<template>
  <div
    :class="{
      diffs: true,
      full: !showLogs,
      split: showLogs
    }"
  >
    <virtual-list
      :size="scrollistConfig.size"
      :remain="scrollistConfig.remain"
      :bench="scrollistConfig.bench"
    >
      <Item
        class="d-flex flex-row px-2 border-top"
        v-for="(item, index) in details.summary"
        @openDiff="toggleDiff"
        :key="index"
        :line="item"
        :index="index"
        :showDiff="showDiff"
      />
    </virtual-list>
  </div>
</template>

<style scoped>
.diffs {
  width: 100%;
  overflow-y: auto;
}
.diffs > div {
  border-top: dashed 1px #dee2e6;
}
.diffs > div:first-child {
  border-top: none;
}
.diffs > div .compare-table {
  position: relative;
  overflow: hidden;
}
.diffs > div .compare-table::after {
  content: "";
  position: absolute;
  top: 0;
  right: -5px;
  bottom: 0;
  left: -5px;
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.4);
}
.diffs > div .compare-table > div {
  font-size: 0.7rem;
}
.diffs > div .compare-table > div:nth-child(odd) {
  background-color: #f8f9fa;
}

.split {
  max-height: 35vh;
}

.full {
  max-height: 70vh;
}
</style>

<script>
/* This is Free Software under GNU Affero General Public License v >= 3.0
 * without warranty, see README.md and license for details.
 *
 * SPDX-License-Identifier: AGPL-3.0-or-later
 * License-Filename: LICENSES/AGPL-3.0.txt
 *
 * Copyright (C) 2018 by via donau
 *   – Österreichische Wasserstraßen-Gesellschaft mbH
 * Software engineering by Intevation GmbH
 *
 * Author(s):
 * Thomas Junk <thomas.junk@intevation.de>
 */
import { mapState } from "vuex";
import virtualList from "vue-virtual-scroll-list";

export default {
  data() {
    return {
      showDiff: 0 // open first item by default
    };
  },
  components: {
    "virtual-list": virtualList,
    Item: () => import("./AGMLogItem")
  },
  computed: {
    ...mapState("imports", ["showLogs", "details"]),
    scrollistConfig() {
      const smallLayout = {
        size: 20,
        remain: 10,
        bench: 12
      };
      const largeLayout = {
        size: 22,
        remain: 12,
        bench: 14
      };
      if (this.showAdditional) return smallLayout;
      return largeLayout;
    }
  },
  methods: {
    toggleDiff(number) {
      if (this.showDiff !== number) {
        this.showDiff = number;
      } else {
        this.showDiff = false;
      }
    }
  }
};
</script>