'use strict';

const util = require('./util');
const buildOptions = require('./util').buildOptions;
const x2j = require('./xmlstr2xmlnode');

//TODO: do it later
const convertToJsonString = function(node, options) {
  options = buildOptions(options, x2j.defaultOptions, x2j.props);

  options.indentBy = options.indentBy || '';
  return _cToJsonStr(node, options, 0);
};

const _cToJsonStr = function(node, options, level) {
  let jObj = '{';

  //traver through all the children
  const keys = Object.keys(node.child);

  for (let index = 0; index < keys.length; index++) {
    const tagname = keys[index];
    if (node.child[tagname] && node.child[tagname].length > 1) {
      jObj += '"' + tagname + '" : [ ';
      for (let tag in node.child[tagname]) {
        jObj += _cToJsonStr(node.child[tagname][tag], options) + ' , ';
      }
      jObj = jObj.substr(0, jObj.length - 1) + ' ] '; //remove extra comma in last
    } else {
      jObj += '"' + tagname + '" : ' + _cToJsonStr(node.child[tagname][0], options) + ' ,';
    }
  }
  util.merge(jObj, node.attrsMap);
  //add attrsMap as new children
  if (util.isEmptyObject(jObj)) {
    return util.isExist(node.val) ? node.val : '';
  } else {
    if (util.isExist(node.val)) {
      if (!(typeof node.val === 'string' && (node.val === '' || node.val === options.cdataPositionChar))) {
        jObj += '"' + options.textNodeName + '" : ' + stringval(node.val);
      }
    }
  }
  //add value
  if (jObj[jObj.length - 1] === ',') {
    jObj = jObj.substr(0, jObj.length - 2);
  }
  return jObj + '}';
};

function stringval(v) {
  if (v === true || v === false || !isNaN(v)) {
    return v;
  } else {
    return '"' + v + '"';
  }
}

function indentate(options, level) {
  return options.indentBy.repeat(level);
}

exports.convertToJsonString = convertToJsonString;