const IGNORE_GROUP_IN_BALANCE = '-';

function getValue(line) {
  const blockType = getBlockType(line);
  if (![blockTypes.EARNING, blockTypes.EXPENSE].includes(blockType)) {
    throw Error('Line does not have value format: ' + line);
  }

  const parts = line.trim().split(' ');

  if (parts.length < 2) {
    throw Error('Line not in right format: ' + line);
  }

  const value = parts[1];

  if (isNaN(value)) {
    throw Error('Wrong value to line: ' + line);
  }

  const num = Number(value);

  return blockType === blockTypes.EARNING ? num : num * -1;
}
module.exports.getValue = getValue;

function ignoreGroupInBalance(groupLine) {
  const blockType = getBlockType(groupLine);

  if (blockType !== blockTypes.GROUP) {
    throw Error('Line is not a group');
  }

  return groupLine[1] === IGNORE_GROUP_IN_BALANCE;
}
module.exports.ignoreGroupInBalance = ignoreGroupInBalance;