const chalk = require('chalk') //命令行颜色
const ora = require('ora') // 加载流程动画
const spinner_style = require('./spinner_style') //加载动画样式
const shell = require('shelljs') // 执行shell命令
const node_ssh = require('node-ssh') // ssh连接服务器
const inquirer = require('inquirer') //命令行交互
const zipFile = require('compressing')// 压缩zip
const fs = require('fs') // nodejs内置文件模块
const path = require('path') // nodejs内置路径模块
const CONFIG = require('./config') // 配置

const SSH = new node_ssh();
let config; // 用于保存 inquirer 命令行交互后选择正式|测试版的配置

//logs
const defaultLog = log => console.log(chalk.blue(`---------------- ${log} ----------------`));
const errorLog = log => console.log(chalk.red(`---------------- ${log} ----------------`));
const successLog = log => console.log(chalk.green(`---------------- ${log} ----------------`));

//文件夹目录
// const distDir = path.resolve(__dirname, '../docs/__sapper__/export/smx-svelma'); //待打包
const distZipPath = path.resolve(__dirname, `./dist-bundle.tar.gz`); //打包后地址(dist-bundle.tar.gz是文件名,不需要更改, 主要在config中配置 PATH 即可)


//项目打包代码 npm run build 
const compileDist = async () => {
  const loading = ora( defaultLog('项目开始打包') ).start();
  loading.spinner = spinner_style.arrow4;
  shell.cd(path.resolve(__dirname, '../'));
  const res = await shell.exec('npm run build'); //执行shell 打包命令
  loading.stop();
  if(res.code === 0) {
    successLog('项目打包成功!');
  } else {
    errorLog('项目打包失败, 请重试!');
    process.exit(); //退出流程
  }
}

//压缩代码
const zipDist = async ()=>{
  const distDir = path.resolve(__dirname, '../'+config.OUTPUT_PATH); 
  defaultLog('项目开始压缩');
  try {
    await zipFile.tgz.compressDir(distDir, distZipPath)
    successLog('压缩成功!');
  } catch (error) {
    errorLog(error);
    errorLog('压缩失败, 退出程序!');
    process.exit(); //退出流程
  }
}

//连接服务器
const connectSSH = async ()=>{
  const loading = ora( defaultLog('正在连接服务器') ).start();
  loading.spinner = spinner_style.arrow4;
  try {

    const options = config.privateKey ? 
    {
      host: config.SERVER_PATH,
      username: config.SSH_USER,
      privateKey: config.PRIVATE_KEY, //秘钥登录(推荐) 方式一
      tryKeyboard : true
    }: {
      host: config.SERVER_PATH,
      username: config.SSH_USER,
      password: config.PASSWORD, // 密码登录 方式二
      tryKeyboard : true
    }

    await SSH.connect(options);
    successLog('SSH连接成功!'); 
  } catch (error) {
    errorLog(error);
    errorLog('SSH连接失败!');
    process.exit(); //退出流程
  }
  loading.stop();
}

//线上执行命令
/**
 * 
 * @param {String} command 命令操作 如 ls
 */
const runCommand = async (command)=> {
  const result = await SSH.exec(command, [], { cwd: config.PATH})
  // defaultLog(result);
}

//清空线上目标目录里的旧文件
const clearOldFile = async () =>{
  const commands = ['ls', 'rm -rf *'];
  await Promise.all(commands.map(async (it)=>{
    return await runCommand(it);
  }));
}

//传送zip文件到服务器
const uploadZipBySSH = async () =>{
  //连接ssh
  await connectSSH();
  //线上目标文件清空
  if(config.CLEAR_OLDFILES){
    await clearOldFile();
  }
 
  const loading = ora( defaultLog('准备上传文件') ).start();
  loading.spinner = spinner_style.arrow4;
  try {
    await SSH.putFiles([{ local: distZipPath, remote: config.PATH + '/dist-bundle.tar.gz' }]); //local 本地 ; remote 服务器 ;
    successLog('上传成功!'); 
    loading.text = '正在解压文件';
    await runCommand('tar -zxvf  ./dist-bundle.tar.gz'); //解压
    await runCommand(`rm -rf ${config.PATH}/dist-bundle.tar.gz`); //解压完删除线上压缩包
    //将目标目录改名
    if(config.RENAME){
      console.log(config.RENAME.OLD_NAME)
      await runCommand(`mv ${config.PATH}/${config.RENAME.OLD_NAME}  ${config.PATH}/${config.RENAME.NEW_NAME}`); 
    }
    
    SSH.dispose(); //断开连接
  } catch (error) {
    errorLog(error);
    errorLog('上传失败!');
    process.exit(); //退出流程
  }
  loading.stop();
}

// 删除本地上传后的打包文件
const deleteFile = function async() {
  delPath = distZipPath;
  try {
      /**
       * @des 判断文件或文件夹是否存在
       */
      if (fs.existsSync(delPath)) {
          fs.unlinkSync(delPath);
      } else {
          console.log('inexistence path：', delPath);
      }
  } catch (error) {
      console.log('删除本地打包文件失败', error);
  }
}



//------------发布程序---------------
const runUploadTask = async () => {
  console.log(chalk.yellow(`--------->  欢迎使用 Sm@rtMapX前端组 自动部署工具  <---------`));
  //打包
  // await compileDist();
  //压缩
  await zipDist();
  //连接服务器上传文件
  await uploadZipBySSH(); 

  //删除本地打包文件
  await deleteFile();

  successLog('大吉大利, 部署成功!'); 
  process.exit();
}

// 开始前的配置检查
/**
 * 
 * @param {Object} conf 配置对象
 */
const checkConfig = (conf) =>{
  const checkArr = Object.entries(conf);
  checkArr.map(it=>{
    const key = it[0];
    if(key === 'PATH' && conf[key] === '/') { //上传zip前会清空目标目录内所有文件
      errorLog('PATH 不能是服务器根目录!'); 
      process.exit(); //退出流程
    }
    if(!conf[key]) {
      errorLog(`配置项 ${key} 不能为空`); 
      process.exit(); //退出流程
    }
  })
}

// 执行交互后 启动发布程序
inquirer
  .prompt([{
    type: 'list',
    message: '选择您的部署环境',
    name: 'env',
    choices: [{
      name: '测试环境',
      value: 'development'
    },{
      name: '正式环境',
      value: 'production'
    }]
  }])
  .then(answers => {
    config = CONFIG[answers.env];
    if(!config.OUTPUT_PATH){
      config.OUTPUT_PATH = 'dist';
    }
    checkConfig(config); // 检查
    runUploadTask(); // 发布
  });