package org.owasp.webgoat.session;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

public class RandomLessonTracker extends LessonTracker {

	private String[] stages;
	
	private String stage;
	
	private Map<String, Boolean> completed = new HashMap<String, Boolean>();
	
	public RandomLessonTracker(String[] stages) {
		if (stages == null)
			stages = new String[0];
		this.stages = stages;
	}
	
	public void setStage(String stage) {
		this.stage = stage;
	}
	
	public String getStage() {
		if (this.stage == null && stages.length > 0)
			return stages[0];
		return this.stage;
	}
	
	public void setStageComplete(String stage, boolean complete) {
		completed.put(stage, Boolean.valueOf(complete));
		for (int i=0; i<stages.length-1; i++)
			if (stages[i].equals(stage))
				setStage(stages[i+1]);
	}
	
	public boolean hasCompleted(String stage) {
		Boolean complete = completed.get(stage);
		return complete == null ? false : complete.booleanValue();
	}
	
	@Override
	public boolean getCompleted() {
		for (int i=0; i<stages.length; i++)
			if (!hasCompleted(stages[i]))
				return false;
		return true;
	}
	
	@Override
	public void setCompleted(boolean complete) {
		if (complete == true)
			throw new UnsupportedOperationException("Use individual stage completion instead");
		for (int i=0;i<stages.length; i++)
			setStageComplete(stages[i], false);
		setStage(stages[0]);
	}
	
    protected void setProperties(Properties props, Screen screen) {
	    super.setProperties(props, screen);
	    for (int i=0; i<stages.length; i++) {
	    	String p = props.getProperty(screen.getTitle() + "." + stages[i] + ".completed");
	    	if (p != null) {
	    		setStageComplete(stages[i], Boolean.valueOf(p));
	    	}
	    }
	    setStage(props.getProperty(screen.getTitle() + ".stage"));
    }
    
    public void store(WebSession s, Screen screen, String user) {
    	for (int i=0; i<stages.length; i++) {
    		if (hasCompleted(stages[i]))
    			lessonProperties.setProperty(screen.getTitle() + "." + stages[i] + ".completed", Boolean.TRUE.toString());
    	}
		lessonProperties.setProperty(screen.getTitle() + ".stage", getStage());
		super.store(s, screen, user);
    }
    
    public String toString() {
    	StringBuffer buff = new StringBuffer();
    	buff.append(super.toString());
    	for (int i=0; i<stages.length; i++) {
    		buff.append("    - completed " + stages[i] + " :....... " + hasCompleted(stages[i]) + "\n");
    	}
    	buff.append("    - currentStage:....... " + getStage() + "\n");
    	return buff.toString();
    }

}