from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from pathlib import Path

from app.core.config import settings
from app.core.database import engine, Base, async_session_maker
from app.api.v1 import router as api_router
from app.services.event_scheduler import event_scheduler
from app.services.dispute_scheduler import dispute_scheduler


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup: create tables
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)

    # Create upload directories
    upload_dir = Path(settings.UPLOAD_DIR)
    (upload_dir / "avatars").mkdir(parents=True, exist_ok=True)
    (upload_dir / "covers").mkdir(parents=True, exist_ok=True)
    (upload_dir / "proofs").mkdir(parents=True, exist_ok=True)

    # Start schedulers
    await event_scheduler.start(async_session_maker)
    await dispute_scheduler.start(async_session_maker)

    yield

    # Shutdown
    await event_scheduler.stop()
    await dispute_scheduler.stop()
    await engine.dispose()


app = FastAPI(
    title=settings.APP_NAME,
    version="1.0.0",
    lifespan=lifespan,
)

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["http://localhost:3000", "http://127.0.0.1:3000"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Static files for uploads
upload_path = Path(settings.UPLOAD_DIR)
if upload_path.exists():
    app.mount("/uploads", StaticFiles(directory=str(upload_path)), name="uploads")

# API routes
app.include_router(api_router)


@app.get("/health")
async def health_check():
    return {"status": "ok"}