/*
 * Copyright (C) Sapphirecode - All Rights Reserved
 * This file is part of snippeteer which is released under BSD-3-Clause.
 * See file 'LICENSE' for full license details.
 * Created by Timo Hocker <timo@scode.ovh>, January 2020
 */

/* eslint-disable no-sync */
/* eslint-disable no-console */

const fs = require ('fs-extra');
const path = require ('path');
const child_process = require ('child_process');

/**
 * copies the full template to a new folder named after arg[0]
 *
 * @param {string} folder folder to run in
 * @param {Array} args function arguments
 */
async function run (folder, args) {
  const snip_folder = path.join (folder, ...args);
  const template = path.join (__dirname, 'template');

  for (const f of fs.readdirSync (template))
    fs.copy (
      path.join (template, f),
      path.join (snip_folder, f),
      { filter: (src, dest) => !fs.existsSync (dest) }
    );

  const devdeps = [
    'babel-eslint',
    'vue-template-compiler',
    '@vue/cli-plugin-babel',
    '@vue/cli-plugin-eslint',
    '@vue/cli-service'
  ];
  const deps = [
    'core-js',
    'vue'
  ];

  child_process.execSync (
    `npm i --save ${deps.join (' ')} && npm i --save-dev ${devdeps.join (' ')}
    `,
    { cwd: snip_folder, stdio: 'inherit' }
  );

  const package_json = JSON.parse (
    await fs.readFile (path.join (snip_folder, 'package.json'), 'utf-8')
  );

  package_json.scripts.serve = 'vue-cli-service serve';
  package_json.scripts.build = 'vue-cli-service build';

  await fs.writeFile (
    path.join (snip_folder, 'package.json'),
    JSON.stringify (package_json, null, 2)
  );
}

/**
 * checks if the arguments meet the requirements
 *
 * @param {string} folder folder to run in
 * @returns {boolean} true if arguments match requirements
 */
function assert (folder) {
  const tests = [
    {
      f:      () => (typeof folder === 'string'),
      reason: 'cwd is not a folder (internal error)'
    },
    {
      f:      () => (fs.existsSync (folder)),
      reason: 'cwd does not exist (internal error)'
    }
  ];
  for (const test of tests)
    if (!test.f ()) {
      console.log (test.reason);
      return false;
    }

  return true;
}

module.exports = { run, assert };