Custom Bridge menu selection

[Polycontrast]

My Bridge app has a custom top menu with submenu items. Each submenu item calls a separate Photoshop script.

For example:

My Bridge Menu                         Call

-- New Project Scaffold      ->     projectScaffold.jsx

-- File Prep                         ->      filePrep.jsx

-- File Versioning                ->      fileVersioning.jsx

-- Layer Assembly              ->      layerAssembly.jsx   

I am considering  consolidating the Photoshop scripts into one and having the Bridge submenu items call a specific function in the comb Photoshop script.

For example:

My Bridge Menu                          Call                                   Function

-- New Project Scaffold      ->     comboScript.jsx      ->      projectScaffold( );

-- File Prep                         ->      comboScript.jsx      ->      filePrep( );

-- File Versioning                ->      comboScript.jsx      ->      fileVersioning( );

-- Layer Assembly              ->      comboScript.jsx      ->      layerAssembly( );

If possible, can the script() function below,  call the projectScaffold( ) function in the Photoshop comboScript.jsx ? 

If so how I do modify the script function?

projectScaffold.onSelect  = function () {   

  function script(){  

      var scriptName = "comboScript.jsx";  

      var f = File(app.path + "/presets/scripts/" + scriptName); 

      $.evalFile(f); 

  } 

  var bt = new BridgeTalk;  

  bt.target = "photoshop";  

  bt.body = " ftn = " + script.toSource() + "; ftn();"; 

  bt.send(8);    

};

[SuperMerlin · Accepted solution]

Okay this is an example of the Photoshop comboScript.jsx

#target photoshop;
app.bringToFront();
main();
function main(){
if($.getenv("BridgeSelection") == null){
alert("No Bridge Selection has been made!");
return;
}    
var Selection = $.getenv("BridgeSelection");
$.setenv("BridgeSelection","");
switch (Number(Selection)){
    case 1 :  projectScaffold(); break;
    case 2 :  filePrep(); break;
    case 3 :  fileVersioning(); break;
    case 4 :  layerAssembly();  break;
    default : break;
    }
};
function projectScaffold(){
    alert("projectScaffold");
};
function filePrep(){
    alert("filePrep");
};
function fileVersioning(){
    alert("fileVersioning");
};
function layerAssembly(){
    alert("layerAssembley");
}

Here are the Bridge examples...

/////////////////////////////////////////////////////////////////////
projectScaffold.onSelect  = function () {    
  function script(){  
      /* projectScaffold */
      /*sets a variable in Photoshop */
     $.setenv("BridgeSelection","1"); 
      var scriptName = "comboScript.jsx";  
      var f = File(app.path + "/presets/scripts/" + scriptName);
      $.evalFile(f); 
  } 
  var bt = new BridgeTalk;  
  bt.target = "photoshop";  
  bt.body = " ftn = " + script.toSource() + "; ftn();"; 
  bt.send(8);  
  }
  /////////////////////////////////////////////////////////////////////
  filePrep.onSelect  = function () { 
    function script(){  
      /* filePrep */
     $.setenv("BridgeSelection","2"); 
      var scriptName = "comboScript.jsx";  
      var f = File(app.path + "/presets/scripts/" + scriptName);
      $.evalFile(f); 
  } 
  var bt = new BridgeTalk;  
  bt.target = "photoshop";  
  bt.body = " ftn = " + script.toSource() + "; ftn();"; 
  bt.send(8);   
  }
  //////////////////////////////////////////////////////////////////////////
  fileVersioning.onSelect  = function () { 
      function script(){  
      /* fileVersioning*/
     $.setenv("BridgeSelection","3"); 
      var scriptName = "comboScript.jsx";  
      var f = File(app.path + "/presets/scripts/" + scriptName);
      $.evalFile(f); 
  } 
  var bt = new BridgeTalk;  
  bt.target = "photoshop";  
  bt.body = " ftn = " + script.toSource() + "; ftn();"; 
  bt.send(8);   
  }
  //////////////////////////////////////////////////////////////////////////
  layerAssembly.onSelect  = function () { 
        function script(){  
      /* layerAssembly */
     $.setenv("BridgeSelection","4"); 
      var scriptName = "comboScript.jsx";  
      var f = File(app.path + "/presets/scripts/" + scriptName);
      $.evalFile(f); 
  } 
  var bt = new BridgeTalk;  
  bt.target = "photoshop";  
  bt.body = " ftn = " + script.toSource() + "; ftn();"; 
  bt.send(8);   
  }
  //////////////////////////////////////////////////////////////////////////

[Polycontrast]

The solution looks super! Clean and easy to follow. But not something I would have been able to figure out on my own. Thank you again SuperMerlin for taking the time to answer my questions in the past and now. I will apply the code in the next couple of days. 

[Polycontrast]

Works impeccable in PSCC 2018 and OSX High Sierra. Many thanks again!