package net.sourceforge.phpdt.internal.launching;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import net.sourceforge.phpdt.internal.core.JavaProject;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.internal.ui.launchConfigurations.EnvironmentVariable;


public class InterpreterRunnerConfiguration {
	protected ILaunchConfiguration configuration;
	private HashMap fEnvironment;

	public InterpreterRunnerConfiguration(ILaunchConfiguration aConfiguration) {
		configuration = aConfiguration;
		fEnvironment= new HashMap();
	}
	
	public String getAbsoluteFileName() {
		IPath path = new Path(getFileName());
		IProject project = getProject().getProject();

		return project.getLocation().toOSString() + "/" + getFileName();
	}
	
	public String getFileName() {
		String fileName = "";

		try {
			fileName = configuration.getAttribute(PHPLaunchConfigurationAttribute.FILE_NAME, "No file specified in configuration");
		} catch(CoreException e) {}
		
		return fileName.replace('\\', '/');
	} 
	
	public JavaProject getProject() {
		String projectName = "";
		
		try {
			projectName = configuration.getAttribute(PHPLaunchConfigurationAttribute.PROJECT_NAME, "");
		} catch(CoreException e) {
			PHPLaunchingPlugin.log(e);
		}

		IProject project = PHPLaunchingPlugin.getWorkspace().getRoot().getProject(projectName);

		JavaProject phpProject = new JavaProject();
		phpProject.setProject(project);
		return phpProject;
	}
	
	public File getAbsoluteWorkingDirectory() {
		String file = null;
		try {
			file = configuration.getAttribute(PHPLaunchConfigurationAttribute.WORKING_DIRECTORY, "");
		} catch(CoreException e) {
			PHPLaunchingPlugin.log(e);
		}
		return new File(file);
	}
	
	public String getInterpreterArguments() {
		try {
			return configuration.getAttribute(PHPLaunchConfigurationAttribute.INTERPRETER_ARGUMENTS, "");
		} catch(CoreException e) {}
		
		return "";
	}
	
	public String getProgramArguments() {
		try {
			return configuration.getAttribute(PHPLaunchConfigurationAttribute.PROGRAM_ARGUMENTS, "");
		} catch (CoreException e) {}
		
		return "";
	}

	public PHPInterpreter getInterpreter() {
		String selectedInterpreter = null;
		try {
			selectedInterpreter = configuration.getAttribute(PHPLaunchConfigurationAttribute.SELECTED_INTERPRETER, "");
		} catch(CoreException e) {}

		return PHPRuntime.getDefault().getInterpreter(selectedInterpreter);
	}
	
	public boolean useRemoteDebugger() {
		try {
			return configuration.getAttribute(PHPLaunchConfigurationAttribute.REMOTE_DEBUG, false);
		} catch(CoreException e) {
			PHPLaunchingPlugin.log(e);
		}
		return false;
	}
	
	public void setEnvironment(String[] envp)
	{
		if (envp== null)
			return;
		for (int i = 0; i<envp.length; i++ ) {
			addEnvironmentValue(envp[i],true);
		}
	}
	
	public void addEnvironmentValue(String env,boolean replace)
	{
		String value = env.substring(env.indexOf('=')+1);
		String key = env.substring(0,env.indexOf('='));
		addEnvironmentValue(key,value,replace);
	}
	
	public void addEnvironmentValue(String key, String value,boolean replace)
	{
		if (!replace && fEnvironment.containsKey(key)) {
			EnvironmentVariable ev = (EnvironmentVariable) fEnvironment.get(key);
			ev.setValue(ev.getValue()+";"+value);
			fEnvironment.put(key,ev);
		} else
			this.fEnvironment.put(key, new EnvironmentVariable(key, value));
	}
	
	public String[] getEnvironment()
	{

		Iterator iter= fEnvironment.entrySet().iterator();
		List strings= new ArrayList(fEnvironment.size());
		while (iter.hasNext()) {
			Map.Entry entry = (Map.Entry) iter.next();
			StringBuffer buffer= new StringBuffer((String) entry.getKey());
			buffer.append('=').append(((EnvironmentVariable) entry.getValue()).getValue());
			strings.add(buffer.toString());
		}
		return (String[]) strings.toArray(new String[strings.size()]);

	}	
	
	public String getRemoteSourcePath() {
		
		IProject project = getProject().getProject();
		if (useRemoteDebugger())
			return project.getLocation().toOSString();
		else
		{		
			try {
				return configuration.getAttribute(PHPLaunchConfigurationAttribute.REMOTE_PATH, "");
			} catch(CoreException e) {
				PHPLaunchingPlugin.log(e);
			}
		}	

		return "";
	}

}