GetNoun = function(number, one, two, five) {
    number = Math.abs(number);
    number %= 100;
    if (number >= 5 && number <= 20) {
        return five;
    }
    number %= 10;
    if (number == 1) {
        return one;
    }
    if (number >= 2 && number <= 4) {
        return two;
    }
    return five;
};

GetAdj = function(number, one, two) {
    number %= 100;
    if (number == 11) return two;
    number %= 10;
    if (number == 1) return one;
    return two;
};

setCookie = function(key, value) {
    var expires = new Date();
    expires.setTime(expires.getTime() + (1 * 24 * 60 * 60 * 1000));
    document.cookie = key + '=' + value + ';expires=' + expires.toUTCString() + ';path=/';
};

getCookie = function(name) {
    var matches = document.cookie.match(new RegExp(
        "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
    ));

    return matches ? decodeURIComponent(matches[1]) : undefined;
}

detectRegion = function() {
    function renderRegionData(region_name, country_code) {
        var regions = {
            'Moscow': {
                'city': 'В Москве',
                'phone': '+7 495 775-16-37'
            },
            'St.-Petersburg': {
                'city': 'В Санкт Петербурге',
                'phone': '+7 812 449-03-54.'
            },
            'Rostov': {
                'city': 'В Ростове-на-Дону',
                'phone': '+7 863 209-85-65'
            },
            'Krasnodarskiy Kray': {
                'city': 'В Ростове-на-Дону',
                'phone': '+7 863 209-85-65'
            },
            'Stavropol\'skiy Kray': {
                'city': 'В Ростове-на-Дону',
                'phone': '+7 863 209-85-65'
            },
            'Voronezhskaya Oblast': {
                'city': 'В Воронеже',
                'phone': '8 800 700-16-37'
            },
            'Volgogradskaya Oblast': {
                'city': 'В Волгограде',
                'phone': '8 800 700-16-37'
            },
            'US': {
                'city': 'В США',
                'phone': '+7 495 775-16-37'
            },
            'UA': {
                'city': 'В Украине',
                'phone': '+7 495 775-16-37'
            },
            'KZ': {
                'city': 'В Казахстане',
                'phone': '+7 495 775-16-37'
            },
            'BY': {
                'city': 'В Беларуси',
                'phone': '+7 495 775-16-37'
            },
            'DE': {
                'city': 'В Германии',
                'phone': '+7 495 775-16-37'
            },
            'UZ': {
                'city': 'В Узбекистане',
                'phone': '+7 495 775-16-37'
            }

        };

        var current_region = regions[region_name] || regions[country_code]

        if(typeof current_region !== "undefined") {
            $('.city').text(current_region['city']);
            $('.header-contacts .consultation h3').text(current_region['phone']);
        }

    }


    if(typeof getCookie('region') === "undefined" || getCookie('region') == "") {
        var request = $.get('http://ip-api.com/json')

        request.done(function(data) {
            setCookie('region', data.regionName);

            renderRegionData(data.regionName, data.countryCode);
        });
    } else {
        renderRegionData(getCookie('region'));
    }

};

$(function() {
    var csrftoken = getCookie('csrftoken');


    $( "[href^='#service-form-submit']" ).click(function(e) {
        e.preventDefault();
        $('.service-calculator form').submit();
    });


    function csrfSafeMethod(method) {
        // these HTTP methods do not require CSRF protection
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
    }
    $.ajaxSetup({
        beforeSend: function(xhr, settings) {
            if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
                xhr.setRequestHeader("X-CSRFToken", csrftoken);
            }
        }
    });

    detectRegion();

    $.urlParamGet = function (name){
        var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
        if (results==null) {
           return null;
        }
        else{
           return results[1] || 0;
        }
    };

    $.urlParamUpdate = function (paramName, paramValue){
        if(paramValue == null) {
            paramValue = ''
        }

        var pattern = new RegExp('\\b(' + paramName + '=).*?(&|$)'),
            url = window.location.href;
        if (url.search(pattern) >= 0){
            window.location = url.replace(pattern, '$1' + paramValue + '$2');
            return window.location;
        }

        window.location = url + '#' + (url.indexOf('?')>0 ? '&' : '?') + paramName + '=' + paramValue;
        return window.location;
    };
});