"""会员/履约金页文案：小程序只读 + 客服后台读写。"""
from rest_framework.parsers import JSONParser
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework.views import APIView

from backend.utils import verify_kefu_permission
from jituan.services.display_config import forbid_display_write_in_all_scope, list_response_meta
from jituan.services.recharge_page_copy import (
    PAGE_KEYS,
    club_id_for_admin,
    club_id_for_mini,
    get_admin_regions,
    get_public_regions,
    normalize_page_key,
    save_region,
)

POPUP_PERM = '8080a'


def _page_key_from_request(request):
    if hasattr(request, 'query_params'):
        q = request.query_params.get('page_key')
        if q:
            return q
    data = getattr(request, 'data', None) or {}
    return data.get('page_key') or ''


class RechargePageCopyView(APIView):
    """小程序只读 GET/POST /jituan/recharge-page-copy?page_key=huiyuan|yajin"""
    permission_classes = [IsAuthenticated]
    parser_classes = [JSONParser]

    def get(self, request):
        return self._handle(request)

    def post(self, request):
        return self._handle(request)

    def _handle(self, request):
        page_key = normalize_page_key(_page_key_from_request(request))
        if not page_key:
            return Response({'code': 400, 'msg': f'page_key 须为 {", ".join(sorted(PAGE_KEYS))}'})
        club_id = club_id_for_mini(request)
        regions = get_public_regions(club_id, page_key)
        return Response({
            'code': 0,
            'data': {
                'page_key': page_key,
                'club_id': club_id,
                'regions': regions,
            },
        })


class RechargePageCopyAdminGetView(APIView):
    """后台拉全量区域 POST /jituan/houtai/recharge-page-copy/get"""
    permission_classes = [IsAuthenticated]
    parser_classes = [JSONParser]

    def post(self, request):
        phone = (request.data.get('phone') or request.data.get('username') or '').strip()
        if not phone:
            return Response({'code': 401, 'msg': '缺少客服账号'})
        kefu, permissions = verify_kefu_permission(request, phone)
        if kefu is None:
            return permissions
        if POPUP_PERM not in permissions:
            return Response({'code': 403, 'msg': '无权限管理充值页文案'})

        page_key = normalize_page_key(request.data.get('page_key'))
        if not page_key:
            return Response({'code': 400, 'msg': f'page_key 须为 {", ".join(sorted(PAGE_KEYS))}'})

        club_id = club_id_for_admin(request, request.user)
        regions = get_admin_regions(club_id, page_key)
        return Response({
            'code': 0,
            'data': {
                'page_key': page_key,
                'club_id': club_id,
                'regions': regions,
                **list_response_meta(request),
            },
        })


class RechargePageCopyAdminSaveView(APIView):
    """后台保存某一区域 POST /jituan/houtai/recharge-page-copy/save"""
    permission_classes = [IsAuthenticated]
    parser_classes = [JSONParser]

    def post(self, request):
        phone = (request.data.get('phone') or request.data.get('username') or '').strip()
        if not phone:
            return Response({'code': 401, 'msg': '缺少客服账号'})
        kefu, permissions = verify_kefu_permission(request, phone)
        if kefu is None:
            return permissions
        if POPUP_PERM not in permissions:
            return Response({'code': 403, 'msg': '无权限管理充值页文案'})

        deny = forbid_display_write_in_all_scope(request)
        if deny:
            return deny

        page_key = request.data.get('page_key')
        region_key = request.data.get('region_key')
        title = request.data.get('title') or ''
        items = request.data.get('items')
        if items is None:
            items = request.data.get('items_json')
        enabled = request.data.get('enabled', True)
        sort_order = request.data.get('sort_order')

        club_id = club_id_for_admin(request, request.user)
        data, err = save_region(
            club_id,
            page_key,
            region_key,
            title=title,
            items=items,
            enabled=enabled,
            sort_order=sort_order,
        )
        if err:
            return Response({'code': 400, 'msg': err})
        return Response({
            'code': 0,
            'msg': '保存成功',
            'data': {
                'page_key': normalize_page_key(page_key),
                'club_id': club_id,
                'region': data,
            },
        })