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/*
 *  Copyright 2013 by The Cogchar Project (www.cogchar.org).
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.cogchar.lifter.generation;

import com.hp.hpl.jena.rdf.model.Model;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;
import org.appdapter.fancy.rclient.RepoClient;
import org.jflux.api.service.ServiceDependency;
import org.jflux.api.service.ServiceLifecycle;
import org.cogchar.api.thing.WantsThingAction;

/**
 * This collects the needed information for the Generator, the location to push
 * the lifter page data and the location to push the TA to trigger its display.
 * 
 * @author Jason Randolph Eads 
 */
public class LifterAnswerPageGeneratorLifecycle implements
        ServiceLifecycle {
    
    private final static Logger theLogger = Logger.getLogger(
            LifterAnswerPageGeneratorLifecycle.class.getName());
    
    /**
     * This provides the classnames for use in JFlux.
     */
    private final static String[] theClassNameArray = new String[] {
        WantsThingAction.class.getName(), 
        LifterAnswerPageGenerator.class.getName()};
    
    public final static String theLifterAnswerPageGeneratorSpec =
            "lifterAnswerPageGeneratorSpec";
    
    public static final String theQueryInterface = "queryInterface";
    
    /**
     * This provides the dependencies which JFlux will provide.
     * 
     * The spec provides the URIs for the Models that are required.
     * 
     * The RepoClient provides a means of retrieving the Models.
     */
    private final static ServiceDependency[] theDependencyArray = {
        new ServiceDependency(
            theLifterAnswerPageGeneratorSpec, 
            LifterAnswerPageGeneratorSpec.class.getName(),
            ServiceDependency.Cardinality.MANDATORY_UNARY,
            ServiceDependency.UpdateStrategy.STATIC,
            Collections.EMPTY_MAP),
        new ServiceDependency(
            theQueryInterface,
            RepoClient.class.getName(),
            ServiceDependency.Cardinality.MANDATORY_UNARY,
            ServiceDependency.UpdateStrategy.STATIC, 
            Collections.EMPTY_MAP)
    };
    
    //Lifecycle Constructor - required for automated assembly
    public LifterAnswerPageGeneratorLifecycle() {}

    @Override
    public List getDependencySpecs() {
        return Arrays.asList(theDependencyArray);
    }

    @Override
    public WantsThingAction createService(Map dependencyMap) {
        
        // Collect the LifterAnswerPageGenerator specification
        LifterAnswerPageGeneratorSpec mySpec = 
                (LifterAnswerPageGeneratorSpec)dependencyMap.get(
                    theLifterAnswerPageGeneratorSpec);
        
        // Collect the Query-Repo interface
        RepoClient repoClient = (RepoClient)dependencyMap.get(
                theQueryInterface);
        
        // Collect the lifter page recieving Model
        Model lifterModelReadonly = repoClient.getNamedModelReadonly(mySpec.getLifterModelURI());  // FIXME
        
        
        // Collect the TA recieving Model
        Model thingActionModelReadonly = repoClient.getNamedModelReadonly(mySpec.getThingActionModelURI());  // FIXME
        
        // Instance the pageGenerator
        LifterAnswerPageGenerator pageGen = new LifterAnswerPageGenerator(
                lifterModelReadonly, 
                thingActionModelReadonly);
        
        //TODO: confirm... is this enough?
        // does it need nothing more to get into the TA router?
        
        return pageGen;
    }

    @Override
    public WantsThingAction handleDependencyChange(
            WantsThingAction service, 
            String changeType, 
            String dependencyName, 
            Object dependency, 
            Map availableDependencies) {
        
        
        // if spec lost, dispose?
        
        // if spec changed, dispose and create?
        
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void disposeService(WantsThingAction t, Map map) {
        
        //TODO: confirm: remove from router somehow?
        
        
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public String[] getServiceClassNames() {
        return theClassNameArray;
    }
    
    
    
    
    
}