Milestone 3

backend/app/main.py

@@ -0,0 +1,72 @@
+"""Flask application factory and WSGI entry point."""
+
+from __future__ import annotations
+
+import logging
+
+from flask import Flask
+from flask_cors import CORS
+
+from app.api.v1 import bp as v1_bp
+from app.core.config import settings
+from app.core.install_token import (
+    ensure_install_token,
+    log_install_token_banner,
+)
+from app.core.logging import configure_logging
+from app.core.rate_limit import limiter
+from app.services.bootstrap import ensure_system_groups
+from app.services.permissions_seed import seed_all as seed_permissions_and_bindings
+
+
+def _try_bootstrap_at_boot(log: logging.Logger) -> None:
+    """Best-effort: seed system groups + mint an install token if needed.
+
+    Wrapped in try/except because the DB may not be ready (or schema not
+    migrated yet) at the very first boot — gunicorn must still come up so the
+    operator can run `make migrate` and curl /setup afterwards.
+    """
+    try:
+        ensure_system_groups()
+        seed_permissions_and_bindings()
+        token = ensure_install_token()
+        if token is not None:
+            log_install_token_banner(token)
+        else:
+            log.info("metamorph.bootstrap.skipped")
+    except Exception as e:
+        log.warning("metamorph.bootstrap.deferred", extra={"error": str(e)})
+
+
+def create_app() -> Flask:
+    configure_logging(settings.LOG_LEVEL)
+    log = logging.getLogger("metamorph.boot")
+
+    app = Flask(__name__)
+    app.config["MAX_CONTENT_LENGTH"] = 64 * 1024 * 1024  # 64 MB hard cap; per-file limit is 25 MB.
+
+    CORS(
+        app,
+        origins=settings.cors_origins,
+        supports_credentials=True,
+        max_age=600,
+    )
+
+    limiter.init_app(app)
+    app.register_blueprint(v1_bp)
+
+    log.info(
+        "metamorph.api.boot",
+        extra={
+            "cors_origins": settings.cors_origins,
+            "log_level": settings.LOG_LEVEL,
+            "evidence_dir": settings.EVIDENCE_DIR,
+        },
+    )
+
+    _try_bootstrap_at_boot(log)
+    return app
+
+
+# WSGI entry point used by gunicorn (`gunicorn app.main:app`).
+app = create_app()