import {
  toDataExtensionFieldType,
  type FieldDraft,
  type FieldManagement,
  type FieldPermissions,
  type NewFieldConfig,
  type NewFieldType,
} from '@wix/bex-core';

// Resolve the four FieldDraft permission booleans from a FieldPermissions bag,
// defaulting to read-for-apps / hidden-from-visitors when a slot is unset.
const resolvePermissions = (permissions?: FieldPermissions) => ({
  readApps: permissions?.installedApps?.defaultRead ?? true,
  writeApps: permissions?.installedApps?.defaultWrite ?? true,
  readUsers: permissions?.siteVisitors?.defaultRead ?? false,
  writeUsers: permissions?.siteVisitors?.defaultWrite ?? false,
});

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

/**
 * Turns a column's `new` mapping into the DataExtension `FieldDraft` used to both
 * create the field and pre-fill the editor. The precise type comes from a prior
 * edit (`config.deType`) or the default for the detected type; permissions come
 * from a prior edit or the source defaults. Key derives from the resolved column
 * (creation) or the name (editor).
 */
export const mappingToFieldDraft = (
  mapping: NewFieldMapping,
  key: string,
  name: string,
  fieldManagement: FieldManagement,
): FieldDraft => ({
  type: mapping.config?.deType ?? toDataExtensionFieldType(mapping.fieldType),
  key,
  name,
  containsPii: mapping.config?.isPii ?? false,
  ...resolvePermissions(
    mapping.config?.permissions ?? fieldManagement.permissions,
  ),
});