superchat.ts

import { stringify } from "../utils";
import { YTLiveChatPaidMessageRenderer, YTText } from "../interfaces/yt/chat";
import {
  SuperChat,
  SUPERCHAT_COLOR_MAP,
  SUPERCHAT_SIGNIFICANCE_MAP,
} from "../interfaces/misc";
import { parseColorCode } from "./utils";

const AMOUNT_REGEXP = /[\d.,]+/;

const SYMBOL_TO_TLS_MAP: Record<string, string> = {
  $: "USD",
  "£": "GBP",
  "¥": "JPY",
  "JP¥": "JPY",
  "₩": "KRW",
  "₪": "ILS",
  "€": "EUR",
  "₱": "PHP",
  "₹": "INR",
  A$: "AUD",
  CA$: "CAD",
  HK$: "HKD",
  MX$: "MXN",
  NT$: "TWD",
  NZ$: "NZD",
  R$: "BRL",
};

export function toTLS(symbolOrTls: string): string {
  return SYMBOL_TO_TLS_MAP[symbolOrTls] ?? symbolOrTls;
}

export function parseAmountText(purchaseAmountText: string) {
  const input = stringify(purchaseAmountText);
  const amountString = AMOUNT_REGEXP.exec(input)![0].replace(/,/g, "");

  const amount = parseFloat(amountString);
  const currency = toTLS(input.replace(AMOUNT_REGEXP, "").trim());
  return { amount, currency };
}

export function parseSuperChat(
  renderer: YTLiveChatPaidMessageRenderer
): SuperChat {
  const { amount, currency } = parseAmountText(
    renderer.purchaseAmountText.simpleText
  );

  const color =
    SUPERCHAT_COLOR_MAP[
      renderer.headerBackgroundColor.toString() as keyof typeof SUPERCHAT_COLOR_MAP
    ];
  const significance = SUPERCHAT_SIGNIFICANCE_MAP[color];

  return {
    amount,
    currency,
    color,
    significance,
    authorNameTextColor: parseColorCode(renderer.authorNameTextColor),
    timestampColor: parseColorCode(renderer.timestampColor),
    headerBackgroundColor: parseColorCode(renderer.headerBackgroundColor),
    headerTextColor: parseColorCode(renderer.headerTextColor),
    bodyBackgroundColor: parseColorCode(renderer.bodyBackgroundColor),
    bodyTextColor: parseColorCode(renderer.bodyTextColor),
  };
}