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

from app.api import auth_router, todos_router, users_router
from app.db.database import Base, engine

# Create tables in database
Base.metadata.create_all(bind=engine)

app = FastAPI(
    title="Simple Todo Application with Authentication",
    description="A todo application API built with FastAPI and user authentication",
    version="0.2.0",
)

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

# Include routers
app.include_router(auth_router)
app.include_router(users_router)
app.include_router(todos_router)

# Health endpoint
@app.get("/health", tags=["Health"])
def health_check():
    """
    Health check endpoint to verify the API is running
    """
    return {"status": "healthy"}


@app.get("/", tags=["Root"])
def read_root():
    """
    Root endpoint with links to API documentation
    """
    return {
        "message": "Welcome to the Simple Todo Application API with User Authentication",
        "documentation": "/docs",
        "alternative_doc": "/redoc",
    }