初始化

backend/services/artwork.js

@@ -0,0 +1,307 @@
+const axios = require('axios');
+const { stringify } = require('qs');
+
+class ArtworkService {
+  constructor(auth) {
+    this.auth = auth;
+    this.baseURL = 'https://app-api.pixiv.net';
+  }
+
+  /**
+   * 获取作品详情
+   */
+  async getArtworkDetail(artworkId, options = {}) {
+    try {
+      const { include_user = true, include_series = false } = options;
+      
+      const params = {
+        include_user,
+        include_series
+      };
+
+      const response = await this.makeRequest(
+        'GET',
+        `/v1/illust/detail?${stringify(params)}`,
+        { illust_id: artworkId }
+      );
+
+      return {
+        success: true,
+        data: response.illust
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 获取作品预览信息
+   */
+  async getArtworkPreview(artworkId) {
+    try {
+      const response = await this.makeRequest(
+        'GET',
+        '/v1/illust/detail',
+        { illust_id: artworkId }
+      );
+
+      const artwork = response.illust;
+      
+      // 构建预览信息
+      const preview = {
+        id: artwork.id,
+        title: artwork.title,
+        description: artwork.caption,
+        user: {
+          id: artwork.user.id,
+          name: artwork.user.name,
+          account: artwork.user.account
+        },
+        image_urls: artwork.image_urls,
+        tags: artwork.tags.map(tag => tag.name),
+        create_date: artwork.create_date,
+        update_date: artwork.update_date,
+        type: artwork.type,
+        width: artwork.width,
+        height: artwork.height,
+        page_count: artwork.page_count,
+        is_bookmarked: artwork.is_bookmarked,
+        total_bookmarks: artwork.total_bookmarks,
+        total_view: artwork.total_view,
+        is_muted: artwork.is_muted,
+        meta_single_page: artwork.meta_single_page,
+        meta_pages: artwork.meta_pages
+      };
+
+      return {
+        success: true,
+        data: preview
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 获取作品图片URL
+   */
+  async getArtworkImages(artworkId, size = 'medium') {
+    try {
+      const response = await this.makeRequest(
+        'GET',
+        '/v1/illust/detail',
+        { illust_id: artworkId }
+      );
+
+      const artwork = response.illust;
+      const images = [];
+
+      if (artwork.meta_single_page && artwork.meta_single_page.original_image_url) {
+        // 单页作品
+        images.push({
+          page: 1,
+          original: artwork.meta_single_page.original_image_url,
+          large: artwork.meta_single_page.large_image_url,
+          medium: artwork.image_urls.medium,
+          square_medium: artwork.image_urls.square_medium
+        });
+      } else if (artwork.meta_pages && artwork.meta_pages.length > 0) {
+        // 多页作品
+        artwork.meta_pages.forEach((page, index) => {
+          images.push({
+            page: index + 1,
+            original: page.image_urls.original,
+            large: page.image_urls.large,
+            medium: page.image_urls.medium,
+            square_medium: page.image_urls.square_medium
+          });
+        });
+      }
+
+      return {
+        success: true,
+        data: {
+          artwork_id: artworkId,
+          total_pages: artwork.page_count,
+          images: images,
+          selected_size: size
+        }
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 搜索作品
+   */
+  async searchArtworks(searchOptions) {
+    try {
+      const {
+        keyword,
+        type = 'all',
+        sort = 'date_desc',
+        duration = 'all',
+        offset = 0,
+        limit = 30
+      } = searchOptions;
+
+      const params = {
+        word: keyword,
+        search_target: type,
+        sort: sort,
+        duration: duration,
+        offset,
+        filter: 'for_ios'
+      };
+
+      const response = await this.makeRequest(
+        'GET',
+        `/v1/search/illust?${stringify(params)}`
+      );
+
+      return {
+        success: true,
+        data: {
+          artworks: response.illusts,
+          next_url: response.next_url,
+          search_span_limit: response.search_span_limit,
+          total: response.illusts.length
+        }
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 获取推荐作品
+   */
+  async getRecommendedArtworks(options = {}) {
+    try {
+      const {
+        offset = 0,
+        limit = 30,
+        include_ranking_illusts = true,
+        include_privacy_policy = false
+      } = options;
+
+      const params = {
+        offset,
+        include_ranking_illusts,
+        include_privacy_policy,
+        filter: 'for_ios'
+      };
+
+      const response = await this.makeRequest(
+        'GET',
+        `/v1/illust/recommended?${stringify(params)}`
+      );
+
+      return {
+        success: true,
+        data: {
+          artworks: response.illusts,
+          next_url: response.next_url,
+          ranking_illusts: response.ranking_illusts || []
+        }
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 获取排行榜作品
+   */
+  async getRankingArtworks(options = {}) {
+    try {
+      const {
+        mode = 'day',
+        filter = 'for_ios',
+        offset = 0
+      } = options;
+
+      const params = {
+        mode,
+        filter,
+        offset
+      };
+
+      const response = await this.makeRequest(
+        'GET',
+        `/v1/illust/ranking?${stringify(params)}`
+      );
+
+      return {
+        success: true,
+        data: {
+          artworks: response.illusts,
+          next_url: response.next_url,
+          mode,
+          date: response.date
+        }
+      };
+
+    } catch (error) {
+      return {
+        success: false,
+        error: error.message
+      };
+    }
+  }
+
+  /**
+   * 发送API请求
+   */
+  async makeRequest(method, endpoint, data = null) {
+    const headers = {
+      'Authorization': `Bearer ${this.auth.accessToken}`,
+      'Accept-Language': 'en-us',
+      'App-OS': 'android',
+      'App-OS-Version': '9.0',
+      'App-Version': '5.0.234',
+      'User-Agent': 'PixivAndroidApp/5.0.234 (Android 9.0; Pixel 3)'
+    };
+
+    const config = {
+      method,
+      url: `${this.baseURL}${endpoint}`,
+      headers,
+      timeout: 30000
+    };
+
+    if (data) {
+      if (method === 'GET') {
+        config.params = data;
+      } else {
+        config.data = data;
+      }
+    }
+
+    const response = await axios(config);
+    return response.data;
+  }
+}
+
+module.exports = ArtworkService;