from contextlib import asynccontextmanager

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

from app.api import admin_providers, admin_reload
from app.core.config import settings
from app.core.logging import get_logger, setup_logging
from app.db.database import init_db

setup_logging()
logger = get_logger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Admin App lifespan manager."""
    logger.info("admin_app_starting")
    await init_db()

    # 可以在这里加载特定的 Admin 缓存或预热

    yield
    logger.info("admin_app_shutdown")


app = FastAPI(
    title=f"{settings.app_name} Admin Console",
    description="Administrative Control Plane for DreamWeaver.",
    version="0.1.0",
    lifespan=lifespan,
)

# Admin 后台通常允许更宽松的 CORS，或者特定的管理域名
app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.cors_origins, # 或者专门的 ADMIN_CORS_ORIGINS
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 根据配置开关挂载路由
if settings.enable_admin_console:
    app.include_router(admin_providers.router, prefix="/admin", tags=["admin-providers"])
    app.include_router(admin_reload.router, prefix="/admin", tags=["admin-reload"])
else:
    @app.get("/admin/{path:path}")
    @app.post("/admin/{path:path}")
    @app.put("/admin/{path:path}")
    @app.delete("/admin/{path:path}")
    async def admin_disabled(path: str):
        from fastapi import HTTPException
        raise HTTPException(
            status_code=403,
            detail="Admin console is disabled in environment configuration."
        )

@app.get("/health")
async def health_check():
    return {"status": "ok", "service": "admin-backend"}