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<script>
import { mapActions, mapGetters, mapState } from 'vuex';
import { GlTooltipDirective } from '@gitlab/ui';
import { s__, sprintf } from '~/locale';
import Icon from '~/vue_shared/components/icon.vue';
import FileTree from '~/vue_shared/components/file_tree.vue';
import DiffFileRow from './diff_file_row.vue';
import FileRowStats from './file_row_stats.vue';

export default {
  directives: {
    GlTooltip: GlTooltipDirective,
  },
  components: {
    Icon,
    FileTree,
  },
  props: {
    hideFileStats: {
      type: Boolean,
      required: true,
    },
  },
  data() {
    return {
      search: '',
    };
  },
  computed: {
    ...mapState('diffs', ['tree', 'renderTreeList']),
    ...mapGetters('diffs', ['allBlobs']),
    filteredTreeList() {
      const search = this.search.toLowerCase().trim();

      if (search === '') {
        return this.renderTreeList ? this.tree : this.allBlobs;
      }

      return this.allBlobs.reduce((acc, folder) => {
        const tree = folder.tree.filter(f => f.path.toLowerCase().indexOf(search) >= 0);

        if (tree.length) {
          return acc.concat({
            ...folder,
            tree,
          });
        }

        return acc;
      }, []);
    },
    fileRowExtraComponent() {
      return this.hideFileStats ? null : FileRowStats;
    },
  },
  methods: {
    ...mapActions('diffs', ['toggleTreeOpen', 'scrollToFile']),
    clearSearch() {
      this.search = '';
    },
  },
  searchPlaceholder: sprintf(s__('MergeRequest|Search files (%{modifier_key}P)'), {
    modifier_key: /Mac/i.test(navigator.userAgent) ? '⌘' : 'Ctrl+',
  }),
  DiffFileRow,
};
</script>

<template>
  <div class="tree-list-holder d-flex flex-column">
    <div class="append-bottom-8 position-relative tree-list-search d-flex">
      <div class="flex-fill d-flex">
        <icon name="search" class="position-absolute tree-list-icon" />
        <label for="diff-tree-search" class="sr-only">{{ $options.searchPlaceholder }}</label>
        <input
          id="diff-tree-search"
          v-model="search"
          :placeholder="$options.searchPlaceholder"
          type="search"
          name="diff-tree-search"
          class="form-control"
        />
        <button
          v-show="search"
          :aria-label="__('Clear search')"
          type="button"
          class="position-absolute bg-transparent tree-list-icon tree-list-clear-icon border-0 p-0"
          @click="clearSearch"
        >
          <icon name="close" />
        </button>
      </div>
    </div>
    <div :class="{ 'pt-0 tree-list-blobs': !renderTreeList }" class="tree-list-scroll">
      <template v-if="filteredTreeList.length">
        <file-tree
          v-for="file in filteredTreeList"
          :key="file.key"
          :file="file"
          :level="0"
          :hide-extra-on-tree="true"
          :extra-component="fileRowExtraComponent"
          :show-changed-icon="true"
          :file-row-component="$options.DiffFileRow"
          @toggleTreeOpen="toggleTreeOpen"
          @clickFile="scrollToFile"
        />
      </template>
      <p v-else class="prepend-top-20 append-bottom-20 text-center">
        {{ s__('MergeRequest|No files found') }}
      </p>
    </div>
  </div>
</template>

<style>
.tree-list-blobs .file-row-name {
  margin-left: 12px;
}

.diff-tree-search-shortcut {
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  pointer-events: none;
}

.tree-list-icon:not(button) {
  pointer-events: none;
}
</style>