/**
 * @fileoverview Helpers for severity values (e.g. normalizing different types).
 * @author Bryan Mishkin
 */

'use strict';

/**
 * Convert severity value of different types to a string.
 * @param {string|number} severity severity value
 * @throws error if severity is invalid
 * @returns {string} severity string
 */
function normalizeSeverityToString(severity) {
  if ([2, '2', 'error'].includes(severity)) {
    return 'error';
  }
  if ([1, '1', 'warn'].includes(severity)) {
    return 'warn';
  }
  if ([0, '0', 'off'].includes(severity)) {
    return 'off';
  }
  throw new Error(`Invalid severity value: ${severity}`);
}

/**
 * Convert severity value of different types to a number.
 * @param {string|number} severity severity value
 * @throws error if severity is invalid
 * @returns {number} severity number
 */
function normalizeSeverityToNumber(severity) {
  if ([2, '2', 'error'].includes(severity)) {
    return 2;
  }
  if ([1, '1', 'warn'].includes(severity)) {
    return 1;
  }
  if ([0, '0', 'off'].includes(severity)) {
    return 0;
  }
  throw new Error(`Invalid severity value: ${severity}`);
}

module.exports = {
  normalizeSeverityToString,
  normalizeSeverityToNumber,
};