Ext.require('Ext.chart.*');
Ext.require(['Ext.Window', 'Ext.fx.target.Sprite', 'Ext.layout.container.Fit', 'Ext.window.MessageBox']);

Ext.onReady(function () {
    var chart = Ext.create('Ext.chart.Chart', {
            style: 'background:#fff',
            animate: true,
            shadow: true,
            store: store1,
            legend: {
              position: 'right'  
            },
            axes: [{
                type: 'Numeric',
                position: 'bottom',
                fields: ['data1', 'data2', 'data3'],
                minimum: 0,
                label: {
                    renderer: Ext.util.Format.numberRenderer('0,0')
                },
                grid: true,
                title: 'Number of Hits'
            }, {
                type: 'Category',
                position: 'left',
                fields: ['name'],
                title: 'Month of the Year'
            }],
            series: [{
                type: 'bar',
                axis: 'bottom',
                xField: 'name',
                yField: ['data1', 'data2', 'data3']
            }]
        });


    var win = Ext.create('Ext.Window', {
        width: 800,
        height: 600,
        minHeight: 400,
        minWidth: 550,
        hidden: false,
        maximizable: true,
        title: 'Grouped Bar Chart',
        autoShow: true,
        layout: 'fit',
        tbar: [{
            text: 'Save Chart',
            handler: function() {
                Ext.MessageBox.confirm('Confirm Download', 'Would you like to download the chart as an image?', function(choice){
                    if(choice == 'yes'){
                        chart.save({
                            type: 'image/png'
                        });
                    }
                });
            }
        }, {
            text: 'Reload Data',
            handler: function() {
                // Add a short delay to prevent fast sequential clicks
                window.loadTask.delay(100, function() {
                    store1.loadData(generateData());
                });
            }
        }, {
            enableToggle: true,
            pressed: true,
            text: 'Animate',
            toggleHandler: function(btn, pressed) {
                chart.animate = pressed ? { easing: 'ease', duration: 500 } : false;
            }
        }],
        items: chart
    });
});
