import { Formatter } from "@ribajs/core";
import { ShopifyService } from "../services/shopify.service.js";

/**
 * Formats the price based on the shop's HTML with currency setting (if the format is not overwritten by passing a format parameter).
 * @param cents
 * @param format
 *
 * @see https://github.com/NathanPJF/deploybot-shopify/blob/master/assets/ajaxify.js.liquid
 * @see https://github.com/discolabs/cartjs/blob/master/src/utils.coffee
 * @see https://github.com/JumpLinkNetwork/shopify-productjs/blob/master/src/utilities.js
 * @see https://help.shopify.com/en/themes/liquid/filters/money-filters
 */
export const moneyFormatter: Formatter = {
  name: "money",
  read(cents: string | number, format?: string) {
    let value = "";
    const placeholderRegex = /\{\{\s*(\w+)\s*\}\}/;
    const formatString = format || this.moneyFormat;

    if (!formatString) {
      console.warn(`Can't parse format: ${formatString}`);
      return "0";
    }

    if (typeof cents === "string") {
      cents = cents.replace(".", "");
      // cents to float number
      cents = parseFloat(cents.toString());
    }

    const matchedFormat = formatString.match(placeholderRegex);

    if (matchedFormat !== null && matchedFormat.length >= 1) {
      switch (matchedFormat[1]) {
        case "amount":
          value = ShopifyService.formatMoneyWithDelimiters(cents, 2);
          break;
        case "amount_no_decimals":
          value = ShopifyService.formatMoneyWithDelimiters(cents, 0);
          break;
        case "amount_with_comma_separator":
          value = ShopifyService.formatMoneyWithDelimiters(cents, 2, ".", ",");
          break;
        case "amount_no_decimals_with_comma_separator":
          value = ShopifyService.formatMoneyWithDelimiters(cents, 0, ".", ",");
          break;
      }
      return formatString.replace(placeholderRegex, value);
    }

    console.warn(`Can't parse format: ${formatString}`);
    return "0";
  },
};