Method generateImage

outdated/gemini/gemini.ts:663–706

(params: {
    model: string;
    contents: any[];
  })

  }

  async generateImage(params: {
    model: string;
    contents: any[];
  }): Promise<{ text?: string; imageData?: Buffer }> {
    const url = `${this.baseUrl}/v1beta/models/${params.model}:generateContent`;
    
    const headers: Record<string, string> = {
      'x-goog-api-key': this.apiKey
    };

    const requestData = {
      contents: params.contents,
      generationConfig: {
        responseModalities: ['TEXT', 'IMAGE']
      }
    };

    const response = await HttpClient.makeRequest(url, {
      method: 'POST',
      headers,
      data: requestData
    });

    if (response.status !== 200 || response.data?.error) {
      const errorMsg = response.data?.error?.message || JSON.stringify(response.data);
      // 隐藏可能包含API密钥的敏感信息
      const sanitizedMsg = errorMsg.replace(/api_key:[A-Za-z0-9_-]+/g, 'api_key:***');
      throw new Error(`API Error: ${response.status} - ${sanitizedMsg}`);
    }

    const parts = response.data?.candidates?.[0]?.content?.parts || [];
    let text: string | undefined;
    let imageData: Buffer | undefined;

    for (const part of parts) {
      if (part?.text) {
        text = HttpClient.cleanResponseText(part.text);
      } else if (part?.inlineData?.data) {
        imageData = Buffer.from(part.inlineData.data, 'base64');
      }
    }

    return { text, imageData };
  }

  async generateTTS(params: {
    model: string;