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)
	GetLast(ctx context.Context) (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
	Rename(ctx context.Context, id string, title string) 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
	EstimatedUsage   bool
	SummaryMessageID string
	Cost             float64
	Todos            []Todo
	// Notice is a transient line about the live turn, such as "rate limited (429),
	// retrying in 12s". The workspace sets it while the runtime waits and clears it
	// when the response resumes; it is never stored.
	Notice    string
	CreatedAt int64
	UpdatedAt int64
}

type Todo struct {
	ID          string     `json:"id,omitempty"`
	Content     string     `json:"content"`
	Description string     `json:"description,omitempty"`
	Status      TodoStatus `json:"status"`
	ActiveForm  string     `json:"active_form"`
	Owner       string     `json:"owner,omitempty"`
}

type TodoStatus string