"""FastAPI application entry point."""
from contextlib import asynccontextmanager
from fastapi import FastAPI

from .database import init_db, seed_default_providers
from .services.logger import async_logger
from .routes import health_router, chat_router, openai_router, anthropic_router


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Application lifespan handler."""
    # Startup
    await init_db()
    await seed_default_providers()
    await async_logger.start()

    yield

    # Shutdown
    await async_logger.stop()


app = FastAPI(
    title="zzrouter",
    description="AI Model API Proxy Service",
    version="0.1.0",
    lifespan=lifespan
)

# Register routers
app.include_router(health_router)
app.include_router(chat_router)
app.include_router(openai_router)
app.include_router(anthropic_router)


def run_server():
    """Run the server (entry point for script)."""
    import uvicorn
    from .config import HOST, PORT
    uvicorn.run(app, host=HOST, port=PORT)


if __name__ == "__main__":
    run_server()