import type { Language } from '../language/Language';
import type { DiscountType } from './DiscountType';
import { languageFromJson, languageToJson } from '../language/Language';
import { discountTypeFromJson, discountTypeToJson } from './DiscountType';

export class DiscountItem {
  title?: Map<Language, string>;
  type?: DiscountType;
  value?: string;

  constructor(
    title?: Map<Language, string>,
    type?: DiscountType,
    value?: string
  ) {
    this.title = title;
    this.type = type;
    this.value = value;
  }
}

export function discountItemFromJson(json: {
  [key: string]: any;
}): DiscountItem {
  const titleMap = json.title
    ? new Map(
        Object.entries(json.title).map(([key, value]) => [
          languageFromJson(key),
          value as string,
        ])
      )
    : undefined;

  return new DiscountItem(
    titleMap,
    json.type ? discountTypeFromJson(json.type) : undefined,
    json.value
  );
}

export function discountItemToJson(discountItem: DiscountItem): {
  [key: string]: any;
} {
  const titleMap: { [key: string]: any } = {};
  discountItem.title?.forEach((value, key) => {
    titleMap[languageToJson(key)] = value;
  });

  return {
    title: titleMap,
    type: discountItem.type ? discountTypeToJson(discountItem.type) : undefined,
    value: discountItem.value,
  };
}