photovoltaic-pc/main.js

/*
 * @Author: 李皓 hao_li_work@163.com
 * @Date: 2026-07-28 15:22:20
 * @LastEditors: 李皓 hao_li_work@163.com
 * @LastEditTime: 2026-07-28 16:59:56
 * @FilePath: \pc\main.js
 * @Description: 
 * @Version: 1.0.0
 */
const { app, BrowserWindow, ipcMain } = require('electron')
const path = require('path')
const fs = require('fs')
const { WitMotionSensor } = require('./sensor')

// 缓存文件路径（存储在应用用户数据目录下）
const cacheDir = app.getPath('userData')
const cacheFile = path.join(cacheDir, 'app-cache.json')

// 确保缓存目录存在
function ensureCacheDir() {
  try {
    if (!fs.existsSync(cacheDir)) {
      fs.mkdirSync(cacheDir, { recursive: true })
    }
  } catch { /* 忽略 */ }
}

// 读取缓存文件
function readCache() {
  try {
    if (fs.existsSync(cacheFile)) {
      const raw = fs.readFileSync(cacheFile, 'utf-8')
      return JSON.parse(raw)
    }
  } catch { /* 忽略解析错误 */ }
  return {}
}

// 写入缓存文件
function writeCache(data) {
  try {
    ensureCacheDir()
    fs.writeFileSync(cacheFile, JSON.stringify(data, null, 2), 'utf-8')
  } catch { /* 忽略写入错误 */ }
}

let sensor = null

const createWindow = () => {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
      sandbox: false
    }
  })

  win.loadFile('./dist/index.html')

  // 窗口创建后连接传感器
  sensor = new WitMotionSensor({
    onData: (data) => {
      if (!win.isDestroyed()) {
        win.webContents.send('sensor-data', data)
      }
    },
    onLog: (level, msg) => {
      console.log(`[sensor] ${msg}`)
      // 也发送到渲染进程，方便静态页面查看日志
      if (win && !win.isDestroyed()) {
        try { win.webContents.send('sensor-log', { level, msg }) } catch {}
      }
    }
  })
  sensor.connect()
}

app.whenReady().then(() => {
  // 注册 IPC 处理器：获取缓存
  ipcMain.handle('get-cache', (_event, key) => {
    const cache = readCache()
    return key ? cache[key] : cache
  })

  // 注册 IPC 处理器：设置缓存
  ipcMain.handle('set-cache', (_event, key, value) => {
    const cache = readCache()
    cache[key] = value
    writeCache(cache)
    return true
  })

  createWindow()
})