package de.unima.ki.demomatcher.seals;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;

import de.uma.alignment.matcher.demo.DemoMatcher;

import eu.sealsproject.platform.res.domain.omt.IOntologyMatchingToolBridge;
import eu.sealsproject.platform.res.tool.api.ToolBridgeException;
import eu.sealsproject.platform.res.tool.api.ToolException;
import eu.sealsproject.platform.res.tool.api.ToolType;
import eu.sealsproject.platform.res.tool.impl.AbstractPlugin;

public class MatcherBridge extends AbstractPlugin implements IOntologyMatchingToolBridge {

	/**
	* Aligns to ontologies specified via their URL and returns the 
	* URL of the resulting alignment, which should be stored locally.
	* 
	*/
	public URL align(URL source, URL target) throws ToolBridgeException, ToolException {
		DemoMatcher demoMatcher;
		try {
			demoMatcher = new DemoMatcher();
			try {
				String alignmentString = demoMatcher.align(source.toURI(), target.toURI());
				try {
					File alignmentFile = File.createTempFile("alignment", ".rdf");
					FileWriter fw = new FileWriter(alignmentFile);
					fw.write(alignmentString);
					fw.flush();
					fw.close();
					return alignmentFile.toURI().toURL();
				}
				catch (IOException e) {
					throw new ToolBridgeException("cannot create file for resulting alignment", e);
				}
			}
			catch (URISyntaxException e1) {
				throw new ToolBridgeException("cannot convert the input param to URI as required");
			}
		}
		catch (NumberFormatException numberFormatE) {
			throw new ToolBridgeException("cannot correctly read from configuration file", numberFormatE);
		}
		catch (IOException configE) {
			throw new ToolBridgeException("cannot access configuration file", configE);
		}	
		
	}

	/**
	* This functionality is not supported by the tool. In case
	* it is invoced a ToolException is thrown.
	*/
	public URL align(URL source, URL target, URL inputAlignment) throws ToolBridgeException, ToolException {
		throw new ToolException("functionality of called method is not supported");
	}

	/**
	* In our case the DemoMatcher can be executed on the fly. In case
	* prerequesites are required it can be checked here. 
	*/
	public boolean canExecute() {
		return true;
	}

	/**
	* The DemoMatcher is an ontology matching tool. SEALS supports the
	* evaluation of different tool types like e.g., reasoner and storage systems.
	*/
	public ToolType getType() {
		return ToolType.OntologyMatchingTool;
	}
	

}