import { BaseCurrency, type SerializableErc20TokenType } from './base-currency.js';

/**
 * The address of the native token on the Ethereum chain
 */
export const NATIVE_TOKEN_ADDRESS = '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee' as const;

type NativeCurrencyParamsType = {
  chainId: number;
  decimals: number;
  symbol: string;
  name: string;
};

/**
 * Represents the native currency of the chain on which it resides, e.g.
 */
export abstract class NativeCurrency extends BaseCurrency {
  public readonly address = NATIVE_TOKEN_ADDRESS;
  public readonly isNative: true = true as const;
  public readonly isToken: false = false as const;

  constructor(params: NativeCurrencyParamsType) {
    super(params);
  }
}

export function nativeCurrencyToSerializableErc20TokenType(currency: NativeCurrency): SerializableErc20TokenType {
  return {
    address: currency.address,
    chainId: currency.chainId,
    decimals: currency.decimals,
    symbol: currency.symbol,
    name: currency.name,
  };
}