/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
'use strict'

/**

AUCTION:
taskQueue
Clipboard.setString()  NOW not works, facing to user-act lose of taskQueue.

works in Chrome Firefox Opera. but not in Safari.
@see https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand#Browser_compatibility

Clipboard.getString() unimplemented. There is no easy way to do paste from clipboard to js variable.

So look out your app behavior, when downgrade to html5 render.
Any idea is welcome.
**/

const WEEX_CLIPBOARD_ID = '__weex_clipboard_id__'

const clipboard = {

  getString: function (callbackId) {
    // not supported in html5
    console.log('clipboard.getString() is not supported now.')
  },

  setString: function (text) {
    // not support safari
    if (typeof text === 'string' && text !== '' && document.execCommand) {
      const tempInput = element()
      tempInput.value = text

      tempInput.select()
      document.execCommand('copy')
      // var out = document.execCommand('copy');
      // console.log("execCommand out is " + out);
      tempInput.value = ''
      tempInput.blur()
    }
    else {
      console.log('only support string input now')
    }
  }

}

function element () {
  let tempInput = document.getElementById(WEEX_CLIPBOARD_ID)
  if (!tempInput) {
    tempInput = document.createElement('input')
    tempInput.setAttribute('id', WEEX_CLIPBOARD_ID)
    tempInput.style.cssText = 'height:1px;width:1px;border:none;'
    // tempInput.style.cssText = "height:40px;width:300px;border:solid;"
    document.body.appendChild(tempInput)
  }
  return tempInput
}

const meta = {
  clipboard: [{
    name: 'getString',
    args: ['function']
  }, {
    name: 'setString',
    args: ['string']
  }]
}

export default {
  init: function (Weex) {
    Weex.registerApiModule('clipboard', clipboard, meta)
  }
}