/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const fs = require('fs');
const path = require('path');

const exists = function(src, dst, callback) {
  if (src.match(/\/test$/)) {
    return;
  }
  fs.exists(dst, function(exists) {
    if(exists){
      callback(src, dst);
    } else{
      fs.mkdir(dst, function() {
          callback(src, dst);
      });
    }
  });
}

stat = fs.stat;
const copy = function(src, dst){
  fs.readdir(src, function(err, paths){
      if(err){
          throw err;
      }
      paths.forEach(function(_path){
          var _src = src + '/' + _path,
              _dst = dst + '/' + _path,
              readable, writable;
          stat(_src, function(err, st){
            if(err){
                throw err;
            }
            if(st.isFile()){
              const pathInfo = path.parse(_src);
              if (pathInfo.name == 'gulpfile' || pathInfo.ext != '.js') {
                return;
              }
              readable = fs.createReadStream(_src);
              writable = fs.createWriteStream(_dst);
              readable.pipe(writable);
            } else if(st.isDirectory()){
              exists(_src, _dst, copy);
            }
          });
      });
  });
};

function copyResource(src, dist) {
  exists(path.resolve(__dirname, src), dist, copy);
}

copyResource(path.resolve(__dirname, './plugin/templater'), process.argv[2] + '/templater');
copyResource(path.resolve(__dirname, './plugin/theme'), process.argv[2] + '/theme');
copyResource(path.resolve(__dirname, './plugin/codegen'), process.argv[2] + '/codegen');

module.exports = {
  copyResource
};