EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model.media;

import java.net.URI;

import java.util.HashMap;

import java.util.HashSet;

import java.util.Map;

import java.util.Set;

import javax.persistence.Embedded;

import javax.persistence.Entity;

import javax.persistence.FetchType;

import javax.persistence.Inheritance;

import javax.persistence.InheritanceType;

import javax.persistence.JoinTable;

import javax.persistence.ManyToOne;

import javax.persistence.MapKeyJoinColumn;

import javax.persistence.OneToMany;

import javax.persistence.Transient;

import javax.validation.constraints.NotNull;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlElementWrapper;

import javax.xml.bind.annotation.XmlIDREF;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlSchemaType;

import javax.xml.bind.annotation.XmlType;

import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import org.apache.commons.lang.StringUtils;

import org.apache.log4j.Logger;

import org.hibernate.annotations.Cascade;

import org.hibernate.annotations.CascadeType;

import org.hibernate.envers.Audited;

import org.hibernate.search.annotations.IndexedEmbedded;

import org.hibernate.validator.constraints.NotEmpty;

import eu.etaxonomy.cdm.jaxb.MultilanguageTextAdapter;

import eu.etaxonomy.cdm.model.agent.AgentBase;

import eu.etaxonomy.cdm.model.common.IIntextReferenceTarget;

import eu.etaxonomy.cdm.model.common.IMultiLanguageTextHolder;

import eu.etaxonomy.cdm.model.common.IdentifiableEntity;

import eu.etaxonomy.cdm.model.common.IdentifiableSource;

import eu.etaxonomy.cdm.model.common.Language;

import eu.etaxonomy.cdm.model.common.LanguageString;

import eu.etaxonomy.cdm.model.common.MultilanguageText;

import eu.etaxonomy.cdm.model.common.TimePeriod;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.strategy.cache.common.IIdentifiableEntityCacheStrategy;

import eu.etaxonomy.cdm.strategy.cache.media.MediaDefaultCacheStrategy;

import eu.etaxonomy.cdm.validation.Level2;

/**

 * A {@link Media media} is any kind of media that represents a media object.

 * This media object can have multiple {@link MediaRepresentation media representations} that differ in MIME-type

 * and/or quality.

 * E.g.

 * (1) an image can have a tiff and a jpg media representation.

 * (2) an formatted text can have a text/html or an application/pdf representation.

 *

 * @author m.doering

 * @since 08-Nov-2007 13:06:34

 */

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(name = "Media", propOrder = {

    "title",

    "mediaCreated",

    "description",

    "representations",

    "artist",

    "link"

})

@XmlRootElement(name = "Media")

@Entity

//@Indexed disabled to reduce clutter in indexes, since this type is not used by any search

//@Indexed

@Audited

@Inheritance(strategy=InheritanceType.SINGLE_TABLE)

public class Media

        extends IdentifiableEntity<IIdentifiableEntityCacheStrategy>

        implements IMultiLanguageTextHolder, IIntextReferenceTarget {

    private static final long serialVersionUID = -1927421567263473658L;

    @SuppressWarnings("unused")

    private static final Logger logger = Logger.getLogger(Media.class);

    // TODO once hibernate annotations support custom collection type

    // private MultilanguageText title = new MultilanguageText();

    @XmlElement(name = "MediaTitle")

    @XmlJavaTypeAdapter(MultilanguageTextAdapter.class)

    @OneToMany(fetch = FetchType.LAZY, orphanRemoval=true)

    @MapKeyJoinColumn(name="title_mapkey_id")

    @IndexedEmbedded

    @Cascade({CascadeType.SAVE_UPDATE, CascadeType.MERGE,CascadeType.DELETE, CascadeType.REFRESH})

    @NotNull

    @NotEmpty(groups = Level2.class)

    private Map<Language,LanguageString> title = new HashMap<>();

    //creation date of the media (not of the record)

    @XmlElement(name ="MediaCreated" )

    @Embedded

    @IndexedEmbedded

    private TimePeriod mediaCreated;

    // TODO once hibernate annotations support custom collection type

    // private MultilanguageText description = new MultilanguageText();

    @XmlElement(name = "MediaDescription")

    @XmlJavaTypeAdapter(MultilanguageTextAdapter.class)

    @OneToMany(fetch = FetchType.LAZY, orphanRemoval=true)

    @MapKeyJoinColumn(name="description_mapkey_id")

    @JoinTable(name = "Media_Description")

    @Cascade({CascadeType.SAVE_UPDATE, CascadeType.MERGE,CascadeType.DELETE, CascadeType.REFRESH})

    @IndexedEmbedded

    @NotNull

    private Map<Language,LanguageString> description = new HashMap<>();

    //A single medium such as a picture can have multiple representations in files.

    //Common are multiple resolutions or file formats for images for example

    @XmlElementWrapper(name = "MediaRepresentations")

    @XmlElement(name = "MediaRepresentation")

    @OneToMany(mappedBy="media",fetch = FetchType.LAZY, orphanRemoval=true)

    @Cascade({CascadeType.SAVE_UPDATE, CascadeType.MERGE, CascadeType.DELETE, CascadeType.REFRESH})

    @NotNull

    @NotEmpty(groups = Level2.class)

    private Set<MediaRepresentation> representations = new HashSet<>();

    @XmlElement(name = "Artist")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch = FetchType.LAZY)

    @IndexedEmbedded

    @Cascade({CascadeType.SAVE_UPDATE,CascadeType.MERGE})

    private AgentBase<?> artist;

    @XmlElement(name = "Link")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch = FetchType.LAZY)

    @IndexedEmbedded

    @Cascade({CascadeType.SAVE_UPDATE,CascadeType.MERGE, CascadeType.DELETE})

    private ExternalLink link;

//************************* FACTORY METHODS *******************************/

    public static Media NewInstance(){

        return new Media();

    }

    /**

     * Factory method which creates a new media, adds a reprsentation including mime type and suffix information

     * and adds to the later a representation part for a given uri and size

     * Returns <code>null</code> if uri is empty

     * @return Media

     */

    public static Media NewInstance(URI uri, Integer size, String mimeType, String suffix){

    	//TODO improve type recognition

    	Class<? extends MediaRepresentationPart> clazz = null;

    	if (StringUtils.isNotBlank(mimeType)){

    		if (mimeType.matches("image.*")){

    			clazz = ImageFile.class;

    		}

    	}

    	if (StringUtils.isNotBlank(suffix)){

    		if (suffix.matches("\\.(gif|jpe?g|tiff?)")){

    			clazz = ImageFile.class;

    		}

    	}else if (uri != null){

    		if (uri.toString().matches("\\.(gif|jpe?g|tiff?)")){

    			clazz = ImageFile.class;

    		}

    	}

    	MediaRepresentation representation = MediaRepresentation.NewInstance(mimeType, suffix, uri, size,clazz);

        if (representation == null){

            return null;

        }

        Media media = new Media();

        media.addRepresentation(representation);

        return media;

    }

//********************************* CONSTRUCTOR **************************/

    /**

     * Constructor

     */

    protected Media() {

        super();

        setMediaCacheStrategy();

    }

    private void setMediaCacheStrategy() {

//      if (getClass() == Media.class){

    	this.cacheStrategy = MediaDefaultCacheStrategy.NewInstance();

//      }

    }

// ********************* GETTER / SETTER    **************************/

    public Set<MediaRepresentation> getRepresentations(){

        if(representations == null) {

            this.representations = new HashSet<>();

        }

        return this.representations;

    }

    @SuppressWarnings("deprecation")

    public void addRepresentation(MediaRepresentation representation){

        if (representation != null){

            this.getRepresentations().add(representation);

            representation.setMedia(this);

        }

    }

    @SuppressWarnings("deprecation")

    public void removeRepresentation(MediaRepresentation representation){

        this.getRepresentations().remove(representation);

        if (representation != null){

            representation.setMedia(null);

        }

    }

    public AgentBase getArtist(){

        return this.artist;

    }

    public void setArtist(AgentBase artist){

        this.artist = artist;

    }

    public ExternalLink getLink() {

        return link;

    }

    public void setLink(ExternalLink link) {

        this.link = link;

    }

//************************ title / title cache *********************************

    public LanguageString getTitle(){

        return getTitle(Language.DEFAULT());

    }

    public LanguageString getTitle(Language language){

        return title.get(language);

    }

    @Transient

    public Map<Language,LanguageString> getAllTitles(){

        if(title == null) {

            this.title = new HashMap<>();

        }

        return this.title;

    }

    /**

     * Adds the languageString to the {@link MultilanguageText multilanguage text}

     * used to be the title of <i>this</i> media.

     *

     * @param title		the languageString with the title in a particular language

     * @see    	   		#getTitle()

     * @see    	   		#putTitle(Language String)

    */

    public void putTitle(LanguageString title){

        this.title.put(title.getLanguage(), title);

    }

    /**

     * Creates a {@link LanguageString language string} based on the given text string

     * and the given {@link Language language} and adds it to the {@link MultilanguageText multilanguage text}

     * used to be the title of <i>this</i> media.

     *

     * @param language	the language in which the title string is formulated

     * @param text		the title in a particular language

     *

     * @see    	   		#getTitle()

     * @see    	   		#putTitle(LanguageString)

     */

    public void putTitle(Language language, String title){

        this.title.put(language, LanguageString.NewInstance(title, language));

    }

    public void removeTitle(Language language){

        this.title.remove(language);

    }

    @Transient

    public String getTitleCacheByLanguage(Language lang){

        if (cacheStrategy != null){

            return ((MediaDefaultCacheStrategy)cacheStrategy).getTitleCacheByLanguage(this, lang);

        }else{

            return null;

        }

    }

    /**

     * Puts the title into the title field which is a multi-language string

     * with default language as language

     */

    @Override

    public void setTitleCache(String titleCache) {

        putTitle(LanguageString.NewInstance(titleCache, Language.DEFAULT()));

    }

    @Override

    public String getTitleCache(){

        if (protectedTitleCache){

            return this.titleCache;

        }

        // is title dirty, i.e. equal NULL?

        if (titleCache == null){

            this.titleCache = generateTitle();

            this.titleCache = getTruncatedCache(this.titleCache) ;

        }else{

            //do the same as listeners on dependend objects like representations parts

            //are not yet installed

            this.titleCache = generateTitle();

            this.titleCache = getTruncatedCache(this.titleCache) ;

        }

        return titleCache;

    }

    public TimePeriod getMediaCreated(){

        return this.mediaCreated;

    }

    public void setMediaCreated(TimePeriod mediaCreated){

        this.mediaCreated = mediaCreated;

    }

    //************* Descriptions  *********************/

    public Map<Language,LanguageString> getAllDescriptions(){

        if(this.description == null) {

            this.description = new HashMap<>();

        }

        return this.description;

    }

    public LanguageString getDescription(Language language){

        return getAllDescriptions().get(language);

    }

    public void addDescription(LanguageString description){

        this.description.put(description.getLanguage(), description);

    }

    public void putDescription(Language language, String text){

        this.description.put(language, LanguageString.NewInstance(text, language));

    }

    public void removeDescription(Language language){

        this.description.remove(language);

    }

// ************************ SOURCE ***************************/

    public IdentifiableSource addPrimaryMediaSource(Reference citation, String microCitation) {

        if (citation == null && microCitation == null){

            return null;

        }

        IdentifiableSource source = IdentifiableSource.NewPrimaryMediaSourceInstance(citation, microCitation);

        addSource(source);

        return source;

    }

//************************* CLONE **************************/

    @Override

    public Object clone() throws CloneNotSupportedException{

        Media result = (Media)super.clone();

        //description

        result.description = cloneLanguageString(this.description);

        //title

        result.title = cloneLanguageString(this.title);

        //media representations

        result.representations = new HashSet<>();

        for (MediaRepresentation mediaRepresentation: this.representations){

            result.representations.add((MediaRepresentation)mediaRepresentation.clone());

        }

        result.link = this.link != null ? this.link.clone(): null;

        //no changes to: artist

        return result;

    }

    public int compareTo(Object o) {

        return 0;

    }

}