Function resolveAgentChat

coderd/workspaceagents.go:2733–2772

resolveAgentChat finds the target chat from either an explicit ID or auto-detection via the agent's active chats.

(
	ctx context.Context,
	db database.Store,
	agentID uuid.UUID,
	workspaceOwnerID uuid.UUID,
	explicitChatID uuid.UUID,
)

// resolveAgentChat finds the target chat from either an explicit ID
// or auto-detection via the agent's active chats.
func resolveAgentChat(
	ctx context.Context,
	db database.Store,
	agentID uuid.UUID,
	workspaceOwnerID uuid.UUID,
	explicitChatID uuid.UUID,
) (database.Chat, error) {
	if explicitChatID == uuid.Nil {
		chats, err := db.GetActiveChatsByAgentID(ctx, agentID)
		if err != nil {
			return database.Chat{}, xerrors.Errorf("list active chats: %w", err)
		}
		ownerChats := make([]database.Chat, 0, len(chats))
		for _, chat := range chats {
			if chat.OwnerID != workspaceOwnerID {
				continue
			}
			ownerChats = append(ownerChats, chat)
		}
		return resolveDefaultAgentChat(ownerChats)
	}

	chat, err := db.GetChatByID(ctx, explicitChatID)
	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			return database.Chat{}, errChatNotFound
		}
		return database.Chat{}, xerrors.Errorf("get chat by id: %w", err)
	}
	if !chat.AgentID.Valid || chat.AgentID.UUID != agentID {
		return database.Chat{}, errChatDoesNotBelongToAgent
	}
	if chat.OwnerID != workspaceOwnerID {
		return database.Chat{}, errChatDoesNotBelongToWorkspaceOwner
	}
	if !isActiveAgentChat(chat) {
		return database.Chat{}, errChatNotActive
	}
	return chat, nil
}

func isActiveAgentChat(chat database.Chat) bool {
	if chat.Archived {