<template>
  <div
    id="panes"
    :class="[
      'd-flex flex-wrap position-absolute',
      { 'flex-column': ['left', 'right'].includes(paneMode) }
    ]"
  >
    <template v-if="panes.length === 1">
      <div id="pane1" class="pane wh-100"><component :is="panes[0]" /></div>
    </template>

    <template v-if="panes.length === 2">
      <template v-if="paneMode === 'horizontal'">
        <div id="pane1" class="pane w-100 h-50">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-100 h-50">
          <component :is="panes[1]" />
        </div>
      </template>
      <template v-if="paneMode === 'vertical'">
        <div id="pane1" class="pane w-50 h-100">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-50 h-100">
          <component :is="panes[1]" />
        </div>
      </template>
    </template>

    <template v-if="panes.length === 3">
      <template v-if="paneMode === 'top'">
        <div id="pane1" class="pane w-100 h-50">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-50 h-50">
          <component :is="panes[1]" />
        </div>
        <div id="pane3" class="pane w-50 h-50">
          <component :is="panes[2]" />
        </div>
      </template>
      <template v-if="paneMode === 'right'">
        <div id="pane1" class="pane w-50 h-50">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-50 h-50">
          <component :is="panes[1]" />
        </div>
        <div id="pane3" class="pane w-50 h-100">
          <component :is="panes[2]" />
        </div>
      </template>
      <template v-if="paneMode === 'bottom'">
        <div id="pane1" class="pane w-50 h-50">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-50 h-50">
          <component :is="panes[1]" />
        </div>
        <div id="pane3" class="pane w-100 h-50">
          <component :is="panes[2]" />
        </div>
      </template>
      <template v-if="paneMode === 'left'">
        <div id="pane1" class="pane w-50 h-100">
          <component :is="panes[0]" />
        </div>
        <div id="pane2" class="pane w-50 h-50">
          <component :is="panes[1]" />
        </div>
        <div id="pane3" class="pane w-50 h-50">
          <component :is="panes[2]" />
        </div>
      </template>
    </template>

    <template v-if="panes.length === 4">
      <div id="pane1" class="pane w-50 h-50"><component :is="panes[0]" /></div>
      <div id="pane2" class="pane w-50 h-50"><component :is="panes[1]" /></div>
      <div id="pane3" class="pane w-50 h-50"><component :is="panes[2]" /></div>
      <div id="pane4" class="pane w-50 h-50"><component :is="panes[3]" /></div>
    </template>
  </div>
</template>

<style lang="sass" scoped>
#panes
  top: -1.5px
  right: -1.5px
  bottom: -1.5px
  left: -1.5px
  z-index: 1
  .pane
    border: solid 1.5px #fff
    background-color: #eee
    background-image: linear-gradient(45deg, #e8e8e8 25%, transparent 25%, transparent 75%, #e8e8e8 75%, #e8e8e8), linear-gradient(45deg, #e8e8e8 25%, transparent 25%, transparent 75%, #e8e8e8 75%, #e8e8e8)
    background-size: 20px 20px
    background-position: 0 0, 10px 10px
</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>
 * Markus Kottländer <markus.kottlaender@intevation.de>
 */

import { mapState } from "vuex";

export default {
  components: {
    // all components that are supposed to be displayed in a pane must be registered here
    Map: () => import("./map/Map")
  },
  computed: {
    ...mapState("application", ["panes", "paneMode"])
  }
};
</script>