// Package chat provides chat template formatting for LLM prompts
package chat

import (
	"strings"
)

// FormatQwen formats messages for Qwen/ChatML style models
// Uses  role\ncontent  format
func FormatQwen(messages []Message, addGenerationPrompt bool) string {
	out, _ := (&Qwen3Renderer{}).Render(messages, Options{AddGenerationPrompt: addGenerationPrompt})
	return out
}

// FormatLlama formats messages for Llama 3 style models
func FormatLlama(messages []Message, addGenerationPrompt bool) string {
	out, _ := (&Qwen3Renderer{}).Render(messages, Options{AddGenerationPrompt: addGenerationPrompt})
	return out
}

// Format automatically selects format based on model type
func Format(messages []Message, modelType string, addGenerationPrompt bool) string {
	switch {
	case strings.Contains(strings.ToLower(modelType), "qwen"):
		return FormatQwen(messages, addGenerationPrompt)
	case strings.Contains(strings.ToLower(modelType), "llama"):
		return FormatLlama(messages, addGenerationPrompt)
	default:
		return FormatQwen(messages, addGenerationPrompt) // Default to ChatML
	}
}