define(["dojox/main", "dojo/_base/lang", "dojo/_base/array", "dojo/date", "dojo/i18n", "dojo/regexp", "dojo/string", "./Date", "dojo/i18n!dojo/cldr/nls/islamic"],
       function (dojox, lang, arr, dd, i18n, regexp, string, IDate, bundle) {

           var ilocale = lang.getObject("date.umalqura.locale", true, dojox);

           // Format a pattern without literals
           function formatPattern(dateObject, bundle, locale, fullYear, pattern) {

               return pattern.replace(/([a-z])\1*/ig, function (match) {
                   var s, pad;
                   var c = match.charAt(0);
                   var l = match.length;
                   var widthList = ["abbr", "wide", "narrow"];

                   switch (c) {
                       case 'G':
                           s = bundle["eraAbbr"][0];
                           break;
                       case 'y':
                           s = String(dateObject.getFullYear());
                           break;
                       case 'M':
                           var m = dateObject.getMonth();
                           if (l < 3) {
                               s = m + 1; pad = true;
                           } else {
                               var propM = ["months", "format", widthList[l - 3]].join("-");
                               s = bundle[propM][m];
                           }
                           break;
                       case 'd':
                           s = dateObject.getDate(true); pad = true;
                           break;
                       case 'E':
                           var d = dateObject.getDay();
                           if (l < 3) {
                               s = d + 1; pad = true;
                           } else {
                               var propD = ["days", "format", widthList[l - 3]].join("-");
                               s = bundle[propD][d];
                           }
                           break;
                       case 'a':
                           var timePeriod = (dateObject.getHours() < 12) ? 'am' : 'pm';
                           s = bundle['dayPeriods-format-wide-' + timePeriod];
                           break;
                       case 'h':
                       case 'H':
                       case 'K':
                       case 'k':
                           var h = dateObject.getHours();
                           switch (c) {
                               case 'h': // 1-12
                                   s = (h % 12) || 12;
                                   break;
                               case 'H': // 0-23
                                   s = h;
                                   break;
                               case 'K': // 0-11
                                   s = (h % 12);
                                   break;
                               case 'k': // 1-24
                                   s = h || 24;
                                   break;
                           }
                           pad = true;
                           break;
                       case 'm':
                           s = dateObject.getMinutes(); pad = true;
                           break;
                       case 's':
                           s = dateObject.getSeconds(); pad = true;
                           break;
                       case 'S':
                           s = Math.round(dateObject.getMilliseconds() * Math.pow(10, l - 3)); pad = true;
                           break;
                       case 'z':
                           // We only have one timezone to offer; the one from the browser
                           s = dd.getTimezoneName(dateObject.toGregorian());
                           if (s) { break; }
                           l = 4;
                           // fallthrough... use GMT if tz not available
                       case 'Z':
                           var offset = dateObject.toGregorian().getTimezoneOffset();
                           var tz = [
                               (offset <= 0 ? "+" : "-"),
                               string.pad(Math.floor(Math.abs(offset) / 60), 2),
                               string.pad(Math.abs(offset) % 60, 2)
                           ];
                           if (l == 4) {
                               tz.splice(0, 0, "GMT");
                               tz.splice(3, 0, ":");
                           }
                           s = tz.join("");
                           break;
                       default:
                           throw new Error("dojox.date.umalqura.locale.formatPattern: invalid pattern char: " + pattern);
                   }
                   if (pad) { s = string.pad(s, l); }
                   return s;
               });
           }

           // based on and similar to dojo.date.locale.format
           ilocale.format = function (/*dojox/date/umalqura/Date*/dateObject, /*Object?*/options) {
               // summary:
               //		Format a Date object as a String, using  settings.
               options = options || {};

               var locale = i18n.normalizeLocale(options.locale);
               var formatLength = options.formatLength || 'short';
               var bundle = ilocale._getIslamicBundle(locale);
               var str = [];

               var sauce = lang.hitch(this, formatPattern, dateObject, bundle, locale, options.fullYear);
               if (options.selector == "year") {
                   var year = dateObject.getFullYear();
                   return year;
               }
               if (options.selector != "time") {
                   var datePattern = options.datePattern || bundle["dateFormat-" + formatLength];
                   if (datePattern) { str.push(_processPattern(datePattern, sauce)); }
               }
               if (options.selector != "date") {
                   var timePattern = options.timePattern || bundle["timeFormat-" + formatLength];
                   if (timePattern) { str.push(_processPattern(timePattern, sauce)); }
               }
               var result = str.join(" "); //TODO: use locale-specific pattern to assemble date + time

               return result; // String
           };

           ilocale.regexp = function (/*object?*/options) {
               // summary:
               //		Builds the regular needed to parse a umalqura.Date

               //	based on and similar to dojo.date.locale.regexp

               return ilocale._parseInfo(options).regexp; // String
           };

           ilocale._parseInfo = function (/*oblect?*/options) {
               /* based on and similar to dojo.date.locale._parseInfo */

               options = options || {};
               var locale = i18n.normalizeLocale(options.locale);
               var bundle = ilocale._getIslamicBundle(locale);
               var formatLength = options.formatLength || 'short';
               var datePattern = options.datePattern || bundle["dateFormat-" + formatLength];
               var timePattern = options.timePattern || bundle["timeFormat-" + formatLength];

               var pattern;
               if (options.selector == 'date') {
                   pattern = datePattern;
               } else if (options.selector == 'time') {
                   pattern = timePattern;
               } else {
                   pattern = (typeof (timePattern) == "undefined") ? datePattern : datePattern + ' ' + timePattern;
               }

               var tokens = [];

               var re = _processPattern(pattern, lang.hitch(this, _buildDateTimeRE, tokens, bundle, options));
               return { regexp: re, tokens: tokens, bundle: bundle };
           };

           ilocale.parse = function (/*String*/value, /*Object?*/options) {
               // summary:
               //		This function parse string date value according to options

               // based on and similar to dojo.date.locale.parse

               value = value.replace(/[\u200E\u200F\u202A\u202E]/g, ""); //remove bidi non-printing chars

               if (!options) { options = {}; }
               var info = ilocale._parseInfo(options);

               var tokens = info.tokens, bundle = info.bundle;
               var regexp = info.regexp.replace(/[\u200E\u200F\u202A\u202E]/g, ""); //remove bidi non-printing chars from the pattern
               var re = new RegExp("^" + regexp + "$");

               var match = re.exec(value);

               var locale = i18n.normalizeLocale(options.locale);

               if (!match) { return null; } // null

               var date, date1;

               var result = [1389, 9, 22, 0, 0, 0, 0];  //FIXME: umalqura date for [1970,0,1,0,0,0,0] used in gregorian locale
               var amPm = "";
               var mLength = 0;
               var widthList = ["abbr", "wide", "narrow"];
               var valid = arr.every(match, function (v, i) {
                   if (!i) { return true; }
                   var token = tokens[i - 1];
                   var l = token.length;
                   switch (token.charAt(0)) {
                       case 'y':
                           result[0] = Number(v);
                           break;
                       case 'M':
                           if (l > 2) {
                               var months = bundle['months-format-' + widthList[l - 3]].concat();
                               if (!options.strict) {
                                   //Tolerate abbreviating period in month part
                                   //Case-insensitive comparison
                                   v = v.replace(".", "").toLowerCase();
                                   months = arr.map(months, function (s) { return s ? s.replace(".", "").toLowerCase() : s; });
                               }
                               v = arr.indexOf(months, v);
                               if (v == -1) {
                                   return false;
                               }
                               mLength = l;
                           } else {
                               v--;
                           }
                           result[1] = Number(v);
                           break;
                       case 'D':
                           result[1] = 0;
                           // fallthrough...
                       case 'd':
                           result[2] = Number(v);
                           break;
                       case 'a': //am/pm
                           var am = options.am || bundle['dayPeriods-format-wide-am'],
                               pm = options.pm || bundle['dayPeriods-format-wide-pm'];
                           if (!options.strict) {
                               var period = /\./g;
                               v = v.replace(period, '').toLowerCase();
                               am = am.replace(period, '').toLowerCase();
                               pm = pm.replace(period, '').toLowerCase();
                           }
                           if (options.strict && v != am && v != pm) {
                               return false;
                           }

                           // we might not have seen the hours field yet, so store the state and apply hour change later
                           amPm = (v == pm) ? 'p' : (v == am) ? 'a' : '';
                           break;
                       case 'K': //hour (1-24)
                           if (v == 24) { v = 0; }
                           // fallthrough...
                       case 'h': //hour (1-12)
                       case 'H': //hour (0-23)
                       case 'k': //hour (0-11)
                           //in the 12-hour case, adjusting for am/pm requires the 'a' part
                           //which could come before or after the hour, so we will adjust later
                           result[3] = Number(v);
                           break;
                       case 'm': //minutes
                           result[4] = Number(v);
                           break;
                       case 's': //seconds
                           result[5] = Number(v);
                           break;
                       case 'S': //milliseconds
                           result[6] = Number(v);
                   }
                   return true;
               });

               var hours = +result[3];
               if (amPm === 'p' && hours < 12) {
                   result[3] = hours + 12; //e.g., 3pm -> 15
               } else if (amPm === 'a' && hours == 12) {
                   result[3] = 0; //12am -> 0
               }
               var dateObject = new IDate(result[0], result[1], result[2], result[3], result[4], result[5], result[6]);
               return dateObject;
           };

           function _processPattern(pattern, applyPattern, applyLiteral, applyAll) {
               // summary:
               //		Process a pattern with literals in it

               // Break up on single quotes, treat every other one as a literal, except '' which becomes '
               var identity = function (x) { return x; };
               applyPattern = applyPattern || identity;
               applyLiteral = applyLiteral || identity;
               applyAll = applyAll || identity;

               //split on single quotes (which escape literals in date format strings)
               //but preserve escaped single quotes (e.g., o''clock)
               var chunks = pattern.match(/(''|[^'])+/g);
               var literal = pattern.charAt(0) == "'";

               arr.forEach(chunks, function (chunk, i) {
                   if (!chunk) {
                       chunks[i] = '';
                   } else {
                       chunks[i] = (literal ? applyLiteral : applyPattern)(chunk);
                       literal = !literal;
                   }
               });
               return applyAll(chunks.join(''));
           }

           function _buildDateTimeRE(tokens, bundle, options, pattern) {
               // based on and similar to dojo.date.locale._buildDateTimeRE

               pattern = regexp.escapeString(pattern);
               var locale = i18n.normalizeLocale(options.locale);

               return pattern.replace(/([a-z])\1*/ig, function (match) {

                   // Build a simple regexp.  Avoid captures, which would ruin the tokens list
                   var s;
                   var c = match.charAt(0);
                   var l = match.length;
                   var p2 = '', p3 = '';
                   if (options.strict) {
                       if (l > 1) { p2 = '0' + '{' + (l - 1) + '}'; }
                       if (l > 2) { p3 = '0' + '{' + (l - 2) + '}'; }
                   } else {
                       p2 = '0?'; p3 = '0{0,2}';
                   }
                   switch (c) {
                       case 'y':
                           s = '\\d+';
                           break;
                       case 'M':
                           s = (l > 2) ? '\\S+ ?\\S+' : p2 + '[1-9]|1[0-2]';
                           break;
                       case 'd':
                           s = '[12]\\d|' + p2 + '[1-9]|3[01]';
                           break;
                       case 'E':
                           s = '\\S+';
                           break;
                       case 'h': //hour (1-12)
                           s = p2 + '[1-9]|1[0-2]';
                           break;
                       case 'k': //hour (0-11)
                           s = p2 + '\\d|1[01]';
                           break;
                       case 'H': //hour (0-23)
                           s = p2 + '\\d|1\\d|2[0-3]';
                           break;
                       case 'K': //hour (1-24)
                           s = p2 + '[1-9]|1\\d|2[0-4]';
                           break;
                       case 'm':
                       case 's':
                           s = p2 + '\\d|[0-5]\\d';
                           break;
                       case 'S':
                           s = '\\d{' + l + '}';
                           break;
                       case 'a':
                           var am = options.am || bundle['dayPeriods-format-wide-am'],
                               pm = options.pm || bundle['dayPeriods-format-wide-pm'];
                           if (options.strict) {
                               s = am + '|' + pm;
                           } else {
                               s = am + '|' + pm;
                               if (am != am.toLowerCase()) { s += '|' + am.toLowerCase(); }
                               if (pm != pm.toLowerCase()) { s += '|' + pm.toLowerCase(); }
                           }
                           break;
                       default:
                           s = ".*";
                   }
                   if (tokens) { tokens.push(match); }
                   return "(" + s + ")"; // add capture
               }).replace(/[\xa0 ]/g, "[\\s\\xa0]"); // normalize whitespace.  Need explicit handling of \xa0 for IE. */
           }

           var _customFormats = [];
           ilocale.addCustomFormats = function (/*String*/packageName, /*String*/bundleName) {
               // summary:
               //		Add a reference to a bundle containing localized custom formats to be
               //		used by date/time formatting and parsing routines.
               _customFormats.push({ pkg: packageName, name: bundleName });
           };

           ilocale._getIslamicBundle = function (/*String*/locale) {
               var islamic = {};
               arr.forEach(_customFormats, function (desc) {
                   var bundle = i18n.getLocalization(desc.pkg, desc.name, locale);
                   islamic = lang.mixin(islamic, bundle);
               }, this);
               return islamic; /*Object*/
           };

           ilocale.addCustomFormats("dojo.cldr", "islamic");

           ilocale.getNames = function (/*String*/item, /*String*/type, /*String?*/context, /*String?*/locale, /*dojox/date/umalqura/Date?*/date) {
               // summary:
               //		Used to get localized strings from dojo.cldr for day or month names.
               var label;
               var lookup = ilocale._getIslamicBundle(locale);
               var props = [item, context, type];
               if (context == 'standAlone') {
                   var key = props.join('-');
                   label = lookup[key];
                   // Fall back to 'format' flavor of name
                   if (label[0] == 1) { label = undefined; } // kludge, in the absence of real aliasing support in dojo.cldr
               }
               props[1] = 'format';

               // return by copy so changes won't be made accidentally to the in-memory model
               return (label || lookup[props.join('-')]).concat(); /*Array*/
           };


           ilocale.weekDays = ilocale.getNames('days', 'wide', 'format');

           ilocale.months = ilocale.getNames('months', 'wide', 'format');

           return ilocale;
       });