Function suggestNewTopic

src/renderer/src/services/titleService.ts:267–316

(
  contextMessages: ChatMessage[],
  currentMessage: ChatMessage
)

 * @param currentMessage 当前消息
 */
export async function suggestNewTopic(
  contextMessages: ChatMessage[],
  currentMessage: ChatMessage
): Promise<TopicSuggestionResult> {
  const { llmConfig, modelConfig } = getDefaultConfigs()

  if (!llmConfig) {
    return { shouldCreateTopic: false, success: false, error: '未配置 LLM' }
  }

  try {
    // 构建上下文
    const contextStr = contextMessages
      .slice(-5) // 最近5条
      .map((m) => `[${m.role}]: ${truncateContent(m.content, 200)}`)
      .join('\n')

    const prompt = TOPIC_SUGGESTION_PROMPT.replace('{context}', contextStr).replace(
      '{currentMessage}',
      `[${currentMessage.role}]: ${truncateContent(currentMessage.content, 300)}`
    )

    const result = await generateWithAI(prompt, llmConfig, modelConfig || undefined)

    // 解析结果
    const cleanResult = result.trim()
    if (cleanResult === '继续' || cleanResult.toLowerCase() === 'continue') {
      return { shouldCreateTopic: false, success: true }
    }

    // 清理 topic 名称
    let topicName = cleanResult
      .replace(/^["'""]|["'""]$/g, '')
      .replace(/^(新话题|话题|主题)[：:]\s*/i, '')
      .trim()

    if (topicName.length > 15) {
      topicName = topicName.slice(0, 15)
    }

    return {
      shouldCreateTopic: true,
      topicName,
      success: true
    }
  } catch (error) {
    console.error('Failed to suggest topic:', error)
    return { shouldCreateTopic: false, success: false, error: String(error) }
  }
}

/**
 * 批量为消息生成标题（用于整理历史消息）