import sys
from contextlib import asynccontextmanager

import uvicorn
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from loguru import logger

from app.api import router as api_router
from app.config import settings
from app.database import check_database, engine, init_db_schema
from app.dependencies import camera_session_manager

logger.remove()
logger.add(
    sys.stderr,
    format="<green>{time:YYYY-MM-DD HH:mm:ss}</green> | <level>{level: <8}</level> | <cyan>{name}</cyan>:<cyan>{function}</cyan> - <level>{message}</level>",
)


@asynccontextmanager
async def lifespan(app: FastAPI):
    await check_database()
    await init_db_schema()
    logger.info("Database connection verified and schema ensured")
    await camera_session_manager.start_archive_retry_loop()
    yield
    await camera_session_manager.shutdown()
    await engine.dispose()
    logger.info("Database engine disposed")


def create_app() -> FastAPI:
    application = FastAPI(
        title="Operation Room Monitor",
        lifespan=lifespan,
    )
    if settings.demo_cors_enabled:
        origins = settings.parsed_demo_cors_origins()
        if origins:
            application.add_middleware(
                CORSMiddleware,
                allow_origins=origins,
                allow_credentials=origins != ["*"],
                allow_methods=["*"],
                allow_headers=["*"],
            )
            logger.info("CORS enabled for demo client; origins={}", origins)
    application.include_router(api_router)
    if settings.demo_orchestrator_enabled:
        from app.routers import demo_orch

        application.include_router(demo_orch.router)
        logger.info(
            "Demo orchestrator enabled: POST /internal/demo/orchestrate-and-start",
        )
    else:
        logger.info(
            "Demo orchestrator disabled (DEMO_ORCHESTRATOR_ENABLED=false): "
            "GET /internal/demo/orchestrator-status for status; "
            "POST /internal/demo/orchestrate-and-start is not registered",
        )
    return application


app = create_app()


def main() -> None:
    uvicorn.run(
        "main:app",
        host="0.0.0.0",
        port=38080,
        reload=True,
    )


if __name__ == "__main__":
    main()