"""根路由。

所有 api/v1/* 端点都允许匿名访问（ping、JWT 登录），业务 API 在 ViewSet 层用 permission 拦截。
"""

from django.contrib import admin
from django.urls import path, include
from rest_framework_simplejwt.views import (
    TokenObtainPairView,
    TokenRefreshView,
)
from rest_framework.permissions import AllowAny
from rest_framework.decorators import (
    authentication_classes,
    permission_classes,
    api_view,
)
from rest_framework.response import Response
from datetime import datetime, timezone
import django
import granian
import sys

from apps.core.urls import core_urlpatterns
from apps.finance.views import public_statement
from apps.core.demo import enter_demo


@api_view(["GET"])
@authentication_classes([])
@permission_classes([AllowAny])
def ping(request):
    return Response({
        "ok": True,
        "service": "dealerhub",
        "ts": datetime.now(timezone.utc).isoformat(),
        "versions": {
            "python": sys.version.split()[0],
            "django": django.get_version(),
            "granian": getattr(granian, "__version__", "unknown"),
        },
    })


def spa_index(request):
    """Vue3 SPA 入口（hash 路由，仅需托管根路径）。"""
    from django.conf import settings
    from django.http import FileResponse, JsonResponse

    index_path = settings.FRONTEND_DIST / "index.html"
    if index_path.exists():
        return FileResponse(index_path.open("rb"), content_type="text/html")
    return JsonResponse(
        {"detail": "前端资源未构建：请先执行 npm run build 并重新打包镜像"},
        status=404,
    )


urlpatterns = [
    path("admin/", admin.site.urls),
    path("api/v1/ping/", ping, name="ping"),
    path("api/v1/auth/token/", TokenObtainPairView.as_view(), name="token_obtain_pair"),
    path("api/v1/auth/token/refresh/", TokenRefreshView.as_view(), name="token_refresh"),
    path("api/v1/open/statements/<uuid:token>/", public_statement, name="public-statement"),
    path("api/v1/demo/enter/", enter_demo, name="demo-enter"),
    path("api/v1/", include(core_urlpatterns)),
    # Vue3 SPA（静态资源走 /static/ 由 whitenoise 托管）
    # 营销官网（批次 C3）：/site/* 静态页，与 SPA 分离便于 SEO
    path("site/", include("apps.website.urls")),
    path("", spa_index, name="spa-index"),
]