/**
 * Copyright 2010 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.verifier.report.html;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.drools.verifier.data.VerifierData;
import org.drools.verifier.report.components.Cause;
import org.drools.verifier.report.components.VerifierMessage;
import org.drools.verifier.report.components.VerifierMessageBase;
import org.drools.verifier.report.components.VerifierRangeCheckMessage;
import org.mvel2.templates.TemplateRuntime;

/**
 * 
 * @author Toni Rikkola
 */
class VerifierMessagesVisitor extends ReportVisitor {

	private static final String VERIFIER_MESSAGES_TEMPLATE = "verifierMessages.htm";
	private static final String VERIFIER_MESSAGE_TEMPLATE = "verifierMessage.htm";

	public static final String NOTES = "Notes";
	public static final String WARNINGS = "Warnings";
	public static final String ERRORS = "Errors";

	public static String visitVerifierMessagesCollection(String title,
			Collection<VerifierMessageBase> messages, VerifierData data) {
		Map<String, Object> map = new HashMap<String, Object>();
		Collection<String> messageTemplates = new ArrayList<String>();
		String myTemplate = readFile(VERIFIER_MESSAGES_TEMPLATE);

		for (VerifierMessageBase message : messages) {
			messageTemplates.add(visitVerifierMessage(message, data));
		}

		map.put("title", title);
		map.put("messages", messageTemplates);

		return String.valueOf(TemplateRuntime.eval(myTemplate, map));
	}

	public static String visitVerifierMessage(VerifierMessageBase message,
			VerifierData data) {
		if (message instanceof VerifierRangeCheckMessage) {
			return visitVerifierMessage((VerifierRangeCheckMessage) message,
					data);
		} else if (message instanceof VerifierMessage) {
			return visitVerifierMessage((VerifierMessage) message);
		}

		return null;
	}

	public static String visitVerifierMessage(
			VerifierRangeCheckMessage message, VerifierData data) {

		return MissingRangesReportVisitor.visitRangeCheckMessage(
				UrlFactory.THIS_FOLDER, message, data);
	}

	public static String visitVerifierMessage(VerifierMessage message) {

		Map<String, Object> map = new HashMap<String, Object>();
		Collection<String> causeUrls = new ArrayList<String>();
		String myTemplate = readFile(VERIFIER_MESSAGE_TEMPLATE);

		// Solve the url's to causes if there is any.
		for (Cause cause : message.getCauses()) {
			causeUrls.add(UrlFactory.getUrl(cause));
		}
		
		map.put("title", message.getSeverity());
		map.put("reason", message.getFaulty());
		map.put("message", message.getMessage());
		map.put("causes", causeUrls);

		return String.valueOf(TemplateRuntime.eval(myTemplate, map));
	}
}