Function titleInput

coderd/x/chatd/quickgen.go:528–571

titleInput returns the first user message text and whether title generation should proceed. It returns false when the chat already has assistant/tool replies, has more than one visible user message, or the current title doesn't look like a candidate for replacement.

(
	chat database.Chat,
	messages []database.ChatMessage,
)

// has assistant/tool replies, has more than one visible user message,
// or the current title doesn't look like a candidate for replacement.
func titleInput(
	chat database.Chat,
	messages []database.ChatMessage,
) (string, bool) {
	userCount := 0
	firstUserText := ""

	for _, message := range messages {
		if message.Visibility == database.ChatMessageVisibilityModel {
			continue
		}

		switch message.Role {
		case database.ChatMessageRoleAssistant, database.ChatMessageRoleTool:
			return "", false
		case database.ChatMessageRoleUser:
			userCount++
			if firstUserText == "" {
				parsed, err := chatprompt.ParseContent(message)
				if err != nil {
					return "", false
				}
				firstUserText = strings.TrimSpace(
					contentBlocksToText(parsed),
				)
			}
		}
	}

	if userCount != 1 || firstUserText == "" {
		return "", false
	}

	currentTitle := strings.TrimSpace(chat.Title)
	if currentTitle == "" {
		return firstUserText, true
	}

	if currentTitle != fallbackChatTitle(firstUserText) {
		return "", false
	}

	return firstUserText, true
}

func normalizeTitleOutput(title string) string {
	title = normalizeShortTextOutput(title)