feat: 实现修改管理员密码的功能

packages/backend/src/services/settings.service.ts

@@ -0,0 +1,50 @@
+import { settingsRepository, Setting } from '../repositories/settings.repository';
+
+export const settingsService = {
+  /**
+   * 获取所有设置项
+   * @returns 返回包含所有设置项的数组
+   */
+  async getAllSettings(): Promise<Record<string, string>> {
+    const settingsArray = await settingsRepository.getAllSettings();
+    const settingsRecord: Record<string, string> = {};
+    settingsArray.forEach(setting => {
+      settingsRecord[setting.key] = setting.value;
+    });
+    return settingsRecord;
+  },
+
+  /**
+   * 获取单个设置项的值
+   * @param key 设置项的键
+   * @returns 返回设置项的值，如果不存在则返回 null
+   */
+  async getSetting(key: string): Promise<string | null> {
+    return settingsRepository.getSetting(key);
+  },
+
+  /**
+   * 设置单个设置项的值 (如果键已存在则更新)
+   * @param key 设置项的键
+   * @param value 设置项的值
+   */
+  async setSetting(key: string, value: string): Promise<void> {
+    await settingsRepository.setSetting(key, value);
+  },
+
+  /**
+   * 批量设置多个设置项的值
+   * @param settings 包含多个设置项键值对的对象
+   */
+  async setMultipleSettings(settings: Record<string, string>): Promise<void> {
+    await settingsRepository.setMultipleSettings(settings);
+  },
+
+  /**
+   * 删除单个设置项
+   * @param key 要删除的设置项的键
+   */
+  async deleteSetting(key: string): Promise<void> {
+    await settingsRepository.deleteSetting(key);
+  },
+};