<script>
import { GlTooltipDirective, GlLink, GlButton, GlCollapse, GlIcon, GlBadge } from '@gitlab/ui';
import { difference, get } from 'lodash';
import Icon from '~/vue_shared/components/icon.vue';
import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
import { ASSET_LINK_TYPE } from '../constants';
import { __, s__, sprintf } from '~/locale';

export default {
  name: 'ReleaseBlockAssets',
  components: {
    GlLink,
    GlButton,
    GlCollapse,
    GlIcon,
    Icon,
    GlBadge,
  },
  directives: {
    GlTooltip: GlTooltipDirective,
  },
  mixins: [glFeatureFlagsMixin()],
  props: {
    assets: {
      type: Object,
      required: true,
    },
  },
  data() {
    return {
      isAssetsExpanded: true,
    };
  },
  computed: {
    hasAssets() {
      return Boolean(this.assets.count);
    },
    imageLinks() {
      return this.linksForType(ASSET_LINK_TYPE.IMAGE);
    },
    packageLinks() {
      return this.linksForType(ASSET_LINK_TYPE.PACKAGE);
    },
    runbookLinks() {
      return this.linksForType(ASSET_LINK_TYPE.RUNBOOK);
    },
    otherLinks() {
      return difference(this.assets.links, [
        ...this.imageLinks,
        ...this.packageLinks,
        ...this.runbookLinks,
      ]);
    },
    sections() {
      return [
        {
          links: get(this.assets, 'sources', []).map(s => ({
            url: s.url,
            name: sprintf(__('Source code (%{fileExtension})'), { fileExtension: s.format }),
          })),
          iconName: 'doc-code',
        },
        {
          title: s__('ReleaseAssetLinkType|Images'),
          links: this.imageLinks,
          iconName: 'container-image',
        },
        {
          title: s__('ReleaseAssetLinkType|Packages'),
          links: this.packageLinks,
          iconName: 'package',
        },
        {
          title: s__('ReleaseAssetLinkType|Runbooks'),
          links: this.runbookLinks,
          iconName: 'book',
        },
        {
          title: s__('ReleaseAssetLinkType|Other'),
          links: this.otherLinks,
          iconName: 'link',
        },
      ].filter(section => section.links.length > 0);
    },
  },
  methods: {
    toggleAssetsExpansion() {
      this.isAssetsExpanded = !this.isAssetsExpanded;
    },
    linksForType(type) {
      return this.assets.links.filter(l => l.linkType === type);
    },
  },
  externalLinkTooltipText: __('This link points to external content'),
};
</script>

<template>
  <div class="card-text gl-mt-3">
    <template v-if="glFeatures.releaseAssetLinkType">
      <gl-button
        data-testid="accordion-button"
        variant="link"
        class="gl-font-weight-bold"
        @click="toggleAssetsExpansion"
      >
        <gl-icon
          name="chevron-right"
          class="gl-transition-medium"
          :class="{ 'gl-rotate-90': isAssetsExpanded }"
        />
        {{ __('Assets') }}
        <gl-badge size="sm" variant="neutral" class="gl-display-inline-block">{{
          assets.count
        }}</gl-badge>
      </gl-button>
      <gl-collapse v-model="isAssetsExpanded">
        <div class="gl-pl-6 gl-pt-3 js-assets-list">
          <template v-for="(section, index) in sections">
            <h5 v-if="section.title" :key="`section-header-${index}`" class="gl-mb-2">
              {{ section.title }}
            </h5>
            <ul :key="`section-body-${index}`" class="list-unstyled gl-m-0">
              <li v-for="link in section.links" :key="link.url">
                <gl-link
                  :href="link.directAssetUrl || link.url"
                  class="gl-display-flex gl-align-items-center gl-line-height-24"
                >
                  <gl-icon
                    :name="section.iconName"
                    class="gl-mr-2 gl-flex-shrink-0 gl-flex-grow-0"
                  />
                  {{ link.name }}
                  <gl-icon
                    v-if="link.external"
                    v-gl-tooltip
                    name="external-link"
                    :aria-label="$options.externalLinkTooltipText"
                    :title="$options.externalLinkTooltipText"
                    data-testid="external-link-indicator"
                    class="gl-ml-2 gl-flex-shrink-0 gl-flex-grow-0 gl-text-gray-400"
                  />
                </gl-link>
              </li>
            </ul>
          </template>
        </div>
      </gl-collapse>
    </template>

    <template v-else>
      <b>
        {{ __('Assets') }}
        <span class="js-assets-count badge badge-pill">{{ assets.count }}</span>
      </b>

      <ul v-if="assets.links.length" class="pl-0 mb-0 gl-mt-3 list-unstyled js-assets-list">
        <li v-for="link in assets.links" :key="link.name" class="gl-mb-3">
          <gl-link v-gl-tooltip.bottom :title="__('Download asset')" :href="link.directAssetUrl">
            <icon name="package" class="align-middle gl-mr-2 align-text-bottom" />
            {{ link.name }}
            <span v-if="link.external" data-testid="external-link-indicator">{{
              __('(external source)')
            }}</span>
          </gl-link>
        </li>
      </ul>

      <div v-if="hasAssets" class="dropdown">
        <button
          type="button"
          class="btn btn-link"
          data-toggle="dropdown"
          aria-haspopup="true"
          aria-expanded="false"
        >
          <icon name="doc-code" class="align-top gl-mr-2" />
          {{ __('Source code') }}
          <icon name="chevron-down" />
        </button>

        <div class="js-sources-dropdown dropdown-menu">
          <li v-for="asset in assets.sources" :key="asset.url">
            <gl-link :href="asset.url">{{ __('Download') }} {{ asset.format }}</gl-link>
          </li>
        </div>
      </div>
    </template>
  </div>
</template>
