from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from .database import Base, engine
from .routers import auth, pdfs


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Create all tables on startup (use Alembic for migrations in production)
    Base.metadata.create_all(bind=engine)
    yield


app = FastAPI(title="LMS API", lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["http://localhost:3000"],  # Next.js dev server
    allow_credentials=True,                   # required for cookies
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(auth.router, prefix="/api")
app.include_router(pdfs.router, prefix="/api")