06/15 Phase 1 + 2 codes

app/__init__.py

@@ -0,0 +1,100 @@
+"""Application factory."""
+from flask import Flask, render_template
+from app.config import get_config
+from app.extensions import (db, migrate, login_manager, csrf, babel, limiter)
+
+
+def create_app(config_object=None):
+    app = Flask(__name__)
+    app.config.from_object(config_object or get_config())
+
+    _init_extensions(app)
+    _init_login(app)
+    _init_babel(app)
+    _register_blueprints(app)
+    _register_errorhandlers(app)
+    _register_context(app)
+    _register_cli(app)
+
+    return app
+
+
+def _init_extensions(app):
+    # Honor X-Forwarded-* from the Nginx reverse proxy (scheme, host, client IP).
+    # Correct is_secure, secure cookies, and rate-limit keying behind the proxy.
+    from werkzeug.middleware.proxy_fix import ProxyFix
+    app.wsgi_app = ProxyFix(app.wsgi_app, x_for=1, x_proto=1, x_host=1)
+
+    db.init_app(app)
+    migrate.init_app(app, db)
+    csrf.init_app(app)
+    limiter.init_app(app)
+    # ensure models are imported so migrations see them
+    from app import models  # noqa: F401
+
+
+def _init_login(app):
+    login_manager.init_app(app)
+
+    @login_manager.user_loader
+    def load_user(user_id):
+        from app.models.user import User
+        return User.query.get(int(user_id))
+
+
+def _init_babel(app):
+    from app.blueprints.i18n.routes import select_locale
+    babel.init_app(app, locale_selector=select_locale)
+
+
+def _register_blueprints(app):
+    from app.blueprints.main.routes import main_bp
+    from app.blueprints.auth.routes import auth_bp
+    from app.blueprints.i18n.routes import i18n_bp
+    from app.blueprints.listings.routes import listings_bp
+    app.register_blueprint(main_bp)
+    app.register_blueprint(auth_bp)
+    app.register_blueprint(i18n_bp)
+    app.register_blueprint(listings_bp)
+
+
+def _register_errorhandlers(app):
+    @app.errorhandler(403)
+    def forbidden(e):
+        return render_template("errors/403.html"), 403
+
+    @app.errorhandler(404)
+    def not_found(e):
+        return render_template("errors/404.html"), 404
+
+    @app.errorhandler(500)
+    def server_error(e):
+        return render_template("errors/500.html"), 500
+
+
+def _register_context(app):
+    from flask_babel import get_locale
+    from flask import request
+
+    def merge_query(**overrides):
+        merged = request.args.to_dict()
+        merged.update({k: v for k, v in overrides.items() if v is not None})
+        return merged
+
+    @app.context_processor
+    def inject_globals():
+        return {
+            "get_locale": get_locale,
+            "merge_query": merge_query,
+            "SUPPORTED_LOCALES": app.config["SUPPORTED_LOCALES"],
+            "TURNSTILE_SITE_KEY": app.config.get("TURNSTILE_SITE_KEY", ""),
+        }
+
+
+def _register_cli(app):
+    @app.cli.command("expire-listings")
+    def expire_listings():
+        """Sweep: flip past-due active listings to expired."""
+        from app.services.listings import expire_due_listings
+        n = expire_due_listings()
+        print(f"Expired {n} listing(s).")