/**
 * This file lists all the methods needed for formatting.
 * @requires ojs/ojcore
 * @requires ojs/ojvalidation
 * @requires knockout
 */
define([
  "ojs/ojcore",
  "knockout",
  "base-models/validations/obdx-locale",
  "framework/js/constants/constants",
  "ojs/ojvalidation"
], function (oj, ko, BaseLocale, Constants) {
  /**
   * This file lists all the methods needed for formatting.
   * @class
   * @alias Formatter
   * @memberof module:baseModel
   */
  "use strict";
  var FormatterModel = function () {
    /**
     * Assign <code>this</code> to <code>self</code>.
     * @member {Object}
     */
    var self = this;

    /**
     * This function is used to format the number into percent value
     * @function formatNumber
     * @instance
     * @memberof Formatter
     * @param {Float} number        - This field indicates the number in decimal format which has to be formatted
     * @param {String} style         - This field indicates the style which should be used for formatting the number, like percent or decimal
     * @param {Integer} [maximumFractionDigits=2] - This field indicates the maximum digits permissible after the decimal.
     * @param {Integer} [minimumFractionDigits=2] -  This field indicates the minimum digits permissible after the decimal.
     * @returns {String} The formatted number e.g. <code>50.00%</code>.
     * @example
     * self.formatNumber(63.2512/100, 'percent', 2, 1);
     * // returns "63.25%"
     */
    self.formatNumber = function (number, style, maximumFractionDigits, minimumFractionDigits) {
      var formatOption, numberConverter;
      maximumFractionDigits = maximumFractionDigits || 2;
      minimumFractionDigits = minimumFractionDigits || 2;
      formatOption = {
        style: style,
        maximumFractionDigits: maximumFractionDigits,
        minimumFractionDigits: minimumFractionDigits
      };
      numberConverter = oj.Validation.converterFactory("number").createConverter(formatOption);
      return numberConverter.format(number);
    };

    /**
     * This function is used to format the date as per the standard format of the users locale.
     * It internally uses <code>oj.Validation.converterFactory</code> for formatting.<br>
     * <table class="params">
     * <thead>
     * <tr>
     * <th>Format</th>
     * <th class="last">Style</th>
     * </tr>
     * </thead>
     * <tbody>
     * <tr>
     * <td class="name">dateFormat</td>
     * <td class="type">dd MMM yyyy</td>
     * </tr>
     * <tr>
     * <td class="name">dateMonthFormat</td>
     * <td class="type">dd MMM</td>
     * </tr>
     * <tr>
     * <td class="name">dateTimeStampFormat</td>
     * <td class="type">dd MMM yyyy hh:mm:ss a</td>
     * </tr>
     * <tr>
     * <td class="name">dateTimehhmmFormat</td>
     * <td class="type">dd MMM yyyy hh:mm a</td>
     * </tr>
     * <tr>
     * <td class="name">timeFormat</td>
     * <td class="type">h:mm a</td>
     * </tr>
     * <tr>
     * <td class="name">monthYearFormat</td>
     * <td class="type">MMM yyyy</td>
     * </tr>
     * <tr>
     * <td class="name">dateTimeFormat</td>
     * <td class="type">dd MMM hh:mm a</td>
     * </tr>
     * <tr>
     * <td class="name">timeStampFormat</td>
     * <td class="type">hh:mm:ss</td>
     * </tr>
     * </tbody>
     * </table>
     * @function formatDate
     * @memberof Formatter
     * @instance
     * @param {String} date  The unformatted date string
     * @param {String} [dateFormat=dateFormat]  The date format, if any custom format is required.
     * @returns {String} The formatted date is returned.
     * @example
     * self.formatDate("2017-10-03T19:43:45.695Z", "dateTimeStampFormat")
     * // returns "04 Oct 2017 01:13:45 AM"
     */
    self.formatDate = function (date, dateFormat) {
      var dateConverter, pattern,
        localeDate = ko.utils.unwrapObservable(date);
      var conversionDate = null;
      if (!localeDate || localeDate === "") {
        return "";
      }
      if (localeDate.length > 19 && Constants.timezoneOffset) {
        conversionDate = new Date(localeDate);
        conversionDate.setMinutes(conversionDate.getMinutes() + conversionDate.getTimezoneOffset() + (-1 * Constants.timezoneOffset));
      }
      dateFormat = dateFormat || "dateFormat";
      pattern = BaseLocale[dateFormat] || dateFormat;
      dateConverter = oj.Validation.converterFactory(oj.ConverterFactory.CONVERTER_TYPE_DATETIME).createConverter({
        pattern: pattern
      });
      return dateConverter.format(conversionDate ? oj.IntlConverterUtils.dateToLocalIso(conversionDate) : localeDate);
    };

    self.formatDateVn = function (date, dateFormat) {
      if (date && date.length === 10 && date.includes('-') || date instanceof Function && date() && date().length === 10 && date().includes('-')) {
        if (date instanceof Function) {
          dateFormatted = date().split('-').reverse().join('/');
        } else {
          dateFormatted = date.split('-').reverse().join('/');
        }
      }
    }

    /**
     * Returns <code>DateTimeConverter</code> object using date format as <code>dd MMM YYYY</code>.
     * @instance
     * @memberof Formatter
     * @alias dateConverter
     * @type {DateTimeConverter}
     */
    self.dateConverter = oj.Validation.converterFactory(oj.ConverterFactory.CONVERTER_TYPE_DATETIME).createConverter({
      pattern: BaseLocale.dateFormat
    });

    /**
     * Returns <code>DateTimeConverter</code> object using time format as <code>hh:mm</code>.
     * @instance
     * @memberof Formatter
     * @alias timeConverter
     * @type {DateTimeConverter}
     */
    self.timeConverter = oj.Validation.converterFactory(oj.ConverterFactory.CONVERTER_TYPE_DATETIME).createConverter({
      "hour": "2-digit",
      "hour12": false,
      "minute": "2-digit"
    });

    /**
     * Returns <code>DateTimeConverter</code> object using date time format as <code>dd MMM yyyy hh:mm a</code>.
     * @instance
     * @memberof Formatter
     * @alias dateTimeConverter
     * @type {DateTimeConverter}
     */
    self.dateTimeConverter = oj.Validation.converterFactory(oj.ConverterFactory.CONVERTER_TYPE_DATETIME).createConverter({
      pattern: BaseLocale.dateTimehhmmFormat
    });

    /**
     * This function is used to format the currency as per the standard format for a particular currency.
     * @instance
     * @function formatCurrency
     * @param {Float} amount        This field indicates the amount in decimal format which has to be formatted
     * @param {String} currencyCode     This field indicates the standard ISO currency code which should be used for formatting the amount
     * @memberof Formatter
     * @returns {String} The formatted amount e.g. $5,000.00
     * @example self.formatCurrency(2502.25, 'GBP') //returns "£2,502.25"
     */
    self.formatCurrency = function (amount, currencyCode, hideUnit) {
      var salOptions = {
        style: "currency",
        currency: currencyCode,
        useGrouping: true,
        currencyDisplay: 'symbol',
        pattern: hideUnit ? '###,###' : '###,### ¤',
        separators: {
          decimal: '.',
          group: '.'
        }
      };
      if ('VND' != currencyCode) {
        salOptions = {
          style: "currency",
          currency: currencyCode,
          useGrouping: true,
          currencyDisplay: 'symbol',
          pattern: '###,###.##',
          separators: {
            decimal: '.',
            group: '.'
          }
        };

        var salaryConverter = oj.Validation.converterFactory("number").createConverter(salOptions);
        return salaryConverter.format(amount) + ' ' + currencyCode;
      }
      var salaryConverter = oj.Validation.converterFactory("number").createConverter(salOptions);
      return salaryConverter.format(amount);
    };

    self.formatCurrencyVN = function (strAmt) {
      var a  =  strAmt.toString();
      a = a.replace(/VND/g, "").replace(/ /g, "").replace(/,/g, "").replace(/\./g, "");
      var b = self.formatCurrency(a, 'VND').replace("VND", "").replace(" ", "");
      return b;
    };

	function amttowordeng(amount) {
      var s = amount.toString();
      var th = ['', 'THOUSAND', 'MILLION', 'BILLION', 'TRILLION'];
      var dg = ['ZERO', 'ONE', 'TWO', 'THREE', 'FOUR', 'FIVE', 'SIX', 'SEVEN', 'EIGHT', 'NINE'];
      var tn = ['TEN', 'ELEVEN', 'TWELVE', 'THIRTEEN', 'FOURTEEN', 'FIFTEEN', 'SIXTEEN', 'SEVENTEEN', 'EIGHTEEN', 'NINETEEN'];
      var tw = ['TWENTY', 'THIRTY', 'FORTY', 'FIFTY', 'SIXTY', 'SEVENTY', 'EIGHTY', 'NINETY'];

      s = s.replace(/[\, ]/g, '');

      var x = s.indexOf('.');
      if (x == -1) {
        x = s.length;
      }
      if (x > 15) {
        alert('This number is too big to convert in words');
      }
      var n = s.split('');
      var str = '';
      var sk = 0;
      for (var i = 0; i < x; i++) {
        if ((x - i) % 3 == 2) {
          if (n[i] == '1') {
            str += tn[Number(n[i + 1])] + ' ';
            i++;
            sk = 1;
          } else if (n[i] != 0) {
            str += tw[n[i] - 2] + ' ';
            sk = 1;
          }
        } else if (n[i] != 0) {
          str += dg[n[i]] + ' ';
          if ((x - i) % 3 == 0) {
            str += 'HUNDRED ';
          }
          sk = 1;
        }
        if ((x - i) % 3 == 1) {
          if (sk) str += th[(x - i - 1) / 3] + ' ';
          sk = 0;
        }
      }
      if (x != s.length) {
        var y = s.length;
        str += 'POINT ';
        for (var i = x + 1; i < y; i++) {
          str += dg[n[i]] + ' ';
        }
      }

      if (str != '') {
        str = str.toLowerCase() + 'only';
      } else {
        str = str.toLowerCase();
      }

      var strWord = str;
      var strWordFirst = strWord.substr(0, 1).toUpperCase() + strWord.substr(1);

      return strWordFirst;
    };

    var chu = "kh\u00f4ng m\u1ed9t hai ba b\u1ed1n n\u0103m s\u00e1u b\u1ea3y t\u00e1m ch\u00edn".split(" "), donvi = ";m\u01b0\u01a1i;tr\u0103m;ngh\u00ecn;m\u01b0\u01a1i;tr\u0103m;tri\u1ec7u;m\u01b0\u01a1i;tr\u0103m;t\u1ef7;m\u01b0\u01a1i;tr\u0103m;ngh\u00ecn t\u1ef7;m\u01b0\u01a1i;tr\u0103m;tri\u1ec7u t\u1ef7;m\u01b0\u01a1i;tr\u0103m;t\u1ef7 t\u1ef7;m\u01b0\u01a1i;tr\u0103m;".split(";");
    function converttochar(b) {
		var unitWord = b%1000 === 0? ' \u0111\u1ED3ng ch\u1EB5n':' \u0111\u1ED3ng';
      for (var c = "", c = b + "", b = c.length, a = "", d = a = "", f = "", a = "", e = b; 0 < e; e--)a = tach3(c.substr(b - e, b)), "null" != a ? (f = "" == a ? f + a : f + a + " " + donvi[e - 3] + " ", e -= 2) : (a = c.substr(b - e).substr(0, 1), "1" == a && "m\u01b0\u01a1i" == donvi[e - 1] && 1 < e ? d = a = "m\u01b0\u1eddi" : (a = "1" == a ? "m\u01b0\u01a1i" != donvi[e] ? "m\u1ed9t" : "m\u01b0\u1eddi" == d ? " m\u1ed9t" : e == b ? "m\u1ed9t" : "m\u1ed1t" : "5" == a ? "m\u01b0\u01a1i" != donvi[e] ? "n\u0103m" : 0 == f.length ? "n\u0103m" : " l\u0103m" : "m\u01b0\u1eddi" == d ? "0" == a ? "" : "5" == a ? " l\u0103m" : " " + chu[a] :
        "0" == a ? "" : chu[a], d = " "), f += a, "m\u01b0\u1eddi" != d && (f = f + " " + donvi[e - 1] + " ")); 
		return f.substr(0, 1).toUpperCase() + f.substr(1) + unitWord;
    }
    function tach3(b) {
      var c = "null"; if (0 == b.length % 3) {
        var a = b.substr(0, 3), d = a.substr(0, 1), b = a.substr(1, 1), a = a.substr(2, 1); "0" == d && "0" == b && "0" == a ? c = "" : "0" == d && "0" == b && "0" != a ? c = "l\u1ebb " + chu[a] : "0" == d && "0" != b && "0" == a ? (c = "kh\u00f4ng tr\u0103m ", c = "1" == b ? c + "m\u01b0\u1eddi" : c + chu[b] + " m\u01b0\u01a1i") : "0" == d && "0" != b && "0" != a ? (c = "kh\u00f4ng tr\u0103m", d = chu[a], "n\u0103m" == d && (d = "l\u0103m"), c = "1" == b ? c + " m\u01b0\u1eddi " + d : "1" == a ? c + " " + chu[b] + " m\u01b0\u01a1i m\u1ed1t" : c + " " + chu[b] + " m\u01b0\u01a1i " + d) : "0" !=
          d && "0" == b && "0" == a ? c = chu[d] + " tr\u0103m" : "0" != d && "0" == b && "0" != a ? c = chu[d] + " tr\u0103m l\u1ebb " + chu[a] : "0" != d && ("0" != b && "0" == a) && (c = chu[d] + " tr\u0103m", c = "1" == b ? c + " m\u01b0\u1eddi" : c + " " + chu[b] + " m\u01b0\u01a1i")
      } return c
    };

    self.getAmountInWords = function (amount, ccy) {
		console.log(ccy)
      var language = sessionStorage.getItem("user-locale") || document.getElementsByTagName("html")[0].getAttribute("lang") || "en";

      if (language === 'en') {
        //eng
        return amttowordeng(Number(amount).toString());

      } else if (language === 'vn') {
        //vn
        return converttochar(Number(amount).toString().replace(/VND/g, "").replace(/ /g, "").replace(/,/g, "").replace(/\./g, ""));
      }
    };
	
	self.resizeBase64Img = function(base64, width, height) {
		var canvas = document.createElement("canvas");
		canvas.width = width;
		canvas.height = height;
		var context = canvas.getContext("2d");
		var deferred = $.Deferred();

		var img = new Image();

		img.onload = function() {
		 context.scale(width/this.width,  height/this.height);
		 context.drawImage(this, 0, 0);
		 deferred.resolve(canvas.toDataURL());
		};
		img.src = base64;

		return deferred.promise();
	};
  };
  return FormatterModel;
});