"""小程序展示配置：轮播图 / 公告（按俱乐部）。"""
import os
import random
import string

from rest_framework.parsers import FormParser, JSONParser, MultiPartParser
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 config.models import Gonggao, Lunbo
from jituan.services.club_context import resolve_club_id_from_request
from jituan.services.display_config import (
    forbid_display_write_in_all_scope,
    get_gonggao_content,
    get_lunbo_urls,
    list_response_meta,
    LUNBO_PAGE_DASHOU_CENTER,
    LUNBO_PAGE_OPTIONS,
    normalize_page_key,
)
from products.views import delete_from_oss, upload_to_oss, validate_image

POPUP_PERM = '8080a'


class ClubLunboListView(APIView):
    """GET 轮播列表 POST /jituan/houtai/lunbo-list"""
    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': '无权限管理轮播图'})

        page_key = normalize_page_key(request.data.get('page_key'), image_type=1)
        image_type = 2 if page_key == LUNBO_PAGE_DASHOU_CENTER else 1
        urls = get_lunbo_urls(request, page_key=page_key, image_type=image_type)
        return Response({
            'code': 0,
            'data': {
                'page_key': page_key,
                'list': urls,
                'page_options': [{'key': k, 'label': v} for k, v in LUNBO_PAGE_OPTIONS],
                **list_response_meta(request),
            },
        })


class ClubLunboManageView(APIView):
    """轮播增删 POST /jituan/houtai/lunbo-manage"""
    permission_classes = [IsAuthenticated]
    parser_classes = [MultiPartParser, FormParser, 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': '无权限管理轮播图'})

        deny = forbid_display_write_in_all_scope(request)
        if deny:
            return deny

        action = (request.data.get('action') or '').strip()
        club_id = resolve_club_id_from_request(request)
        page_key = normalize_page_key(request.data.get('page_key'), image_type=1)
        image_type = 2 if page_key == LUNBO_PAGE_DASHOU_CENTER else 1

        if action == 'delete':
            tupian_url = (request.data.get('tupian_url') or '').strip()
            if not tupian_url:
                return Response({'code': 400, 'msg': '图片URL不能为空'})
            row = Lunbo.query.filter(
                club_id=club_id, ImageURL=tupian_url, ImageType=image_type, page_key=page_key,
            ).first()
            if not row:
                return Response({'code': 404, 'msg': '轮播图不存在'})
            delete_from_oss(tupian_url)
            row.delete()
            return Response({'code': 0, 'msg': '删除成功'})

        if action == 'add':
            file_obj = request.FILES.get('file')
            if not file_obj:
                return Response({'code': 400, 'msg': '请上传图片'})
            ok, msg = validate_image(file_obj)
            if not ok:
                return Response({'code': 400, 'msg': msg})
            ext = os.path.splitext(file_obj.name)[1].lower() or '.jpg'
            random_str = ''.join(random.choices(string.ascii_lowercase + string.digits, k=6))
            oss_file_path = f"a_long/lunbo/{random_str}{ext}"
            if not upload_to_oss(file_obj, oss_file_path):
                return Response({'code': 500, 'msg': '图片上传失败'})
            Lunbo.query.create(
                club_id=club_id,
                page_key=page_key,
                ImageURL=oss_file_path,
                ImageType=image_type,
            )
            return Response({'code': 0, 'msg': '添加成功', 'data': {'tupian_url': oss_file_path}})

        return Response({'code': 400, 'msg': 'action 必须为 add 或 delete'})


class ClubGonggaoView(APIView):
    """公告读写 POST /jituan/houtai/gonggao"""
    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': '无权限管理公告'})

        notice_type = int(request.data.get('notice_type', 1) or 1)
        club_id = resolve_club_id_from_request(request)

        content = request.data.get('content')
        if content is None:
            return Response({
                'code': 0,
                'data': {
                    'content': get_gonggao_content(request, notice_type=notice_type),
                    'notice_type': notice_type,
                    **list_response_meta(request),
                },
            })

        deny = forbid_display_write_in_all_scope(request)
        if deny:
            return deny

        row, _ = Gonggao.query.get_or_create(
            club_id=club_id,
            NoticeType=notice_type,
            defaults={'Content': content},
        )
        row.Content = content
        row.save(update_fields=['Content', 'UpdateTime'])
        return Response({'code': 0, 'msg': '保存成功'})