Function POST

app/api/stream/route.ts:17–168

(req: NextRequest)

}

export async function POST(req: NextRequest) {
  try {
    // 解析请求体
    const body = await req.json();
    const conversationHistory: Message[] = body.conversationHistory || [];
    let settings: ModelSettings | null = body.settings || null;
    
    // 验证设置
    if (!settings) {
      // 尝试从请求头中获取旧版API密钥
      const legacyApiKey = req.headers.get("x-api-key");
      if (!legacyApiKey) {
        return new Response(
          JSON.stringify({ error: "缺少模型配置或API密钥" }),
          { 
            status: 401, 
            headers: { "Content-Type": "application/json" }
          }
        );
      }
      
      // 使用旧版API密钥
      settings = {
        provider: "openai",
        baseURL: "https://api.openai.com/v1",
        model: "gpt-4o",
        apiKey: legacyApiKey,
        temperature: 0.7,
      };
    }
    
    // 验证对话历史
    if (!Array.isArray(conversationHistory) || conversationHistory.length === 0) {
      return new Response(
        JSON.stringify({ error: "缺少有效的对话历史" }),
        { 
          status: 400, 
          headers: { "Content-Type": "application/json" }
        }
      );
    }
    
    // 根据提供商调整API路径
    let baseURL = settings.baseURL;
    
    // 确保baseURL不包含具体的API路径（如'/chat/completions'）
    if (settings.provider === "openai" && baseURL.includes("/chat/completions")) {
      baseURL = baseURL.replace("/chat/completions", "");
    } else if (settings.provider === "siliconflow" && baseURL.includes("/chat/completions")) {
      baseURL = baseURL.replace("/chat/completions", "");
    }
    
    console.log(`[Stream API] 使用API端点: ${baseURL}, 模型: ${settings.model}, 提供商: ${settings.provider}`);
    
    // 创建OpenAI客户端
    const openai = new OpenAI({
      apiKey: settings.apiKey,
      baseURL: baseURL,