from fastapi import APIRouter, FastAPI, HTTPException
from fastapi.responses import FileResponse, Response
from fastapi.staticfiles import StaticFiles

from app.core.config import configured_path


router = APIRouter(include_in_schema=False)

ADMIN_UI_DIST_PATH = configured_path("ADMIN_UI_DIST_PATH", "admin-ui/dist")
ADMIN_UI_INDEX_PATH = ADMIN_UI_DIST_PATH / "index.html"
ADMIN_UI_ASSETS_PATH = ADMIN_UI_DIST_PATH / "assets"


def mount_admin_assets(app: FastAPI):
    if ADMIN_UI_ASSETS_PATH.is_dir():
        app.mount(
            "/assets",
            StaticFiles(directory=str(ADMIN_UI_ASSETS_PATH)),
            name="admin_ui_assets",
        )


@router.get("/")
def admin_page():
    if not ADMIN_UI_INDEX_PATH.is_file():
        raise HTTPException(status_code=404, detail="管理后台前端文件不存在，请先构建 admin-ui/dist")
    return FileResponse(ADMIN_UI_INDEX_PATH, headers={"Cache-Control": "no-store"})


@router.get("/favicon.ico")
def favicon():
    icon_path = ADMIN_UI_DIST_PATH / "favicon.ico"
    if icon_path.is_file():
        return FileResponse(icon_path, headers={"Cache-Control": "public, max-age=3600"})
    return Response(status_code=204)


@router.get("/platform-config.json")
def admin_platform_config():
    config_path = ADMIN_UI_DIST_PATH / "platform-config.json"
    if not config_path.is_file():
        raise HTTPException(status_code=404, detail="前端平台配置不存在")
    return FileResponse(config_path, headers={"Cache-Control": "no-store"})


@router.get("/logo.svg")
def admin_logo():
    logo_path = ADMIN_UI_DIST_PATH / "logo.svg"
    if not logo_path.is_file():
        raise HTTPException(status_code=404, detail="前端 Logo 不存在")
    return FileResponse(logo_path, headers={"Cache-Control": "public, max-age=3600"})


@router.get("/health")
def health_check():
    return {"status": "ok"}