wikimedia/wikimedia-fundraising-dash

define( [
    'hasher',
    'jquery',
    'knockout',
    'text!./app-content.html'
], function ( hasher, $, ko, templateMarkup ) {
    function AppContent() {
        var self = this,
            pages = [ 'Library', 'Profile', 'Home' ];

        hasher.prependHash = '';

        self.displayedBoard = ko.observable();
        self.hashValue = location.hash.substring( 1 );
        self.userBoards = ko.observableArray();
        self.userdata = ko.observable();
        self.displayedPage = ko.observable( 'Home' );
        self.loggedIn = ko.observable( false );
        self.welcome = ko.observable( '' );
        self.widgetTemplates = ko.observableArray();
        self.widgetInstances = ko.observableArray();
        self.currentBoardWidgets = ko.computed( function () {
            var widgets = [];
            if ( self.displayedBoard() ) {
                $.each( self.displayedBoard().widgets, function ( idx, widget ) {
                    widgets[ widget.widgetId ] = true;
                } );
            }
            return widgets;
        } );

        self.displayPage = function ( view ) {
            if ( pages.indexOf( view ) > -1 ) {
                self.displayedPage( view );
            } else if ( !isNaN( parseInt( view, 10 ) ) ) {
                $.get( 'board/' + view, function ( bdata ) {
                    self.displayedPage( 'Home' );
                    self.displayedBoard( bdata );
                } );
            } else {
                return false;
            }
            return true;
        };

        $.get( '/user/info', function ( userInfo ) {
            if ( userInfo && !userInfo.error ) {
                self.userdata( userInfo );
                self.welcome( userInfo.name.charAt( 0 ).toUpperCase() + userInfo.name.slice( 1 ) );
                self.loggedIn( true );
                $.get( 'board/' + self.userdata().defaultBoard, function ( moredata ) {
                    self.displayedBoard( moredata );
                    self.displayPage( self.hashValue );
                } );
                $.get( 'board/', function ( boards ) {
                    self.userBoards( boards );
                } );
            }
        } );

        self.addWidgetToBoard = function ( event /* , data */ ) {
            $.ajax( {
                method: 'POST',
                url: '/widget-instance',
                contentType: 'application/json; charset=UTF-8',
                data: JSON.stringify( {
                    widgetId: event.id,
                    displayName: 'My ' + event.displayName,
                    isShared: false
                } ),
                success: function ( data ) {
                    $.ajax( {
                        method: 'POST',
                        url: '/board/' + self.displayedBoard().id + '/widgets',
                        contentType: 'application/json; charset=UTF-8',
                        data: JSON.stringify( {
                            instanceId: data.id
                        } ),
                        success: function ( /* stuff */ ) {
                            // refresh the displayed board
                            $.get( 'board/' + self.displayedBoard().id, function ( moredata ) {
                                self.displayedBoard( moredata );
                            } );
                        }
                    } );
                }
            } );

        };

        self.removeWidgetFromBoard = function ( event /* , data */ ) {
            var removingBoard = self.displayedBoard().id;
            $.ajax( {
                method: 'DELETE',
                url: '/board/' + removingBoard + '/widgets/' + event.instanceID,
                success: function () {
                    $.get( 'board/' + removingBoard, function ( moredata ) {
                        self.displayedBoard( moredata );
                        $( '.modal-backdrop' ).remove();
                    } );
                }
            } );
        };

        self.setDisplayPage = function ( e, data ) {
            var view = data.target.id;
            hasher.setHash( view );
            if ( !self.displayPage( view ) ) {
                self.displayedPage( ( $( data.target ).text() || '' ).trim() );
            }
        };

        $.get( '/widget', function ( widgetTemplates ) {

            var wt = $.map( widgetTemplates, function ( n ) {
                n.onBoard = ko.computed( function () {
                    return ( self.currentBoardWidgets()[ n.id ] );
                } );
                return n;
            } );

            self.widgetTemplates( wt );
        } );

        self.getUsersWidgetInstances = function () {
            $.get( '/widget-instance', function ( widgetInstances ) {

                var wi = $.map( widgetInstances, function ( n ) {
                    return n;
                } );

                self.widgetInstances( wi );
            } );
        };
        self.getUsersWidgetInstances();

        self.handleChanges = function ( newHash ) {
            self.displayPage( newHash );
        };

        hasher.changed.add( self.handleChanges );
        hasher.init();
    }

    return { viewModel: AppContent, template: templateMarkup };
} );