P42 Dashboard: erster Stand

FastAPI-Backend und React-Frontend mit Konten, Sendungsverfolgung,
Projekt-Artikeln, Vorrat & Einkauf mit Rezeptabgleich, Reise-Weltkarte,
Kanban-Projekten mit Priorität, Server-Monitoring und den Designs
Matrix und Blackwall. Betrieb per Docker hinter nginx (siehe DEPLOY.md).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/app/main.py

@@ -0,0 +1,72 @@
+"""P42 Dashboard – FastAPI-Backend.
+
+Liefert die API unter /api, die hochgeladenen Bilder unter /uploads
+und (falls gebaut) das React-Frontend aus frontend/dist.
+"""
+import re
+
+from fastapi import Depends, FastAPI, HTTPException, Request
+from fastapi.middleware.gzip import GZipMiddleware
+from fastapi.responses import FileResponse, JSONResponse
+from fastapi.staticfiles import StaticFiles
+
+from . import auth, haushalt, kanban, links, monitoring, projects, reisen, rezept
+from .auth import current_user
+from .config import FRONTEND_DIST
+from .tracking import track
+
+app = FastAPI(title="P42 Dashboard", docs_url="/api/docs", openapi_url="/api/openapi.json")
+# Komprimiert u. a. die JS-Bundles und die Weltkarte (~740 KB → ~200 KB)
+app.add_middleware(GZipMiddleware, minimum_size=1000)
+
+
+# ---------- Fehler einheitlich als {"error": "..."} ----------
+
+@app.exception_handler(HTTPException)
+async def http_error(_: Request, exc: HTTPException):
+    return JSONResponse({"error": exc.detail}, status_code=exc.status_code)
+
+
+@app.exception_handler(projects.ValidationError)
+@app.exception_handler(links.ValidationError)
+async def validation_error(_: Request, exc: ValueError):
+    return JSONResponse({"error": str(exc)}, status_code=400)
+
+
+# ---------- API ----------
+
+app.include_router(auth.router)
+app.include_router(links.router)
+app.include_router(projects.router)
+app.include_router(monitoring.router)
+app.include_router(haushalt.router)
+app.include_router(rezept.router)
+app.include_router(reisen.router)
+app.include_router(kanban.router)
+
+
+@app.get("/api/track")
+async def get_tracking(number: str = "", _: dict = Depends(current_user)):
+    number = re.sub(r"\s+", "", number).upper()
+    if not re.fullmatch(r"[A-Z0-9-]{6,40}", number):
+        raise HTTPException(400, "Ungültige Sendungsnummer.")
+    return await track(number)
+
+
+@app.api_route("/api/{path:path}", methods=["GET", "POST", "PUT", "PATCH", "DELETE"], include_in_schema=False)
+def api_not_found(path: str):
+    raise HTTPException(404, "Nicht gefunden.")
+
+
+# ---------- React-Frontend (nach `npm run build`) ----------
+
+if (FRONTEND_DIST / "index.html").exists():
+    app.mount("/assets", StaticFiles(directory=FRONTEND_DIST / "assets"), name="assets")
+
+    @app.get("/{path:path}", include_in_schema=False)
+    def spa(path: str):
+        file = (FRONTEND_DIST / path).resolve()
+        if path and file.is_file() and file.is_relative_to(FRONTEND_DIST.resolve()):
+            return FileResponse(file)
+        # Alle anderen Pfade übernimmt der React-Router
+        return FileResponse(FRONTEND_DIST / "index.html", headers={"Cache-Control": "no-cache"})