package port

import (
	"context"

	"git.threesix.ai/jordan/slack5-1770574304/services/preferences-api/internal/domain"
)

// PreferenceRepository defines the interface for user preference persistence.
// Implementations may use databases, in-memory storage, or external services.
type PreferenceRepository interface {
	// Get returns the preferences for a user by ID.
	// Returns nil, nil when no preferences exist (service applies defaults).
	Get(ctx context.Context, userID string) (*domain.UserPreferences, error)

	// Upsert creates or replaces the preferences for a user.
	Upsert(ctx context.Context, prefs *domain.UserPreferences) error
}