const { blockTypes, blockIdentifiers } = require('./types');

const IGNORE_GROUP_IN_BALANCE = '-';

function ignoreGroupInBalance(groupLine) {
  if (groupLine[0] !== blockIdentifiers.GROUP) {
    throw Error('Line is not a group: ' + groupLine);
  }

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

module.exports.readGroup = function readGroup(line) {
  const groupName = line.split(' ').slice(1).join(' ');
  const shouldIgnoreGroupInBalance = ignoreGroupInBalance(line);

  return {
    name: groupName,
    ignoreInBalance: shouldIgnoreGroupInBalance,
    records: [],
    total: 0,
    toString: () => `${blockIdentifiers.GROUP}${shouldIgnoreGroupInBalance ? IGNORE_GROUP_IN_BALANCE : ''} ${groupName}`
  };
};