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

module.exports.readRecord = function readRecord(line) {
  const [symbol, value, ...nameArr] = line.split(' ');

  if (![blockIdentifiers.EARNING, blockIdentifiers.EXPENSE].includes(symbol)) {
    throw Error(`Record not in right format, expected first chat to be '+' or '-': ${line}`);
  }

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

  const isEarning = symbol === '+';
  const num = Number(value);
  const name = nameArr.join(' ');

  return {
    name,
    symbol,
    value: isEarning ? num : -num,
    toString: () => `${symbol} ${writeNumber(num)} ${name}`,
  };
};