from __future__ import annotations

from pathlib import Path

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from fastapi.staticfiles import StaticFiles

from app.api import auth, elaboracao, health, logs, pesquisa, repositorio, session, visualizacao
from app.services import auth_service


app = FastAPI(
    title="MESA Frame API",
    version="1.0.0",
    description="Backend FastAPI para o app MESA (Elaboracao + Visualizacao)",
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.middleware("http")
async def auth_middleware(request, call_next):  # type: ignore[no-untyped-def]
    path = request.url.path
    if request.method.upper() == "OPTIONS":
        return await call_next(request)

    if path.startswith("/api"):
        if path == "/api/health" or path == "/api/auth/login":
            return await call_next(request)

        token = auth_service.extract_token_from_request(request)
        user = auth_service.get_user_by_token(token)
        if user is None:
            return JSONResponse(status_code=401, content={"detail": "Login obrigatorio"})
        request.state.auth_user = user
        request.state.auth_token = token

    return await call_next(request)


app.include_router(health.router)
app.include_router(auth.router)
app.include_router(session.router)
app.include_router(elaboracao.router)
app.include_router(visualizacao.router)
app.include_router(pesquisa.router)
app.include_router(repositorio.router)
app.include_router(logs.router)


def _mount_frontend_if_exists() -> None:
    frontend_dist = Path(__file__).resolve().parents[2] / "frontend" / "dist"
    index_file = frontend_dist / "index.html"
    if not index_file.exists():
        return

    # Serve the entire Vite build output so root-level files from public/
    # (e.g. /logo_mesa.png) and hashed /assets files are both available.
    app.mount("/", StaticFiles(directory=frontend_dist, html=True), name="frontend")


_mount_frontend_if_exists()