main.js

// This is free and unencumbered software released into the public domain.
// See LICENSE for details

const {app, BrowserWindow, Menu, protocol, ipcMain} = require('electron');
const log = require('electron-log');
const {autoUpdater} = require("electron-updater");

//-------------------------------------------------------------------
// Logging
//
// THIS SECTION IS NOT REQUIRED
//
// This logging setup is not required for auto-updates to work,
// but it sure makes debugging easier :)
//-------------------------------------------------------------------
autoUpdater.logger = log;
autoUpdater.logger.transports.file.level = 'info';
log.info('App starting...');

//-------------------------------------------------------------------
// Define the menu
//
// THIS SECTION IS NOT REQUIRED
//-------------------------------------------------------------------
let template = []
if (process.platform === 'darwin') {
  // OS X
  const name = app.getName();
  template.unshift({
    label: name,
    submenu: [
      {
        label: 'About ' + name,
        role: 'about'
      },
      {
        label: 'Quit',
        accelerator: 'Command+Q',
        click() { app.quit(); }
      },
    ]
  })
}


//-------------------------------------------------------------------
// Open a window that displays the version
//
// THIS SECTION IS NOT REQUIRED
//
// This isn't required for auto-updates to work, but it's easier
// for the app to show a window than to have to click "About" to see
// that updates are working.
//-------------------------------------------------------------------
let mainWindow;

function sendStatusToWindow(text) {
  log.info(text);
  mainWindow.webContents.send('message', text);
}
function createDefaultWindow() {
  mainWindow = new BrowserWindow({
      //解决electron5.x 及以上版本中默认没法在electron渲染进程引入nodejs模块
      webPreferences: {
          nodeIntegration: true
      }
  });
  mainWindow.webContents.openDevTools();
  mainWindow.on('closed', () => {
    mainWindow = null;
  });
  mainWindow.loadURL(`file://${__dirname}/version.html#v${app.getVersion()}`);
  return mainWindow;
}

app.on('ready', function() {
  // Create the Menu
  const menu = Menu.buildFromTemplate(template);
  Menu.setApplicationMenu(menu);

  createDefaultWindow();
  //尝试更新
  updateHandle();

});
app.on('window-all-closed', () => {
  app.quit();
});

//
// CHOOSE one of the following options for Auto updates
//

//-------------------------------------------------------------------
// Auto updates - Option 1 - Simplest version
//
// This will immediately download an update, then install when the
// app quits.
//-------------------------------------------------------------------
app.on('ready', function()  {
  autoUpdater.checkForUpdatesAndNotify();
});

//-------------------------------------------------------------------
// Auto updates - Option 2 - More control
//
// For details about these events, see the Wiki:
// https://github.com/electron-userland/electron-builder/wiki/Auto-Update#events
//
// The app doesn't need to listen to any events except `update-downloaded`
//
// Uncomment any of the below events to listen for them.  Also,
// look in the previous section to see them being used.
//-------------------------------------------------------------------
// app.on('ready', function()  {
//   autoUpdater.checkForUpdates();
// });
// autoUpdater.on('checking-for-update', () => {
// })
// autoUpdater.on('update-available', (info) => {
// })
// autoUpdater.on('update-not-available', (info) => {
// })
// autoUpdater.on('error', (err) => {
// })
// autoUpdater.on('download-progress', (progressObj) => {
// })
// autoUpdater.on('update-downloaded', (info) => {
//   autoUpdater.quitAndInstall();
// })




//检测更新
let uploadUrl = "http://192.168.1.29:8080/download/history2/";
function updateHandle()
{
  let message = {
    error: '检查更新出错',
    checking: '正在检查更新……',
    updateAva: '检测到新版本，正在下载……',
    updateNotAva: '现在使用的就是最新版本，不用更新',
  };

  //避免自动下载强制更新
  autoUpdater.autoDownload = false;
  autoUpdater.setFeedURL(uploadUrl);
  autoUpdater.on('error', function (error) {
    sendUpdateMessage(message.error)
  });
  autoUpdater.on('checking-for-update', function () {
    console.log("checking-for-update");
    sendUpdateMessage(message.checking)
  });
  autoUpdater.on('update-available', function (info) {
    console.log("update-available");
    sendUpdateMessage(message.updateAva)
    //检测到新版本后监听渲染进程传来是否开始下载消息
    ipcMain.on("startDownload", ()=>{
        //手动下载更新
        autoUpdater.downloadUpdate().then(res => {
            sendUpdateMessage("下载完成");
        });
    })

    mainWindow.webContents.send("startDownload", info);
  });
  autoUpdater.on('update-not-available', function (info) {
    console.log("update-not-available");
    sendUpdateMessage(message.updateNotAva)
  });

  // 更新下载进度事件
  autoUpdater.on('download-progress', function (progressObj) {
    console.log("download-progress");
    mainWindow.webContents.send('downloadProgress', progressObj)
  })
  autoUpdater.on('update-downloaded', function (event, releaseNotes, releaseName, releaseDate, updateUrl, quitAndUpdate) {

    ipcMain.on('isUpdateNow', (e, arg) =>{
      console.log(arguments);
      console.log("开始更新isUpdateNow");
      //some code here to handle event
      autoUpdater.quitAndInstall();
    });
    console.log("update-downloaded");
    mainWindow.webContents.send('isUpdateNow')

  });

  ipcMain.on("checkForUpdate",()=>{
    console.log("checkForUpdate");
    //执行自动更新检查
    autoUpdater.checkForUpdates();
  })
}

// 通过main进程发送事件给renderer进程，提示更新信息
function sendUpdateMessage(text) {
  mainWindow.webContents.send('message', text)
}