import com.sun.javadoc.*;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.Iterator;

public class commentParser {
	static HashMap<String, String> parsedComments = new HashMap<String, String>();

	public static boolean start(RootDoc root) {

		/*
		 * This method is called by 'javadoc' and gets the whole parsed java
		 * file, we get comments and store them
		 */

		ClassDoc[] classes = root.classes();

		for (int i = 0; i < classes.length; i++) {

			if (classes[i].getRawCommentText().length() > 0)
				parsedComments.put(classes[i].name(),
						classes[i].getRawCommentText());

			MethodDoc[] methods = classes[i].methods();
			FieldDoc[] fields = classes[i].fields();
			FieldDoc[] constants = classes[i].enumConstants();

			for (int j = 0; j < constants.length; j++) {
				FieldDoc f = constants[j];
				if (f.getRawCommentText().length() > 0)
					parsedComments.put(f.name(), f.getRawCommentText());
			}
			for (int j = 0; j < fields.length; j++) {
				FieldDoc f = fields[j];
				if (f.getRawCommentText().length() > 0)
					parsedComments.put(f.name(), f.getRawCommentText());
			}
			for (int j = 0; j < methods.length; j++) {
				MethodDoc m = methods[j];
				if (m.getRawCommentText().length() > 0)
					parsedComments.put(m.name(), m.getRawCommentText());
			}
		}
		return true;
	}

	public static int check(HashMap<String, String> wantedComments) {
		int errorCount=0;
		Iterator< Entry<String, String> > it = parsedComments.entrySet().iterator();

		while (it.hasNext())
		{
			Entry<String, String> e = (Entry<String, String>) it.next();

			if (!e.getValue().equals(wantedComments.get(e.getKey()))) {
				System.out.println("Documentation comments for " + e.getKey() + " does not match: ");
				System.out.println("\texpected:"+wantedComments.get(e.getKey()));
				System.out.println("\tgot:\t"+e.getValue());
				errorCount++;
			}
		}

		if (parsedComments.size() < wantedComments.size()) {
			System.out.println("Found " + (wantedComments.size()-parsedComments.size()) + " missed comment(s)!");
			errorCount++;
		}
		
		return errorCount;
	}
}