/**
 * @package BasicGoogleMapsPlacemarks
 * @author Ian Dunn <ian@iandunn.name>
 * @link http://wordpress.org/extend/plugins/basic-google-maps-placemarks/
 */


/**
 * Wrapper function to safely use $
 * @author Ian Dunn <ian@iandunn.name>
 */
function bgmp_wrapper( $ )
{
    // @todo - figure out if wrapper bad for memory consumption (https://developer.mozilla.org/en/JavaScript/Reference/Functions_and_function_scope#Efficiency_considerations)
        // ask on stackoverflow

    $.bgmp =
    {
        /**
         * Main entry point
         * @author Ian Dunn <ian@iandunn.name>
         */
        init : function()
        {
            $.bgmp.name                 = 'Basic Google Maps Placemarks';
            $.bgmp.canvas               = document.getElementById( 'bgmp_map-canvas' );     // We have to use getElementById instead of a jQuery selector here in order to pass it to the Maps API.
            $.bgmp.previousInfoWindow   = undefined;
            $.bgmp.map                  = undefined;
            $.bgmp.markerClusterer      = undefined;
            $.bgmp.markers              = [];

            // @todo make this loop through array instead of manual. also add any other numbers
            bgmpData.options.zoom                   = parseInt( bgmpData.options.zoom ),
            bgmpData.options.latitude               = parseFloat( bgmpData.options.latitude );
            bgmpData.options.longitude              = parseFloat( bgmpData.options.longitude );
            bgmpData.options.clustering.maxZoom     = parseInt( bgmpData.options.clustering.maxZoom );
            bgmpData.options.clustering.gridSize    = parseInt( bgmpData.options.clustering.gridSize );

            if( $.bgmp.canvas )
                $.bgmp.buildMap();
            else
                $( $.bgmp.canvas ).html( $.bgmp.name + " error: couldn't retrieve DOM elements." );
        },

        /**
         * Pull in the map options from Wordpress' database and create the map
         * @author Ian Dunn <ian@iandunn.name>
         */
        buildMap : function()
        {
            var mapOptions;

            if( bgmpData.options.mapWidth == '' || bgmpData.options.mapHeight == '' || bgmpData.options.latitude == '' || bgmpData.options.longitude == '' || bgmpData.options.zoom == '' || bgmpData.options.infoWindowMaxWidth == '' )
            {
                // @todo update w/ cluster options?

                $( $.bgmp.canvas ).html( $.bgmp.name + " error: map options not set." );
                return;
            }

            mapOptions =
            {
                'zoom'                      : bgmpData.options.zoom,
                'center'                    : new google.maps.LatLng( bgmpData.options.latitude, bgmpData.options.longitude ),
                'mapTypeId'                 : google.maps.MapTypeId[ bgmpData.options.type ],
                'mapTypeControl'            : bgmpData.options.typeControl == 'off' ? false : true,
                'mapTypeControlOptions'     : { style: google.maps.MapTypeControlStyle[ bgmpData.options.typeControl ] },
                'navigationControl'         : bgmpData.options.navigationControl == 'off' ? false : true,
                'navigationControlOptions'  : { style: google.maps.NavigationControlStyle[ bgmpData.options.navigationControl ] },
                'streetViewControl'         : bgmpData.options.streetViewControl
            };

            // Override default width/heights from settings
            $( '#bgmp_map-canvas' ).css( 'width', bgmpData.options.mapWidth );      // @todo use $.bgmp.canvas intead of hardcoding it?
            $( '#bgmp_map-canvas' ).css( 'height', bgmpData.options.mapHeight );
            // @todo this prevents users from using their own stylesheet?


            // Create the map
            try
            {
                $.bgmp.map = new google.maps.Map( $.bgmp.canvas, mapOptions );
            }
            catch( e )
            {
                $( $.bgmp.canvas ).html( $.bgmp.name + " error: couln't build map." );
                if( window.console )
                    console.log( 'bgmp_buildMap: '+ e );

                return;
            }

            $.bgmp.addPlacemarks( $.bgmp.map );     // @todo not supposed to add them when clustering is enabled? http://www.youtube.com/watch?v=Z2VF9uKbQjI

            if( bgmpData.options.clustering.enabled )
            {
                $.bgmp.markerCluster = new MarkerClusterer(     // @todo should be .markerClusterer ?
                    $.bgmp.map,
                    $.bgmp.markers,
                    {
                        maxZoom     : bgmpData.options.clustering.maxZoom,
                        gridSize    : bgmpData.options.clustering.gridSize,
                        styles      : bgmpData.options.clustering.styles[ bgmpData.options.clustering.style ]
                    }
                );
            }
        },

        /**
         * Checks if the value is an integer. Slightly modified version of original.
         * @author Invent Partners
         * @link http://www.inventpartners.com/content/javascript_is_int
         * @param mixed value
         * @return bool
         */
        isInt : function( value )
        {
            if( !isNaN( value ) && parseFloat( value ) == parseInt( value ) )
                return true;
            else
                return false;
        },

        /**
         * Pull the placemark posts from Wordpress' database and add them to the map
         * @author Ian Dunn <ian@iandunn.name>
         * @param object map Google Maps map
         */
        addPlacemarks : function( map )
        {
            // @todo - should probably refactor this since you pulled out the ajax. update phpdoc too

            if( bgmpData.markers.length > 0 )
            {
                for( var m in bgmpData.markers )
                {
                    $.bgmp.createMarker(
                        map,
                        bgmpData.markers[ m ][ 'title' ],
                        bgmpData.markers[ m ][ 'latitude' ],
                        bgmpData.markers[ m ][ 'longitude' ],
                        bgmpData.markers[ m ][ 'details' ],
                        bgmpData.markers[ m ][ 'icon' ],
                        parseInt( bgmpData.markers[ m ][ 'zIndex' ] ),
                        bgmpData.markers[ m ][ 'categories' ]
                    );
                }
            }
        },

        /**
         * Create a marker with an information window
         * @author Ian Dunn <ian@iandunn.name>
         * @param object map Google Maps map
         * @param string title Placemark title
         * @param float latituded
         * @param float longitude
         * @param string details Content of the infowinder
         * @param string icon URL of the icon
         * @param int zIndex The desired position in the placemark stacking order
         * @return bool True on success, false on failure
         * @param category array
         */
        createMarker : function( map, title, latitude, longitude, details, icon, zIndex, categories )
        {
            // @todo - clean up variable names

            var infowindowcontent, infowindow, marker;

            if( isNaN( latitude ) || isNaN( longitude ) )
            {
                if( window.console )
                    console.log( "bgmp_createMarker(): "+ title +" latitude and longitude weren't valid." );

                return false;
            }

            if( icon == null )
            {
                // @todo - this check may not be needed anymore

                if( window.console )
                    console.log( "bgmp_createMarker(): "+ title +"  icon wasn't passed in." );
                return false;
            }

            if( !$.bgmp.isInt( zIndex ) )
            {
                //if( window.console )
                    //console.log( "bgmp_createMarker():  "+ title +" z-index wasn't valid." ); // this would fire any time it's empty

                zIndex = 0;
            }

            infowindowcontent = '<div class="bgmp_placemark"> <h3>'+ title +'</h3> <div>'+ details +'</div> </div>';

            try
            {
                infowindow = new google.maps.InfoWindow( {
                    content     : infowindowcontent,
                    maxWidth    : bgmpData.options.infoWindowMaxWidth
                } );

                // Replace commas with periods. Some (human) languages use commas to delimit the fraction from the whole number, but Google Maps doesn't accept that.
                latitude = parseFloat( latitude.replace( ',', '.' ) );
                longitude = parseFloat( longitude.replace( ',', '.' ) );

                marker = new google.maps.Marker( {
                    'position'  : new google.maps.LatLng( latitude, longitude ),
                    'map'       : map,
                    'icon'      : icon,
                    'title'     : title,
                    'zIndex'    : zIndex
                } );

                for (var s in categories) {
                    title = categories[s]['name'];
                    if (!$.bgmp.markers[title]){
                        //window.alert('$.bgmp.markers['+title+']not Array, creating it');
                        $.bgmp.markers[title] = [];
                    }
                    $.bgmp.markers[title].push(marker);
                }
                $.bgmp.markers.push( marker );

                google.maps.event.addListener( marker, 'click', function()
                {
                    if( $.bgmp.previousInfoWindow != undefined )
                        $.bgmp.previousInfoWindow.close();

                    infowindow.open( map, marker );
                    $.bgmp.previousInfoWindow = infowindow;
                } );

                return true;
            }
            catch( e )
            {
                //$( $.bgmp.canvas ).append( '<p>' + $.bgmp.name + " error: couldn't add map placemarks.</p>");     // add class for making red? other places need this too?    // @todo - need to figure out a good way to alert user that placemarks couldn't be added
                if( window.console )
                    console.log( 'bgmp_createMarker: '+ e );
            }
        }
    }; // end bgmp

    // Kick things off...
    $( document ).ready( $.bgmp.init );

} // end bgmp_wrapper()

bgmp_wrapper( jQuery );