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package com.enonic.xp.project;

import java.util.List;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;

import com.enonic.xp.annotation.PublicApi;
import com.enonic.xp.attachment.Attachment;
import com.enonic.xp.content.ContentConstants;
import com.enonic.xp.content.ContentPropertyNames;
import com.enonic.xp.data.PropertySet;
import com.enonic.xp.data.PropertyTree;
import com.enonic.xp.repository.Repository;
import com.enonic.xp.site.SiteConfig;
import com.enonic.xp.site.SiteConfigs;

@PublicApi
public final class Project
{
    private final ProjectName name;

    private final String displayName;

    private final String description;

    private final List parents;

    private final Attachment icon;

    private final SiteConfigs siteConfigs;

    private Project( Builder builder )
    {
        this.name = builder.name;
        this.displayName = builder.displayName;
        this.description = builder.description;
        this.parents = builder.parents.build();
        this.icon = builder.icon;
        this.siteConfigs = builder.siteConfigs.build();
    }

    public static Builder create()
    {
        return new Builder();
    }

    @Deprecated
    public static Project from( final Repository repository )
    {
        if ( repository == null )
        {
            return null;
        }

        final PropertyTree repositoryData = repository.getData();

        //TODO: remove default project data for XP8
        if ( repositoryData == null )
        {
            return ContentConstants.CONTENT_REPO_ID.equals( repository.getId() ) ? ProjectConstants.DEFAULT_PROJECT : null;
        }

        final PropertySet projectData = repositoryData.getSet( ProjectConstants.PROJECT_DATA_SET_NAME );

        if ( projectData == null )
        {
            return ContentConstants.CONTENT_REPO_ID.equals( repository.getId() ) ? ProjectConstants.DEFAULT_PROJECT : null;
        }

        final Project.Builder project = Project.create()
            .name( ProjectName.from( repository.getId() ) )
            .description( projectData.getString( ProjectConstants.PROJECT_DESCRIPTION_PROPERTY ) )
            .displayName( projectData.getString( ProjectConstants.PROJECT_DISPLAY_NAME_PROPERTY ) );

        buildParents( project, projectData );
        buildIcon( project, projectData );

        return project.build();
    }

    private static void buildIcon( final Project.Builder project, final PropertySet projectData )
    {
        final PropertySet iconData = projectData.getPropertySet( ProjectConstants.PROJECT_ICON_PROPERTY );

        if ( iconData != null )
        {
            project.icon( Attachment.create()
                              .name( iconData.getString( ContentPropertyNames.ATTACHMENT_NAME ) )
                              .label( iconData.getString( ContentPropertyNames.ATTACHMENT_LABEL ) )
                              .mimeType( iconData.getString( ContentPropertyNames.ATTACHMENT_MIMETYPE ) )
                              .size( iconData.getLong( ContentPropertyNames.ATTACHMENT_SIZE ) )
                              .textContent( iconData.getString( ContentPropertyNames.ATTACHMENT_TEXT ) )
                              .build() );
        }
    }

    private static void buildParents( final Project.Builder project, final PropertySet projectData )
    {
        for ( String parent : projectData.getStrings( ProjectConstants.PROJECT_PARENTS_PROPERTY ) )
        {
            project.addParent( ProjectName.from( parent ) );
        }
    }

    public ProjectName getName()
    {
        return name;
    }

    public String getDisplayName()
    {
        return displayName;
    }

    public String getDescription()
    {
        return description;
    }

    public Attachment getIcon()
    {
        return icon;
    }

    public List getParents()
    {
        return parents;
    }

    public ProjectName getParent()
    {
        return !parents.isEmpty() ? parents.get( 0 ) : null;
    }

    public SiteConfigs getSiteConfigs()
    {
        return siteConfigs;
    }

    public static final class Builder
    {
        private final SiteConfigs.Builder siteConfigs = SiteConfigs.create();

        private ProjectName name;

        private String displayName;

        private String description;

        private final ImmutableList.Builder parents = ImmutableList.builder();

        private Attachment icon;

        private Builder()
        {
        }

        public Builder name( final ProjectName value )
        {
            this.name = value;
            return this;
        }

        public Builder displayName( final String displayName )
        {
            this.displayName = displayName;
            return this;
        }

        public Builder description( final String description )
        {
            this.description = description;
            return this;
        }

        public Builder icon( final Attachment icon )
        {
            this.icon = icon;
            return this;
        }

        public Builder parent( final ProjectName parent )
        {
            this.parents.add( parent );
            return this;
        }

        public Builder addParent( final ProjectName parent )
        {
            this.parents.add( parent );
            return this;
        }

        public Builder addSiteConfig( final SiteConfig siteConfig )
        {
            this.siteConfigs.add( siteConfig );
            return this;
        }

        private void validate()
        {
            Preconditions.checkNotNull( name, "name cannot be null" );
        }


        public Project build()
        {
            validate();
            return new Project( this );
        }
    }
}