var userInteracted = $('.location-wrapper').length === 0;

// we don't want to focus on street element on page load, only if user actually interacts with form
$('.location-wrapper input[type="text"]').on('focus',
    function(e) {
        if (!userInteracted)
            userInteracted = true;

        return true;
    });
$('.location-wrapper').on('click',
    function(e) {
        if (!userInteracted)
            userInteracted = true;

        return true;
    });

$.fn.ehak2 = function(options) {
    options = $.extend({
            // If true, we call geocode() after selection is changed
            updateMapOnChange: false,

            // Placeholder for settlement select2 dropdown
            placeholder: 'Поиск населенного пункта',

            // Optional method to call after selection changed or cleared
            onChangeCallback: null,

            // Show allow clear button on Select2
            allowClear: false,

            // To allow this component to be used in several places on a single page, pass a prefix to differentiate
            // between different elements. This is applied like this: $('#{prefix}CityName')
            addressViewPrefix: '',

            // To allow this component to be used in several places on a single page, pass a prefix to differentiate
            // between different elements. This is applied like this: $('#{prefix}Lat')
            coordinatesViewPrefix: '',

            // If we have a dropdown with Location names, like in order create/edit view, we want to update that
            // when an existing Location is selected, but address is changed. To allow this, pass the dropdown
            // as a jQuery element here: $('#LocationName')
            elLocationName: null,

            // When displaying Select2 inside a bootstrap modal, this is required for correct functioning.
            // To use this, pass a jQuery element here: $('#modal')
            dropdownParent: null,

            urls: {
                // URL to query EHAK data from
                ehak: 'https://itb.jetoil.ee/ajax/ehak/index',

                // URL to find EHAK County by name, used in reverse geocoding
                countyByName: 'https://itb.jetoil.ee/ajax/locations/getcountybyname',

                // URL to find EHAK City by name, used in reverse geocoding
                cityByName: 'https://itb.jetoil.ee/ajax/locations/getcitybyname',

                // URL to find EHAK Village by name, used in reverse geocoding
                villageByName: 'https://itb.jetoil.ee/ajax/locations/getvillagebyname',

                // URL to find EHAK Parish by name, used in reverse geocoding
                parishByName: 'https://itb.jetoil.ee/ajax/locations/getparishbyname',

                // URL to find EHAK Borough by name, used in reverse geocoding
                boroughByName: 'https://itb.jetoil.ee/ajax/locations/getboroughbyname'
            }
        },
        options);

    var elCountryId = $('#{0}CountryId'.format(options.addressViewPrefix)),
        elLat = $('#{0}Lat'.format(options.coordinatesViewPrefix)),
        elLng = $('#{0}Lng'.format(options.coordinatesViewPrefix)),
        elCountyName = $('#{0}CountyName'.format(options.addressViewPrefix)),
        elCountyId = $('#{0}CountyId'.format(options.addressViewPrefix)),
        elCityName = $('#{0}CityName'.format(options.addressViewPrefix)),
        elCityId = $('#{0}CityId'.format(options.addressViewPrefix)),
        elVillageName = $('#{0}VillageName'.format(options.addressViewPrefix)),
        elVillageId = $('#{0}VillageId'.format(options.addressViewPrefix)),
        elParishName = $('#{0}ParishName'.format(options.addressViewPrefix)),
        elParishId = $('#{0}ParishId'.format(options.addressViewPrefix)),
        elBoroughName = $('#{0}BoroughName'.format(options.addressViewPrefix)),
        elBoroughId = $('#{0}BoroughId'.format(options.addressViewPrefix)),
        elStreet = $('#{0}Street'.format(options.addressViewPrefix)),
        elPostCode = $('#{0}PostCode'.format(options.addressViewPrefix));

    return this.each(function() {
        var elSelect2 = this;

        var updateSelect2 = function(select2Element, value, text) {
            text = text || value;
            if ($(select2Element).find("option[value='" + value + "']").length) {
                $(select2Element).val(value);
            } else {
                var newOption = new Option(text, value, true, true);
                $(select2Element).append(newOption);
            }
        };

        $(elSelect2).select2({
            language: 'ru',
            dropdownParent: options.dropdownParent,
            placeholder: options.placeholder || 'Поиск населенного пункта',
            minimumInputLength: 2, // Does the user have to enter any data before sending the ajax request
            allowClear: options.allowClear,
            multiple: false,
            ajax: {
                // How long the user has to pause their typing before sending the next request
                delay: 150,

                // The url of the json service
                url: options.urls.ehak,

                dataType: 'jsonp'
            },
            templateResult: function(item) {
                // Only proceed if we have a custom result
                if (!item.type)
                    return item.text;

                // Use custom select2 option formatting
                var $option = $('<div class="row" style="margin-right:0; margin-left:0;"></div>');

                $($option).append('<div class="option-img-container col-xs-3 col-md-2 col-lg-1" style="padding-left:0; padding-right:0;"></div>');

                $($option).append('<div class="option-text-container col-xs-9 col-md-10 col-lg-11" style="padding-left:0; padding-right:0;"><div>' + item.text + (item.type ? ' <span class="option-type-container">(' + item.type + ')</span>' : '') + '</div></div>');
                $('.option-text-container', $option).append('<div class="option-parent-container">' + item.parents + '</div>');

                return $option;
            },
            templateSelection: function(item) {
                if (!item.CountyName)
                    return item.text;

                return $('<span>{0} <small>({1})</small></span>'.format(item.text, item.CountyName));
            }
        }).on('select2:select',
            function(e) {
                var id = parseInt(e.params.data.id),
                        type = e.params.data.typeInEstonian,
                    name = e.params.data.text,
                    countyName = e.params.data.CountyName,
                    countyId = e.params.data.CountyId,
                    countyChanged = elCountyId.val() != countyId;

                elCountyId.val(countyId);
                if (countyChanged)
                    elCountyId.change();

                elCountyName.val(countyName);

                if (type === 'linn') {
                    elCityId.val(id).change();
                    elCityName.val(name);
                    elVillageId.val('');
                    elVillageName.val('');
                    elBoroughId.val('');
                    elBoroughName.val('');
                    elParishId.val('');
                    elParishName.val('');
                }
                else if (type === 'küla') {
                    elVillageId.val(id).change();
                    elVillageName.val(name);
                    elBoroughId.val('');
                    elBoroughName.val('');
                    elCityId.val('');
                    elCityName.val('');
                    elParishId.val('');
                    elParishName.val('');
                }
                else if (type === 'alevik') {
                    elBoroughId.val(id).change();
                    elBoroughName.val(name);
                    elCityId.val('');
                    elCityName.val('');
                    elVillageId.val('');
                    elVillageName.val('');
                    elParishId.val('');
                    elParishName.val('');
                }
                else if (type === 'vald') {
                    elParishId.val(id).change();
                    elParishName.val(name);
                    elBoroughId.val('');
                    elBoroughName.val('');
                    elCityId.val('');
                    elCityName.val('');
                    elVillageId.val('');
                    elVillageName.val('');
                }

                if (options.elLocationName != null) {
                    // If user has already entered a new location name, it will equal the value of the <option>
                    if (options.elLocationName.val() != options.elLocationName.find('option:selected').text()) {
                        options.elLocationName.val(null).trigger('change');
                        options.elLocationName.data('select2').$container.find('.select2-selection__placeholder').text('Введите название точки доставки');
                    }
                }

                if (typeof(userInteracted) === 'undefined' || userInteracted) {
                    elStreet.focus();

                    if (options.updateMapOnChange)
                        geocode(elSelect2.getAddressAsString(), elSelect2.getAddressAsString(true));
                    else if (typeof(options.onChangeCallback) !== 'undefined' && options.onChangeCallback !== null)
                        options.onChangeCallback();
                }
            }).on('select2:unselect',
            function(e) {
                if (options.elLocationName != null)
                    options.elLocationName.data('select2').$container.find('.select2-selection__placeholder').text('Выбери адрес доставки');

                elCountyId.val('');
                elCountyName.val('');
                elCityId.val('');
                elCityName.val('');
                elVillageId.val('');
                elVillageName.val('');
                elBoroughId.val('');
                elBoroughName.val('');
                elParishId.val('');
                elParishName.val('');

                if (typeof(options.onChangeCallback) !== 'undefined' && options.onChangeCallback !== null)
                    options.onChangeCallback();
            }).data('ehakInitialized', true);

        /**
         * Assemble address as string for use in Google Maps geocode function
         */
        this.getAddressAsString = function(excludeStreet = false) {
            var country = 'Estonia',
                county = elCountyName.val(),
                city = elCityName.val(),
                village = elVillageName.val(),
                borough = elBoroughName.val(),
                parish = elParishName.val(),
                street = elStreet.val(),
                address = '';

            if (street && !excludeStreet)
                address += street + ', ';
            if (city != null && city !== '')
                address += city + ', ';
            if (village != null && village !== '')
                address += village + ', ';
            if (borough != null && borough !== '')
                address += borough + ', ';
            if (parish)
                address += parish + (parish.indexOf(" linn") < 0 ? ' vald, ' : ', ');
            if (county) {
                // little hack for Google Maps. EHAK uses 'Hiiu' and 'Saare' as county names, but google maps understands 'Hiiumaa' and 'Saaremaa'
                if (county == 'Hiiu' || county == 'Saare')
                    county += 'maa';
                else
                    county += ' maakond';

                address += county + ', ';
            }

            address += country;

            //console.log('Assembled address: ' + address);

            return address;
        };

        /**
         * Update location from Google Maps reverse geocode result
         */
        this.updateFromGeocodeResult = function(result) {
            var countyName,
                parishName,
                settlementName,
                streetAddress,
                route,
                streetNumber,
                postCode;

            // clear existing values
            elStreet.val(null);
            elPostCode.val(null);

            $(result.address_components).each(function() {
                if ($.inArray('street_address', this.types) >= 0) {
                    streetAddress = this.long_name;
                }
                else if ($.inArray('route', this.types) >= 0) {
                    route = this.long_name;
                }
                else if ($.inArray('street_number', this.types) >= 0) {
                    streetNumber = this.long_name;
                }
                else if ($.inArray('postal_code', this.types) >= 0) {
                    postCode = this.long_name;
                }
                else if ($.inArray('locality', this.types) >= 0) {
                    settlementName = this.long_name;
                }
                else if ($.inArray('administrative_area_level_1', this.types) >= 0) {
                    countyName = this.long_name || '';
                    countyName = countyName.replace(' County', '');

                    // Google started returning "Harju maakond" instead of "Harju" recently, so county matching broke.
                    // Strip maakond from the end here
                    countyName = countyName.replace(' maakond', '');

                    // hack to match EHAK
                    if (countyName == 'Saaremaa') countyName = 'Saare';
                    else if (countyName == 'Hiiumaa') countyName = 'Hiiu';
                }
                else if ($.inArray('administrative_area_level_2', this.types) >= 0) {
                    parishName = this.long_name || '';
                    parishName = parishName.replace(' vald', '').replace(' Parish', '');
                }
            });

            // Function to finalize reverse geocode when we have found matching EHAK entities
            var ehakFoundCallback = function(county, city, village, borough, parish, street, postcode) {
                elCountyId.val(county.Id);
                elCountyName.val(county.Name);

                if (city != null) {
                    elCityId.val(city.Id);
                    elCityName.val(city.Name);
                    updateSelect2(elSelect2, city.Name);
                }
                else {
                    elCityId.val('');
                    elCityName.val('');
                }

                if (village != null) {
                    elVillageId.val(village.Id);
                    elVillageName.val(village.Name);
                    updateSelect2(elSelect2, village.Name);
                }
                else {
                    elVillageId.val('');
                    elVillageName.val('');
                }

                if (borough != null) {
                    elBoroughId.val(borough.Id);
                    elBoroughName.val(borough.Name);
                    updateSelect2(elSelect2, borough.Name);
                }
                else {
                    elBoroughId.val('');
                    elBoroughName.val('');
                }

                if (parish != null) {
                    elParishId.val(parish.Id);
                    elParishName.val(parish.Name);
                    updateSelect2(elSelect2, parish.Name);
                }
                else {
                    elParishId.val('');
                    elParishName.val('');
                }

                elStreet.val(street);
                elPostCode.val(postcode);

                if (options.elLocationName != null) {
                    // If user has already entered a new location name, it will equal the value of the <option>
                    var locationName = options.elLocationName.val();
                    if ((locationName == null || locationName === '') || (locationName != options.elLocationName.find('option:selected').text())) {
                        updateSelect2(options.elLocationName, street || (village != null ? village.Name : null) || (city != null ? city.Name : null) || (borough != null ? borough.Name : null) || (parish != null ? parish.Name : null));
                    }
                }
            };

            // map names to EHAK entities
            var county = null,
                city = null,
                village = null,
                borough = null,
                parish = null,
                street = null;

            // street
            if (streetAddress)
                street = streetAddress;
            else if (route) {
                if (streetNumber)
                    route += ' ' + streetNumber;

                street = route;
            }

            if (countyName) {
                // Get County
                $.getJSON(options.urls.countyByName,
                    { name: countyName },
                    function(data) {
                        if (data) {
                            county = data;

                            // Get City
                            $.getJSON(options.urls.cityByName,
                                { name: settlementName, countyId: county.Id },
                                function(data) {
                                    if (data) {
                                        city = data;
                                        ehakFoundCallback(county, city, village, borough, parish, street, postCode);
                                    }
                                    else {
                                        // Could not find City, try Village next
                                        $.getJSON(options.urls.villageByName,
                                            { name: settlementName, countyId: county.Id },
                                            function(data) {
                                                if (data) {
                                                    village = data;
                                                    ehakFoundCallback(county, city, village, borough, parish, street, postCode);
                                                }
                                                else {
                                                    // Could not find Village, try Borough next
                                                    $.getJSON(options.urls.boroughByName,
                                                        { name: settlementName, countyId: county.Id },
                                                        function(data) {
                                                            if (data) {
                                                                borough = data;
                                                                ehakFoundCallback(county, city, village, borough, parish, street, postCode);
                                                            }
                                                            else {
                                                                // Could not find Borough, try Parish next
                                                                $.getJSON(options.urls.parishByName,
                                                                    { name: settlementName, countyId: county.Id },
                                                                    function(data) {
                                                                        if (data) {
                                                                            parish = data;
                                                                            ehakFoundCallback(county, city, village, borough, parish, street, postCode);
                                                                        }
                                                                        else {
                                                                            alert('Ei suuda asukohta tuvastada');
                                                                        }
                                                                    });
                                                            }
                                                        });
                                                }
                                            });


                                    }
                                });
                        }
                    });
            }
            else {
                alert('Ei suuda asukohta tuvastada');
            }
        };

        /**
         * Update fields from Location entity
         *
         * @param location     Location.AddressView
         * @param coordinates  Location.CoordinatesView
         * @param locationId   Location ID
         */
        this.updateFromLocation = function(location, coordinates = null, locationId = null) {
            if (!location)
                return;

            elCountyId.val(location.CountyId || '');
            elCountyName.val(location.CountyName || '');
            elCityId.val(location.CityId || '');
            elCityName.val(location.CityName || '');
            elVillageId.val(location.VillageId || '');
            elVillageName.val(location.VillageName || '');
            elBoroughId.val(location.BoroughId || '');
            elBoroughName.val(location.BoroughName || '');
            elParishId.val(location.ParishId || '');
            elParishName.val(location.ParishName || '');

            if (location.CityId != null)
                updateSelect2(elSelect2, location.CityName);
            else if (location.VillageId != null)
                updateSelect2(elSelect2, location.VillageName);
            else if (location.BoroughId != null)
                updateSelect2(elSelect2, location.BoroughName);
            else if (location.ParishId != null)
                updateSelect2(elSelect2, location.ParishName);

            if (locationId) {
                $('#LocationId').val(locationId);
                $('#LocationName').val(locationId);
            }

            elStreet.val(location.Street);
            elPostCode.val(location.PostCode);

            elCountryId.val(location.CountryId);

            if (coordinates) {
                elLat.val(coordinates.Lat);
                elLng.val(coordinates.Lng);
            }
            else {
                elLat.val('');
                elLng.val('');
            }

            if (options.updateMapOnChange && typeof (updateMapFromLocation) !== 'undefined')
                updateMapFromLocation();
        };
    });
};