initial: LAN IM desktop app (Electron 32 + Vue 3 + TS + SQLite)

src/preload/index.ts

@@ -0,0 +1,64 @@
+// preload: 把主进程能力通过 contextBridge 暴露给渲染进程
+import { contextBridge, ipcRenderer, webUtils } from 'electron'
+
+contextBridge.exposeInMainWorld('api', {
+  platform: process.platform,
+  versions: process.versions,
+
+  // self / 设备
+  self: () => ipcRenderer.invoke('self:info'),
+  listDevices: () => ipcRenderer.invoke('device:list'),
+  triggerScan: () => ipcRenderer.invoke('device:triggerScan'),
+
+  // 消息
+  listMessages: (peerId: string) => ipcRenderer.invoke('message:list', peerId),
+  sendText: (toDeviceId: string, content: string) => ipcRenderer.invoke('message:sendText', { toDeviceId, content }),
+  sendFile: (toDeviceId: string, localPath: string, opts?: { name?: string; mime?: string; asImage?: boolean; withProgress?: boolean }) =>
+    ipcRenderer.invoke('message:sendFile', { toDeviceId, localPath, ...(opts || {}) }),
+  sendBuffer: (toDeviceId: string, dataBase64: string, name: string, mime: string) =>
+    ipcRenderer.invoke('message:sendBuffer', { toDeviceId, dataBase64, name, mime }),
+  recall: (messageId: string) => ipcRenderer.invoke('message:recall', messageId),
+  retry: (messageId: string) => ipcRenderer.invoke('message:retry', messageId),
+  typing: (toDeviceId: string) => ipcRenderer.invoke('message:typing', toDeviceId),
+
+  // 未读
+  unreadList: () => ipcRenderer.invoke('unread:list'),
+  clearUnread: (deviceId: string) => ipcRenderer.invoke('unread:clear', deviceId),
+
+  // 设置
+  getSettings: () => ipcRenderer.invoke('settings:get'),
+  setSettings: (patch: any) => ipcRenderer.invoke('settings:set', patch),
+  chooseDownloadDir: () => ipcRenderer.invoke('settings:chooseDownloadDir'),
+
+  // 文件
+  openInFolder: (p: string) => ipcRenderer.invoke('file:openInFolder', p),
+  open: (p: string) => ipcRenderer.invoke('file:open', p),
+  readBase64: (p: string) => ipcRenderer.invoke('file:readBase64', p),
+  pickFile: (opts?: { image?: boolean }) => ipcRenderer.invoke('file:pick', opts),
+
+  // 拖拽文件 -> 真实磁盘路径 (Electron 32+ 必须用 webUtils.getPathForFile)
+  getPathForFile: (file: File): string => {
+    try { return webUtils.getPathForFile(file) || '' } catch { return '' }
+  },
+
+  // 应用
+  hide: () => ipcRenderer.invoke('app:hide'),
+  appVersion: () => ipcRenderer.invoke('app:version'),
+
+  // 开机自启
+  getAutoStart: () => ipcRenderer.invoke('autostart:get'),
+  setAutoStart: (enabled: boolean) => ipcRenderer.invoke('autostart:set', enabled),
+
+  // 网络接口 (只读)
+  listInterfaces: () => ipcRenderer.invoke('network:listInterfaces'),
+
+  // 事件订阅: 主进程 webContents.send('xxx', payload) 会在此处派发
+  on(channel: string, cb: (payload: any) => void) {
+    const listener = (_e: any, payload: any) => cb(payload)
+    ipcRenderer.on(channel, listener)
+    return () => ipcRenderer.removeListener(channel, listener)
+  },
+
+  // 离线消息: 启动后让主进程把 pending 重新尝试一遍
+  flushPending: () => ipcRenderer.invoke('message:flushPending'),
+})