var doc = app.activeDocument;
var sdate = new Date();




var dlg = new Window('dialog', 'Calendar Setup');
dlg.add('statictext', undefined, 'Month');
mInput = dlg.add('edittext', undefined, sdate.getMonth()+1 );

dlg.add('statictext', undefined, 'Year');
yInput = dlg.add('edittext', undefined, sdate.getFullYear());

var crButton = dlg.add('button', undefined, 'Create');

var m = 6;
var y = 2011;
var bounds = doc.activeLayer.bounds;

crButton.onClick = function(){
   
    this.enabled = false;
	y = Number(yInput.text) //num
	m = Number(mInput.text) //num
	    
    drawCal(y, m, bounds);  
    dlg.hide();

    
	
}

 if (doc.activeLayer.kind != LayerKind.SOLIDFILL){
    alert('Ups, try to create solid shape layer and run script again.')
 }
else {dlg.show();}




function drawCal(y, m, bounds){
    
    var date = new Date();
    date.setFullYear(y, m, 0);
    days = date.getDate();
    lDay = date.getDay();
    date.setDate (1)
    fDay = date.getDay();
    
    if (m == 1){
        date.setFullYear(y-1, 12, 0);
     }
 else{
        date.setFullYear(y, m-1, 0);
     }
     prevDays =    date.getDate();
    
    
    if (fDay == 0){
        var allDays = days+6
    }
    else{
        var allDays = days+(fDay-1)
    }
    if (lDay != 0){
        var allDays = days+(7-lDay)
    }

    var lines = allDays/7
    var iter = 0;
    var array = new Array;
    
    if (fDay == 0){
        for (var i=0; i<6; i++){
            array.push (  (prevDays-5+i).toString()  )
        }
    }
    else{
        for (var i=0; i<fDay-1; i++){
            array.push (  ( prevDays-(fDay-2)+i).toString()  )
        }
    }
    for (i=0; i<days; i++){
        array.push (  (i+1).toString()  )
    }
    if (lDay != 0){
        for (i=0;i<7-lDay; i++){
            array.push (  (i+1).toString()  )
        }
    }
    
    var str = new String;
    for (i=0; i<array.length/7; i++){
        for (var j=0; j<7; j++){
            drawDay(     Array(   ((bounds[2]-bounds[0])/6)*j +bounds[0], ((bounds[3]-bounds[1])/((array.length/7)-1))*i+bounds[1]  )    , array[i*7+j]   )
            
        }
    }
    
}
function drawDay(bound, text){
    
    var textLayerRef = doc.artLayers.add()
    textLayerRef.name = 'cal_'+text
    textLayerRef.kind = LayerKind.TEXT
    var textItemRef = doc.artLayers['cal_'+text].textItem
    
    textItemRef.position = bound
     
    textItemRef.contents = text
    textItemRef.justification = Justification.LEFT
}