<template>
  <div :style="{ height: heightrg }">
    <div style="padding: 10px">
      <a-avatar :style="{ backgroundColor: '#3370ff' }">
        <img
          :style="{ width: '100%' }"
          alt="dessert"
          src="https://p1-arco.byteimg.com/tos-cn-i-uwbnlip3yd/a20012a2d4d5b9db43dfc6a01fe508c0.png~tplv-uwbnlip3yd-webp.webp"
        />
      </a-avatar>
      调试预览
    </div>
    <a-divider style="margin: 0; margin-left: 10px" />
    <a-scrollbar
      ref="scrollbar"
      id="home"
      class="chat-list"
      style="width: 90%; overflow: auto; height: 70vh; margin: 0px auto;"
    >
      <div class="chat-item" v-for="sessionDetail in sessionDetailList">
        <a-comment
          v-if="sessionDetail.role === 'user'"
          avatar="https://p1-arco.byteimg.com/tos-cn-i-uwbnlip3yd/3ee5f13fb09879ecb5185e440cef6eb9.png~tplv-uwbnlip3yd-webp.webp"
        >
          <template #content>
            <div :class="{ light: theme === 'light' }" style="background-color: var(--color-bg-2);color: var(--color-text-3);border: none;padding: 16px;">{{
                sessionDetail.content
              }}</div>
          </template>
        </a-comment>
        <a-comment
          v-else-if="sessionDetail.role === 'assistant'"
          avatar="https://p1-arco.byteimg.com/tos-cn-i-uwbnlip3yd/9eeb1800d9b78349b24682c3518ac4a3.png~tplv-uwbnlip3yd-webp.webp"
        >
          <template #content>
            <a-card
              class="chat-item-answer"
              style="background-color: var(--color-bg-2);color: var(--color-text-3);border: none"
            >
              <div :class="{ light: theme === 'light' }">{{
                  sessionDetail.content
                }}</div>
            </a-card>
          </template>
        </a-comment>
        <a-comment
          v-else-if="sessionDetail.role === 'last'"
          avatar="https://p1-arco.byteimg.com/tos-cn-i-uwbnlip3yd/9eeb1800d9b78349b24682c3518ac4a3.png~tplv-uwbnlip3yd-webp.webp"
        >
          <template #content>
            <a-textarea
              readonly
              auto-size
              v-model="displayedText"
              class="chat-item-answer"
              style="background-color: var(--color-bg-2);color: var(--color-text-3);border: none"
            >
            </a-textarea>
          </template>
        </a-comment>
      </div>
    </a-scrollbar>
    <div class="bottom">
      <div class="input">
        <a-input
          v-model="inputMsg"
          @keydown.enter="sendMessage"
          placeholder="输入您想了解的内容，按Enter发送"
        >
          <template #suffix>
            <icon-send style="cursor: pointer" @click="sendMessage" />
          </template> </a-input
        ></div>
      <div class="text">内容由AI生成，仅供参考</div>
    </div>
  </div>
</template>

<script setup lang="ts">
import {
  IconMoreVertical,
  IconQuestionCircleFill,
  IconPoweroff,
  IconCommon,
  IconSend,
} from '@arco-design/web-vue/es/icon';
import img1 from '@/assets/images/u64.png';
import img2 from '@/assets/images/u69.png';
import img3 from '@/assets/images/u74.png';
import { ref, onMounted, computed, reactive, nextTick, watch } from 'vue';
import { useUserStore, useAppStore } from '@/store';
import {
  sessionListApi,
  deleteSessionApi,
  getSessionDetailsApi,
  chatApi,
} from '@/api/session';
import { Message } from '@arco-design/web-vue';
const userStore = useUserStore();
const appStore = useAppStore();
const theme = computed(() => {
  return appStore.theme;
});
const heightrg = ref('calc(100vh - 100px)');
const sessionList = ref([]); //会话列表
const sessionDetailList = ref([]); //根据会话id出来的会话详情
const activeSessionId = ref('');
const inputMsg = ref('');
const scrollbar = ref(null);

const currIndex = ref(0);
const displayedText = ref(''); // 正在显示的文字
let timer: number | null = null;
const streamStr = ref('');
const modalObj = reactive({ add: false });
//查询会话列表
const querySessionList = async () => {
  const { code, data } = await sessionListApi();
  if (code === 200) {
    sessionList.value = data;
    if (Array.isArray(data) && data.length > 0) {
      activeSessionId.value = data[1].id;
      const res = await getSessionDetailsApi(data[0].id);
      if (res.code === 200) {
        sessionDetailList.value = res.data.message;
        refreshScroll();
      }
    }
  } else {
    Message.warning('查询失败');
  }
};
//根据会话id删除会话
const deleteSession = async (session) => {
  const { code } = await deleteSessionApi([session.id]);
  if (code === 200) {
    Message.success('删除成功');
    querySessionList();
  }
};
// eslint-disable-next-line prettier/prettier
// 新增会话之后刷新会话列表
const addSession = () => {
  querySessionList();
};
// 初始化数据
const initData = () => {
  querySessionList();
};
// 获取登录信息
const userName = computed(() => {
  return userStore.name;
});
const avatar = computed(() => {
  return userStore.avatar;
});
const refreshScroll = () => {
  nextTick(() => {
    const container = document.getElementById('home');
    scrollbar.value.scrollTop(container.scrollHeight);
  });
};
// 根据会话id 查询会话详情
const querySessionDetail = async (session) => {
  activeSessionId.value = session.id;
  const { code, data } = await getSessionDetailsApi(session.id);
  if (code === 200) {
    sessionDetailList.value = data.message;
    refreshScroll(); //刷新滚动条位置
  }
};
const sendMessage = async () => {
  if (inputMsg.value) {
    const { code, data } = await chatApi({
      conversation_id: activeSessionId.value,
      messages: inputMsg.value,
    });
    const res = await getSessionDetailsApi(activeSessionId.value);
    if (res.code === 200) {
      sessionDetailList.value = res.data.message.map((item, index) => {
        if (index === res.data.message.length - 1) {
          item.role = 'last';
          displayedText.value = '';
          currIndex.value = 0;
          streamStr.value = item.content;
          startDisplayStr();
        }
        return item;
      });
      refreshScroll();
    }
    inputMsg.value = '';
  } else {
    Message.warning('消息不能为空');
  }
};
onMounted(() => {
  initData();
});
//文字动态输出
const startDisplayStr = () => {
  if (timer) {
    clearTimeout(timer!);
  }
  const res = streamStr.value;
  // 将数组中的字符串拼接起来
  if (currIndex.value < res.length) {
    displayedText.value += res[currIndex.value];
    currIndex.value++;
    setTimeout(startDisplayStr, 100);
  } else {
    clearTimeout(timer!);
    timer = null;
  }
};
watch(
  () => scrollbar.value,
  (newScroll, oldScroll) => {
    if (newScroll) {
      // 获取a-scroll的高度
      const height = newScroll.$el.offsetHeight;
      console.log('a-scroll height changed to:', height);
    }
  },
  { deep: true }
);
</script>

<style scoped lang="less">
.container {
  width: 100%;
  display: flex;
}
//.light {
//  color: white !important;
//}
.bottom {
  width: 100%;
  position: absolute;
  bottom: 40px;
  left: 0;

  .input {
    margin-left: 20%;
    width: 60%;
  }

  .text {
    margin-left: 40%;
    font-size: 12px;
    color: lightgrey;
    line-height: 40px;
  }
}
.chat-list {
  width: 90%;
  margin: 0px auto;
  .chat-item {
    margin-top: 20px;
    .chat-item-answer {
      color: white;
    }
  }
}
</style>
