<template>
  <div class="kefu">
    <div
      v-for="item in conversationList"
      :key="item.id"
      :class="{ active: item.id === activeConversationId, pinned: item.adminPinned }"
      class="kefu-conversation flex items-center"
      @click="openRightMessage(item)"
      @contextmenu.prevent="rightClick($event as PointerEvent, item)"
    >
      <div class="flex justify-center items-center w-100%">
        <div class="flex justify-center items-center w-50px h-50px">
          <!-- 头像 + 未读 -->
          <el-badge
            :hidden="item.adminUnreadMessageCount === 0"
            :max="99"
            :value="item.adminUnreadMessageCount"
          >
            <el-avatar :src="item.userAvatar" alt="avatar" />
          </el-badge>
        </div>
        <div class="ml-10px w-100%">
          <div class="flex justify-between items-center w-100%">
            <span class="username">{{ item.userNickname }}</span>
            <span class="color-[var(--left-menu-text-color)]" style="font-size: 13px;">
              {{ formatPast(item.lastMessageTime, 'YYYY-MM-DD') }}
            </span>
          </div>
          <!-- 最后聊天内容 -->
          <div
            v-dompurify-html="getConversationDisplayText(item.lastMessageContentType, item.lastMessageContent)"
            class="last-message flex items-center color-[var(--left-menu-text-color)]"
          >
          </div>
        </div>
      </div>
    </div>

    <!-- 右键，进行操作（类似微信） -->
    <ul v-show="showRightMenu" :style="rightMenuStyle" class="right-menu-ul">
      <li
        v-show="!rightClickConversation.adminPinned"
        class="flex items-center"
        @click.stop="updateConversationPinned(true)"
      >
        <Icon class="mr-5px" icon="ep:top" />
        置顶会话
      </li>
      <li
        v-show="rightClickConversation.adminPinned"
        class="flex items-center"
        @click.stop="updateConversationPinned(false)"
      >
        <Icon class="mr-5px" icon="ep:bottom" />
        取消置顶
      </li>
      <li class="flex items-center" @click.stop="deleteConversation">
        <Icon class="mr-5px" color="red" icon="ep:delete" />
        删除会话
      </li>
      <li class="flex items-center" @click.stop="closeRightMenu">
        <Icon class="mr-5px" color="red" icon="ep:close" />
        取消
      </li>
    </ul>
  </div>
</template>

<script lang="ts" setup>
import { KeFuConversationApi, KeFuConversationRespVO } from '@/api/mall/promotion/kefu/conversation'
import { useEmoji } from './tools/emoji'
import { formatPast } from '@/utils/formatTime'
import { KeFuMessageContentTypeEnum } from './tools/constants'
import { useAppStore } from '@/store/modules/app'

defineOptions({ name: 'KeFuConversationList' })

const message = useMessage() // 消息弹窗
const appStore = useAppStore()
const { replaceEmoji } = useEmoji()
const conversationList = ref<KeFuConversationRespVO[]>([]) // 会话列表
const activeConversationId = ref(-1) // 选中的会话
const collapse = computed(() => appStore.getCollapse) // 折叠菜单

/** 加载会话列表 */
const getConversationList = async () => {
  const list = await KeFuConversationApi.getConversationList()
  list.sort((a: KeFuConversationRespVO, _) => (a.adminPinned ? -1 : 1))
  conversationList.value = list
}
defineExpose({ getConversationList })

/** 打开右侧的消息列表 */
const emits = defineEmits<{
  (e: 'change', v: KeFuConversationRespVO): void
}>()
const openRightMessage = (item: KeFuConversationRespVO) => {
  activeConversationId.value = item.id
  emits('change', item)
}

/** 获得消息类型 */
const getConversationDisplayText = computed(
  () => (lastMessageContentType: number, lastMessageContent: string) => {
    switch (lastMessageContentType) {
      case KeFuMessageContentTypeEnum.SYSTEM:
        return '[系统消息]'
      case KeFuMessageContentTypeEnum.VIDEO:
        return '[视频消息]'
      case KeFuMessageContentTypeEnum.IMAGE:
        return '[图片消息]'
      case KeFuMessageContentTypeEnum.PRODUCT:
        return '[商品消息]'
      case KeFuMessageContentTypeEnum.ORDER:
        return '[订单消息]'
      case KeFuMessageContentTypeEnum.VOICE:
        return '[语音消息]'
      case KeFuMessageContentTypeEnum.TEXT:
        return replaceEmoji(lastMessageContent)
      default:
        return ''
    }
  }
)

//======================= 右键菜单 =======================
const showRightMenu = ref(false) // 显示右键菜单
const rightMenuStyle = ref<any>({}) // 右键菜单 Style
const rightClickConversation = ref<KeFuConversationRespVO>({} as KeFuConversationRespVO) // 右键选中的会话对象

/** 打开右键菜单 */
const rightClick = (mouseEvent: PointerEvent, item: KeFuConversationRespVO) => {
  rightClickConversation.value = item
  // 显示右键菜单
  showRightMenu.value = true
  rightMenuStyle.value = {
    top: mouseEvent.clientY - 110 + 'px',
    left: collapse.value ? mouseEvent.clientX - 80 + 'px' : mouseEvent.clientX - 210 + 'px'
  }
}
/** 关闭右键菜单 */
const closeRightMenu = () => {
  showRightMenu.value = false
}

/** 置顶会话 */
const updateConversationPinned = async (adminPinned: boolean) => {
  // 1. 会话置顶/取消置顶
  await KeFuConversationApi.updateConversationPinned({
    id: rightClickConversation.value.id,
    adminPinned
  })
  message.notifySuccess(adminPinned ? '置顶成功' : '取消置顶成功')
  // 2. 关闭右键菜单，更新会话列表
  closeRightMenu()
  await getConversationList()
}

/** 删除会话 */
const deleteConversation = async () => {
  // 1. 删除会话
  await message.confirm('您确定要删除该会话吗？')
  await KeFuConversationApi.deleteConversation(rightClickConversation.value.id)
  // 2. 关闭右键菜单，更新会话列表
  closeRightMenu()
  await getConversationList()
}

/** 监听右键菜单的显示状态，添加点击事件监听器 */
watch(showRightMenu, (val) => {
  if (val) {
    document.body.addEventListener('click', closeRightMenu)
  } else {
    document.body.removeEventListener('click', closeRightMenu)
  }
})
</script>

<style lang="scss" scoped>
.kefu {
  &-conversation {
    height: 60px;
    padding: 10px;
    //background-color: #fff;
    transition: border-left 0.05s ease-in-out; /* 设置过渡效果 */

    .username {
      min-width: 0;
      max-width: 60%;
      overflow: hidden;
      text-overflow: ellipsis;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 1;
    }

    .last-message {
      font-size: 13px;
      width: 200px;
      overflow: hidden; // 隐藏超出的文本
      white-space: nowrap; // 禁止换行
      text-overflow: ellipsis; // 添加省略号
    }
  }

  .active {
    border-left: 5px #3271ff solid;
    background-color: var(--left-menu-bg-active-color);
  }

  .pinned {
    background-color: var(--left-menu-bg-active-color);
  }

  .right-menu-ul {
    position: absolute;
    background-color: var(--app-content-bg-color);
    padding: 10px;
    margin: 0;
    list-style-type: none; /* 移除默认的项目符号 */
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* 阴影效果 */
    width: 130px;

    li {
      padding: 8px 16px;
      cursor: pointer;
      border-radius: 12px;
      transition: background-color 0.3s; /* 平滑过渡 */
      &:hover {
        background-color: var(--left-menu-bg-active-color); /* 悬停时的背景颜色 */
      }
    }
  }
}
</style>
