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package com.bytecode.dasnet.support.wicket;

import groovy.util.GroovyScriptEngine;
import groovy.util.ResourceException;
import groovy.util.ScriptException;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.wicket.application.IClassResolver;

/**
 *
 * @author dpanelli
 */
public class GroovyClassResolver implements IClassResolver {

    private String baseUrl;

    public GroovyClassResolver(String baseUrl) {
        this.baseUrl = baseUrl;
    }

    @Override
    public Class resolveClass(String classFqn) throws ClassNotFoundException {
        Class loadedClass = null;
        try {
            loadedClass = Class.forName(classFqn);
        } catch (ClassNotFoundException exception) {
            loadedClass = loadGroovyClass(classFqn);

        }

        if (loadedClass == null) {
            throw new ClassNotFoundException(classFqn);
        }

        return loadedClass;
    }

    protected Class loadGroovyClass(String fqn) {
        try {
            GroovyScriptEngine groovyScriptEngine = new GroovyScriptEngine(baseUrl);

            return groovyScriptEngine.loadScriptByName(fqn);
        } catch (IOException ex) {
            Logger.getLogger(GroovyClassResolver.class.getName()).log(Level.SEVERE, null, ex);
            throw new RuntimeException(ex);
        } catch (ResourceException ex) {
            Logger.getLogger(GroovyClassResolver.class.getName()).log(Level.SEVERE, null, ex);
            throw new RuntimeException(ex);
        } catch (ScriptException ex) {
            Logger.getLogger(GroovyClassResolver.class.getName()).log(Level.SEVERE, null, ex);
            throw new RuntimeException(ex);
        }
    }
}