/**
 * Memory Relationship Repository Interface.
 *
 * Contract for storing and querying typed relationships between memory facts.
 * Implementations may use Neo4j (MEMORY_RELATION edges) or other graph backends.
 */
import type { IMemoryRelationship, MemoryRelationType } from '../types/IMemoryRelationship';
/**
 * Options for querying memory relationships.
 */
export interface IRelationshipQueryOptions {
    /** Filter by relation type */
    readonly relationType?: MemoryRelationType;
    /** Direction of relationships to query */
    readonly direction?: 'outgoing' | 'incoming' | 'both';
}
/**
 * Repository for memory fact relationships.
 */
export interface IMemoryRelationshipRepository {
    /**
     * Create a relationship between two memory facts.
     *
     * @param groupId - Group ID for scoping
     * @param relationship - The relationship to create (without created_at)
     */
    createRelationship(groupId: string, relationship: Omit<IMemoryRelationship, 'created_at'>): Promise<void>;
    /**
     * Find relationships for a memory fact.
     *
     * @param groupId - Group ID for scoping
     * @param uuid - UUID of the fact to find relationships for
     * @param options - Optional query filters (type, direction)
     */
    findRelationships(groupId: string, uuid: string, options?: IRelationshipQueryOptions): Promise<readonly IMemoryRelationship[]>;
    /**
     * Remove a specific relationship between two facts.
     *
     * @param groupId - Group ID for scoping
     * @param sourceUuid - UUID of the source fact
     * @param targetUuid - UUID of the target fact
     * @param relationType - Type of relationship to remove
     */
    removeRelationship(groupId: string, sourceUuid: string, targetUuid: string, relationType: MemoryRelationType): Promise<void>;
}
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