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package org.hisrc.jsonix.definition;

import java.text.MessageFormat;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang3.Validate;
import org.hisrc.jsonix.configuration.AmbiguousPackageMappingException;
import org.hisrc.jsonix.context.JsonixContext;
import org.jvnet.jaxb2_commons.xml.bind.model.MModelInfo;
import org.slf4j.Logger;

public class Modules {

	private final Logger logger;
	private final Collection> modules;
	private final Map packageMappingNameMap = new HashMap();
	private final MModelInfo modelInfo;

	public Modules(JsonixContext context, MModelInfo modelInfo,
			Collection> modules) {
		Validate.notNull(modelInfo);
		Validate.noNullElements(modules);
		this.logger = Validate.notNull(context).getLoggerFactory()
				.getLogger(Modules.class.getName());
		this.modelInfo = modelInfo;
		this.modules = modules;

		for (Module module : modules) {
			for (Mapping mapping : module.getMappings()) {

				final String packageName = mapping.getPackageName();
				final String mappingName = mapping.getMappingName();
				final String knownMappingName = packageMappingNameMap
						.get(packageName);
				if (knownMappingName == null) {
					this.packageMappingNameMap.put(packageName, mappingName);
				} else if (!knownMappingName.equals(mappingName)) {
					logger.warn(MessageFormat
							.format("Package [{0}] is mapped using at least two different mapping names [{1}] and [{2}]. Packages may be mapped by several mappings but they have to have equal names.",
									packageName, knownMappingName, mappingName));
					throw new AmbiguousPackageMappingException(packageName,
							knownMappingName, mappingName);
				}
			}
		}
	}

	public MModelInfo getModelInfo() {
		return modelInfo;
	}

	public String getMappingName(String packageName) {
		return this.packageMappingNameMap.get(packageName);
	}

	public Collection> getModules() {
		return modules;
	}

	@Override
	public String toString() {
		return this.modules.toString();
	}

}