/*
 * Copyright (c) 2017, University of Oslo
 *
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.android.core.calls;

import org.hisp.dhis.android.core.common.CallException;
import org.hisp.dhis.android.core.common.GenericCallData;
import org.hisp.dhis.android.core.data.database.Transaction;

import retrofit2.Response;

public abstract class TransactionalCall implements Call<Response> {
    private boolean isExecuted;
    protected final GenericCallData data;

    protected TransactionalCall(GenericCallData data) {
        this.data = data;
    }

    @Override
    public final boolean isExecuted() {
        synchronized (this) {
            return isExecuted;
        }
    }

    public abstract Response callBody() throws Exception;

    @Override
    public final Response call() throws Exception {
        synchronized (this) {
            if (isExecuted) {
                throw new IllegalStateException("Already executed");
            }

            isExecuted = true;
        }

        Transaction transaction = data.databaseAdapter().beginNewTransaction();
        try {
            Response response = callBody();
            transaction.setSuccessful();
            return response;
        } catch (CallException e) {
            return e.response();
        } finally {
            transaction.end();
        }
    }
}

/*
 * Copyright (c) 2017, University of Oslo
 *
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.android.core.calls;

import org.hisp.dhis.android.core.common.CallException;
import org.hisp.dhis.android.core.common.GenericCallData;
import org.hisp.dhis.android.core.common.SyncCall;
import org.hisp.dhis.android.core.data.database.Transaction;

import retrofit2.Response;

public abstract class TransactionalCall extends SyncCall {
    protected final GenericCallData data;

    protected TransactionalCall(GenericCallData data) {
        this.data = data;
    }

    public abstract Response callBody() throws Exception;

    @Override
    public final Response call() throws Exception {
        super.setExecuted();

        Transaction transaction = data.databaseAdapter().beginNewTransaction();
        try {
            Response response = callBody();
            transaction.setSuccessful();
            return response;
        } catch (CallException e) {
            return e.response();
        } finally {
            transaction.end();
        }
    }
}

make TransactionalCall extend SyncCall