更新下载进度，修复不能重新下载的问题

2025-08-23 12:03:40 +08:00
parent 8d4e479ee1
commit b0179139cc
18 changed files with 1986 additions and 633 deletions
@@ -0,0 +1,158 @@
+const fs = require('fs-extra');
+const path = require('path');
+
+/**
+ * 历史记录管理器 - 负责下载历史的管理
+ */
+class HistoryManager {
+  constructor(dataPath) {
+    this.dataPath = dataPath;
+    this.historyFile = path.join(dataPath, 'download_history.json');
+    this.history = [];
+    this.initialized = false;
+  }
+
+  /**
+   * 初始化历史记录管理器
+   */
+  async init() {
+    try {
+      await fs.ensureDir(this.dataPath);
+      await this.loadHistory();
+      this.initialized = true;
+      console.log('历史记录管理器初始化完成');
+    } catch (error) {
+      console.error('历史记录管理器初始化失败:', error);
+      this.initialized = false;
+    }
+  }
+
+  /**
+   * 加载下载历史
+   */
+  async loadHistory() {
+    try {
+      if (await fs.pathExists(this.historyFile)) {
+        this.history = await fs.readJson(this.historyFile);
+      }
+    } catch (error) {
+      console.error('加载下载历史失败:', error);
+      this.history = [];
+    }
+  }
+
+  /**
+   * 保存下载历史
+   */
+  async saveHistory() {
+    try {
+      await fs.writeJson(this.historyFile, this.history, { spaces: 2 });
+    } catch (error) {
+      console.error('保存下载历史失败:', error);
+    }
+  }
+
+  /**
+   * 添加历史记录
+   */
+  async addHistoryItem(item) {
+    this.history.unshift(item);
+    await this.saveHistory();
+  }
+
+  /**
+   * 获取下载历史
+   */
+  getDownloadHistory(offset = 0, limit = 50) {
+    const start = offset;
+    const end = offset + limit;
+    const history = this.history.slice(start, end);
+    
+    return {
+      history,
+      total: this.history.length,
+      offset,
+      limit
+    };
+  }
+
+  /**
+   * 根据作品ID查找历史记录
+   */
+  findHistoryByArtworkId(artworkId) {
+    return this.history.find(item => item.artwork_id === artworkId);
+  }
+
+  /**
+   * 根据作者ID查找历史记录
+   */
+  findHistoryByArtistId(artistId) {
+    return this.history.filter(item => item.artist_id === artistId);
+  }
+
+  /**
+   * 删除历史记录
+   */
+  async removeHistoryItem(artworkId) {
+    const index = this.history.findIndex(item => item.artwork_id === artworkId);
+    if (index > -1) {
+      this.history.splice(index, 1);
+      await this.saveHistory();
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * 清理历史记录
+   */
+  async clearHistory() {
+    this.history = [];
+    await this.saveHistory();
+  }
+
+  /**
+   * 获取历史统计信息
+   */
+  getHistoryStats() {
+    const stats = {
+      total: this.history.length,
+      completed: 0,
+      failed: 0,
+      partial: 0,
+      totalFiles: 0,
+      totalSize: 0
+    };
+
+    for (const item of this.history) {
+      if (stats.hasOwnProperty(item.status)) {
+        stats[item.status]++;
+      }
+      if (item.completed_files) {
+        stats.totalFiles += item.completed_files;
+      }
+    }
+
+    return stats;
+  }
+
+  /**
+   * 获取最近下载的作品
+   */
+  getRecentDownloads(limit = 10) {
+    return this.history.slice(0, limit);
+  }
+
+  /**
+   * 搜索历史记录
+   */
+  searchHistory(query) {
+    const lowerQuery = query.toLowerCase();
+    return this.history.filter(item => 
+      (item.artwork_title && item.artwork_title.toLowerCase().includes(lowerQuery)) ||
+      (item.artist_name && item.artist_name.toLowerCase().includes(lowerQuery))
+    );
+  }
+}
+
+module.exports = HistoryManager;