main

"""
Task Management API - Main Application

A complete FastAPI application demonstrating:
- REST API design
- SQLAlchemy ORM
- JWT authentication
- Pydantic validation
- Dependency injection
"""

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

from .database import engine, Base
from .routers import users, tasks


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Application lifespan - create tables on startup."""
    Base.metadata.create_all(bind=engine)
    yield
    # Cleanup on shutdown if needed


app = FastAPI(
    title="Task Management API",
    description="A complete REST API for managing tasks with authentication",
    version="1.0.0",
    lifespan=lifespan,
)

# CORS middleware for frontend integration
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # Configure for production
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routers
app.include_router(users.router, prefix="/api/users", tags=["users"])
app.include_router(tasks.router, prefix="/api/tasks", tags=["tasks"])


@app.get("/")
async def root():
    """API root endpoint."""
    return {
        "message": "Task Management API",
        "docs": "/docs",
        "version": "1.0.0",
    }


@app.get("/health")
async def health_check():
    """Health check endpoint for monitoring."""
    return {"status": "healthy"}


# =============================================================================
# Run with: uvicorn app.main:app --reload
# API docs at: http://localhost:8000/docs
# =============================================================================