/*
 * jQuery geo_autocomplete plugin 2.1.1
 *
 * Copyright (c) 2010 Bob Hitching
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Requires jQuery UI Autocomplete
 * 
 */
function getCountryCode(country) {
    switch (country) {
        case 'andorra' :
            return 'AD';
        case 'belgien' :
            return 'BE';
        case 'dänemark' :
            return 'DK';
        case 'deutschland' :
            return 'DE';
        case 'england' :
            return 'GB';
        case 'frankreich' :
            return 'FR';
        case 'gh. luxemburg' :
            return 'LU';
        case 'irland' :
            return 'IE';
        case 'italien' :
            return 'IT';
        case 'kanal-inseln' :
            return 'GB';
        case 'liechtenstein' :
            return 'LI';
        case 'niederlande' :
            return 'NL';
        case 'österreich' :
            return 'AT';
        case 'polen' :
            return 'PL';
        case 'portugal' :
            return 'PT';
        case 'schottland' :
            return '';
        case 'schweiz' :
            return 'CH';
        case 'slowakei' :
            return 'SK';
        case 'spanien' :
            return 'ES';
        case 'tschechische republik' :
            return 'CZ';
        case 'ungarn' :
            return 'HU';
        case 'wales' :
            return 'GB';
    }           
}

$.widget( "ui.geo_autocomplete", {
	// setup the element as an autocomplete widget with some geo goodness added        
	_init: function() {                
		this.options._geocoder = new google.maps.Geocoder; // geocoder object
		this.options._cache = {}; // cache of geocoder responses
		this.element.autocomplete(this.options);
		
		// _renderItem is used to prevent the widget framework from escaping the HTML required to show the static map thumbnail
		this.element.data('autocomplete')._renderItem = function(_ul, _item) {
			return $('<li></li>').data('item.autocomplete', _item).append(this.options.getItemHTML(_item)).appendTo(_ul);
		};
	},
	
	// default values
	options: {
		geocoder_region: '', // filter to a specific region, e.g. 'Europe'                
		geocoder_types: 'locality,political,sublocality,neighborhood,country', // array of acceptable location types, see http://code.google.com/apis/maps/documentation/javascript/services.html#GeocodingAddressTypes
		geocoder_address: false, // true = use the full formatted address, false = use only the segment that matches the search term

		mapwidth: 100, // width of static map thumbnail
		mapheight: 100, // height of static map thumbnail
		maptype: 'terrain', // see http://code.google.com/apis/maps/documentation/staticmaps/#MapTypes
		mapsensor: false, // see http://code.google.com/apis/maps/documentation/staticmaps/#Sensor

		minLength: 3, // see http://jqueryui.com/demos/autocomplete/#option-minLength
		delay: 300, // see http://jqueryui.com/demos/autocomplete/#option-delay
		// callback function to get autocomplete results
		source: function(_request, _response) {
			if ($('#country :selected').text().toLowerCase() + '.' + _request.term in this.options._cache) {
                            _response(this.options._cache[$('#country :selected').text().toLowerCase() + '.' + _request.term]);
			} else {
				var self = this;                                                                                                            
                                
                                this.options.geocoder_region = getCountryCode($('#country :selected').text().toLowerCase());
                                                                                                
				var _address = _request.term + (this.options.geocoder_region ? ', ' + this.options.geocoder_region : '');
				this.options._geocoder.geocode({'address': _address}, function(_results, _status) {
					var _parsed = [];
					if (_results && _status && _status == 'OK') {
						var _types = self.options.geocoder_types.split(',');
                                                var setFirst = false
						$.each(_results, function(_key, _result) {
							// if this is an acceptable location type with a viewport, it's a good result
							if ($.map(_result.types, function(_type) {
								return $.inArray(_type, _types) != -1 ? _type : null;
							}).length && _result.geometry && _result.geometry.viewport && _result.geometry.location) {

								if (self.options.geocoder_address) {
									_place = _result.formatted_address;
								} else {
									// place is first matching segment, or first segment
									var _place_parts = _result.formatted_address.split(',');
									var _place = _place_parts[0];
									$.each(_place_parts, function(_key, _part) {
										if (_part.toLowerCase().indexOf(_request.term.toLowerCase()) != -1) {
											_place = $.trim(_part);
											return false; // break
										}
									});
								}                                                                                                                                
                                                                
                                                                if (_result.formatted_address.toLowerCase().indexOf($('#country :selected').text().toLowerCase()) != -1) {
                                                                    if (setFirst == false) {                                                                        
                                                                        setFirst = true;
                                                                        $("#slat").val(_result.geometry.location.lat());
                                                                        $("#slng").val(_result.geometry.location.lng())
                                                                    }
                                                                    _parsed.push({
                                                                        	value: _place,
                                                                                label: _result.formatted_address,
                                                                                viewport: _result.geometry.viewport,
                                                                                location: _result.geometry.location
                                                                    });
                                                                }
							}
						});
					}
					self.options._cache[$('#country :selected').text().toLowerCase() + '.' +_request.term] = _parsed;
					_response(_parsed);
				});
			}
		},
		// returns the HTML used for each autocomplete list item
		getItemHTML: function(_item) {		
			var _src = 'http://maps.google.com/maps/api/staticmap?visible=' + _item.viewport.getSouthWest().toUrlValue() + '|' + _item.viewport.getNorthEast().toUrlValue() + '&size=' + this.mapwidth + 'x' + this.mapheight + '&maptype=' + this.maptype + '&sensor=' + (this.mapsensor ? 'true' : 'false');
			return '<a><img style="float:left;margin-right:5px;" src="' + _src + '" width="' + this.mapwidth + '" height="' + this.mapheight + '" /> ' + _item.label.replace(/,/gi, ',<br/>') + '<br clear="both" /></a>'
		},
                // we need this to avoid ui problem with slider and autocomplete in same form.
                open: function(event, ui) { $(".ui-slider-handle").css("z-index", -1); },
                close: function(event, ui) { $(".ui-slider-handle").css("z-index", 2); }
	}
});