session

type Service interface {
	pubsub.Subscriber[Session]
	Create(ctx context.Context, title string) (Session, error)
	CreateTitleSession(ctx context.Context, parentSessionID string) (Session, error)
	CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error)
	Get(ctx context.Context, id string) (Session, error)
	List(ctx context.Context) ([]Session, error)
	Save(ctx context.Context, session Session) (Session, error)
	UpdateTitleAndUsage(ctx context.Context, sessionID, title string, promptTokens, completionTokens int64, cost float64) error
	Delete(ctx context.Context, id string) error

	// Agent tool session management
	CreateAgentToolSessionID(messageID, toolCallID string) string
	ParseAgentToolSessionID(sessionID string) (messageID string, toolCallID string, ok bool)
	IsAgentToolSession(sessionID string) bool
}

type Session struct {
	ID               string
	ParentSessionID  string
	Title            string
	MessageCount     int64
	PromptTokens     int64
	CompletionTokens int64
	SummaryMessageID string
	Cost             float64
	Todos            []Todo
	CreatedAt        int64
	UpdatedAt        int64
}

type Todo struct {
	Content    string     `json:"content"`
	Status     TodoStatus `json:"status"`
	ActiveForm string     `json:"active_form"`
}

type TodoStatus string