from fastapi import FastAPI, Request, status
from fastapi.responses import JSONResponse
from fastapi.staticfiles import StaticFiles
from fastapi.middleware.cors import CORSMiddleware
from sqlalchemy.exc import SQLAlchemyError
import logging

from apiApp.config import APP_TITLE, APP_VERSION, API_V1_PREFIX, UPLOAD_FOLDER, DATABASE_URL
from apiApp.database import engine, Base
from apiApp.routers import audio_router, recognition_router

# Настройка логирования
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# Создание FastAPI приложения
app = FastAPI(
    title=APP_TITLE,
    version=APP_VERSION,
    docs_url=f"{API_V1_PREFIX}/docs",
    redoc_url=f"{API_V1_PREFIX}/redoc",
    openapi_url=f"{API_V1_PREFIX}/openapi.json"
)

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


# Глобальный обработчик ошибок SQLAlchemy
@app.exception_handler(SQLAlchemyError)
async def sqlalchemy_exception_handler(request: Request, exc: SQLAlchemyError):
    logger.error(f"Database error: {exc}")
    return JSONResponse(
        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
        content={"detail": "Database error occurred"},
    )


# Создание таблиц
@app.on_event("startup")
async def startup_event():
    """Создание таблиц при запуске приложения"""
    try:
        Base.metadata.create_all(bind=engine)
        logger.info("Database tables created successfully")
    except Exception as e:
        logger.error(f"Error creating database tables: {e}")


# Подключение routers
app.include_router(audio_router, prefix=API_V1_PREFIX, tags=["audio"])
app.include_router(recognition_router, prefix=API_V1_PREFIX, tags=["recognition"])

# Статические файлы (для загрузки аудио)
app.mount("/uploads", StaticFiles(directory=str(UPLOAD_FOLDER)), name="uploads")


@app.get("/")
async def root():
    return {
        "application": APP_TITLE,
        "version": APP_VERSION,
        "status": "running"
    }


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


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8000)