Function latestSubagentAssistantMessage

coderd/x/chatd/subagent.go:1432–1471

(
	ctx context.Context,
	store database.Store,
	chatID uuid.UUID,
)

}

func latestSubagentAssistantMessage(
	ctx context.Context,
	store database.Store,
	chatID uuid.UUID,
) (string, error) {
	messages, err := store.GetChatMessagesByChatID(ctx, database.GetChatMessagesByChatIDParams{
		ChatID:  chatID,
		AfterID: 0,
	})
	if err != nil {
		return "", xerrors.Errorf("get chat messages: %w", err)
	}

	sort.Slice(messages, func(i, j int) bool {
		if messages[i].CreatedAt.Equal(messages[j].CreatedAt) {
			return messages[i].ID < messages[j].ID
		}
		return messages[i].CreatedAt.Before(messages[j].CreatedAt)
	})

	for i := len(messages) - 1; i >= 0; i-- {
		message := messages[i]
		if message.Role != database.ChatMessageRoleAssistant ||
			message.Visibility == database.ChatMessageVisibilityModel {
			continue
		}

		content, parseErr := chatprompt.ParseContent(message)
		if parseErr != nil {
			continue
		}
		text := strings.TrimSpace(contentBlocksToText(content))
		if text == "" {
			continue
		}
		return text, nil
	}

	return "", nil
}

// isSubagentDescendant reports whether targetChatID is a descendant
// of ancestorChatID by walking up the parent chain from the target.