from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from contextlib import asynccontextmanager
from app.api.v1.api import api_router
from app.core.config import settings
from app.db.session import SessionLocal
from app.db.init_db import init_db

@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup
    db = SessionLocal()
    try:
        init_db(db)
    finally:
        db.close()
    yield
    # Shutdown

app = FastAPI(
    title=settings.PROJECT_NAME,
    version=settings.VERSION,
    description="School Portal API - A comprehensive school management system",
    openapi_url="/openapi.json",
    docs_url="/docs",
    redoc_url="/redoc",
    lifespan=lifespan
)

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

app.include_router(api_router, prefix="/api/v1")

@app.get("/")
async def root():
    return {
        "title": settings.PROJECT_NAME,
        "version": settings.VERSION,
        "description": "School Portal API - A comprehensive school management system",
        "documentation": "/docs",
        "health": "/health"
    }

@app.get("/health")
async def health_check():
    return {"status": "healthy", "service": "School Portal API"}