app/main.py

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from .config import get_settings
from .database import connect_to_mongo, close_mongo_connection
from .routers import auth, pdf

settings = get_settings()

app = FastAPI(
    title="PDF Merger API",
    description="Backend API for merging PDF files with authentication",
    version="1.0.0"
)

# CORS Middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # In production, specify exact origins
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Event Handlers
app.add_event_handler("startup", connect_to_mongo)
app.add_event_handler("shutdown", close_mongo_connection)

# Include Routers
app.include_router(auth.router)
app.include_router(pdf.router)


@app.get("/")
async def root():
    """Health check endpoint."""
    return {"message": "PDF Merger API is running"}