// Moonlight|3D start script, exits with 1 on errors

// Virtual memory of the JVM.
// Check Sun's docs for values above 4GB.
var mem="1G";

// Set to true to show the java console
var showConsole = false;

var sh = new ActiveXObject("WScript.Shell");
var env = sh.Environment("PROCESS");
var fso = WScript.CreateObject("Scripting.FileSystemObject");

var moonlightInstDir=WScript.ScriptFullName.substring(0,WScript.ScriptFullName.length-WScript.ScriptName.length-1);

logFile = fso.createTextFile(moonlightInstDir + "/mlbatch.out",true,false);

logFile.writeLine("Installation Directory: " + moonlightInstDir);

/**
* Reads a registry entry.
*
* @param sh An Instance of WScript.Shell.
* @param key The name of the key including the complete path.
* @return The string representation of the registry value or null if it does not exist.
*/
function readReg(sh, key) {
	var res;
	try {
		res = sh.RegRead(key);
	} catch (e) {
		// Key nonexistant
		res = null;
	}
	
	return res;
}

// Is the server VM present?
var serverVM = true;

// Name of the Java executable, without path
var javaExec = showConsole ? "java" : "javaw";

// Is the path already complete (including the exec)?
var pathComplete = false;

// Path of java directory
var javaPath = null;
// If you want to override automatic detection (old batfile behaviour), uncomment the following line (remove the slashes).
// javaPath = "YOURJAVADIR";

// JAVA_HOME environment variable
if (javaPath == null) {
	var javaHome = env("JAVA_HOME");
	
	if ((javaHome != null) && (javaHome != "")) {
		if (fso.FolderExists(javaHome)) {
			javaPath = javaHome;
		}
	}
}

// Probe for JDK
if (javaPath == null) {
	var javaVers = readReg(sh, "HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\CurrentVersion");
	
	if (javaVers != null) {
		javaPath = readReg(sh, "HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\" + javaVers + "\\JavaHome");
		
		if (javaPath != null) {
			serverVM = true;
		}
	}
}

// JRE
if (javaPath == null) {
	var javaVers = readReg(sh, "HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Runtime Environment\\CurrentVersion");

	if (javaVers != null) {
		javaPath = readReg(sh, "HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Runtime Environment\\" + javaVers + "\\JavaHome");
		
		if (javaPath != null) {
			serverVM = false;
		}
	}
}

// Java interpreter already in path? (JRE does that by copying the files to C:\Windows\System32)
if (javaPath == null) {
	try {
		var tph = sh.exec("cmd /c " + javaExec + " -server -version > \\.\nul 2> \\.\nul");
		
		// Wait for termination
		while (tph.Status == 0) {
			WScript.sleep(50);
		}
		
		javaPath = javaExec;
		pathComplete = true;
		// Likely server VM not found
		if (tph.ExitCode != 0) {
			serverVM = false;
		}
	} catch (e) {
		; // Java not found
	}
}

// Guess
if (javaPath == null) {
	var guessedPath = "\\java";
	
	if (fso.FolderExists(guessedPath)) {
		javaPath = guessedPath;
		
		// Assume server VM
		serverVM = true;
	}
}

if (javaPath == null) {
	WScript.echo("No Java Installation could be found. Please download and install the JDK from http://java.sun.com/javase/downloads/ .");
	WScript.quit(1);
}

// Gather jar files in library directories to assemble class path

function getJars(folderName) {
	var folderObject = fso.getFolder(folderName) 
	
	var result = "";
	for (var enumerator = new Enumerator( folderObject.files ); !enumerator.atEnd(); enumerator.moveNext() ) {
		var filename=enumerator.item().name;
		if(filename.substring(filename.length-4,filename.length)==".jar") {
			if(result == "") {
				result = folderName + filename;
			} else {
				result = result + ";" + folderName + filename;
			}			
		}
	}
	
	return result;
}

var libClassPath = getJars(moonlightInstDir + "/lib/jar/") 
libClassPath = libClassPath + ";" + getJars(moonlightInstDir + "/lib/Win32/i686/") 

logFile.writeLine("Lib CLASSPATH: " + libClassPath);

var options = " -Xdebug -Xmx" + mem + (serverVM ? " -server" : "") + " -Dcom.trolltech.qt.systemlibraries=mingwm10.dll \"-Dcom.trolltech.qt.library-path=" + moonlightInstDir + "\\lib\\Win32\\i686\" \"-Djava.library.path=" + moonlightInstDir + "\\lib\\Win32\\i686\" -cp \"" + libClassPath + " ;mlhdrviewer.jar\" eu.moonlight3d.hdrviewer.HDRBatch \"" + moonlightInstDir + "\"";

var arguments = "";
for (var i = 0;i < WScript.Arguments.Length;i++) {
	var arg = WScript.Arguments.Item(i);
	
	arguments += " \"" + arg + "\"";
}

var cmd = javaPath + (pathComplete ? "" : ("\\bin\\" + javaExec)) + options + arguments;

logFile.writeLine(cmd);

var ph = sh.Exec(cmd);
while(! ph.StdErr.AtEndOfStream) {
	var line = ph.StdErr.ReadLine();
	logFile.writeLine(line);
}

logFile.close();