/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.cauldron.bld.ivy;

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

import org.cauldron.bld.core.BldCore;
import org.cauldron.sigil.model.IModelElement;
import org.cauldron.sigil.model.eclipse.ISigilBundle;
import org.cauldron.sigil.repository.IResolution;
import org.cauldron.sigil.repository.IResolutionMonitor;
import org.cauldron.sigil.repository.ResolutionConfig;
import org.cauldron.sigil.repository.ResolutionException;

public class BldResolver implements IBldResolver {
	private Map<String, Properties> repos;
	private BldRepositoryManager manager;
	
	static {
		try {
			BldCore.init();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	};
	
	public BldResolver(Map<String,Properties> repos) {
		this.repos = repos;
	}

	public IResolution resolve(IModelElement element, boolean transitive) {
		int options = ResolutionConfig.IGNORE_ERRORS | ResolutionConfig.INCLUDE_OPTIONAL;
		if (transitive) options |= ResolutionConfig.INCLUDE_DEPENDENTS;
		
		ResolutionConfig config = new ResolutionConfig(options);
		try {
			return resolve(element, config);
		} catch (ResolutionException e) {
			throw new IllegalStateException("eek! this shouldn't happen when ignoreErrors=true", e);
		}
	}
		
	public IResolution resolveOrFail(IModelElement element, boolean transitive) throws ResolutionException {
		int options = 0;
		if ( transitive ) options |= ResolutionConfig.INCLUDE_DEPENDENTS;
		ResolutionConfig config = new ResolutionConfig(options);
		return resolve(element, config);
	}
	
	private IResolution resolve(IModelElement element, ResolutionConfig config) throws ResolutionException {
		if (manager == null) {
			manager = new BldRepositoryManager(repos);
		}

		IResolutionMonitor nullMonitor = new IResolutionMonitor() {
			public void endResolution(IModelElement requirement, ISigilBundle sigilBundle) {
			}

			public boolean isCanceled() {
				return false;
			}

			public void startResolution(IModelElement requirement) {
			}
		};

		return manager.getBundleResolver().resolve(element, config, nullMonitor);
	}
}