import { Address } from "../payTypes/types";
import { ChainId } from "./chain";

export const getAddress = (address: Address, chainId?: number): string => {
  return address[chainId as number] ? address[chainId as number] : address[ChainId.ETHEREUM];
};
export function normalizeHexAddress(address: string | Buffer): string {
  if (!address) {
    return "";
  }
  const addressString = typeof address === "object" && !("toLowerCase" in address) ? address.toString("hex") : address;
  if (typeof addressString === "string") {
    const noPrefix = addressString.replace(/^0x/, "");
    const even = noPrefix.length % 2 === 0 ? noPrefix : `0${noPrefix}`;
    return `0x${Buffer.from(even, "hex").toString("hex")}`;
  }
  return "";
}

export function sameEVMAddress(address1: string | Buffer | undefined | null, address2: string | Buffer | undefined | null): boolean {
  if (typeof address1 === "undefined" || typeof address2 === "undefined" || address1 === null || address2 === null) {
    return false;
  }
  return normalizeHexAddress(address1) === normalizeHexAddress(address2);
}

export const randomSecret = () => {
  // the first 4 bytes of the namehash of enslabs.biu
  const platformSource = "9923eb94";
  // v3
  const version = "00000003";
  const bytes = Buffer.allocUnsafe(24);
  return `0x${platformSource}${version}${window.crypto.getRandomValues(bytes).toString("hex")}`;
};

// 科学计数法转数值 - 处理 1e-7 这类精度问题
export function getFullNum(num: number) {
  // 处理非数字
  if (isNaN(num)) {
    return num;
  }
  // 处理不需要转换的数字
  const str = String(num);
  if (!/e/i.test(str)) {
    return num;
  }
  return Number(num)
    .toFixed(18)
    .replace(/\.?0+$/, "");
}

export function toFixed(number: number, pp: number) {
  let num: number | string = isNaN(number) || !number ? 0 : number;
  const p = isNaN(pp) || !pp ? 0 : pp;
  num = getFullNum(num);
  var n = (num + "").split("."); // eslint-disable-line
  var x = n.length > 1 ? n[1] : ""; // eslint-disable-line
  if (x.length > p) {
    x = x.substr(0, p);
  } else {
    x += Array(p - x.length + 1).join("0");
  }
  return n[0] + (x == "" ? "" : "." + x); // eslint-disable-line
}