// DESCRIPTION: Launch a script by typing its name or picking it from a resent-history list
// Peter Kahrel 2005-2008


#target indesign


// Global declarations -----------------------------------------

history_length = 15;
script_folder = script_dir()+'/';
f = File (script_folder + 'runscript-last.txt')

//--------------------------------------------------------------

main();


function main ()
	{
	script = get_script ();
	app.doScript (script)
	}


//--------------------------------------------------------------

function get_script ()
	{
	var history = get_history (f);
	var scripts = get_scripts (script_folder);
	var droplist = history.concat('------------').concat(scripts);

	var dlg = app.dialogs.add ({name: 'Launch a script'});
	with (dlg)
		with (dialogColumns.add())
			with(borderPanels.add())
				{
				staticTexts.add ({staticLabel: 'Script:'});
				with (dialogColumns.add())
					{
					var script = textEditboxes.add ({minWidth: 200});
					var dropDown = dropdowns.add ({ 
						stringList : droplist, 
						selectedIndex : 0, 
						minWidth : 200 })
					}
				}
	if (!dlg.show())
		{dlg.destroy(); exit()};
	if (script.editContents != "")	// user entered script name, use it
		{
		var scr_name = script.editContents;
		// if user didn't type extension, add it
		if (scr_name.indexOf ('.jsx') < 0)
			scr_name += '.jsx';
		script = scr_name;
		if ( !File (script_folder+script).exists)
			{
			alert ('Error: ' + scr_name + ' doesn\'t exist.');
			dlg.destroy;
			exit()
			}
		}
	else // user pressed Enter, run last-run script
		script = droplist[dropDown.selectedIndex];
	store_history (f, history, script)
	return File (script_folder+script)
	}


function get_history (f)
	{
	var h = [];
	if (f.exists)
		{
		f.open ('r');
		var temp = f.read ();
		f.close();
		var h = temp.split (/[\r\n]/);
		}
	return h
	}


function get_scripts (dir)
	{
	var array = [];
	var s = find_all (dir, dir, [], 'jsx');
	for (var i = 0; i < s.length; i++)
		array.push (s[i]);
	return array
	}
	

function store_history (f, history, new_item)
	{
//	var f = File (script_folder + history_file);
	history = insert_item (history.join('\n'), new_item)
	f.open ('w');
	f.write (history);
	f.close ()
	}


function insert_item (s, item)
	{
	s = '\n' + s + '\n';
	s = item + s.replace ('\n'+item+'\n', '\n');
	s = clip (s);
	return s.replace (/\n$/, "");
	}


function clip (s)
	{
	if (s.match (/\n/g).length > history_length)
		s = s.replace (/\n[^\n]+\n$/, "\n");
	return s
	}


// Remove comments to include subdirectories
function find_all (scriptdir, dir, array, mask)
	{
	var f = Folder (dir).getFiles ('*.*');
	for (var i = 0; i < f.length; i++)
//		if (f[i] instanceof Folder)
//			find_all (scriptdir, f[i], array, mask);
//		else
			if (f[i].name.slice (-mask.length) == mask)
				array.push (f[i].fullName.slice (scriptdir.length));
	return array;
	}


function script_dir()
	{
	try {return File (app.activeScript).path.replace (/%20/g, ' ')}
	catch (e) {return File (e.fileName).path.replace (/%20/g, ' ')}
	}