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package it.niedermann.nextcloud.deck.persistence.sync.helpers;
import java.util.Date;
import java.util.List;
import it.niedermann.nextcloud.deck.DeckLog;
import it.niedermann.nextcloud.deck.api.IResponseCallback;
import it.niedermann.nextcloud.deck.model.Account;
import it.niedermann.nextcloud.deck.model.enums.DBStatus;
import it.niedermann.nextcloud.deck.model.interfaces.IRemoteEntity;
import it.niedermann.nextcloud.deck.persistence.sync.adapters.ServerAdapter;
import it.niedermann.nextcloud.deck.persistence.sync.adapters.db.DataBaseAdapter;
import it.niedermann.nextcloud.deck.persistence.sync.helpers.providers.AbstractSyncDataProvider;
import it.niedermann.nextcloud.deck.persistence.sync.helpers.providers.IRelationshipProvider;
public class SyncHelper {
private ServerAdapter serverAdapter;
private DataBaseAdapter dataBaseAdapter;
private Account account;
private long accountId;
private IResponseCallback<Boolean> responseCallback;
private Date lastSync;
public SyncHelper(ServerAdapter serverAdapter, DataBaseAdapter dataBaseAdapter, Date lastSync) {
this.serverAdapter = serverAdapter;
this.dataBaseAdapter = dataBaseAdapter;
this.lastSync = lastSync;
}
// Sync Server -> App
public <T extends IRemoteEntity> void doSyncFor(final AbstractSyncDataProvider<T> provider){
provider.registerChildInParent(provider);
provider.getAllFromServer(serverAdapter, accountId, new IResponseCallback<List<T>>(account) {
@Override
public void onResponse(List<T> response) {
if (response != null && !response.isEmpty()) {
provider.goingDeeper();
for (T entityFromServer : response) {
entityFromServer.setAccountId(accountId);
T existingEntity = provider.getSingleFromDB(dataBaseAdapter, accountId, entityFromServer);
if (existingEntity == null) {
provider.createInDB(dataBaseAdapter, accountId, entityFromServer);
} else {
//TODO: how to handle deletes? what about archived?
if (existingEntity.getStatus() != DBStatus.UP_TO_DATE.getId()){
DeckLog.log("Conflicting changes on entity: "+existingEntity);
// TODO: what to do?
} else {
// if (existingEntity.getLastModified().getTime() == entityFromServer.getLastModified().getTime()) {
// continue; // TODO: is this is ok for sure? -> isn`t! NPE
// }
provider.updateInDB(dataBaseAdapter, accountId, applyUpdatesFromRemote(provider, existingEntity, entityFromServer, accountId), false);
}
}
existingEntity = provider.getSingleFromDB(dataBaseAdapter, accountId, entityFromServer);
provider.goDeeper(SyncHelper.this, existingEntity, entityFromServer, responseCallback);
}
provider.handleDeletes(serverAdapter, dataBaseAdapter, accountId, response);
provider.doneGoingDeeper(responseCallback, true);
} else {
provider.childDone(provider, responseCallback, false);
}
}
@Override
public void onError(Throwable throwable) {
provider.onError(throwable, responseCallback);
DeckLog.logError(throwable);
responseCallback.onError(throwable);
}
}, lastSync);
}
// Sync App -> Server
public <T extends IRemoteEntity> void doUpSyncFor(AbstractSyncDataProvider<T> provider){
List<T> allFromDB = provider.getAllChangedFromDB(dataBaseAdapter, accountId, lastSync);
if (allFromDB != null && !allFromDB.isEmpty()) {
for (T entity : allFromDB) {
if (entity.getId()!=null) {
if (entity.getStatusEnum() == DBStatus.LOCAL_DELETED) {
provider.deleteOnServer(serverAdapter, accountId, getDeleteCallback(provider, entity), entity, dataBaseAdapter);
} else {
provider.updateOnServer(serverAdapter, dataBaseAdapter, accountId, getUpdateCallback(provider, entity), entity);
}
} else {
provider.createOnServer(serverAdapter, dataBaseAdapter, accountId, getUpdateCallback(provider, entity), entity);
}
}
} else {
provider.goDeeperForUpSync(this, serverAdapter, dataBaseAdapter, responseCallback);
}
}
private <T extends IRemoteEntity> IResponseCallback<Void> getDeleteCallback(AbstractSyncDataProvider<T> provider, T entity) {
return new IResponseCallback<Void>(account) {
@Override
public void onResponse(Void response) {
provider.deleteInDB(dataBaseAdapter, accountId, entity);
provider.goDeeperForUpSync(SyncHelper.this, serverAdapter, dataBaseAdapter, responseCallback);
}
@Override
public void onError(Throwable throwable) {
super.onError(throwable);
responseCallback.onError(throwable);
}
};
}
private <T extends IRemoteEntity> IResponseCallback<T> getUpdateCallback(AbstractSyncDataProvider<T> provider, T entity) {
return new IResponseCallback<T>(account) {
@Override
public void onResponse(T response) {
response.setAccountId(this.account.getId());
T update = applyUpdatesFromRemote(provider, entity, response, accountId);
update.setStatus(DBStatus.UP_TO_DATE.getId());
provider.updateInDB(dataBaseAdapter, accountId, update, false);
provider.goDeeperForUpSync(SyncHelper.this, serverAdapter, dataBaseAdapter, responseCallback);
}
@Override
public void onError(Throwable throwable) {
super.onError(throwable);
responseCallback.onError(throwable);
}
};
}
public void fixRelations(IRelationshipProvider relationshipProvider) {
// this is OK, since the delete only affects records with status UP_TO_DATE
relationshipProvider.deleteAllExisting(dataBaseAdapter, accountId);
relationshipProvider.insertAllNecessary(dataBaseAdapter, accountId);
}
private <T extends IRemoteEntity> T applyUpdatesFromRemote(AbstractSyncDataProvider<T> provider, T localEntity, T remoteEntity, Long accountId) {
if (!accountId.equals(localEntity.getAccountId())) {
throw new IllegalArgumentException("IDs of Accounts are not matching! WTF are you doin?!");
}
remoteEntity.setLocalId(localEntity.getLocalId());
remoteEntity = provider.applyUpdatesFromRemote(localEntity, remoteEntity, accountId);
return remoteEntity;
}
public SyncHelper setResponseCallback(IResponseCallback<Boolean> callback) {
this.responseCallback = callback;
this.account = responseCallback.getAccount();
accountId = account.getId();
return this;
}
}
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