package port

import (
	"context"

	"github.com/bnema/dumber/internal/domain/entity"
)

// TabListProvider provides access to the current tab list state.
// Implemented by the UI layer to allow the snapshot service to read state.
type TabListProvider interface {
	// GetTabList returns the current tab list state.
	GetTabList() *entity.TabList
	// GetSessionID returns the current session ID.
	GetSessionID() entity.SessionID
}

// SessionSpawner spawns a new dumber instance for resurrection.
type SessionSpawner interface {
	// SpawnWithSession starts a new dumber instance to restore a session.
	SpawnWithSession(sessionID entity.SessionID) error
}

// SnapshotService manages debounced session-state snapshots.
type SnapshotService interface {
	// Start begins the snapshot service with the given context.
	Start(ctx context.Context)
	// Stop stops the service and saves the final state.
	Stop(ctx context.Context) error
	// SetReady marks the service as ready to save snapshots.
	// Call this after the session has been persisted to the database.
	SetReady()
	// MarkDirty signals that session state has changed and should be saved.
	MarkDirty()
	// SaveNow forces an immediate save (e.g. for shutdown).
	SaveNow(ctx context.Context) error
}