/**
 * Manual formatter taken straight from https://github.com/umbrae/jsonlintdotcom
**/

/*jslint white: true, devel: true, onevar: true, browser: true, undef: true, nomen: true, regexp: true, plusplus: false, bitwise: true, newcap: true, maxerr: 50, indent: 4 */

/**
 * jsl.format - Provide json reformatting in a character-by-character approach, so that even invalid JSON may be reformatted (to the best of its ability).
 *
**/

function repeat(count: number, separator: string = '  ') {
  return new Array(count + 1).join(separator);
}

export function formatJson(json: any) {
  let newJson = '', indentLevel = 0, currentChar = null;

  for (let i = 0, len = json.length; i < len; i++) {
    currentChar = json.charAt(i);
    switch (currentChar) {
      case '{':
      case '[':
        newJson += `${currentChar}\n${repeat(indentLevel + 1)}`;
        indentLevel += 1;
        break;
      case '}':
      case ']':
        indentLevel -= 1;
        newJson += `\n${repeat(indentLevel)}${currentChar}`;
        break;
      case ',':
        newJson += ',\n' + repeat(indentLevel);
        break;
      case ':':
        newJson += ': ';
        break;
      default:
        newJson += currentChar;
        break;
    }
  }
  return newJson;
}