| 1 | /** |
| 2 | * 小红书首页列表功能模块 |
| 3 | */ |
| 4 | |
| 5 | import type { HomeFeedItem, HomeFeedListParams, HomeFeedListResult } from '../types' |
| 6 | import type { XhsHomeFeedItem, XhsHomeFeedResponse } from './types' |
| 7 | |
| 8 | /** |
| 9 | * 首页列表游标管理器 |
| 10 | */ |
| 11 | class HomeFeedCursorManager { |
| 12 | /** |
| 13 | * 游标缓存，用于分页转换 |
| 14 | * key: 页码, value: cursor_score |
| 15 | */ |
| 16 | private cursorMap = new Map<number, string>() |
| 17 | |
| 18 | /** |
| 19 | * 当前已请求的最大页码 |
| 20 | */ |
| 21 | private maxRequestedPage = 0 |
| 22 | |
| 23 | /** |
| 24 | * 重置游标缓存 |
| 25 | */ |
| 26 | reset(): void { |
| 27 | this.cursorMap.clear() |
| 28 | this.maxRequestedPage = 0 |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * 获取当前页的游标 |
| 33 | */ |
| 34 | getCursor(page: number): string { |
| 35 | return page === 1 ? '' : this.cursorMap.get(page) || '' |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * 存储下一页的游标 |
| 40 | */ |
| 41 | setCursor(currentPage: number, cursorScore: string): void { |
| 42 | this.cursorMap.set(currentPage + 1, cursorScore) |
| 43 | this.maxRequestedPage = currentPage |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * 获取最大已请求页码 |
| 48 | */ |
| 49 | getMaxRequestedPage(): number { |
| 50 | return this.maxRequestedPage |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * 游标管理器实例 |
| 56 | */ |
| 57 | export const homeFeedCursor = new HomeFeedCursorManager() |
| 58 | |
| 59 | /** |
| 60 | * 构建首页列表请求数据 |
| 61 | */ |
| 62 | export function buildHomeFeedRequestData(params: HomeFeedListParams, cursorScore: string): object { |
| 63 | const { page, size } = params |
| 64 | |
| 65 | return { |
| 66 | cursor_score: cursorScore, |
| 67 | num: size, |
| 68 | refresh_type: page === 1 ? 1 : 3, |
| 69 | note_index: (page - 1) * size, |
| 70 | unread_begin_note_id: '', |
| 71 | unread_end_note_id: '', |
| 72 | unread_note_count: 0, |
| 73 | category: 'homefeed_recommend', |
| 74 | search_key: '', |
| 75 | need_num: Math.min(size, 10), |
| 76 | image_formats: ['jpg', 'webp', 'avif'], |
| 77 | need_filter_image: false, |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * 构建小红书作者主页链接 |
| 83 | * @param userId 用户ID |
| 84 | * @param xsecToken 用户的 xsec_token |
| 85 | */ |
| 86 | function buildAuthorUrl(userId: string, xsecToken: string): string { |
| 87 | const params = new URLSearchParams({ |
| 88 | xsec_token: xsecToken, |
| 89 | xsec_source: 'pc_feed', |
| 90 | }) |
| 91 | return `https://www.xiaohongshu.com/user/profile/${userId}?${params.toString()}` |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * 将小红书原始数据转换为统一格式 |
| 96 | * 注：list不包含收藏数和话题，这些在详情中获取 |
| 97 | */ |
| 98 | export function transformToHomeFeedItem(item: XhsHomeFeedItem): HomeFeedItem { |
| 99 | const { note_card } = item |
| 100 | |
| 101 | // 构建作者主页链接 |
| 102 | const authorUrl = buildAuthorUrl(note_card.user?.user_id || '', note_card.user?.xsec_token || '') |
| 103 | |
| 104 | return { |
| 105 | workId: item.id, |
| 106 | thumbnail: note_card.cover?.url_default || note_card.cover?.url_pre || '', |
| 107 | title: note_card.display_title || '', |
| 108 | authorAvatar: note_card.user?.avatar || '', |
| 109 | authorName: note_card.user?.nickname || note_card.user?.nick_name || '', |
| 110 | authorId: note_card.user?.user_id || '', |
| 111 | authorUrl, |
| 112 | likeCount: note_card.interact_info?.liked_count || '0', |
| 113 | isFollowed: note_card.interact_info?.followed ?? false, |
| 114 | isLiked: note_card.interact_info?.liked ?? false, |
| 115 | isVideo: note_card.type === 'video', |
| 116 | videoDuration: note_card.video?.capa?.duration, |
| 117 | origin: item, |
| 118 | thumbnailWidth: note_card.cover.width, |
| 119 | thumbnailHeight: note_card.cover.height, |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * 获取首页作品列表 |
| 125 | * 使用游标分页转换为 page/size 分页 |
| 126 | */ |
| 127 | export async function getHomeFeedList(params: HomeFeedListParams): Promise<HomeFeedListResult> { |
| 128 | // 检查插件 |
| 129 | if (!window.AIToEarnPlugin) { |
| 130 | return { |
| 131 | success: false, |
| 132 | message: '插件未安装或未就绪', |
| 133 | items: [], |
| 134 | hasMore: false, |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | const { page, size } = params |
| 139 | |
| 140 | // 页码从1开始 |
| 141 | if (page < 1) { |
| 142 | return { |
| 143 | success: false, |
| 144 | message: '页码必须大于0', |
| 145 | items: [], |
| 146 | hasMore: false, |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | // 如果请求的页码超过已请求的最大页码+1，需要顺序请求 |
| 151 | // 游标分页只能顺序获取，不支持跳页 |
| 152 | const maxPage = homeFeedCursor.getMaxRequestedPage() |
| 153 | if (page > maxPage + 1) { |
| 154 | return { |
| 155 | success: false, |
| 156 | message: `不支持跳页，请先请求第 ${maxPage + 1} 页`, |
| 157 | items: [], |
| 158 | hasMore: false, |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | // 如果是第1页，重置游标 |
| 163 | if (page === 1) { |
| 164 | homeFeedCursor.reset() |
| 165 | } |
| 166 | |
| 167 | // 获取当前页的游标 |
| 168 | const cursorScore = homeFeedCursor.getCursor(page) |
| 169 | |
| 170 | // 构建请求数据 |
| 171 | const requestData = buildHomeFeedRequestData(params, cursorScore) |
| 172 | |
| 173 | try { |
| 174 | const response = await window.AIToEarnPlugin.xhsRequest<XhsHomeFeedResponse>({ |
| 175 | path: '/api/sns/web/v1/homefeed', |
| 176 | method: 'POST', |
| 177 | data: requestData, |
| 178 | }) |
| 179 | |
| 180 | if (!response.success || !response.data) { |
| 181 | return { |
| 182 | success: false, |
| 183 | message: response.msg || '获取首页列表失败', |
| 184 | items: [], |
| 185 | hasMore: false, |
| 186 | rawData: response, |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | // 存储下一页的游标 |
| 191 | if (response.data.cursor_score) { |
| 192 | homeFeedCursor.setCursor(page, response.data.cursor_score) |
| 193 | } |
| 194 | |
| 195 | // 转换数据格式 |
| 196 | const items: HomeFeedItem[] = response.data.items |
| 197 | .filter(item => item.model_type === 'note' && item.note_card) |
| 198 | .map(item => transformToHomeFeedItem(item)) |
| 199 | |
| 200 | return { |
| 201 | success: true, |
| 202 | items, |
| 203 | hasMore: items.length >= size && !!response.data.cursor_score, |
| 204 | rawData: response, |
| 205 | } |
| 206 | } |
| 207 | catch (error) { |
| 208 | return { |
| 209 | success: false, |
| 210 | message: error instanceof Error ? error.message : '请求失败', |
| 211 | items: [], |
| 212 | hasMore: false, |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 |