<!--
// Copyright © 2023 Hardcore Engineering Inc.
//
// Licensed under the Eclipse Public License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License. You may
// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
-->
<script lang="ts">
  import { IconAdd, IconDelete, Label } from '@hcengineering/ui'
  import { personAccountByIdStore, PersonAccountRefPresenter } from '@hcengineering/contact-resources'
  import { Person, PersonAccount } from '@hcengineering/contact'
  import { Ref } from '@hcengineering/core'
  import { DocAttributeUpdates } from '@hcengineering/activity'
  import notification from '@hcengineering/notification'

  export let value: DocAttributeUpdates

  $: removed = getAccountRefs(value.removed)
  $: added = getAccountRefs(value.added.length > 0 ? value.added : value.set)

  function getAccountRefs (values: DocAttributeUpdates['removed' | 'added' | 'set']): Ref<PersonAccount>[] {
    const persons = new Set<Ref<Person>>()

    return values.filter((value) => {
      const account = $personAccountByIdStore.get(value as Ref<PersonAccount>)

      if (account === undefined) {
        return false
      }

      if (persons.has(account.person)) {
        return false
      }

      persons.add(account.person)
      return true
    }) as Ref<PersonAccount>[]
  }

  $: hasDifferentChanges = added.length > 0 && removed.length > 0
</script>

<div class="root">
  <div class="label">
    {#if hasDifferentChanges}
      <Label label={notification.string.ChangedCollaborators} />:
    {:else if added.length > 0}
      <Label label={notification.string.NewCollaborators} />:
    {:else if removed.length > 0}
      <Label label={notification.string.RemovedCollaborators} />:
    {/if}
  </div>

  {#if added.length > 0}
    <div class="row">
      {#if hasDifferentChanges}
        <IconAdd size={'x-small'} fill={'var(--theme-trans-color)'} />
      {/if}
      {#each added as add}
        <PersonAccountRefPresenter inline value={add} />
      {/each}
    </div>
  {/if}
  <div class="antiHSpacer"></div>
  {#if removed.length > 0}
    <div class="row">
      {#if hasDifferentChanges}
        <IconDelete size={'x-small'} fill={'var(--theme-trans-color)'} />
      {/if}
      {#each removed as remove}
        <PersonAccountRefPresenter inline value={remove} />
      {/each}
    </div>
  {/if}
</div>

<style lang="scss">
  .root {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
  }

  .label {
    white-space: nowrap;
  }

  .row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
  }
</style>
