// Code goes here
var app = angular.module('testapp',[]);
app.controller('appController', function ($scope) {

    $scope.positiveNumber = 0;
    $scope.negativeNumber = 0;
 $scope.decimal  = 0;
  $scope.decimalUpto  = 0
   $scope.negativedecimal  = 0;
  $scope.negativedecimalUpto  = 0
    $scope.total = 0;});
angular.module('testapp')
    .directive('validNumber', function () {
        return {
            require: '?ngModel',
            link: function (scope, element, attrs, ngModelCtrl) {

                element.on('keydown', function (event) {
                    var keyCode = [];
                    if (attrs.allowNegative == "true") {
                        keyCode = [8, 9, 36, 35, 37, 39, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 109, 110, 173, 190, 189];
                    }
                    else {
                        keyCode = [8, 9, 36, 35, 37, 39, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 110, 173, 190];
                    }


                    if (attrs.allowDecimal == "false") {

                        var index = keyCode.indexOf(190);
                        if (index > -1) {
                            keyCode.splice(index, 1);
                        }
                        index = keyCode.indexOf(110);
                        if (index > -1) {
                            keyCode.splice(index, 1);
                        }
                    }

                    if ($.inArray(event.which, keyCode) == -1)
                        event.preventDefault();
                    else {
                        var oVal = ngModelCtrl.$modelValue || '';
                        console.log(oVal);
                        if ($.inArray(event.which, [109, 173]) > -1 && oVal.indexOf('-') > -1) event.preventDefault();
                        else if ($.inArray(event.which, [110, 190]) > -1 && oVal.indexOf('.') > -1) event.preventDefault();
                    }
                })
                .on('blur', function () {
                    if (element.val() == '' || parseFloat(element.val()) == 0.0 || element.val() == '-') {
                        if (attrs.allowDecimal == "false")
                            ngModelCtrl.$setViewValue('0');
                        else
                            ngModelCtrl.$setViewValue('0.00');
                    }
                    else if (attrs.allowDecimal == "false") {
                        ngModelCtrl.$setViewValue(element.val());
                    }
                    else {
                        var fixedValue;
                        if (attrs.decimalUpto) {
                            fixedValue = parseFloat(element.val()).toFixed(attrs.decimalUpto);
                        }
                        else {
                            fixedValue = parseFloat(element.val()).toFixed(2);
                        }
                        ngModelCtrl.$setViewValue(fixedValue);
                    }



                    ngModelCtrl.$render();
                    scope.$apply();
                });

                ngModelCtrl.$parsers.push(function (text) {
                  var oVal = ngModelCtrl.$modelValue;
                    var nVal = ngModelCtrl.$viewValue;
                    console.log(nVal);
                    if (parseFloat(nVal) != nVal) {

                        if (nVal === null || nVal === undefined || nVal == '' || nVal == '-') oVal = nVal;

                        ngModelCtrl.$setViewValue(oVal);
                        ngModelCtrl.$render();
                        return oVal;
                    }
                    else {
                        var decimalCheck = nVal.split('.');
                        if (!angular.isUndefined(decimalCheck[1])) {
                            if (attrs.decimalUpto)
                                decimalCheck[1] = decimalCheck[1].slice(0, attrs.decimalUpto);
                            else
                                decimalCheck[1] = decimalCheck[1].slice(0, 2);
                            nVal = decimalCheck[0] + '.' + decimalCheck[1];
                        }

                        ngModelCtrl.$setViewValue(nVal);
                        ngModelCtrl.$render();
                        return nVal;
                    }
                });

                ngModelCtrl.$formatters.push(function (text) {
                    if (text == '' || text == '0' || text == null && attrs.allowDecimal == "false") return '0';
                    else if (text == '' || text == '0' || text == null && attrs.allowDecimal != "false" && attrs.decimalUpto == undefined) return '0.00';
                    else if (text == '' || text == '0' || text == null && attrs.allowDecimal != "false" && attrs.decimalUpto != undefined) return parseFloat(0).toFixed(attrs.decimalUpto);
                    else if (attrs.allowDecimal != "false" && attrs.decimalUpto != undefined) return parseFloat(text).toFixed(attrs.decimalUpto);
                    else {
                        if (attrs.allowDecimal == "false")
                            return parseFloat(text).toFixed(0);
                        else
                            return parseFloat(text).toFixed(2);
                    }
                });
            }
        };
    });