export function mergeConfiguration()

in packages/graph-explorer/src/core/StateProvider/configuration.ts [75:130]
52 lines of code
10 McCabe index (conditional complexity)

export function mergeConfiguration(
  currentSchema: SchemaInference | null | undefined,
  currentConfig: RawConfiguration,
  userStyling: UserStyling
): RawConfiguration {
  const configVLabels = currentConfig.schema?.vertices.map(v => v.type) || [];
  const schemaVLabels = currentSchema?.vertices?.map(v => v.type) || [];
  const allVertexLabels = uniq([...configVLabels, ...schemaVLabels]);
  const mergedVertices = allVertexLabels
    .map(vLabel => {
      const configVertex = currentConfig.schema?.vertices.find(
        v => v.type === vLabel
      );
      const schemaVertex = currentSchema?.vertices.find(v => v.type === vLabel);
      const prefsVertex = userStyling.vertices?.find(v => v.type === vLabel);

      return mergeVertex(configVertex, schemaVertex, prefsVertex);
    })
    .toSorted((a, b) => a.type.localeCompare(b.type));

  const configELabels = currentConfig.schema?.edges.map(v => v.type) || [];
  const schemaELabels = currentSchema?.edges?.map(v => v.type) || [];
  const allEdgeLabels = uniq([...configELabels, ...schemaELabels]);
  const mergedEdges = allEdgeLabels.map(vLabel => {
    const configEdge = currentConfig.schema?.edges.find(v => v.type === vLabel);
    const schemaEdge = currentSchema?.edges.find(v => v.type === vLabel);
    const prefsEdge = userStyling.edges?.find(v => v.type === vLabel);
    return mergeEdge(configEdge, schemaEdge, prefsEdge);
  });

  return {
    id: currentConfig.id,
    displayLabel: currentConfig.displayLabel,
    connection: {
      ...(currentConfig.connection || {}),
      // Remove trailing slash
      url: currentConfig.connection?.url?.replace(/\/$/, "") || "",
      queryEngine: currentConfig.connection?.queryEngine || "gremlin",
      graphDbUrl:
        currentConfig.connection?.graphDbUrl?.replace(/\/$/, "") || "",
    },
    schema: {
      vertices: mergedVertices,
      edges: mergedEdges,
      lastUpdate: currentSchema?.lastUpdate,
      prefixes:
        currentConfig.connection?.queryEngine === "sparql"
          ? currentSchema?.prefixes
          : undefined,
      triedToSync: currentSchema?.triedToSync,
      lastSyncFail: currentSchema?.lastSyncFail,
      totalVertices: currentSchema?.totalVertices ?? 0,
      totalEdges: currentSchema?.totalEdges ?? 0,
    },
  };
}