var calendars = [];
var selectedCalendar = null;
var selectedCalendarName = '';
var pickerData = [];

var win = Ti.UI.createWindow({
  backgroundColor: 'white',
  exitOnClose: true,
  fullscreen: false,
  layout: 'vertical',
  title: 'TIMOB-8085'
});

var scrollView = Ti.UI.createScrollView({
  backgroundColor: '#eee',
  height: 500,
  top: 20
});

var label = Ti.UI.createLabel({
  backgroundColor: 'white',
  text: 'Click on the button to display the events for the selected calendar',
  textAlign: Ti.UI.TEXT_ALIGNMENT_CENTER,
  top: 20
});
scrollView.add(label);

var selectableCalendars = Ti.Android.Calendar.selectableCalendars;
for (var i = 0; i< selectableCalendars.length; i++) {
	
  	calendars.push({ name: selectableCalendars[i].name, calendarObj: selectableCalendars[i] });
 	pickerData.push( Ti.UI.createPickerRow({ title: calendars[i].name }) );
  
  	if(i === 0){
  		selectedCalendar = selectableCalendars[i];
  	}
}

if(!calendars.length){
  label.text = 'No calendars available. Select at least one in the native calendar before using this app';
} else {
  	label.text = 'Click button to view calendar events';
  
  	var picker = Ti.UI.createPicker({
  	  top:20
  	});
  	
  	picker.add(pickerData);
  	win.add(picker);
  
  	picker.addEventListener('change', function(e){
    	selectedCalendar = calendars[e.rowIndex].calendarObj;
  	});

	var button = Ti.UI.createButton({
	    title: 'View events',
	    top: 20
	});
	win.add(button);
  
	button.addEventListener('click', function(e){
  		label.text = '';
    	label.text = 'Generating...';
    
    	var cal_events = selectedCalendar.getEventsBetweenDates(new Date(1990, 1, 0), new Date(2100, 31, 11));
    	label.text = cal_events.length > 0 ? '' : 'No events.'; 
    	for (var j=0; j < cal_events.length; j++) {
	        label.text += 'Description: ' + cal_events[j].description + '\n';
	        label.text += 'Start Date: ' + JSON.stringify(cal_events[j].begin) + '\n';
	        label.text += 'End Date: ' + JSON.stringify(cal_events[j].end) + '\n';
	        label.text += '\n';
    	}
    
  	});
}

win.add(scrollView);

win.open();