init

backend/server.py

@@ -0,0 +1,48 @@
+"""FastAPI-Server des Planers (Phase 2).
+
+Start: `uvicorn server:app --port 8100` aus backend/ — OHNE --reload: der Reload killt
+laufende Scans im eigenen Prozess (Creator-Lehre; siehe README, Selbst-Änderungs-Regel).
+"""
+import sys
+from contextlib import asynccontextmanager
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+
+from fastapi import FastAPI  # noqa: E402
+from fastapi.staticfiles import StaticFiles  # noqa: E402
+from starlette.responses import Response  # noqa: E402
+
+import agents  # noqa: E402
+import config  # noqa: E402
+import database as db  # noqa: E402
+from routes import router  # noqa: E402
+
+FRONTEND_DIST = config.PROJECT_ROOT / "frontend" / "dist"
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    await db.init_db()
+    agents.on_event = db.add_event
+    yield
+    await db.close_db()
+
+
+class CachedStatic(StaticFiles):
+    """assets/ = unveränderlich (gehashte Namen), index.html = nie cachen."""
+
+    def file_response(self, full_path, stat_result, scope, status_code=200) -> Response:
+        resp = super().file_response(full_path, stat_result, scope, status_code)
+        pfad = str(full_path)
+        if "/assets/" in pfad:
+            resp.headers["Cache-Control"] = "public, max-age=31536000, immutable"
+        elif pfad.endswith("index.html"):
+            resp.headers["Cache-Control"] = "no-cache"
+        return resp
+
+
+app = FastAPI(title="Planer", lifespan=lifespan)
+app.include_router(router)
+if FRONTEND_DIST.exists():
+    app.mount("/", CachedStatic(directory=FRONTEND_DIST, html=True), name="frontend")