import { Address, BigDecimal, BigInt } from '@graphprotocol/graph-ts';
import { CryptoCurrency } from '../../../generated/schema';
import { CryptoCurrency as CryptoCurrencyContract } from '../../../generated/templates/CryptoCurrency/CryptoCurrency';
import { fetchAccount } from '../../fetch/account';
import { fetchAssetBalance } from '../../fetch/balance';
import { AssetType } from '../../utils/enums';

export function fetchCryptoCurrency(address: Address): CryptoCurrency {
  let cryptoCurrency = CryptoCurrency.load(address);

  if (!cryptoCurrency) {
    let endpoint = CryptoCurrencyContract.bind(address);
    let name = endpoint.try_name();
    let symbol = endpoint.try_symbol();
    let decimals = endpoint.try_decimals();

    const account = fetchAccount(address);

    cryptoCurrency = new CryptoCurrency(address);
    cryptoCurrency.type = AssetType.cryptocurrency;
    cryptoCurrency.asAccount = account.id;
    cryptoCurrency.name = name.reverted ? '' : name.value;
    cryptoCurrency.symbol = symbol.reverted ? '' : symbol.value;
    cryptoCurrency.decimals = decimals.reverted ? 18 : decimals.value;
    cryptoCurrency.totalSupplyExact = BigInt.zero();
    cryptoCurrency.totalSupply = BigDecimal.zero();
    cryptoCurrency.admins = [];
    cryptoCurrency.supplyManagers = [];
    cryptoCurrency.userManagers = [];
    cryptoCurrency.lastActivity = BigInt.zero();
    cryptoCurrency.creator = Address.zero();

    cryptoCurrency.save();

    account.asAsset = cryptoCurrency.id;
    account.save();
  }

  fetchAssetBalance(cryptoCurrency.id, cryptoCurrency.id, cryptoCurrency.decimals);

  return cryptoCurrency;
}