.post(
+            "/api/v1/auth/logout",
+            json={"refresh_token": self.refresh_token},
+        )
+        assert resp.status_code == 200
+
+    def test_refresh_after_logout_fails(self, client):
+        client.post("/api/v1/auth/logout", json={"refresh_token": self.refresh_token})
+        resp = client.post(
+            "/api/v1/auth/refresh",
+            json={"refresh_token": self.refresh_token},
+        )
+        assert resp.status_code == 401
+
+    def test_logout_no_token(self, client):
+        resp = client.post("/api/v1/auth/logout", json={})
+        assert resp.status_code == 200
+
+
+# ──────────────────────────────────────────────────────────────
+# JWT middleware — protected routes
+# ──────────────────────────────────────────────────────────────
+
+
+class TestJWTMiddleware:
+    @pytest.fixture(autouse=True)
+    def setup(self, client):
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "protected@example.com", "password": "protect123"},
+        )
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "protected@example.com", "password": "protect123"},
+        )
+        self.access_token = resp.get_json()["access_token"]
+
+    def test_subscription_info_requires_auth(self, client):
+        resp = client.get("/api/v1/subscription/upgrade")
+        assert resp.status_code == 401
+
+    def test_subscription_info_with_token(self, client):
+        resp = client.get(
+            "/api/v1/subscription/upgrade",
+            headers={"Authorization": f"Bearer {self.access_token}"},
+        )
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "current_plan" in data
+        assert data["current_plan"] == "free"
+
+    def test_invalid_token_rejected(self, client):
+        resp = client.get(
+            "/api/v1/subscription/upgrade",
+            headers={"Authorization": "Bearer invalid.token.here"},
+        )
+        assert resp.status_code in (401, 422)
+
+
+# ──────────────────────────────────────────────────────────────
+# Plan checks
+# ──────────────────────────────────────────────────────────────
+
+
+class TestPlanMiddleware:
+    @pytest.fixture(autouse=True)
+    def setup(self, client, app):
+        # Register free user
+        client.post(
+            "/api/v1/auth/register",
+            json={"email": "free_plan@example.com", "password": "freepass1"},
+        )
+        resp = client.post(
+            "/api/v1/auth/login",
+            json={"email": "free_plan@example.com", "password": "freepass1"},
+        )
+        self.free_token = resp.get_json()["access_token"]
+
+        # Upgrade user to pro directly in DB for testing
+        import sqlite3
+
+        db_path = os.environ["TURF_SAAS_DB"]
+        conn = sqlite3.connect(db_path)
+        conn.execute(
+            "INSERT OR IGNORE INTO users (email, password_hash, plan) VALUES (?,?,?)",
+            ("pro_plan@example.com", "$2b$12$placeholder", "pro"),
+        )
+        conn.commit()
+        conn.close()
+
+        # Login pro user using JWT created manually via app context
+        with app.app_context():
+            from flask_jwt_extended import create_access_token
+
+            conn = sqlite3.connect(db_path)
+            row = conn.execute(
+                "SELECT id FROM users WHERE email='pro_plan@example.com'"
+            ).fetchone()
+            conn.close()
+            self.pro_token = create_access_token(
+                identity=str(row[0]),
+                additional_claims={"plan": "pro", "email": "pro_plan@example.com"},
+            )
+
+    def test_export_blocked_for_free(self, client):
+        resp = client.get(
+            "/api/v1/predictions/export",
+            headers={"Authorization": f"Bearer {self.free_token}"},
+        )
+        assert resp.status_code == 403
+        data = resp.get_json()
+        assert "Plan insuffisant" in data["error"]
+
+    def test_export_allowed_for_pro(self, client):
+        resp = client.get(
+            "/api/v1/predictions/export",
+            headers={"Authorization": f"Bearer {self.pro_token}"},
+        )
+        # 503 is expected because no backend is running; 403 would be wrong
+        assert resp.status_code != 403
+
+    def test_upgrade_info_shows_plans(self, client):
+        resp = client.get(
+            "/api/v1/subscription/upgrade",
+            headers={"Authorization": f"Bearer {self.free_token}"},
+        )
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "free" in data["plans"]
+        assert "premium" in data["plans"]
+        assert "pro" in data["plans"]
+
+
+# ──────────────────────────────────────────────────────────────
+# Rate limiting
+# ──────────────────────────────────────────────────────────────
+
+
+class TestRateLimiting:
+    def test_rate_limit_headers_present(self, client):
+        resp = client.get("/api/v1/health")
+        assert "X-RateLimit-Limit" in resp.headers
+        assert resp.headers["X-RateLimit-Limit"] == "100"
+
+    def test_rate_limit_remaining_decreases(self, client):
+        r1 = client.get("/api/v1/health")
+        r2 = client.get("/api/v1/health")
+        rem1 = int(r1.headers.get("X-RateLimit-Remaining", 100))
+        rem2 = int(r2.headers.get("X-RateLimit-Remaining", 100))
+        assert rem2 <= rem1
+
+
+# ──────────────────────────────────────────────────────────────
+# DB module
+# ──────────────────────────────────────────────────────────────
+
+
+class TestAuthDB:
+    def test_tables_exist(self):
+        import sqlite3
+
+        conn = sqlite3.connect(os.environ["TURF_SAAS_DB"])
+        tables = {
+            r[0]
+            for r in conn.execute(
+                "SELECT name FROM sqlite_master WHERE type='table'"
+            ).fetchall()
+        }
+        assert "users" in tables
+        assert "subscriptions" in tables
+        assert "refresh_tokens" in tables
+        conn.close()
+
+    def test_get_db_returns_connection(self):
+        from auth_db import get_db
+
+        db = get_db()
+        assert db is not None
+        db.close()