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/*
* Fabric3
* Copyright (c) 2009-2013 Metaform Systems
*
* Fabric3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the
* GNU General Public License along with Fabric3.
* If not, see .
*/
package org.fabric3.implementation.web.runtime;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.File;
import java.net.URI;
import java.util.Collection;

import org.fabric3.api.Fabric3ComponentContext;
import org.fabric3.container.web.spi.WebRequestTunnel;
import org.fabric3.host.Fabric3RuntimeException;
import org.fabric3.host.runtime.HostInfo;
import org.fabric3.spi.objectfactory.ObjectCreationException;
import org.oasisopen.sca.RequestContext;
import org.oasisopen.sca.ServiceReference;
import org.oasisopen.sca.ServiceRuntimeException;

/**
 * Implementation of ComponentContext for Web components.
 */
public class OASISWebComponentContext implements Fabric3ComponentContext {
    private final WebComponent component;
    private HostInfo info;

    public OASISWebComponentContext(WebComponent component, HostInfo info) {
        this.component = component;
        this.info = info;
    }

    public String getURI() {
        try {
            return component.getUri().toString();
        } catch (Fabric3RuntimeException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        }
    }

    @SuppressWarnings({"unchecked"})
    public > R cast(B target) throws IllegalArgumentException {
        try {
            return (R) component.cast(target);
        } catch (Fabric3RuntimeException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        }
    }

    public  B getService(Class interfaze, String referenceName) {
        try {
            return interfaze.cast(getSession().getAttribute(referenceName));
        } catch (Fabric3RuntimeException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        }
    }

    @SuppressWarnings({"unchecked"})
    public  ServiceReference getServiceReference(Class interfaze, String referenceName) {
        try {
            return ServiceReference.class.cast(getSession().getAttribute(referenceName));
        } catch (Fabric3RuntimeException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        }
    }

    public  Collection getServices(Class interfaze, String referenceName) {
        throw new UnsupportedOperationException();
    }

    public  Collection> getServiceReferences(Class interfaze, String referenceName) {
        throw new UnsupportedOperationException();
    }

    public  B getProperty(Class type, String propertyName) {
        try {
            return component.getProperty(type, propertyName);
        } catch (ObjectCreationException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        } catch (Fabric3RuntimeException e) {
            throw new ServiceRuntimeException(e.getMessage(), e);
        }
    }

    public  ServiceReference createSelfReference(Class businessInterface) {
        return null;
    }

    public  ServiceReference createSelfReference(Class businessInterface, String serviceName) {
        return null;
    }

    public RequestContext getRequestContext() {
        return null;
    }

    public String getRuntimeName() {
        return info.getRuntimeName();
    }

    public URI getDomain() {
        return info.getDomain();
    }

    public String getEnvironment() {
        return info.getEnvironment();
    }

    public File getDataDirectory() {
        return info.getDataDir();
    }

    public File getTempDirectory() {
        return info.getTempDir();
    }

    private HttpSession getSession() {
        HttpServletRequest request = WebRequestTunnel.getRequest();
        if (request == null) {
            throw new ServiceRuntimeException("HTTP request not bound. Check filter configuration.");
        }
        return request.getSession(true);  // force creation of session
    }

}