src/auth/routes.py : route /auth/signup (#73)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/auth/routes.py

@@ -1,3 +1,49 @@
-from flask import Blueprint
+from email_validator import EmailNotValidError, validate_email
+from flask import Blueprint, redirect, request
+from werkzeug.security import generate_password_hash
+
+from src.auth import db, mailer, tokens
+from src.utils import logger
 
 auth_bp = Blueprint("auth", __name__, url_prefix="/auth")
+
+MIN_PASSWORD_LENGTH = 8
+
+
+def _redirect_with_error(path: str, error: str, email: str | None = None):
+    url = f"{path}?error={error}"
+    if email:
+        url += f"&email={email}"
+    return redirect(url)
+
+
+@auth_bp.route("/signup", methods=["POST"])
+def signup():
+    email = (request.form.get("email") or "").strip()
+    password = request.form.get("password") or ""
+    password_confirm = request.form.get("password_confirm") or ""
+
+    try:
+        valid = validate_email(email, check_deliverability=False)
+        email = valid.normalized.lower()
+    except EmailNotValidError:
+        return _redirect_with_error("/inscription", "invalid_email", email)
+
+    if len(password) < MIN_PASSWORD_LENGTH:
+        return _redirect_with_error("/inscription", "password_too_short", email)
+    if password != password_confirm:
+        return _redirect_with_error("/inscription", "password_mismatch", email)
+
+    if db.get_user_by_email(email) is not None:
+        return _redirect_with_error("/inscription", "email_taken", email)
+
+    user_id = db.create_user(email, generate_password_hash(password))
+    token = tokens.create_verification_token(user_id)
+    try:
+        mailer.send_verification_email(email, token)
+    except Exception:
+        logger.exception("Échec d'envoi de l'email de vérification")
+        db.delete_user(user_id)
+        return _redirect_with_error("/inscription", "email_send_failed", email)
+
+    return redirect("/connexion?pending_verification=1")