/*
 * guimap.utility.js
 * General Javascript utilities
 */

/* jslint
 */

/* global $, guimap */

guimap.util= ( function () {
  // ---------- MODULE SCOPE VARIABLES ----------
  var makeError, setConfigMap, getVarType, number_format, googleMaps2JTS;

  // ---------- UTILITY METHODS ----------

  // ---------- DOM METHODS ----------

  // ---------- EVENT HANDLERS ----------

  // ---------- PUBLIC METHODS ----------
  makeError = function ( name_text, msg_text, data ) {
    var error = new Error();
    error.name = name_text;
    error.message = msg_text;

    if (data) { error.data = data; }

    return error;
  }

  setConfigMap = function( arg_map ) {
    var
      input_map = arg_map.input_map,
      settable_map = arg_map.settable_map,
      config_map = arg_map.config_map,
      key_name, error;

    for (key_name in input_map) {
      if (input_map.hasOwnProperty(key_name)) {
        if (settable_map.hasOwnProperty(key_name)) {
          config_map[key_name] = input_map[key_name];
        } else {
          error = makeError('Bad Input',
            'Setting config key [' + key_name + '] is not supported'
          );
          throw error;
        }
      }
    }
  }

  // Begin method /getVarType/
  // Returns 'Object', 'Array', 'String', 'Number', 'Boolean', 'Undefined'
  getVarType = function ( data  ) {
    if ( data === undefined  ) { return 'Undefined'; }
    if ( data === null  ) { return 'Null'; }
    return {}.toString.call( data ).slice( 8, -1 );
  };

  number_format = function (number, decimals, dec_point, thousands_sep) {
    var n = !isFinite(+number) ? 0 : +number, 
        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
        s = '',
        toFixedFix = function (n, prec) {
          return n.toFixed(prec);
        };
        //toFixedFix = function (n, prec) {
        //    var k = Math.pow(10, prec);
        //    return '' + Math.round(n * k) / k;
        //};
    // Fix for IE parseFloat(0.55).toFixed(0) = 0;
    s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
    if (s[0].length > 3) {
        s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
    }
    if ((s[1] || '').length < prec) {
        s[1] = s[1] || '';
        s[1] += new Array(prec - s[1].length + 1).join('0');
    }
    return s.join(dec);
  };

  googleMaps2JTS = function (boundaries) {
      var coordinates = [];
      for (var i = 0; i < boundaries.getLength(); i++) {
          coordinates.push(new jsts.geom.Coordinate(
          boundaries.getAt(i).lat(), boundaries.getAt(i).lng()));
      }
      return coordinates;
  };

  return {
    makeError: makeError,
    setConfigMap: setConfigMap,
    getVarType: getVarType,
    number_format: number_format,
    googleMaps2JTS: googleMaps2JTS
  };
} ());