/*
 * 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.arch.handlers;

import org.hisp.dhis.android.core.common.HandleAction;
import org.hisp.dhis.android.core.common.ModelBuilder;

import java.util.Collection;

abstract class SyncHandlerBaseImpl<O> implements SyncHandlerWithTransformer<O> {

    @Override
    public final void handle(O o) {
        if (o == null) {
            return;
        }
        O object = beforeObjectHandled(o);
        HandleAction action = deleteOrPersist(object);
        afterObjectHandled(object, action);
    }

    @Override
    public final void handle(O o, ModelBuilder<O, O> modelBuilder) {
        if (o == null) {
            return;
        }
        O oTransformed = modelBuilder.buildModel(o);
        O oFinal = beforeObjectHandled(oTransformed); // TODO delete?
        HandleAction action = deleteOrPersist(oFinal);
        afterObjectHandled(oFinal, action);
    }

    @Override
    public final void handleMany(Collection<O> oCollection) {
        if (oCollection != null) {
            for(O o : oCollection) {
                handle(o);
            }
            afterCollectionHandled(oCollection);
        }
    }

    @Override
    public final void handleMany(Collection<O> oCollection, ModelBuilder<O, O> modelBuilder) {
        if (oCollection != null) {
            for(O o : oCollection) {
                handle(o, modelBuilder);
            }
            afterCollectionHandled(oCollection);
        }
    }

    protected abstract HandleAction deleteOrPersist(O o);

    protected O beforeObjectHandled(O o) {
        return o;
    }

    @SuppressWarnings("PMD.EmptyMethodInAbstractClassShouldBeAbstract")
    protected void afterObjectHandled(O o, HandleAction action) {
        /* Method is not abstract since empty action is the default action and we don't want it to
         * be unnecessarily written in every child.
         */
    }

    @SuppressWarnings("PMD.EmptyMethodInAbstractClassShouldBeAbstract")
    protected void afterCollectionHandled(Collection<O> oCollection) {
        /* Method is not abstract since empty action is the default action and we don't want it to
         * be unnecessarily written in every child.
         */
    }
}

@@ -1928,51 +1928,8 @@
   %7D%0A
-        O object = beforeObjectHandled(o);%0A
     
@@ -1971,21 +1971,16 @@
 ersist(o
-bject
 );%0A     
@@ -2002,21 +2002,16 @@
 andled(o
-bject
 , action
@@ -2215,78 +2215,8 @@
 o);%0A
-        O oFinal = beforeObjectHandled(oTransformed); // TODO delete?%0A
     
@@ -2258,21 +2258,27 @@
 ersist(o
-Final
+Transformed
 );%0A     
@@ -2304,13 +2304,19 @@
 ed(o
-Final
+Transformed
 , ac
@@ -2949,76 +2949,8 @@
 );%0A%0A
-    protected O beforeObjectHandled(O o) %7B%0A        return o;%0A    %7D%0A%0A
     

remove beforeObjectPersisted, which can be modelled as a ModelBuilder