from pathlib import Path

from fastapi import FastAPI
from sqladmin import Admin
from sqladmin.authentication import login_required
from starlette.requests import Request
from starlette.responses import Response
from sqlalchemy.ext.asyncio import AsyncEngine

from app.backoffice.admin.admin_view import AdminAdmin
from app.backoffice.admin.auth import AdminAuthBackend
from app.backoffice.credit_view import CreditChargeRequestAdmin, CreditTransactionAdmin
from app.backoffice.dashboard import get_dashboard_context
from app.user.api.user_admin import SocialAccountAdmin, UserAdmin
from config import prj_settings

TEMPLATES_DIR = Path(__file__).parent / "backoffice" / "frontend" / "templates"


class DashboardAdmin(Admin):
    @login_required
    async def index(self, request: Request) -> Response:
        ctx = await get_dashboard_context()
        admin_role = request.session.get("admin_role", "viewer")
        return await self.templates.TemplateResponse(
            request,
            "sqladmin/index.html",
            {"title": "대시보드", "subtitle": "", "admin_role": admin_role, **ctx},
        )


def init_admin(
    app: FastAPI,
    db_engine: AsyncEngine,
    base_url: str = prj_settings.ADMIN_BASE_URL,
) -> Admin:
    auth_backend = AdminAuthBackend(secret_key=prj_settings.ADMIN_SESSION_SECRET)

    admin = DashboardAdmin(
        app,
        db_engine,
        base_url=base_url,
        authentication_backend=auth_backend,
        title="ADO2 관리자",
        templates_dir=str(TEMPLATES_DIR),
    )

    # 사용자 관리
    admin.add_view(UserAdmin)
    admin.add_view(SocialAccountAdmin)

    # 크레딧 관리 (superadmin: 전체, viewer: 읽기 전용)
    admin.add_view(CreditChargeRequestAdmin)
    admin.add_view(CreditTransactionAdmin)

    # 백오피스 설정
    admin.add_view(AdminAdmin)

    return admin