git ssb

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const { blockIdentifiers, blockTypes } = require('./types');
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const { ignoreGroupInBalance, readGroup } = require('./group');
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const { readRecord } = require('./record');
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const { writeNumber } = require('./number');
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const GROUP_END_TYPE = 'group-end';
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const IGNORED = 'ignored';
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function getBlockType(line) {
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  const lineFirstChar = line[0];
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  switch (lineFirstChar) {
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    case blockIdentifiers.GROUP:
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      return blockTypes.GROUP;
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    case blockIdentifiers.EARNING:
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      return blockTypes.EARNING;
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    case blockIdentifiers.EXPENSE:
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      return blockTypes.EXPENSE;
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    case '':
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    case ' ':
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    case undefined:
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      return GROUP_END_TYPE;
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    default:
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      return IGNORED;
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  }
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}
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module.exports.readBlock = function readBlock(data) {
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  const lines = data.split('\n');
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  const groupsArr = [];
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  let currentGroup = null;
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  for (let index = 0; index < lines.length; index++) {
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    const line = lines[index].trim();
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    const blockType = getBlockType(line);
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    switch (blockType) {
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      case blockTypes.GROUP: // Create a group
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        currentGroup = readGroup(line);
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        continue;
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      case blockTypes.EARNING:
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      case blockTypes.EXPENSE: // Add record to current group
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        currentGroup.records.push(readRecord(line));
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        continue;
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      case GROUP_END_TYPE: // Push group to groups array
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        if (currentGroup) groupsArr.push({ ...currentGroup });
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        currentGroup = null;
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        continue;
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    }
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  }
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  return groupsArr;
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};
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module.exports.writeBlock = function writeBlock(balance, groupsArr) {
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  function writeGroups(groups) {
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    return groups.reduce((text, group, groupIndex) => {
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      return `${text}${groupIndex > 0 ? `
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` : ''}${group.toString()}
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${group.records.reduce((recordsText, record, recordIndex) => `${recordsText}${recordIndex > 0 ? `
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` : ''}${record.toString()}`, '')}
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${blockIdentifiers.TOTAL} ${writeNumber(group.total)}
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`;
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    }, '');
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  }
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  return `${blockIdentifiers.BALANCE} ${writeNumber(balance)}
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${writeGroups(groupsArr)}`;
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};
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