#!/usr/bin/env node

const inquirer = require('inquirer');
const chalk = require('chalk');
const exec = require('child_process').exec;

const templateMap = require(`${__dirname}/../template`);

const templateOptions = Object.keys(templateMap).reduce((list, key) => {
  list.push({
    name: `${templateMap[key].name} (${key})`,
    value: key,
    short: templateMap[key].name,
  });
  return list;
}, []);

const questions = [
  {
    name: 'template',
    type: 'list',
    message: '请选择使用的模板？',
    choices: templateOptions,
  },
  {
    name: 'projectName',
    type: 'input',
    message: '请输入系统名称',
    validate(val) {
      if (val === '') return '请输入系统名称';
      return true;
    },
  },
];

function initAsk() {
  inquirer.prompt(questions).then((answers) => {
    const result = {
      template: answers.template,
      projectName: answers.projectName,
    };
    const template = templateMap[result.template];

    initProject(result.projectName, template);
  });
}

function initProject(projectName, template) {
  console.log(chalk.white('\n 开始下载模板... \n'));

  exec(`git clone -b ${template.branch} --depth=1 ${template.repo} ${projectName}`, (err) => {
    if (err) {
      console.log(chalk.red(`模板下载失败. ${err}`));
      process.exit(1);
    } else {
      try {
        commitWork(projectName, (err) => {
          if (err) {
            console.log(chalk.red(err));
          } else {
            console.log(chalk.green('\n ✅下载完成!'));
            console.log('\n 快速开始');
            console.log(`\n   cd ${projectName}`);
            console.log('\n   npm install');
            console.log('\n   npm start\n');
            process.exit(1);
          }
        });
      } catch (err) {
        console.log('项目配置生成失败', chalk.red(err));
      }
    }
  });
}

function commitWork(projectName, callback) {
  exec(
    `
    cd ${projectName}
    rm -rf .git
    git init
    git add .
    git commit -m 'init ${projectName}'
  `,
    callback,
  );
}

initAsk();