<template>
  <div
    class="conversation-item-container"
    :class="{
      choose:
        conversation.conversationID === currentConversation.conversationID,
    }"
    @click="selectConversation"
  >
    <div class="close-btn">
      <span
        class="tim-icon-close"
        title="删除会话"
        @click="deleteConversation"
      ></span>
    </div>
    <div class="warp">
      <avatar :src="avatar" :type="conversation.type" />
      <div class="content">
        <div class="row-1">
          <div class="name">
            <div class="text-ellipsis">
              <span
                :title="
                  conversation.userProfile.nick ||
                  conversation.userProfile.userID
                "
                v-if="conversation.type === TIM.TYPES.CONV_C2C"
                >{{
                  conversation.userProfile.nick ||
                  conversation.userProfile.userID
                }}
              </span>
              <span
                :title="
                  conversation.groupProfile.name ||
                  conversation.groupProfile.groupID
                "
                v-else-if="conversation.type === TIM.TYPES.CONV_GROUP"
                >{{
                  conversation.groupProfile.name ||
                  conversation.groupProfile.groupID
                }}
              </span>
              <span v-else-if="conversation.type === TIM.TYPES.CONV_SYSTEM"
                >系统通知
              </span>
            </div>
          </div>
          <div class="unread-count">
            <span class="badge" v-if="showUnreadCount">
              {{
                conversation.unreadCount > 99 ? "99+" : conversation.unreadCount
              }}
            </span>
          </div>
        </div>
        <div class="row-2">
          <div class="summary">
            <div v-if="conversation.lastMessage" class="text-ellipsis">
              <span class="remind" style="color: red" v-if="hasMessageAtMe"
                >[有人提到我]</span
              >
              <span
                class="text"
                :title="conversation.lastMessage.messageForShow"
              >
                {{ messageForShow }}
              </span>
            </div>
          </div>
          <div class="date">
            {{ date }}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapGetters, mapState } from "vuex";
import _ from "loadsh";
import { getDate, getTime, isToday } from "../../utils/date";

export default {
  name: "conversation-item",
  props: ["conversation"],
  filters: {},
  data() {
    return {
      popoverVisible: false,
      hasMessageAtMe: false,
    };
  },
  computed: {
    showUnreadCount() {
      if (this.$store.getters.hidden) {
        return this.conversation.unreadCount > 0;
      }
      // 是否显示未读计数。当前会话和未读计数为0的会话，不显示。
      return (
        this.currentConversation.conversationID !==
          this.conversation.conversationID && this.conversation.unreadCount > 0
      );
    },
    date() {
      if (
        !this.conversation.lastMessage ||
        !this.conversation.lastMessage.lastTime
      ) {
        return "";
      }
      const date = new Date(this.conversation.lastMessage.lastTime * 1000);
      if (isToday(date)) {
        return getTime(date);
      }
      return getDate(date);
    },
    avatar: function () {
      switch (this.conversation.type) {
        case "GROUP":
          return this.conversation.groupProfile.avatar;
        case "C2C":
          return this.conversation.userProfile.avatar;
        default:
          return "";
      }
    },
    conversationName: function () {
      if (this.conversation.type === this.TIM.TYPES.CONV_C2C) {
        return (
          this.conversation.userProfile.nick ||
          this.conversation.userProfile.userID
        );
      }
      if (this.conversation.type === this.TIM.TYPES.CONV_GROUP) {
        return (
          this.conversation.groupProfile.name ||
          this.conversation.groupProfile.groupID
        );
      }
      if (this.conversation.type === this.TIM.TYPES.CONV_SYSTEM) {
        return "系统通知";
      }
      return "";
    },
    showGrayBadge() {
      if (this.conversation.type !== this.TIM.TYPES.CONV_GROUP) {
        return false;
      }
      return (
        this.conversation.groupProfile.selfInfo.messageRemindType ===
        "AcceptNotNotify"
      );
    },
    messageForShow() {
      if (this.conversation.lastMessage.isRevoked) {
        if (
          this.conversation.lastMessage.fromAccount ===
          this.currentUserProfile.userID
        ) {
          return "你撤回了一条消息";
        }
        if (this.conversation.type === this.TIM.TYPES.CONV_C2C) {
          return "对方撤回了一条消息";
        }
        return `${
          this.conversation.lastMessage.nick ||
          this.conversation.lastMessage.fromAccount
        }撤回了一条消息`;
      } else {
        switch (_.get(this.conversation.lastMessage, "payload.data", "other")) {
          case "image":
            return "[图片]";
          case "video":
            return "[视频]";
          default:
            return this.conversation.lastMessage.messageForShow;
        }
      }
    },
    ...mapState({
      currentConversation: (state) => state.conversation.currentConversation,
      currentUserProfile: (state) => state.user.currentUserProfile,
    }),
    ...mapGetters(["toAccount"]),
  },
  mounted() {
    this.$bus.$on("new-messsage-at-me", (event) => {
      if (
        event.data.conversationID === this.conversation.conversationID &&
        this.conversation.conversationID !==
          this.currentConversation.conversationID
      ) {
        this.hasMessageAtMe = true;
      }
    });
  },
  methods: {
    selectConversation() {
      if (
        this.conversation.conversationID !==
        this.currentConversation.conversationID
      ) {
        this.$store.dispatch(
          "checkoutConversation",
          this.conversation.conversationID
        );
      }
    },
    deleteConversation(event) {
      // 停止冒泡，避免和点击会话的事件冲突
      event.stopPropagation();
      this.tim
        .deleteConversation(this.conversation.conversationID)
        .then(() => {
          this.$store.commit("showMessage", {
            message: `会话【${this.conversationName}】删除成功!`,
            type: "success",
          });
          this.popoverVisible = false;
          this.$store.commit("resetCurrentConversation");
        })
        .catch((error) => {
          this.$store.commit("showMessage", {
            message: `会话【${this.conversationName}】删除失败!, error=${error.message}`,
            type: "error",
          });
          this.popoverVisible = false;
        });
    },
    showContextMenu() {
      this.popoverVisible = true;
    },
  },
  watch: {
    currentConversation(next) {
      if (next.conversationID === this.conversation.conversationID) {
        this.hasMessageAtMe = false;
      }
    },
  },
};
</script>

<style lang="stylus" scoped>


.conversation-item-container
  padding 15px 20px
  cursor pointer
  position relative
  overflow hidden
  transition .2s
  // &:first-child
  //   padding-top 30px

  &:hover
    background-color $background

    .close-btn
      right 3px

  .close-btn
    position absolute
    right -20px
    top 3px
    color $font-dark
    transition: all .2s ease;

    &:hover
      color $danger

  .warp
    display flex

  .avatar
    width 40px
    height 40px
    margin-right 10px
    border-radius 50%
    flex-shrink 0

  .content
    flex 1
    height 40px
    overflow hidden

    .row-1
      display flex
      line-height 21px

      .name
        color $font-light
        flex 1
        min-width 0px

      .unread-count
        padding-left 10px
        flex-shrink 0
        color $font-dark
        font-size 12px

        .badge
          vertical-align bottom
          background-color $danger
          border-radius 10px
          color #FFF
          display inline-block
          font-size 12px
          height 18px
          max-width 40px
          line-height 18px
          padding 0 6px
          text-align center
          white-space nowrap

    .row-2
      display flex
      font-size 12px
      padding-top 3px

      .summary
        flex 1
        overflow hidden
        min-width 0px
        color: $secondary

        .remind
          color $danger

      .date
        padding-left 10px
        flex-shrink 0
        text-align right
        color $font-dark

.choose {
  background-color: $background;
}

.context-menu-button {
  padding: 10px
  border: 2px solid $primary;
  border-radius: 8px;
}
</style>