func()

in gollm/gemini.go [247:287]

• 34 lines of code
• 3 McCabe index (conditional complexity)

func (c *GoogleAIClient) StartChat(systemPrompt string, model string) Chat {
	// Some values that are recommended by aistudio
	temperature := float32(1.0)
	topK := float32(40)
	topP := float32(0.95)
	maxOutputTokens := int32(8192)

	chat := &GeminiChat{
		model:  model,
		client: c.client,
		genConfig: &genai.GenerateContentConfig{
			SystemInstruction: &genai.Content{
				Parts: []*genai.Part{
					{Text: systemPrompt},
				},
			},
			Temperature:      &temperature,
			TopK:             &topK,
			TopP:             &topP,
			MaxOutputTokens:  maxOutputTokens,
			ResponseMIMEType: "text/plain",
		},
		history: []*genai.Content{},
	}

	if chat.model == "gemma-3-27b-it" {
		// Note: gemma-3-27b-it does not allow system prompt
		// xref: https://discuss.ai.google.dev/t/gemma-3-missing-features-despite-announcement/71692
		// TODO: remove this hack once gemma-3-27b-it supports system prompt
		chat.genConfig.SystemInstruction = nil
		chat.history = []*genai.Content{
			{Role: "user", Parts: []*genai.Part{{Text: systemPrompt}}},
		}
	}

	if c.responseSchema != nil {
		chat.genConfig.ResponseSchema = c.responseSchema
		chat.genConfig.ResponseMIMEType = "application/json"
	}
	return chat
}