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

from app.config import settings
from app.database import init_db
from app.api.router import api_router
from app.core.exceptions import register_exception_handlers
from app.notifications.manager import notification_manager
from app.ai.manager import ai_manager


@asynccontextmanager
async def lifespan(app: FastAPI):
    await init_db()

    notification_manager.load_providers()

    from app.ai.openai_provider import OpenAIVisionProvider, OpenAITextProvider
    if settings.AI_PROVIDER == "openai":
        ai_manager.register_vision_provider("openai", OpenAIVisionProvider())
        ai_manager.register_text_provider("openai", OpenAITextProvider())

    yield


app = FastAPI(
    title="药箱 API",
    description="家庭药品与应急物资管理系统 API",
    version="1.0.0",
    lifespan=lifespan,
    docs_url="/docs" if settings.DEBUG else None,
    redoc_url="/redoc" if settings.DEBUG else None,
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(api_router, prefix="/api")

register_exception_handlers(app)


@app.get("/health")
async def health_check():
    return {"status": "healthy", "version": "1.0.0"}