import { ObjectMetadataInterface } from 'src/engine/metadata-modules/field-metadata/interfaces/object-metadata.interface';

import { FieldMetadataMap } from 'src/engine/metadata-modules/types/field-metadata-map';
import { ObjectMetadataItemWithFieldMaps } from 'src/engine/metadata-modules/types/object-metadata-item-with-field-maps';
import { ObjectMetadataMaps } from 'src/engine/metadata-modules/types/object-metadata-maps';

export const generateObjectMetadataMaps = (
  objectMetadataCollection: ObjectMetadataInterface[],
): ObjectMetadataMaps => {
  const objectMetadataMaps: ObjectMetadataMaps = {
    byId: {},
    byNameSingular: {},
    byNamePlural: {},
  };

  for (const objectMetadata of objectMetadataCollection) {
    const fieldsByIdMap: FieldMetadataMap = {};
    const fieldsByNameMap: FieldMetadataMap = {};

    for (const fieldMetadata of objectMetadata.fields) {
      fieldsByNameMap[fieldMetadata.name] = fieldMetadata;
      fieldsByIdMap[fieldMetadata.id] = fieldMetadata;
    }

    const processedObjectMetadata: ObjectMetadataItemWithFieldMaps = {
      ...objectMetadata,
      fieldsById: fieldsByIdMap,
      fieldsByName: fieldsByNameMap,
    };

    objectMetadataMaps.byId[objectMetadata.id] = processedObjectMetadata;
    objectMetadataMaps.byNameSingular[objectMetadata.nameSingular] =
      processedObjectMetadata;
    objectMetadataMaps.byNamePlural[objectMetadata.namePlural] =
      processedObjectMetadata;
  }

  return objectMetadataMaps;
};