Function createRelation

src/core/memory-graph.ts:155–181

(rootDir: string, sourceId: string, targetId: string, relation: RelationType, weight?: number, metadata?: Record<string, string>)

}

export async function createRelation(rootDir: string, sourceId: string, targetId: string, relation: RelationType, weight?: number, metadata?: Record<string, string>): Promise<MemoryEdge | null> {
  const graph = await loadGraph(rootDir);
  if (!graph.nodes[sourceId] || !graph.nodes[targetId]) return null;

  const duplicate = Object.values(graph.edges).find(e =>
    e.source === sourceId && e.target === targetId && e.relation === relation
  );
  if (duplicate) {
    duplicate.weight = weight ?? duplicate.weight;
    if (metadata) Object.assign(duplicate.metadata, metadata);
    scheduleSave(rootDir);
    return duplicate;
  }

  const edge: MemoryEdge = {
    id: generateId("me"),
    source: sourceId,
    target: targetId,
    relation,
    weight: weight ?? 1.0,
    createdAt: Date.now(),
    metadata: metadata ?? {},
  };
  graph.edges[edge.id] = edge;
  scheduleSave(rootDir);
  return edge;
}

export async function searchGraph(rootDir: string, query: string, maxDepth: number = 1, topK: number = 5, edgeFilter?: RelationType[]): Promise<GraphSearchResult> {
  const graph = await loadGraph(rootDir);