package org.gcube.spatial.data.sdi.engine.impl.metadata.templates;

import org.gcube.spatial.data.sdi.engine.impl.metadata.MetadataHandler;
import org.gcube.spatial.data.sdi.engine.impl.metadata.MetadataUtils;
import org.gcube.spatial.data.sdi.engine.impl.metadata.MetadataUtils.Position;
import org.gcube.spatial.data.sdi.engine.impl.metadata.templates.ThreddsOnlineTemplate.ThreddsOnlineRequest;
import org.gcube.spatial.data.sdi.model.metadata.TemplateDescriptor;
import org.gcube.spatial.data.sdi.model.metadata.TemplateInvocation;
import org.gcube.spatial.data.sdi.model.metadata.ThreddsOnlineTemplateInvocation;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.ToString;

public class ThreddsOnlineTemplate extends AbstractTemplate<ThreddsOnlineRequest> {

	private static String TEMPLATE_ID="THREDDS-ONLINE";
	private static String TEMPLATE_NAME="Thredds Online Resources";
	private static String FILENAME="ThreddsOnlineResources.ftlx";
	private static InsertionPoint INSERTION=new InsertionPoint(Position.sibling_after, ""); 
	private static TemplateDescriptor DESCRIPTOR=new TemplateDescriptor(TEMPLATE_ID, TEMPLATE_NAME, "Template for online resources exposed by thredds.", "http://sdi-d4s.d4science.org");
	
	
	public ThreddsOnlineTemplate() {
		super(FILENAME, INSERTION, DESCRIPTOR);
	}
	
	
	@Getter
	@AllArgsConstructor
	@ToString
	public static class ThreddsOnlineRequest{
		private String hostname;
		private String catalog;
		private String filename;
		private String gisViewerLink;
	}

	@Override
	public ThreddsOnlineRequest getInstantiationRequest(MetadataHandler handler, TemplateInvocation invocation) throws InvalidTemplateInvocationException,Exception{
		try{
			ThreddsOnlineTemplateInvocation threddsInvocation=(ThreddsOnlineTemplateInvocation) invocation;
			String uuid=handler.getUUID();
			String gisLink=MetadataUtils.getGisLinkByUUID(uuid);
			return new ThreddsOnlineRequest(threddsInvocation.getHostname(), threddsInvocation.getCatalog(), threddsInvocation.getFilename(), gisLink);
		}catch(ClassCastException e){
			throw new InvalidTemplateInvocationException("Invalid invocation type : "+invocation.getClass());
		}
	}

}