from fastapi import FastAPI, Request, Depends
from fastapi.middleware.cors import CORSMiddleware
from app.api import auth, users, orders, payments
from app.core.config import settings
from app.db.database import engine, Base
from app.middleware.error_handler import error_handler
from fastapi.exceptions import RequestValidationError
from starlette.exceptions import HTTPException as StarletteHTTPException

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

app = FastAPI(
    title="活牛采购智能数字化系统API",
    description="活牛采购智能数字化系统后端API接口",
    version="1.0.0",
)

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

# Add exception handlers
app.add_exception_handler(StarletteHTTPException, error_handler)
app.add_exception_handler(RequestValidationError, error_handler)
app.add_exception_handler(Exception, error_handler)

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

@app.get("/")
async def root():
    return {"message": "活牛采购智能数字化系统后端服务", "version": "1.0.0"}

@app.get("/health")
async def health_check():
    return {"status": "healthy"}