441 lines
12 KiB
Vue
441 lines
12 KiB
Vue
<template>
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<div class="chat-container" :ref="el => chatContainerRef = el">
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<el-scrollbar ref="scrollbarRef" :height="'90%'" @scroll="handleScroll">
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<div class="message-list" :ref="el => messageListRef = el">
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<div v-for="(message, index) in tabStorage.messages" :key="index"
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:class="['message-item', message.role]">
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<div class="message-avatar" v-if="message.role === 'assistant'">
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<span class="iconfont icon-chat"></span>
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</div>
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<!-- 用户输入的部分，不需要渲染成 markdown -->
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<div class="message-content" v-if="message.role === 'user'">
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<div class="message-role"></div>
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<div class="message-text">
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<span>{{ message.content }}</span>
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</div>
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</div>
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<!-- 助手返回的部分 -->
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<div class="message-content" v-else-if="message.role === 'assistant'">
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<div class="message-role">Agent</div>
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<div class="message-text">
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<div v-html="markdownToHtml(message.content)"></div>
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<span class="iconfont icon-copy" @click="handleCopy(message.content)"></span>
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</div>
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</div>
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<!-- 待定 -->
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<div class="message-content" v-else>
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<div class="message-role">Tool</div>
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<div class="message-text">
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<span>Tool</span>
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</div>
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</div>
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</div>
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<!-- 正在加载的部分实时解析 markdown -->
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<div v-if="isLoading" class="message-item assistant">
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<div class="message-avatar">
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<span class="iconfont icon-chat"></span>
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</div>
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<div class="message-content">
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<div class="message-role">Agent</div>
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<div class="message-text">
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<span v-html="waitingMarkdownToHtml(streamingContent)"></span>
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</div>
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</div>
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</div>
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</div>
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</el-scrollbar>
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<el-footer class="chat-footer" ref="footerRef">
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<div class="input-area">
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<div class="input-wrapper">
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<Setting :tabId="tabId" />
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<el-input v-model="userInput" type="textarea" :rows="inputHeightLines" :maxlength="2000"
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placeholder="输入消息..." @keydown.enter="handleKeydown" resize="none" class="chat-input" />
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<el-button type="primary" @click="isLoading ? handleAbort() : handleSend()" class="send-button">
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<span v-if="!isLoading" class="iconfont icon-send"></span>
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<span v-else class="iconfont icon-stop"></span>
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</el-button>
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</div>
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</div>
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</el-footer>
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</div>
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</template>
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<script setup lang="ts">
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import { ref, onMounted, defineComponent, defineProps, onUnmounted, computed, nextTick, watch } from 'vue';
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import { useI18n } from 'vue-i18n';
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import { useMessageBridge } from "@/api/message-bridge";
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import { ElMessage, ScrollbarInstance } from 'element-plus';
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import { tabs } from '../panel';
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import { ChatMessage, ChatStorage } from './chat';
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import Setting from './setting.vue';
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import { llmManager, llms } from '@/views/setting/llm';
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// 引入 markdown.ts 中的函数
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import { markdownToHtml, copyToClipboard } from './markdown';
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defineComponent({ name: 'chat' });
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const { t } = useI18n();
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function waitingMarkdownToHtml(content: string) {
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if (content) {
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return markdownToHtml(content);
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}
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return '<span class="typing-cursor">|</span>';
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}
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const props = defineProps({
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tabId: {
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type: Number,
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required: true
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}
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});
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const tab = tabs.content[props.tabId];
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const tabStorage = tab.storage as ChatStorage;
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const bridge = useMessageBridge();
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const userInput = ref('');
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const inputHeightLines = computed(() => {
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const currentLines = userInput.value.split('\n').length;
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return Math.min(12, Math.max(5, currentLines));
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});
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// 创建 messages
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if (!tabStorage.messages) {
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tabStorage.messages = [] as ChatMessage[];
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}
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const isLoading = ref(false);
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const streamingContent = ref('');
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const chatContainerRef = ref<any>(null);
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const messageListRef = ref<any>(null);
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const footerRef = ref<HTMLElement>();
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const scrollHeight = ref('500px');
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const updateScrollHeight = () => {
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if (chatContainerRef.value && footerRef.value) {
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const containerHeight = chatContainerRef.value.clientHeight;
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const footerHeight = footerRef.value.clientHeight;
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scrollHeight.value = `${containerHeight - footerHeight}px`;
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}
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};
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const handleKeydown = (event: KeyboardEvent) => {
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if (event.key === 'Enter' && !event.shiftKey) {
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event.preventDefault();
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handleSend();
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}
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// Shift+Enter 允许自然换行
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};
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const handleCopy = async (text: string) => {
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try {
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await copyToClipboard(text);
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ElMessage.success('复制成功');
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} catch (error) {
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ElMessage.error('复制失败: ' + error);
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}
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};
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const autoScroll = ref(true);
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const scrollbarRef = ref<ScrollbarInstance>();
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// 修改后的 handleScroll 方法
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const handleScroll = ({ scrollTop, scrollHeight, clientHeight }: {
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scrollTop: number,
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scrollHeight: number,
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clientHeight: number
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}) => {
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// 如果用户滚动到接近底部(留10px缓冲)，则恢复自动滚动
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autoScroll.value = scrollTop + clientHeight >= scrollHeight - 10;
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};
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// 修改 scrollToBottom 方法
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const scrollToBottom = async () => {
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if (!scrollbarRef.value || !messageListRef.value) return;
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await nextTick(); // 等待 DOM 更新
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try {
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const container = scrollbarRef.value.wrapRef;
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if (container) {
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container.scrollTop = container.scrollHeight;
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}
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} catch (error) {
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console.error('Scroll to bottom failed:', error);
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}
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};
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// 添加对 streamingContent 的监听
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watch(streamingContent, () => {
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if (autoScroll.value) {
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scrollToBottom();
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}
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}, { deep: true });
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const handleSend = () => {
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if (!userInput.value.trim() || isLoading.value) return;
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autoScroll.value = true; // 发送新消息时恢复自动滚动
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const userMessage = userInput.value.trim();
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tabStorage.messages.push({ role: 'user', content: userMessage });
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// 后端接受属性 baseURL, apiKey, model, messages, temperature
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const baseURL = llms[llmManager.currentModelIndex].baseUrl;
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const apiKey = llms[llmManager.currentModelIndex].userToken;
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const model = llms[llmManager.currentModelIndex].userModel;
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const temperature = tabStorage.settings.temperature;
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const userMessages = [];
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if (tabStorage.settings.systemPrompt) {
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userMessages.push({
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role: 'system',
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content: tabStorage.settings.systemPrompt
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});
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}
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// 如果超出了 tabStorage.settings.contextLength, 则删除最早的消息
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const loadMessages = tabStorage.messages.slice(-tabStorage.settings.contextLength);
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userMessages.push(...loadMessages);
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const chatData = {
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baseURL,
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apiKey,
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model,
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temperature,
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messages: userMessages,
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};
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isLoading.value = true;
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streamingContent.value = '';
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const chunkHandler = bridge.addCommandListener('llm/chat/completions/chunk', data => {
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if (data.code !== 200) {
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handleError(data.msg || '请求模型服务时发生错误');
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return;
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}
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const { content } = data.msg;
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if (content) {
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streamingContent.value += content;
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scrollToBottom(); // 内容更新时滚动到底部
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}
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}, { once: false });
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bridge.addCommandListener('llm/chat/completions/done', data => {
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if (data.code !== 200) {
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handleError(data.msg || '模型服务处理完成但返回错误');
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return;
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}
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if (streamingContent.value) {
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// 加入消息列表
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tabStorage.messages.push({
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role: 'assistant',
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content: streamingContent.value
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});
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streamingContent.value = '';
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}
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isLoading.value = false;
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chunkHandler();
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}, { once: true });
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bridge.postMessage({
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command: 'llm/chat/completions',
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data: chatData
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});
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userInput.value = '';
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};
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const handleAbort = () => {
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bridge.postMessage({
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command: 'llm/chat/completions/abort', // 假设后端有对应的中止命令
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data: {}
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});
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isLoading.value = false;
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streamingContent.value = '';
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ElMessage.info('请求已中止');
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};
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const handleError = (errorMsg: string) => {
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ElMessage.error(errorMsg);
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tabStorage.messages.push({
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role: 'assistant',
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content: `错误: ${errorMsg}`
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});
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streamingContent.value = '';
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isLoading.value = false;
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};
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onMounted(() => {
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updateScrollHeight();
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window.addEventListener('resize', updateScrollHeight);
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scrollToBottom();
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});
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onUnmounted(() => {
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window.removeEventListener('resize', updateScrollHeight);
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});
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</script>
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<style scoped>
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.chat-container {
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height: 100%;
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display: flex;
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position: relative;
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flex-direction: column;
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}
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.message-list {
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max-width: 800px;
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margin: 0 auto;
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padding: 16px;
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padding-bottom: 100px;
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}
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.message-item {
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display: flex;
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margin-bottom: 16px;
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}
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.message-avatar {
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margin-right: 12px;
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}
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.message-content {
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flex: 1;
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width: 100%;
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}
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.message-role {
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font-weight: bold;
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margin-bottom: 4px;
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color: var(--el-text-color-regular);
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}
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.message-text {
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line-height: 1.6;
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}
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.user .message-text {
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margin-top: 10px;
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margin-bottom: 10px;
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}
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.user .message-text>span {
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border-radius: .9em;
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background-color: var(--main-light-color);
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padding: 10px 15px;
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}
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.user {
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flex-direction: row-reverse;
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text-align: right;
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}
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.user .message-avatar {
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margin-right: 0;
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margin-left: 12px;
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}
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.user .message-content {
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align-items: flex-end;
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}
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.assistant {
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text-align: left;
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margin-top: 30px;
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}
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.chat-footer {
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padding: 16px;
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border-top: 1px solid var(--el-border-color);
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flex-shrink: 0;
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position: absolute;
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height: fit-content;
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bottom: 0;
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width: 100%;
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}
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.input-area {
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max-width: 800px;
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margin: 0 auto;
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position: relative;
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}
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.input-wrapper {
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position: relative;
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}
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.chat-input {
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padding-right: 80px;
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}
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.chat-input textarea {
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border-radius: .5em;
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}
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.send-button {
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position: absolute !important;
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right: 8px !important;
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bottom: 8px !important;
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height: auto;
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padding: 8px 12px;
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font-size: 20px;
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border-radius: .5em;
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}
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:deep(.chat-settings) {
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position: absolute;
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left: 0;
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bottom: 0px;
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z-index: 1;
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}
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.typing-cursor {
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animation: blink 1s infinite;
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}
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@keyframes blink {
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0%,
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100% {
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opacity: 1;
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}
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50% {
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opacity: 0;
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}
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}
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</style>
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<style scoped>
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/* 原有样式保持不变 */
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/* 新增样式来减小行距 */
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.message-text p,
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.message-text h3,
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.message-text ol,
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.message-text ul {
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margin-top: 0.5em;
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margin-bottom: 0.5em;
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line-height: 1.4;
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/* 可以根据需要调整行高 */
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}
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.message-text ol li,
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.message-text ul li {
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margin-top: 0.2em;
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margin-bottom: 0.2em;
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}
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</style> |