<template>
  <view class="home-container">
    <view class="header">
      <div class="header-left">
        <u-icon
          class="header-left-icon"
          name="list"
          @click="handleLeftClick"
        ></u-icon>
      </div>
      <text class="header-title">源小新</text>
      <div></div>
    </view>

    <!-- 首页 -->
    <view class="content" v-if="!isChat">
      <view class="welcome-message">
        <image
          class="avatar"
          src="/static/common/images/images_logo.png"
        ></image>

        <text class="message-text"
          >Hi~我是小小新，您的AI聊天伙伴，未来高效认知助手，我们可尽量互相解惑。</text
        >
      </view>

      <!-- <view class="qa-section">
        <view class="qa-header">
          <text class="qa-title">大家都在问</text>
          <view class="more-link">
            <text class="more-text">换一批</text>
          </view>
        </view>

        <view class="qa-list">
          <view
            class="qa-item"
            v-for="(item, index) in questionList"
            :key="index"
          >
            <text class="qa-question">{{ item }}</text>
          </view>
        </view>

        <button class="chat-button" @click="isChat = true">
          <image
            class="chat-icon"
            src="/static/common/images/icon_chat.png"
          ></image>
          <text class="chat-text">开启对话</text>
        </button>
      </view> -->

      <view class="start-chat">
        <button class="chat-button" @click="isChat = true">
          <image
            class="chat-icon"
            src="/static/common/images/icon_chat.png"
          ></image>
          <text class="chat-text">开启对话</text>
        </button>
      </view>

      <view class="feature-grid">
        <view
          class="feature-item"
          v-for="(item, index) in features"
          :key="index"
          @click="handleFeatureClick(item)"
        >
          <image :src="item.icon" class="feature-icon"></image>
          <text class="feature-text">{{ item.title }}</text>
        </view>
      </view>
    </view>

    <!-- 对话 -->
    <view class="chat-container" v-if="isChat">
      <scroll-view
        class="chat-scroll"
        scroll-y
        :scroll-into-view="scrollToView"
        scroll-with-animation
        :scroll-top="scrollTop"
        :show-scrollbar="true"
        @scrolltoupper="loadMoreMessages"
        @scroll="onScroll"
      >
        <!-- 头部卡片 -->
        <!-- 后端让先注释 -->
        <!-- <view class="chat-card">
          <view class="chat-card-title">源小新AI校园小助手</view>
          <view class="chat-card-desc"
            >我是你们的AI校园助手，我可以为您答疑解惑。</view
          >
          <view class="chat-card-questions">
            <view class="question-item">学校哪些专业比较好?</view>
            <view class="question-item">如何报考学校综合素质评价招生?</view>
            <view class="question-item">学校有那些专业?</view>
            <view class="question-item"
              >学校在录取时有没有一些专业会有特殊...</view
            >
            <view class="question-item">我什么时候能够知道自己是否被录取?</view>
          </view>
        </view> -->

        <!-- 对话内容区域 -->
        <view class="chat-content">
          <!-- 消息循环渲染 -->
          <block
            v-for="(group, groupIndex) in messageGroups"
            :key="'group-' + groupIndex"
          >
            <!-- 时间 -->
            <view class="message-time" v-if="group.time">{{ group.time }}</view>

            <!-- 消息列表 -->
            <block
              v-for="(message, messageIndex) in group.messages"
              :key="'msg-' + groupIndex + '-' + messageIndex"
            >
              <!-- 用户消息 -->
              <view
                class="message-right"
                v-if="message.isUser"
                :id="'msg-' + message.id"
              >
                <view class="message-content">
                  <text>{{ message.content }}</text>
                </view>
                <image
                  class="user-avatar"
                  src="/static/common/images/avatar.png"
                  mode="scaleToFill"
                />
              </view>

              <!-- AI消息 -->
              <view class="message-left" v-else :id="'msg-' + message.id">
                <image
                  class="ai-avatar"
                  src="/static/common/images/avatar_ai.png"
                  mode="scaleToFill"
                />
                <view class="message-content">
                  <text space="nbsp" decode>{{ message.content }}</text>
                </view>
              </view>
            </block>
          </block>
        </view>
      </scroll-view>

      <!-- 底部工具栏 -->
      <view class="chat-footer">
        <!-- 悬浮工具栏 -->
        <view class="floating-tabs">
          <view class="tab-item">
            <image
              class="tab-icon"
              src="/static/common/images/icon_admissions2.png"
              mode="scaleToFill"
            />

            <text>招生在线</text>
          </view>
          <view class="tab-item">
            <image
              class="tab-icon"
              src="/static/common/images/icon_messageBoard2.png"
              mode="scaleToFill"
            />
            <text>留言板</text>
          </view>
          <view class="tab-item">
            <image
              class="tab-icon"
              src="/static/common/images/icon_phone2.png"
              mode="scaleToFill"
            />
            <text>电话咨询</text>
          </view>
        </view>

        <view class="input-container">
          <view class="input-area">
            <input
              type="text"
              class="chat-input"
              placeholder="请输入内容"
              placeholder-style="color: #adadad;"
            />
            <view class="send-btn">
              <image
                class="send-icon"
                src="/static/common/images/icon_send.png"
                mode="scaleToFill"
              />
            </view>
          </view>
        </view>
      </view>
    </view>

    <!-- 对话弹出层 -->
    <u-popup v-model="popupShow" width="550rpx">
      <view class="drawer-container">
        <scroll-view scroll-y class="chat-history-list">
          <view class="chat-day">
            <text class="day-text">周三</text>
          </view>
          <view
            class="chat-item"
            v-for="(item, index) in chatHistoryList"
            :key="index"
            :class="{ 'chat-item-active': index === activeIndex }"
            @click="selectChatItem(index)"
          >
            <text class="chat-text">{{ item.content }}</text>
          </view>
          <view class="chat-day">
            <text class="day-text">6/27</text>
          </view>
          <view
            class="chat-item"
            v-for="(item, index) in chatHistoryList2"
            :key="'history2-' + index"
            :class="{
              'chat-item-active':
                index + chatHistoryList.length === activeIndex,
            }"
            @click="selectChatItem(index + chatHistoryList.length)"
          >
            <text class="chat-text">{{ item.content }}</text>
          </view>
        </scroll-view>

        <view class="drawer-footer">
          <view class="user-info">
            <image
              class="user-avatar"
              src="/static/common/avatar/male.png"
            ></image>
            <!-- <u-avatar
              class="user-avatar"
              src="/static/common/avatar/user-avatar.png"
            ></u-avatar> -->
            <text class="user-name">晓德塔，</text>
          </view>
          <view class="settings">
            <u-icon name="setting" size="40rpx" color="#999"></u-icon>
          </view>
        </view>
      </view>
    </u-popup>

    <!-- 咨询电话弹出层 -->
    <advice-phone :show.sync="advicePhoneShow"></advice-phone>
  </view>
</template>

<script>
import CustomTabBar from "@/components/custom-tab-bar/custom-tab-bar.vue";
import AdvicePhone from "@/components/AdvicePhone.vue";

export default {
  components: {
    CustomTabBar,
    AdvicePhone,
  },
  data() {
    return {
      isChat: false,
      advicePhoneShow: false,

      questionList: [
        "学习哪些专业比较好?",
        "处于香港学校综合录取的城市招生?",
        "学校有新华专业?",
        "学校录取科目与有一些专业会有特殊...",
        "我什么时候能推知道自己是否被录取?",
      ],
      features: [
        {
          title: "招办在线",
          icon: "/static/common/images/icon_admissions.png",
        },
        {
          title: "留言板",
          icon: "/static/common/images/icon_messageBoard.png",
        },
        {
          title: "电话咨询",
          icon: "/static/common/images/icon_phone.png",
        },
      ],
      popupShow: false,
      chatHistoryList: [
        { content: "学校哪些专业比较好?" },
        { content: "如何报考学校综合合录取评澳市评招生?" },
        { content: "学校有新华专业?" },
      ],
      chatHistoryList2: [
        { content: "学校哪些专业比较好?" },
        { content: "如何报考学校综合合录取评澳市评招生?" },
        { content: "如何报考学校综合合录取评澳市评招生?" },
        { content: "如何报考学校综合合录取评澳市评招生?" },
        { content: "如何报考学校综合合录取评澳市评招生?" },
        { content: "学校有新华专业?" },
        { content: "学校有新华专业?" },
        { content: "学校有新华专业?" },
        { content: "学校有新华专业?" },
        { content: "学校有新华专业?" },
      ],
      activeIndex: 0,
      commonQuestions: [
        "新生报到流程",
        "如何报考学校综合合录取评澳市评招生?",
        "学校有新华专业?",
        "学校录取科目与有一些专业会有特殊...",
        "我什么时候能推知道自己是否被录取?",
      ],
      scrollToView: "",
      messageGroups: [
        {
          time: "2025-07-01 10:00:00",
          messages: [
            { id: 1, content: "学校哪些专业比较好?", isUser: true },
            {
              id: 2,
              content:
                "我校有多个优势学科，包括计算机科学与技术、电子信息工程、机械工程、生物医学工程等。这些专业在国内都有较高的学术声誉和就业率。如果您对某个具体专业感兴趣，可以进一步咨询更多详情。",
              isUser: false,
            },
            { id: 3, content: "计算机科学专业就业前景如何？", isUser: true },
            {
              id: 4,
              content:
                "计算机科学专业的就业前景非常好。根据最新数据，我校计算机专业毕业生就业率超过95%，平均起薪在全校名列前茅。主要就业方向包括互联网公司、IT企业、金融科技等领域，担任软件工程师、数据分析师、产品经理等职位。",
              isUser: false,
            },
          ],
        },
        {
          time: "2025-07-02 09:15:36",
          messages: [
            { id: 5, content: "新生报到流程", isUser: true },
            {
              id: 6,
              content:
                "新生报到流程：个人信息完善 --预报到 -- 照片信息采集 --缴费 --入校验审 -- 人脸识别 --打印报到单",
              isUser: false,
            },
            { id: 7, content: "预报到需要准备哪些材料？", isUser: true },
            {
              id: 8,
              content:
                "预报到需要准备以下材料：\n1. 身份证原件及复印件\n2. 录取通知书原件\n3. 2寸蓝底证件照4张\n4. 学籍档案(密封)\n5. 党团关系材料(如有)\n\n建议提前准备齐全，以便快速完成报到流程。",
              isUser: false,
            },
          ],
        },
      ],
      scrollTop: 0,
    };
  },
  watch: {
    // 确保消息更新后自动滚动到底部
    messageGroups: {
      handler() {
        this.$nextTick(() => {
          this.scrollToBottom();
        });
      },
      deep: true,
    },
  },
  onLoad() {},
  mounted() {
    this.$nextTick(() => {
      this.scrollToBottom();
    });
  },
  updated() {
    this.$nextTick(() => {
      this.scrollToBottom();
    });
  },
  methods: {
    handleLeftClick() {
      this.popupShow = true;
    },
    selectChatItem(index) {
      this.activeIndex = index;
    },
    loadMoreMessages() {
      // 加载更多历史消息的实现
      console.log("加载更多历史消息");
    },
    onScroll(event) {
      // 滚动事件处理
    },
    scrollToBottom() {
      // 使用nextTick确保DOM已更新
      this.$nextTick(() => {
        // 获取滚动区域的高度
        const query = uni.createSelectorQuery().in(this);
        query
          .select(".chat-content")
          .boundingClientRect((data) => {
            if (data) {
              // 计算滚动到底部的位置
              const scrollHeight = data.height;
              // 设置滚动位置，加100px确保滚动到底部
              this.scrollTop = scrollHeight + 100;
            }
          })
          .exec();
      });
    },
    handleFeatureClick(item) {
      if (item.title === "电话咨询") {
        this.advicePhoneShow = true;
      } else if (item.title === "招办在线") {
        uni.navigateTo({
          url: "/pages/home/admissions/index",
        });
      } else if (item.title === "留言板") {
        // this.leaveMessageShow = true;
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.home-container {
  height: 100vh;
  // background-color: #f5f7fc;
  padding-bottom: calc(
    112rpx + env(safe-area-inset-bottom)
  ); /* 为自定义tabBar预留空间 */
  padding-top: 88rpx;

  background-image: url("/static/common/images/images_bg.png");
  width: 100%;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-position: 0 88rpx;

  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #ffffff;
    height: 88rpx;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30rpx;
    z-index: 99;

    .header-left {
      font-size: 36rpx;
    }

    .header-title {
      font-size: 36rpx;
      font-weight: 500;
      color: #333333;
    }
  }

  .content {
    padding: 30rpx;
    padding-top: 100rpx;

    .welcome-message {
      //   display: inline-block;
      //   flex-wrap: wrap;
      background-color: rgba(255, 255, 255, 0.8);
      border-radius: 16rpx;
      padding: 24rpx;
      margin-bottom: 32rpx;
      // margin-bottom: 100rpx;

      .avatar {
        display: inline-block;
        width: 42rpx;
        height: 34rpx;
        margin-right: 12rpx;
      }

      .message-text {
        font-size: 24rpx;
        color: #333333;
        font-family: PingFang SC;
        vertical-align: super;
      }
    }

    .qa-section {
      background-color: #ffffff;
      border-radius: 16rpx;
      padding: 30rpx;
      margin-bottom: 32rpx;

      .qa-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 30rpx;

        .qa-title {
          font-size: 32rpx;
          font-weight: 500;
          color: #333;
        }

        .more-link {
          .more-text {
            font-size: 26rpx;
            color: #999;
          }
        }
      }

      .qa-list {
        .qa-item {
          margin-bottom: 24rpx;

          .qa-question {
            font-size: 28rpx;
            color: #333;
            line-height: 1.5;
          }
        }
      }

      .chat-button {
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #4377fe;
        border-radius: 16rpx;
        height: 88rpx;
        width: 100%;
        margin-top: 30rpx;
        border: none;

        .chat-icon {
          width: 38rpx;
          height: 32rpx;
          margin-right: 12rpx;
        }

        .chat-text {
          color: #ffffff;
          font-size: 32rpx;
        }
      }
    }

    .start-chat {
      .chat-button {
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #4377fe;
        border-radius: 16rpx;
        height: 88rpx;
        width: 100%;
        margin-top: 30rpx;
        border: none;

        .chat-icon {
          width: 38rpx;
          height: 32rpx;
          margin-right: 12rpx;
        }

        .chat-text {
          color: #ffffff;
          font-size: 32rpx;
        }
      }
    }

    .feature-grid {
      background-color: #ffffff;
      border-radius: 16rpx;
      padding: 30rpx;
      display: flex;
      justify-content: space-between;
      margin-top: 32rpx;
      gap: 30rpx;

      .feature-item {
        height: 210rpx;
        border-radius: 16rpx;
        background-color: #fafafc;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        // gap: 20rpx;
        flex: 1;

        .feature-icon {
          width: 80rpx;
          height: 80rpx;
          margin-bottom: 12rpx;
        }

        .feature-text {
          font-size: 26rpx;
          color: #333333;
        }
      }
    }
  }
}

.drawer-container {
  padding: 32rpx;
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #ffffff;

  .chat-history-list {
    flex: 1;
    // padding: 30rpx 40rpx;
    height: calc(100vh - 200rpx);

    .chat-day {
      display: flex;
      margin: 20rpx 0 20rpx 30rpx;

      .day-text {
        font-size: 24rpx;
        color: #999999;
        font-family: PingFang SC;
        margin-bottom: 10rpx;
      }
    }

    .chat-item {
      padding: 24rpx 30rpx;
      border-radius: 16rpx;
      // margin-bottom: 30rpx;

      .chat-text {
        font-size: 28rpx;
        color: #303030;
        font-family: PingFang SC;
      }

      &-active {
        background-color: #4f6aff;

        .chat-text {
          color: #fff;
        }
      }
    }
  }

  .drawer-footer {
    height: 130rpx;
    border: 1rpx solid #eeeeee;
    border-radius: 12rpx;
    padding: 0 30rpx;
    display: flex;
    justify-content: space-between;
    align-items: center;

    .user-info {
      display: flex;
      align-items: center;

      .user-avatar {
        width: 56rpx;
        height: 56rpx;
        border-radius: 50%;
        margin-right: 30rpx;
      }

      .user-name {
        font-size: 28rpx;
        font-weight: bold;
        font-family: DouyinSans;
        color: #333;
      }
    }

    .settings {
      padding: 10rpx;
    }
  }
}

/* 响应式布局 - PC端样式 */
@media screen and (min-width: 768px) {
  .home-container {
    .content {
      max-width: 1200rpx;
      margin: 0 auto;

      .qa-section {
        .qa-list {
          display: flex;
          flex-wrap: wrap;

          .qa-item {
            width: 48%;
            margin-right: 2%;
          }
        }
      }

      .feature-grid {
        max-width: 1200rpx;
        margin: 40rpx auto 0;
      }
    }
  }
}

.chat-container {
  display: flex;
  flex-direction: column;
  padding: 30rpx;
  box-sizing: border-box;

  .chat-scroll {
    flex: 1;
    flex-shrink: 0;
    // overflow-y: auto; /* 使用auto而不是scroll */ // 添加这行会导致滚动条不见
  }

  .chat-card {
    background-color: #ffffff;
    border-radius: 16rpx;
    padding: 30rpx;
    margin-bottom: 30rpx;

    .chat-card-title {
      font-size: 32rpx;
      font-weight: 500;
      color: #333333;
      margin-bottom: 10rpx;
    }

    .chat-card-desc {
      font-size: 24rpx;
      color: #666666;
      margin-bottom: 20rpx;
    }

    .chat-card-questions {
      display: flex;
      flex-direction: column;
      gap: 16rpx;

      .question-item {
        font-size: 28rpx;
        color: #333333;
        line-height: 1.5;
      }
    }
  }

  .chat-content {
    flex: 1;
    padding: 20rpx 0;
    margin-bottom: 150rpx;

    .message-time {
      text-align: center;
      font-size: 24rpx;
      color: #999999;
      padding: 20rpx;
    }

    .message-left,
    .message-right {
      display: flex;
      margin-bottom: 30rpx;
      align-items: flex-start;
    }

    .message-left {
      .ai-avatar {
        width: 64rpx;
        height: 64rpx;
        border-radius: 50%;
        margin-right: 16rpx;
        flex-shrink: 0;
      }

      .message-content {
        background-color: #ffffff;
        color: #333333;
        max-width: 70%;
        padding: 20rpx 24rpx;
        border-radius: 0 16rpx 16rpx 16rpx;
        font-size: 28rpx;
        line-height: 1.5;
      }
    }

    .message-right {
      justify-content: flex-end;

      .user-avatar {
        width: 64rpx;
        height: 64rpx;
        border-radius: 50%;
        margin-left: 16rpx;
        background-color: #f0f0f0;
        flex-shrink: 0;
      }

      .message-content {
        background-color: #4370fe;
        color: #ffffff;
        max-width: 70%;
        padding: 20rpx 24rpx;
        border-radius: 16rpx 0 16rpx 16rpx;
        font-size: 28rpx;
        line-height: 1.5;
        text-align: right;
      }
    }
  }

  .chat-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;

    .floating-tabs {
      display: flex;
      justify-content: flex-start;
      margin: 0 0 20rpx 20rpx;

      .tab-item {
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: center;
        background-color: #ffffff;
        padding: 8rpx 24rpx;
        border-radius: 50rpx;
        box-shadow: 0 2rpx 10rpx rgba(0, 0, 0, 0.1);
        margin-right: 12rpx;

        .tab-icon {
          width: 28rpx;
          height: 28rpx;
          margin-right: 10rpx;
        }

        text {
          font-size: 28rpx;
          color: #333333;
        }
      }
    }

    .input-container {
      padding: 32rpx;
      background-color: #fff;
      box-shadow: 0 -2rpx 10rpx rgba(0, 0, 0, 0.05);

      .input-area {
        display: flex;
        align-items: center;
        background-color: #f2f4f9;
        border-radius: 20rpx;
        padding: 16rpx 24rpx;
        box-sizing: border-box;

        .chat-input {
          flex: 1;
          height: 40rpx;
          font-size: 28rpx;
          color: #333;
          background-color: transparent;
        }

        .send-btn {
          width: 50rpx;
          height: 50rpx;
          display: flex;
          align-items: center;
          justify-content: center;

          .send-icon {
            width: 40rpx;
            height: 46rpx;
          }
        }
      }
    }
  }
}
</style>
