/**********************************************************************
 Copyright (c) 2000, 2002 IBM Corp. and others.
 All rights reserved. This program and the accompanying materials
 are made available under the terms of the Common Public License v1.0
 which accompanies this distribution, and is available at
 http://www.eclipse.org/legal/cpl-v10.html
 
 Contributors:
 IBM Corporation - Initial implementation
 Vicente Fernando - www.alfersoft.com.ar
 **********************************************************************/
package net.sourceforge.phpeclipse.xdebug.php.launching;

import java.io.File;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.phpeclipse.xdebug.core.IXDebugPreferenceConstants;
import net.sourceforge.phpeclipse.xdebug.core.XDebugCorePlugin;
import net.sourceforge.phpeclipse.xdebug.php.model.XDebugTarget;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchManager;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.ILaunchConfigurationDelegate;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.core.model.LaunchConfigurationDelegate;


public class PHPLaunchConfigurationDelegate extends LaunchConfigurationDelegate {
	
	/**
	 * @see ILaunchConfigurationDelegate#launch(ILaunchConfiguration, String, ILaunch, IProgressMonitor)
	 */
	public void launch(ILaunchConfiguration configuration, String mode, ILaunch launch, IProgressMonitor monitor) throws CoreException {
		List commandList = new ArrayList();
		
		String phpInterpreter = configuration.getAttribute(IXDebugConstants.ATTR_PHP_INTERPRETER, (String)null);
		boolean useDefaultInterpreter= configuration.getAttribute(IXDebugConstants.ATTR_PHP_DEFAULT_INTERPRETER, true);

		if (useDefaultInterpreter)		
			phpInterpreter=XDebugCorePlugin.getDefault().getPreferenceStore().getString(IXDebugPreferenceConstants.PHP_INTERPRETER_PREFERENCE);

		File exe = new File(phpInterpreter);
		if (!exe.exists()) {
			abort(MessageFormat.format("Specified PHP executable {0} does not exist. Check value of PHP-Interpreter.", new String[]{phpInterpreter}), null);
		}
		commandList.add(phpInterpreter);
		
		// program name
		String projectName = configuration.getAttribute(IXDebugConstants.ATTR_PHP_PROJECT, (String)null);
		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName);

		if (project == null) {
			abort("PHP-Script unspecified.", null);
		}
		String fileName = configuration.getAttribute(IXDebugConstants.ATTR_PHP_FILE, (String)null);

//		String program = project.getFile(fileName);
		IFile file = project.getFile(fileName);
//		IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(program));
		if (!file.exists()) {
			abort(MessageFormat.format("PHP-Script {0} does not exist.", new String[] {file.getFullPath().toString()}), null);
		}
		
		commandList.add(file.getLocation().toOSString());
//		Map nativeEnvVars = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironment();
		// Environment variables
		String[] envp=DebugPlugin.getDefault().getLaunchManager().getEnvironment(configuration);
		//		Map envVars=configuration.getAttribute(ILaunchManager.ATTR_ENVIRONMENT_VARIABLES, nativeEnvVars);
		int debugPort=XDebugCorePlugin.getDefault().getPreferenceStore().getInt(IXDebugPreferenceConstants.DEBUGPORT_PREFERENCE);
		if (debugPort<1024)
			debugPort=IXDebugPreferenceConstants.DEFAULT_DEBUGPORT;
//		if (mode.equals(ILaunchManager.DEBUG_MODE)) {
//			nativeEnvVars.put("XDEBUG_CONFIG", "idekey=xdebug_test remote_enable=1");
//		}
		if (mode.equals(ILaunchManager.DEBUG_MODE)) {
			String[] env;
			if (envp!=null) {
				env = new String[envp.length+1];
				for(int i=0;i<envp.length;i++)
					env[i+1]=envp[i];
			} else
				env = new String[1];
			env[0]="XDEBUG_CONFIG=idekey=xdebug_test remote_enable=1";
			envp=env;
		}
		
		
		String[] commandLine = (String[]) commandList.toArray(new String[commandList.size()]);
		Process process = DebugPlugin.exec(commandLine, null,envp);
		IProcess p = DebugPlugin.newProcess(launch, process, phpInterpreter);
		if (mode.equals(ILaunchManager.DEBUG_MODE)) {
			IDebugTarget target = new XDebugTarget(launch, p, debugPort);
			launch.addDebugTarget(target);
		}
	}
	
	/**
	 * Throws an exception with a new status containing the given
	 * message and optional exception.
	 * 
	 * @param message error message
	 * @param e underlying exception
	 * @throws CoreException
	 */
	private void abort(String message, Throwable e) throws CoreException {
		// TODO: the plug-in code should be the example plug-in, not Perl debug model id
		throw new CoreException(new Status(IStatus.ERROR, IXDebugConstants.ID_PHP_DEBUG_MODEL, 0, message, e));
	}

}