'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

module.exports = function serialize(mixedValue) {
  //  discuss at: http://locutus.io/php/serialize/
  // original by: Arpad Ray (mailto:arpad@php.net)
  // improved by: Dino
  // improved by: Le Torbi (http://www.letorbi.de/)
  // improved by: Kevin van Zonneveld (http://kvz.io/)
  // bugfixed by: Andrej Pavlovic
  // bugfixed by: Garagoth
  // bugfixed by: Russell Walker (http://www.nbill.co.uk/)
  // bugfixed by: Jamie Beck (http://www.terabit.ca/)
  // bugfixed by: Kevin van Zonneveld (http://kvz.io/)
  // bugfixed by: Ben (http://benblume.co.uk/)
  // bugfixed by: Codestar (http://codestarlive.com/)
  //    input by: DtTvB (http://dt.in.th/2008-09-16.string-length-in-bytes.html)
  //    input by: Martin (http://www.erlenwiese.de/)
  //      note 1: We feel the main purpose of this function should be to ease
  //      note 1: the transport of data between php & js
  //      note 1: Aiming for PHP-compatibility, we have to translate objects to arrays
  //   example 1: serialize(['Kevin', 'van', 'Zonneveld'])
  //   returns 1: 'a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}'
  //   example 2: serialize({firstName: 'Kevin', midName: 'van'})
  //   returns 2: 'a:2:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";}'

  var val, key, okey;
  var ktype = '';
  var vals = '';
  var count = 0;

  var _utf8Size = function _utf8Size(str) {
    var size = 0;
    var i = 0;
    var l = str.length;
    var code = '';
    for (i = 0; i < l; i++) {
      code = str.charCodeAt(i);
      if (code < 0x0080) {
        size += 1;
      } else if (code < 0x0800) {
        size += 2;
      } else {
        size += 3;
      }
    }
    return size;
  };

  var _getType = function _getType(inp) {
    var match;
    var key;
    var cons;
    var types;
    var type = typeof inp === 'undefined' ? 'undefined' : _typeof(inp);

    if (type === 'object' && !inp) {
      return 'null';
    }

    if (type === 'object') {
      if (!inp.constructor) {
        return 'object';
      }
      cons = inp.constructor.toString();
      match = cons.match(/(\w+)\(/);
      if (match) {
        cons = match[1].toLowerCase();
      }
      types = ['boolean', 'number', 'string', 'array'];
      for (key in types) {
        if (cons === types[key]) {
          type = types[key];
          break;
        }
      }
    }
    return type;
  };

  var type = _getType(mixedValue);

  switch (type) {
    case 'function':
      val = '';
      break;
    case 'boolean':
      val = 'b:' + (mixedValue ? '1' : '0');
      break;
    case 'number':
      val = (Math.round(mixedValue) === mixedValue ? 'i' : 'd') + ':' + mixedValue;
      break;
    case 'string':
      val = 's:' + _utf8Size(mixedValue) + ':"' + mixedValue + '"';
      break;
    case 'array':
    case 'object':
      val = 'a';
      /*
      if (type === 'object') {
        var objname = mixedValue.constructor.toString().match(/(\w+)\(\)/);
        if (objname === undefined) {
          return;
        }
        objname[1] = serialize(objname[1]);
        val = 'O' + objname[1].substring(1, objname[1].length - 1);
      }
      */

      for (key in mixedValue) {
        if (mixedValue.hasOwnProperty(key)) {
          ktype = _getType(mixedValue[key]);
          if (ktype === 'function') {
            continue;
          }

          okey = key.match(/^[0-9]+$/) ? parseInt(key, 10) : key;
          vals += serialize(okey) + serialize(mixedValue[key]);
          count++;
        }
      }
      val += ':' + count + ':{' + vals + '}';
      break;
    case 'undefined':
    default:
      // Fall-through
      // if the JS object has a property which contains a null value,
      // the string cannot be unserialized by PHP
      val = 'N';
      break;
  }
  if (type !== 'object' && type !== 'array') {
    val += ';';
  }

  return val;
};
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