import { ipcRenderer, contextBridge } from 'electron';
import { BIDIRECTIONAL } from '../shared/constants/ipc-channels';

// --------- Expose some API to the Renderer process ---------
contextBridge.exposeInMainWorld('ipcRenderer', {
   on(...args: Parameters<typeof ipcRenderer.on>) {
      const [channel, listener] = args;
      return ipcRenderer.on(channel, (event, ...args) => listener(event, ...args));
   },
   off(...args: Parameters<typeof ipcRenderer.off>) {
      const [channel, ...omit] = args;
      return ipcRenderer.off(channel, ...omit);
   },
   send(...args: Parameters<typeof ipcRenderer.send>) {
      const [channel, ...omit] = args;
      return ipcRenderer.send(channel, ...omit);
   },
   invoke(...args: Parameters<typeof ipcRenderer.invoke>) {
      const [channel, ...omit] = args;
      return ipcRenderer.invoke(channel, ...omit);
   },
});

// --------- 安全加密 API（基于 Electron safeStorage）---------
contextBridge.exposeInMainWorld('safeStorage', {
   /**
    * 加密明文字符串
    * @param plaintext - 待加密的明文
    * @returns Base64 编码的密文，失败返回 null
    */
   async encrypt(plaintext: string): Promise<string | null> {
      const result = await ipcRenderer.invoke(BIDIRECTIONAL.SAFESTORAGE_ENCRYPT, plaintext);
      return result?.success ? result.data : null;
   },

   /**
    * 解密 Base64 密文
    * @param encryptedBase64 - Base64 编码的密文
    * @returns 解密后的明文，失败返回 null
    */
   async decrypt(encryptedBase64: string): Promise<string | null> {
      const result = await ipcRenderer.invoke(BIDIRECTIONAL.SAFESTORAGE_DECRYPT, encryptedBase64);
      return result?.success ? result.data : null;
   },
});

// --------- 本地存储文件 API（主进程 fs 桥接）---------
contextBridge.exposeInMainWorld('fileStorage', {
   /** 获取 heixiu-data 根目录路径 */
   getDataDir(): Promise<string | null> {
      return ipcRenderer.invoke(BIDIRECTIONAL.GET_DATA_DIR)
         .then((r: { success: boolean; data: string }) => r?.success ? r.data : null);
   },
   /** 写入文件（Base64 → 磁盘），返回写入的绝对路径 */
   writeFile(relativePath: string, data: string, encoding?: 'base64' | 'utf8'): Promise<string | null> {
      return ipcRenderer.invoke(BIDIRECTIONAL.FILE_WRITE, { relativePath, data, encoding })
         .then((r: { success: boolean; data: string }) => r?.success ? r.data : null);
   },
   /** 读取文件（磁盘 → Base64） */
   readFile(relativePath: string): Promise<string | null> {
      return ipcRenderer.invoke(BIDIRECTIONAL.FILE_READ, { relativePath })
         .then((r: { success: boolean; data: string }) => r?.success ? r.data : null);
   },
   /** 删除文件 */
   deleteFile(relativePath: string): Promise<boolean> {
      return ipcRenderer.invoke(BIDIRECTIONAL.FILE_DELETE, { relativePath })
         .then((r: { success: boolean }) => r?.success ?? false);
   },
   /** 递归创建目录 */
   makeDir(relativePath: string): Promise<string | null> {
      return ipcRenderer.invoke(BIDIRECTIONAL.MAKE_DIR, { relativePath })
         .then((r: { success: boolean; data: string }) => r?.success ? r.data : null);
   },
   /** 在文件管理器中显示文件（绝对路径） */
   showItemInFolder(filePath: string): Promise<boolean> {
      return ipcRenderer.invoke(BIDIRECTIONAL.SHOW_ITEM_IN_FOLDER, { filePath })
         .then((r: { success: boolean }) => r?.success ?? false);
   },
   /** 获取文件大小（字节） */
   fileSize(relativePath: string): Promise<number | null> {
      return ipcRenderer.invoke(BIDIRECTIONAL.FILE_SIZE, { relativePath })
         .then((r: { success: boolean; data: number }) => r?.success ? r.data : null);
   },
   /** 检查文件/目录是否存在 */
   fileExists(relativePath: string): Promise<boolean> {
      return ipcRenderer.invoke(BIDIRECTIONAL.FILE_EXISTS, { relativePath })
         .then((r: { success: boolean; data: boolean }) => r?.success ? r.data : false);
   },
});