from pathlib import Path

from fastapi import FastAPI
from fastapi.responses import FileResponse
from fastapi.staticfiles import StaticFiles

from app.config import UPLOAD_DIR
from app.database import init_db
from app.routers import web, api

app = FastAPI(title="Mailova 星笺")

UPLOAD_DIR.mkdir(exist_ok=True)
STATIC_DIR = Path(__file__).resolve().parent / "static"


# Cache-Control for uploaded images (30 days, immutable — filenames contain UUID)
@app.middleware("http")
async def cache_control_middleware(request, call_next):
    response = await call_next(request)
    if request.url.path.startswith("/uploads/"):
        response.headers["Cache-Control"] = "public, max-age=2592000, immutable"
    return response


@app.get("/favicon.ico")
async def favicon():
    return FileResponse(STATIC_DIR / "favicon.ico", media_type="image/x-icon")


app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")
app.mount("/uploads", StaticFiles(directory=str(UPLOAD_DIR)), name="uploads")

app.include_router(web.router)
app.include_router(api.router)

init_db()

if __name__ == "__main__":
    import uvicorn
    uvicorn.run("app.main:app", host="0.0.0.0", port=8000, reload=True)