/**
 * Copyright 2005-2013 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.rice.krms.api.repository.term;

import org.apache.commons.lang.StringUtils;
import org.kuali.rice.core.api.CoreConstants;
import org.kuali.rice.core.api.mo.AbstractDataTransferObject;
import org.kuali.rice.core.api.mo.ModelBuilder;
import org.kuali.rice.core.api.util.jaxb.MapStringStringAdapter;
import org.kuali.rice.krms.api.KrmsConstants;
import org.kuali.rice.krms.api.repository.BuilderUtils;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAnyElement;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Set;

/**
 * This is a description of what this class does - gilesp don't forget to fill this in. 
 * 
 * @author Kuali Rice Team (rice.collab@kuali.org)
 *
 */
@XmlRootElement(name = TermResolverDefinition.Constants.ROOT_ELEMENT_NAME)
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = TermResolverDefinition.Constants.TYPE_NAME, propOrder = {
		TermResolverDefinition.Elements.ID,
		TermResolverDefinition.Elements.NAME,
        TermResolverDefinition.Elements.NAMESPACE,
		TermResolverDefinition.Elements.TYPE_ID,
        TermResolverDefinition.Elements.ACTIVE,
		TermResolverDefinition.Elements.OUTPUT,
		TermResolverDefinition.Elements.PREREQUISITES,
		TermResolverDefinition.Elements.ATTRIBUTES,
		TermResolverDefinition.Elements.PARAMETER_NAMES,
        CoreConstants.CommonElements.VERSION_NUMBER,
		CoreConstants.CommonElements.FUTURE_ELEMENTS
})
public final class TermResolverDefinition extends AbstractDataTransferObject implements TermResolverDefinitionContract {
	
    private static final long serialVersionUID = 1L;
	
	@XmlElement(name = Elements.ID, required=false)
	private final String id;
	@XmlElement(name = Elements.NAMESPACE, required=true)
	private final String namespace;
	@XmlElement(name = Elements.NAME, required=true)
	private final String name;
    @XmlElement(name = Elements.TYPE_ID, required=true)
    private final String typeId;
	@XmlElement(name = Elements.OUTPUT, required=false)
	private final TermSpecificationDefinition output;
    @XmlElement(name = Elements.ACTIVE, required = false)
    private final boolean active;

	@XmlElement(name = "termSpecificationDefinition", required=false)
	@XmlElementWrapper(name = Elements.PREREQUISITES, required=false)
	private final Set<TermSpecificationDefinition> prerequisites;

	@XmlElement(name = Elements.ATTRIBUTES, required = false)
	@XmlJavaTypeAdapter(value = MapStringStringAdapter.class)
	private final Map<String, String> attributes;

	@XmlElementWrapper(name = Elements.PARAMETER_NAMES, required=false)
	@XmlElement(name = "parameterName")
	private final Set<String> parameterNames;

	@XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)
    private final Long versionNumber;	
	
    @SuppressWarnings("unused")
	@XmlAnyElement
	private final Collection<org.w3c.dom.Element> _futureElements = null;
    
	/**
	 * This private constructor is for JAXB use only, don't invoke directly.
	 */
	private TermResolverDefinition() {
		id = null;
		namespace = null;
		name = null;
		typeId = null;
        active = true;
		output = null;
		prerequisites = null;
		attributes = null;
		parameterNames = null;
        versionNumber = null;
	}
	
	private TermResolverDefinition(Builder builder) {
		this.id = builder.getId();
		this.namespace = builder.getNamespace();
		this.name = builder.getName();
		this.typeId = builder.getTypeId();
        this.active = builder.isActive();
		this.output = builder.getOutput().build();
		this.prerequisites = BuilderUtils.convertFromBuilderSet(builder.getPrerequisites());
		this.parameterNames = Collections.unmodifiableSet(builder.getParameterNames());
		this.versionNumber = builder.getVersionNumber();
        if (builder.attributes != null){
        	this.attributes = Collections.unmodifiableMap(builder.getAttributes());
        } else {
        	this.attributes = null;
        }
	}
	
	public static class Builder implements TermResolverDefinitionContract, ModelBuilder, 
		Serializable {
		
		private static final long serialVersionUID = 1L;
		
		private String id;
		private String namespace;
		private String name;
        private String typeId;
        private boolean active;
		private TermSpecificationDefinition.Builder output;
		private Set<TermSpecificationDefinition.Builder> prerequisites;
        private Map<String, String> attributes;
		private Set<String> parameterNames;
        private Long versionNumber;
		
		private Builder(String id, String namespaceCode, String name, String typeId, TermSpecificationDefinition.Builder output,
                Set<TermSpecificationDefinition.Builder> prerequisites, Map<String, String> attributes, Set<String> parameterNames) {
			setId(id);
			setNamespace(namespaceCode);
			setName(name);
			setTypeId(typeId);
            setActive(true);
			setOutput(output);
			setPrerequisites(prerequisites);
			setAttributes(attributes);
			setParameterNames(parameterNames);
		}
		
		
		
		private Builder(TermResolverDefinitionContract termResolver) {
			setId(termResolver.getId());
			setNamespace(termResolver.getNamespace());
			setName(termResolver.getName());
			setTypeId(termResolver.getTypeId());
            setActive(termResolver.isActive());
			setOutput(TermSpecificationDefinition.Builder.create(termResolver.getOutput()));
			setPrerequisites(BuilderUtils.transform(termResolver.getPrerequisites(), TermSpecificationDefinition.Builder.toBuilder));
			setAttributes(termResolver.getAttributes());
			this.setParameterNames(termResolver.getParameterNames());
			this.setVersionNumber(termResolver.getVersionNumber());
		}
		
		public static Builder create(TermResolverDefinitionContract termResolver) {
			return new Builder(termResolver);
		}
		
		public static Builder create(String id, String namespaceCode, String name, String typeId,
                TermSpecificationDefinition.Builder output, Set<TermSpecificationDefinition.Builder> prerequisites, Map<String, String> attributes,
                Set<String> parameterNames) {
			return new Builder(id, namespaceCode, name, typeId, output, prerequisites, attributes, parameterNames);
		}

		// Builder setters:
		// TODO: proper validation & javadocs
		
		/**
		 * @param id the id to set
		 */
		public void setId(String id) {
			if (id != null && StringUtils.isBlank(id)) {
				throw new IllegalArgumentException(/* TODO */);
			}
			this.id = id;
		}

		/**
		 * @param namespace the namespace to set
		 */
		public void setNamespace(String namespace) {
			if (StringUtils.isBlank(namespace)) {
				throw new IllegalArgumentException(/* TODO */);
			}
			this.namespace = namespace;
		}

		/**
		 * @param name the name to set
		 */
		public void setName(String name) {
			if (StringUtils.isBlank(name)) {
				throw new IllegalArgumentException(/* TODO */);
			}
			this.name = name;
		}

		/**
		 * @param typeId the typeId to set
		 */
		public void setTypeId(String typeId) {
			if (StringUtils.isBlank(typeId)) {
				throw new IllegalArgumentException(/* TODO */);
			}
			this.typeId = typeId;
		}

        /**
         * @param active the active indicator
         */
        public void setActive(boolean active) {
            this.active = active;
        }

		/**
		 * @param output the output to set
		 */
		public void setOutput(TermSpecificationDefinition.Builder output) {
			if (output == null) {
				throw new IllegalArgumentException(/* TODO */);
			}
			this.output = output;
		}

		/**
		 * @param prerequisites the prerequisites to set
		 */
		public void setPrerequisites(
				Set<TermSpecificationDefinition.Builder> prerequisites) {
			this.prerequisites = prerequisites;
		}

		/**
		 * @param attributes the attributes to set
		 */
		public void setAttributes(Map<String, String> attributes){
			if (attributes == null){
				this.attributes = Collections.emptyMap();
			} else {
				this.attributes = Collections.unmodifiableMap(attributes);
			}
		}

		/**
		 * @param parameterNames the parameterNames to set
		 */
		public void setParameterNames(Set<String> parameterNames) {
			this.parameterNames = parameterNames;
		}		
		
		/**
		 * @param versionNumber the versionNumber to set.  May be null.
		 */
        public void setVersionNumber(Long versionNumber){
            this.versionNumber = versionNumber;
        }
        
		// Builder getters:

		/**
		 * @return the id
		 */
		public String getId() {
			return this.id;
		}
		
		/**
		 * @return the namespace
		 */
		public String getNamespace() {
			return this.namespace;
		}
		/**
		 * @return the name
		 */
		public String getName() {
			return this.name;
		}
		/**
		 * @return the typeId
		 */
		public String getTypeId() {
			return this.typeId;
		}
        /**
         * @return the active indicator
         */
        public boolean isActive() {
            return this.active;
        }
		/**
		 * @return the output
		 */
		public TermSpecificationDefinition.Builder getOutput() {
			return this.output;
		}
		/**
		 * @return the prerequisites
		 */
		public Set<TermSpecificationDefinition.Builder> getPrerequisites() {
			return this.prerequisites;
		}
		/**
		 * @return the attributes
		 */
		public Map<String, String> getAttributes() {
			return this.attributes;
		}
		/**
		 * @return the parameterNames
		 */
		public Set<String> getParameterNames() {
			return (parameterNames == null) ? Collections.<String>emptySet() : parameterNames;
		}
		
		/**
		 * @return the version number
		 */
        @Override
        public Long getVersionNumber() {
            return this.versionNumber;
        }

		/**
		 * This overridden method ...
		 * 
		 * @see org.kuali.rice.core.api.mo.ModelBuilder#build()
		 */
		@Override
		public TermResolverDefinition build() {
			return new TermResolverDefinition(this);
		}
		
	}
	
	/**
	 * @return the id
	 */
	@Override
	public String getId() {
		return this.id;
	}
	
	/**
	 * @return the namespace
	 */
	@Override
	public String getNamespace() {
		return this.namespace;
	}
	
	/**
	 * @return the name
	 */
	@Override
	public String getName() {
		return this.name;
	}
	
	/**
	 * @return the typeId
	 */
	@Override
	public String getTypeId() {
		return this.typeId;
	}

    /**
     * @return the active indicator
     */
    @Override
    public boolean isActive() {
        return active;
    }

	/**
	 * @return the specification
	 */
	@Override
	public TermSpecificationDefinition getOutput() {
		return this.output;
	}
	
	/**
	 * @return the prerequisites
	 */
	@Override
	public Set<TermSpecificationDefinition> getPrerequisites() {
		return this.prerequisites;
	}
	/**
	 * @return the attributes
	 */
	@Override
	public Map<String, String> getAttributes() {
		return this.attributes;
	}

	/**
	 * @return the parameterNames
	 */
	@Override
	public Set<String> getParameterNames() {
		return this.parameterNames;
	}
	
	/**
	 * @see org.kuali.rice.core.api.mo.common.Versioned#getVersionNumber()
	 */
    @Override
    public Long getVersionNumber() {
        return versionNumber;
    }
	
	/**
	 * Defines some internal constants used on this class.
	 */
	static class Constants {
		final static String ROOT_ELEMENT_NAME = "termResolverDefinition";
		final static String TYPE_NAME = "termResolverDefinitionType";
	}
	
	static class Elements {
		public static final String ID = "id";
		public static final String NAMESPACE = "namespace";
		public static final String NAME = "name";
        public static final String TYPE_ID = "typeId";
		public static final String OUTPUT = "output";
		public static final String PREREQUISITES = "prerequisites";
		public static final String ATTRIBUTES = "attributes";
		public static final String PARAMETER_NAMES = "parameterNames";
        public static final String ACTIVE = "active";
	}

    public static class Cache {
        public static final String NAME = KrmsConstants.Namespaces.KRMS_NAMESPACE_2_0 + "/" + TermResolverDefinition.Constants.TYPE_NAME;
    }
}