import type { NewFieldConfig, NewFieldType } from '@wix/bex-core';
import type { FieldSpec } from '../../types/SchemaConfig';
import { toPatternsFieldType } from './newFieldTypeMapping';

type NewFieldMapping = {
  fieldType: NewFieldType;
  displayName?: string;
  config?: NewFieldConfig;
};

// Builds the field draft the editor opens pre-filled from, for a column's
// pending new field. The reverse (editor output → mapping) lives in core's
// `ImportState.applyFieldEdit`.
export function buildFieldDraft(
  header: string,
  mapping: NewFieldMapping,
): FieldSpec {
  return {
    type: toPatternsFieldType(mapping.fieldType),
    displayName: mapping.displayName ?? header,
    ...(mapping.config?.isPii && { isPii: true }),
    ...(mapping.config?.helpText && { helpText: mapping.config.helpText }),
    ...(mapping.config?.validation && {
      validation: mapping.config.validation,
    }),
  } as FieldSpec;
}