package cli

import (
	"fmt"
	"strings"
)

// FriendlyRole returns a human friendly signifier for the message's role.
func (m *Message) FriendlyRole() string {
	var friendlyRole string
	switch m.Role {
	case "user":
		friendlyRole = "You"
	case "system":
		friendlyRole = "System"
	case "assistant":
		friendlyRole = "Assistant"
	default:
		friendlyRole = m.Role
	}
	return friendlyRole
}

func (c *Conversation) GenerateTitle() error {
	const header = "Generate a short title for the conversation below."
	prompt := fmt.Sprintf("%s\n\n---\n\n%s", header, c.FormatForExternalPrompting())

	messages := []Message{
		{
			Role:            "user",
			OriginalContent: prompt,
		},
	}

	model := "gpt-3.5-turbo" // use cheap model to generate title
	response, err := CreateChatCompletion(model, messages, 25)
	if err != nil {
		return err
	}

	c.Title = response
	return nil
}

func (c *Conversation) FormatForExternalPrompting() string {
	sb := strings.Builder{}
	messages, err := store.Messages(c)
	if err != nil {
		Fatal("Could not retrieve messages for conversation %v", c)
	}
	for _, message := range messages {
		sb.WriteString(fmt.Sprintf("<%s>\n", message.FriendlyRole()))
		sb.WriteString(fmt.Sprintf("\"\"\"\n%s\n\"\"\"\n\n", message.OriginalContent))
	}
	return sb.String()
}