zsjz-ai/ai-frontend/packages/cms/views/components/ChatMessages.vue

<script setup lang="ts">
  import { ref, nextTick, watch, computed } from 'vue';
  import { Message, Theme } from '../../api/dto';
  import { StreamMarkdown } from 'streamdown-vue';

  interface Props {
    messages: Message[];
    isLoading: boolean;
    theme?: Theme;
  }

  const props = defineProps<Props>();
  const chatContainer = ref<HTMLElement>();

  const isDark = computed(() => props.theme === 'dark');
  const shikiTheme = computed(() => (isDark.value ? 'github-dark' : 'github-light'));

  async function scrollToBottom() {
    await nextTick();
    if (chatContainer.value) {
      chatContainer.value.scrollTop = chatContainer.value.scrollHeight;
    }
  }

  watch(
    () => props.messages,
    async () => {
      await scrollToBottom();
    },
    { deep: true },
  );

  function getAvatar(role: string): string {
    const avatars: Record<string, string> = {
      user: '👤',
      assistant: '🤖',
      reason: '💭',
      action: '⚡',
      error: '❌',
    };
    return avatars[role] || '🤖';
  }

  function getRoleLabel(role: string): string {
    const labels: Record<string, string> = {
      user: '用户',
      assistant: '猎影助手',
      reason: '思考',
      action: '执行',
      error: '错误',
    };
    return labels[role] || role;
  }

  defineExpose({
    scrollToBottom,
  });
</script>

<template>
  <div class="chat-messages" ref="chatContainer">
    <div v-for="message in props.messages" :key="message.id" class="message" :class="message.role">
      <div class="message-content">
        <div v-if="message.role !== 'reason'" class="message-avatar">
          {{ getAvatar(message.role) }}
        </div>
        <div class="message-body">
          <div class="message-header">
            <span class="message-role">{{ getRoleLabel(message.role) }}</span>
          </div>
          <div class="message-text">
            <div v-for="(item, index) in message.contents" :key="index" class="content-item">
              <StreamMarkdown :shiki-theme="shikiTheme" :content="item.text" />
            </div>
          </div>
          <div class="message-time">{{ message.timestamps }}</div>
        </div>
      </div>
    </div>

    <!-- 加载指示器 -->
    <div v-if="props.isLoading" class="message assistant loading">
      <div class="message-content">
        <div class="message-avatar">🤖</div>
        <div class="message-body">
          <div class="loading-indicator">
            <span></span>
            <span></span>
            <span></span>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<style scoped lang="less">
  .chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background-color: #fff;
  }

  .message {
    display: flex;
    animation: fadeIn 0.3s ease-in;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .message.user {
    justify-content: flex-end;
  }

  .message.reason {
    border-left: 3px solid #6c757d;
    padding-left: 8px;
  }

  .message.action {
    border-left: 3px solid #28a745;
    padding-left: 8px;
  }

  .message.error {
    border-left: 3px solid #dc3545;
    padding-left: 8px;
  }

  .message-header {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 4px;
  }

  .message-role {
    font-size: 11px;
    font-weight: 600;
    color: @cb-text-secondary;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
    background-color: @cb-vscode-input-background;
  }

  .message-text {
    padding: 0;
    border-radius: 0;
    background-color: transparent;
    line-height: 1.6;
    word-wrap: break-word;
    transition:
      background-color 0.3s,
      color 0.3s;
    max-width: 800px;
    overflow-x: auto;
  }

  .message.user .message-text {
    background-color: @cb-accent;
    color: white;
    padding: 12px 16px;
    border-radius: 12px;
  }

  .message.assistant .message-text {
    background-color: @cb-vscode-input-background;
    padding: 12px 16px;
    border-radius: 12px;
  }

  /* 内容项样式 */
  .content-item {
    margin-bottom: 8px;
  }

  .content-item:last-child {
    margin-bottom: 0;
  }

  .content-label {
    font-size: 11px;
    font-weight: 600;
    color: @cb-text-secondary;
    margin-bottom: 4px;
    display: inline-block;
  }

  .content-tool {
    font-size: 11px;
    color: #28a745;
    font-weight: 500;
    margin-left: 8px;
  }

  .content-text {
    padding: 4px 0;
    white-space: pre-wrap;
  }

  .message.user .content-text {
    padding: 0;
  }

  .content-reason {
    color: @cb-text-secondary;
    padding: 8px;
    background-color: rgba(108, 117, 125, 0.1);
    border-radius: 6px;
    margin-bottom: 8px;
  }

  .content-action {
    color: #28a745;
    padding: 8px;
    background-color: rgba(40, 167, 69, 0.1);
    border-radius: 6px;
    margin-bottom: 8px;
  }

  .content-error {
    color: #dc3545;
    padding: 8px;
    background-color: rgba(220, 53, 69, 0.1);
    border-radius: 6px;
    margin-bottom: 8px;
  }

  .content-plain .content-text {
    padding: 4px 0;
  }

  .message-args {
    margin-top: 8px;
    padding: 8px;
    background-color: @cb-vscode-sideBar-background;
    border-radius: 6px;
    font-size: 12px;
    overflow-x: auto;
  }

  .message-args pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: @cb-text-secondary;
  }

  .message-content {
    display: flex;
    gap: 12px;
    width: 50%;
  }

  .message.user .message-content {
    flex-direction: row-reverse;
  }

  .message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: @cb-vscode-input-background;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    transition: background-color 0.3s;
  }

  .message-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .message.user .message-body {
    align-items: flex-end;
  }

  .message-time {
    font-size: 11px;
    color: @cb-text-secondary;
    padding: 0 4px;
  }

  .message.loading {
    opacity: 0.7;
  }

  .loading-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
  }

  .loading-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: @cb-text-secondary;
    animation: pulse 1.4s ease-in-out infinite;
  }

  .loading-indicator span:nth-child(1) {
    animation-delay: 0s;
  }

  .loading-indicator span:nth-child(2) {
    animation-delay: 0.2s;
  }

  .loading-indicator span:nth-child(3) {
    animation-delay: 0.4s;
  }

  @keyframes pulse {
    0%,
    80%,
    100% {
      opacity: 0.3;
    }
    40% {
      opacity: 1;
    }
  }
</style>