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/*
 * DISCLAIMER
 *
 * Copyright 2016 ArangoDB GmbH, Cologne, Germany
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright holder is ArangoDB GmbH, Cologne, Germany
 */

package com.arangodb.async.internal;

import com.arangodb.ArangoDBException;
import com.arangodb.async.ArangoDBAsync;
import com.arangodb.async.ArangoDatabaseAsync;
import com.arangodb.async.internal.velocystream.VstCommunicationAsync;
import com.arangodb.entity.*;
import com.arangodb.internal.*;
import com.arangodb.internal.net.CommunicationProtocol;
import com.arangodb.internal.net.HostResolver;
import com.arangodb.internal.util.ArangoSerializationFactory;
import com.arangodb.internal.util.ArangoSerializationFactory.Serializer;
import com.arangodb.internal.velocystream.VstCommunication;
import com.arangodb.internal.velocystream.VstCommunicationSync;
import com.arangodb.internal.velocystream.VstProtocol;
import com.arangodb.internal.velocystream.internal.VstConnectionSync;
import com.arangodb.model.DBCreateOptions;
import com.arangodb.model.LogOptions;
import com.arangodb.model.UserCreateOptions;
import com.arangodb.model.UserUpdateOptions;
import com.arangodb.velocystream.Request;
import com.arangodb.velocystream.Response;

import java.io.IOException;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;

/**
 * @author Mark Vollmary
 */
public class ArangoDBAsyncImpl extends InternalArangoDB implements ArangoDBAsync {

    private final CommunicationProtocol cp;

    public ArangoDBAsyncImpl(final VstCommunicationAsync.Builder commBuilder, final ArangoSerializationFactory util,
                             final VstCommunicationSync.Builder syncbuilder, final HostResolver hostResolver, final ArangoContext context) {

        super(new ArangoExecutorAsync(commBuilder.build(util.get(Serializer.INTERNAL)), util, new DocumentCache()), util, context);

        final VstCommunication cacheCom = syncbuilder.build(util.get(Serializer.INTERNAL));

        cp = new VstProtocol(cacheCom);

        ArangoExecutorSync arangoExecutorSync = new ArangoExecutorSync(cp, util, new DocumentCache());
        hostResolver.init(arangoExecutorSync, util.get(Serializer.INTERNAL));

    }

    @Override
    protected ArangoExecutorAsync executor() {
        return executor;
    }

    @Override
    public void shutdown() throws ArangoDBException {
        try {
            executor.disconnect();
            cp.close();
        } catch (final IOException e) {
            throw new ArangoDBException(e);
        }
    }

    @Override
    public ArangoDatabaseAsync db() {
        return db(ArangoRequestParam.SYSTEM);
    }

    @Override
    public ArangoDatabaseAsync db(final String name) {
        return new ArangoDatabaseAsyncImpl(this, name);
    }

    @Override
    public CompletableFuture createDatabase(final String name) {
        return createDatabase(new DBCreateOptions().name(name));
    }

    @Override
    public CompletableFuture createDatabase(DBCreateOptions options) {
        return executor.execute(createDatabaseRequest(options), createDatabaseResponseDeserializer());
    }

    @Override
    public CompletableFuture> getDatabases() {
        return executor.execute(getDatabasesRequest(db().name()), getDatabaseResponseDeserializer());
    }

    @Override
    public CompletableFuture> getAccessibleDatabases() {
        return db().getAccessibleDatabases();
    }

    @Override
    public CompletableFuture> getAccessibleDatabasesFor(final String user) {
        return executor.execute(getAccessibleDatabasesForRequest(db().name(), user),
                getAccessibleDatabasesForResponseDeserializer());
    }

    @Override
    public CompletableFuture getVersion() {
        return db().getVersion();
    }

    @Override
    public CompletableFuture getRole() {
        return executor.execute(getRoleRequest(), getRoleResponseDeserializer());
    }

    @Override
    public CompletableFuture createUser(final String user, final String passwd) {
        return executor.execute(createUserRequest(db().name(), user, passwd, new UserCreateOptions()),
                UserEntity.class);
    }

    @Override
    public CompletableFuture createUser(
            final String user,
            final String passwd,
            final UserCreateOptions options) {
        return executor.execute(createUserRequest(db().name(), user, passwd, options), UserEntity.class);
    }

    @Override
    public CompletableFuture deleteUser(final String user) {
        return executor.execute(deleteUserRequest(db().name(), user), Void.class);
    }

    @Override
    public CompletableFuture getUser(final String user) {
        return executor.execute(getUserRequest(db().name(), user), UserEntity.class);
    }

    @Override
    public CompletableFuture> getUsers() {
        return executor.execute(getUsersRequest(db().name()), getUsersResponseDeserializer());
    }

    @Override
    public CompletableFuture updateUser(final String user, final UserUpdateOptions options) {
        return executor.execute(updateUserRequest(db().name(), user, options), UserEntity.class);
    }

    @Override
    public CompletableFuture replaceUser(final String user, final UserUpdateOptions options) {
        return executor.execute(replaceUserRequest(db().name(), user, options), UserEntity.class);
    }

    @Override
    public CompletableFuture grantDefaultDatabaseAccess(final String user, final Permissions permissions) {
        return executor.execute(updateUserDefaultDatabaseAccessRequest(user, permissions), Void.class);
    }

    @Override
    public CompletableFuture grantDefaultCollectionAccess(final String user, final Permissions permissions) {
        return executor.execute(updateUserDefaultCollectionAccessRequest(user, permissions), Void.class);
    }

    @Override
    public CompletableFuture execute(final Request request) {
        return executor.execute(request, response -> response);
    }

    @Override
    public CompletableFuture getLogs(final LogOptions options) {
        return executor.execute(getLogsRequest(options), LogEntity.class);
    }

    @Override
    public CompletableFuture getLogLevel() {
        return executor.execute(getLogLevelRequest(), LogLevelEntity.class);
    }

    @Override
    public CompletableFuture setLogLevel(final LogLevelEntity entity) {
        return executor.execute(setLogLevelRequest(entity), LogLevelEntity.class);
    }
}