<template>
  <div>
    <div role="alert" class="ui warning message" v-if="!anonymousCanListen">
      <p>
        <strong>
          <translate translate-context="Content/Embed/Message">Sharing will not work because this pod doesn't allow anonymous users to access content.</translate>
        </strong>
      </p>
      <p>
        <translate translate-context="Content/Embed/Message">Please contact your admins and ask them to update the corresponding setting.</translate>
      </p>
    </div>
    <div class="ui form">
      <div class="two fields">
        <div class="field">
          <div class="field">
            <label for="embed-width"><translate translate-context="Popup/Embed/Input.Label">Widget width</translate></label>
            <p><translate translate-context="Popup/Embed/Paragraph">Leave empty for a responsive widget</translate></p>
            <input id="embed-width" type="number" v-model.number="width" min="0" step="10" />
          </div>
          <template v-if="type != 'track'">
            <br>
            <div class="field">
              <label for="embed-height"><translate translate-context="Popup/Embed/Input.Label">Widget height</translate></label>
              <input id="embed-height" type="number" v-model="height" :min="minHeight" max="1000" step="10" />
            </div>
          </template>
        </div>
        <div class="field">
          <button @click="copy" class="ui right accent labeled icon floated button"><i class="copy icon"></i><translate translate-context="*/*/Button.Label/Short, Verb">Copy</translate></button>
          <label for="embed-width"><translate translate-context="Popup/Embed/Input.Label/Noun">Embed code</translate></label>
          <p><translate translate-context="Popup/Embed/Paragraph">Copy/paste this code in your website HTML</translate></p>
          <textarea ref="textarea" :value="embedCode" rows="5" readonly>
          </textarea>
          <div class="ui right">
          <p class="message" v-if=copied><translate translate-context="Content/*/Paragraph">Text copied to clipboard!</translate></p>
          </div>
        </div>
      </div>
    </div>
    <div class="preview">
      <h3>
        <a :href="iframeSrc" target="_blank">
          <translate translate-context="Popup/Embed/Title/Noun">Preview</translate>
        </a>
      </h3>
      <iframe :width="frameWidth" :height="height" scrolling="no" frameborder="no" :src="iframeSrc"></iframe>
    </div>
  </div>
</template>

<script>

import { mapState } from "vuex"
import _ from '@/lodash'

export default {
  props: ['type', 'id'],
  data () {
    let d = {
      width: null,
      height: 150,
      minHeight: 100,
      copied: false
    }
    if (this.type === 'album' || this.type === 'artist' || this.type === 'playlist') {
      d.height = 330
      d.minHeight = 250
    }
    return d
  },
  computed: {
    ...mapState({
      nodeinfo: state => state.instance.nodeinfo,
    }),
    anonymousCanListen () {
      return _.get(this.nodeinfo, 'metadata.library.anonymousCanListen', false)
    },
    iframeSrc () {
      let base = process.env.BASE_URL
      if (base.startsWith('/')) {
        // include hostname/protocol too so that the iframe link is absolute
        base = `${window.location.protocol}//${window.location.host}${base}`
      }
      let instanceUrl = this.$store.state.instance.instanceUrl
      let b = ''
      if (!window.location.href.startsWith(instanceUrl)) {
        // the frontend is running on a separate domain, so we need to provide
        // the b= parameter in the iframe
        b = `&b=${instanceUrl}`
      }
      return `${base}embed.html?&type=${this.type}&id=${this.id}${b}`
    },
    frameWidth () {
      if (this.width) {
        return this.width
      }
      return '100%'
    },
    embedCode () {
      let src = this.iframeSrc.replace(/&/g, '&amp;')
      return `<iframe width="${this.frameWidth}" height="${this.height}" scrolling="no" frameborder="no" src="${src}"></iframe>`
    }
  },
  methods: {
    copy () {
      this.$refs.textarea.select()
      document.execCommand("Copy")
      let self = this
      self.copied = true
      this.timeout = setTimeout(() => {
        self.copied = false
      }, 5000)
    }
  }
}
</script>
