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

Ext.onReady(function () {
    var textArea;
    
    Ext.define('Ext.chart.theme.CustomBlue', {
        extend: 'Ext.chart.theme.Base',
        
        constructor: function(config) {
            var titleLabel = {
                font: 'bold 18px Arial'
            }, axisLabel = {
                fill: 'rgb(8,69,148)',
                font: '12px Arial',
                spacing: 2,
                padding: 5
            };
            
            this.callParent([Ext.apply({
               axis: {
                   stroke: '#084594'
               },
               axisLabelLeft: axisLabel,
               axisLabelBottom: axisLabel,
               axisTitleLeft: titleLabel,
               axisTitleBottom: titleLabel
           }, config)]);
        }
    });
    
    var chart = Ext.create('Ext.chart.Chart', {
            animate: true,
            shadow: true,
            store: store1,
            axes: [{
                type: 'Numeric',
                position: 'bottom',
                fields: ['data1'],
                label: {
                    renderer: Ext.util.Format.numberRenderer('0,0')
                },
                title: 'Number of Hits',
                grid: true,
                minimum: 0
            }, {
                type: 'Category',
                position: 'left',
                fields: ['name'],
                title: 'Month of the Year'
            }],
            theme: 'CustomBlue',
            background: {
              gradient: {
                id: 'backgroundGradient',
                angle: 45,
                stops: {
                  0: {
                    color: '#ffffff'
                  },
                  100: {
                    color: '#eaf1f8'
                  }
                }
              }
            },
            series: [{
                type: 'bar',
                axis: 'bottom',
                highlight: true,
                tips: {
                  trackMouse: true,
                  width: 140,
                  height: 28,
                  renderer: function(storeItem, item) {
                    this.setTitle(storeItem.get('name') + ': ' + storeItem.get('data1') + ' views');
                  }
                },
                label: {
                  display: 'insideEnd',
                    field: 'data1',
                    renderer: Ext.util.Format.numberRenderer('0'),
                    orientation: 'horizontal',
                    color: '#333',
                  'text-anchor': 'middle'
                },
                xField: 'name',
                yField: ['data1']
            }]
        });
        
    var win = Ext.create('Ext.window.Window', {
        width: 800,
        height: 600,
        minHeight: 400,
        minWidth: 550,
        hidden: false,
        maximizable: true,
        title: '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());
                });
            }
        }],
        items: chart
    });
});