org.mythtv.service.frontends.v26.StatusHelperV26.java Source code

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Here is the source code for org.mythtv.service.frontends.v26.StatusHelperV26.java

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/**
 * This file is part of MythTV Android Frontend
 *
 * MythTV Android Frontend 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.
 *
 * MythTV Android Frontend 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 MythTV Android Frontend.  If not, see <http://www.gnu.org/licenses/>.
 *
 * This software can be found at <https://github.com/MythTV-Clients/MythTV-Android-Frontend/>
 */
/**
 * 
 */
package org.mythtv.service.frontends.v26;

import java.util.ArrayList;
import java.util.List;

import org.mythtv.client.ui.preferences.LocationProfile;
import org.mythtv.db.AbstractBaseHelper;
import org.mythtv.db.frontends.model.State;
import org.mythtv.db.frontends.model.StateStringItem;
import org.mythtv.db.frontends.model.Status;
import org.mythtv.service.util.NetworkHelper;
import org.mythtv.services.api.ApiVersion;
import org.mythtv.services.api.ETagInfo;
import org.mythtv.services.api.connect.MythAccessFactory;
import org.mythtv.services.api.v026.MythServicesTemplate;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;

import android.content.Context;
import android.content.OperationApplicationException;
import android.os.RemoteException;
import android.util.Log;

/**
 * @author Daniel Frey
 *
 */
public class StatusHelperV26 extends AbstractBaseHelper {

    private static final String TAG = StatusHelperV26.class.getSimpleName();

    private static final ApiVersion mApiVersion = ApiVersion.v026;

    private static MythServicesTemplate mMythServicesTemplate;

    private static StatusHelperV26 singleton;

    /**
     * Returns the one and only StatusHelperV26. init() must be called before 
     * any 
     * @return
     */
    public static StatusHelperV26 getInstance() {
        if (null == singleton) {

            synchronized (StatusHelperV26.class) {

                if (null == singleton) {
                    singleton = new StatusHelperV26();
                }

            }

        }

        return singleton;
    }

    /**
     * Constructor. No one but getInstance() can do this.
     */
    private StatusHelperV26() {
    }

    public Status process(final Context context, final LocationProfile locationProfile, final String url) {
        Log.v(TAG, "process : enter");

        if (!NetworkHelper.getInstance().isFrontendConnected(context, locationProfile, url)) {
            Log.w(TAG, "process : Frontend @ '" + url + "' is unreachable");

            return null;
        }

        mMythServicesTemplate = (MythServicesTemplate) MythAccessFactory.getServiceTemplateApiByVersion(mApiVersion,
                url);
        if (null == mMythServicesTemplate) {
            Log.w(TAG, "process : Master Backend '" + locationProfile.getHostname() + "' is unreachable");

            return null;
        }

        Status status = null;

        try {

            status = downloadStatus(locationProfile, url);

        } catch (Exception e) {
            Log.e(TAG, "process : error", e);

            status = null;
        }

        Log.v(TAG, "process : exit");
        return status;
    }

    // internal helpers

    private Status downloadStatus(final LocationProfile locationProfile, final String url)
            throws RemoteException, OperationApplicationException {
        Log.v(TAG, "downloadHosts : enter");

        Status status = null;

        ResponseEntity<org.mythtv.services.api.v026.beans.FrontendStatus> responseEntity = mMythServicesTemplate
                .frontendOperations().getStatus(ETagInfo.createEmptyETag());

        if (responseEntity.getStatusCode().equals(HttpStatus.OK)) {

            org.mythtv.services.api.v026.beans.FrontendStatus versionStatus = responseEntity.getBody();

            if (null != versionStatus) {
                status = load(versionStatus);
            }

        }

        Log.v(TAG, "downloadHosts : exit");
        return status;
    }

    private Status load(org.mythtv.services.api.v026.beans.FrontendStatus versionStatus) {
        Log.v(TAG, "load : enter");

        Status status = new Status();

        if (null != versionStatus.getState()) {

            State state = new State();

            if (null != versionStatus.getState() && !versionStatus.getState().isEmpty()) {

                List<StateStringItem> items = new ArrayList<StateStringItem>();
                for (String versionItem : versionStatus.getState().keySet()) {
                    StateStringItem item = new StateStringItem();
                    item.setKey(versionItem);
                    item.setValue(versionStatus.getState().get(versionItem));

                    items.add(item);
                }

                state.setStates(items);
            }

            status.setState(state);
        }

        Log.v(TAG, "load : exit");
        return status;
    }

}