///////////////////////////
//SET-UP /USER VARIABLES
///////////////////////////

//Localized path to the Plug-Ins folder
var strPlugInsFolderDirectory = localize( "$$$/LocalizedFilenames.xml/SourceDirectoryName/id/Extras/[LOCALE]/[LOCALE]_Plug-ins/value=Plug-ins" );

//The Path to the action you want to install
var actionFile = File(app.path.toString() + "/"  + strPlugInsFolderDirectory + "/Panels/PanosFX/content/The%20BnBig%20picture.atn" );

//The Action Set Name
var actionSet =  "The BnBig picture";

//The Action Name
var action =  "THE ACTION";

///////////////////////////
//       FUNCTIONS
///////////////////////////

var actionLoaded = false;//  Set actionLoaded to false until we find a match

// Functions to get the list of action sets currently installed
cTID = function( s ) { return app.charIDToTypeID( s ); }; 

getActionSets = function() { 
  var i = 1; 
  var sets = [ ]; 
  while ( true ) { 
    var ref = new ActionReference(); 
    ref.putIndex( cTID( "ASet" ), i ); 
    var desc; 
    var lvl = $.level; 
    $.level = 0; 
    try { 
      desc = executeActionGet( ref ); 
    } catch ( e ) { 
      break;    // all done 
    } finally { 
      $.level = lvl; 
    } 
    if ( desc.hasKey( cTID( "Nm  " ) ) ) { 
      var set = { }; 
      set.index = i; 
      set.name = desc.getString( cTID( "Nm  " ) ); 
      set.toString = function( ) { return this.name; }; 
      set.count = desc.getInteger( cTID( "NmbC" ) ); 
      set.actions = [ ]; 
      for ( var j = 1; j <= set.count; j++ ) { 
        var ref = new ActionReference( ); 
        ref.putIndex( cTID( 'Actn' ), j ); 
        ref.putIndex( cTID( 'ASet' ), set.index ); 
        var adesc = executeActionGet( ref ); 
        var actName = adesc.getString( cTID( 'Nm  ' ) ); 
        set.actions.push( actName ); 
      } 
      sets.push( set ); 
    } 
    i++; 
  } 
  return sets; 
}; 

var sets = getActionSets( );// get users actions sets 

// walk through the layer sets
for (i=0; i<sets.length; i+=1) {
	if(sets[i] == actionSet){
		//If we find a match set it to true
		actionLoaded = true;
	} //If not, then actionLoaded remains false
}

if(actionLoaded == true){ // if the action is loaded....
		try{
			// ...then run the action
			doAction(action, actionSet);
		}catch(e){
			//catch user cancellations. We don't want an error in Photoshop for the user stopping the action from one of the action Stop commands
		}
	}else{ // Otherwise the action isn't loaded
		try{
			// ...so load the action...
			load( actionFile );
		}catch(e){
			// Photoshop complains that the open options are invalid
		}
		try{
			// ...then play it.
			doAction(action, actionSet);
		}catch(e){
			//catch user cancellations. We don't want an error in Photoshop for the user stopping the action from one of the action Stop commands
		}
}