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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

using System.Globalization;
using Org.Apache.REEF.Driver;
using Org.Apache.REEF.Driver.Bridge;
using Org.Apache.REEF.Network.Examples.GroupCommunication;
using Org.Apache.REEF.Network.Examples.GroupCommunication.BroadcastReduceDriverAndTasks;
using Org.Apache.REEF.Network.Group.Config;
using Org.Apache.REEF.Network.Naming;
using Org.Apache.REEF.Tang.Implementations.Configuration;
using Org.Apache.REEF.Tang.Implementations.Tang;
using Org.Apache.REEF.Tang.Interface;
using Org.Apache.REEF.Tang.Util;
using Org.Apache.REEF.Utilities.Logging;
using Xunit;

namespace Org.Apache.REEF.Tests.Functional.Group
{
    [Collection("FunctionalTests")]
    public class BroadcastReduceTest : ReefFunctionalTest
    {
        [Fact]
        public void TestBroadcastAndReduceOnLocalRuntime()
        {
            int numTasks = 9;
            string testFolder = DefaultRuntimeFolder + TestId;
            TestBroadcastAndReduce(false, numTasks, testFolder);
            ValidateSuccessForLocalRuntime(numTasks, testFolder: testFolder);
            CleanUp(testFolder);
        }

        [Fact(Skip = "Requires Yarn")]
        public void TestBroadcastAndReduceOnYarn()
        {
            int numTasks = 9;
            string testFolder = DefaultRuntimeFolder + TestId + "Yarn";
            TestBroadcastAndReduce(true, numTasks, testFolder);
        }

        private void TestBroadcastAndReduce(bool runOnYarn, int numTasks, string testFolder)
        {
            string runPlatform = runOnYarn ? "yarn" : "local";
            TestRun(DriverConfigurations(numTasks), typeof(BroadcastReduceDriver), numTasks, "BroadcastReduceDriver", runPlatform, testFolder);
        }

        private IConfiguration DriverConfigurations(int numTasks)
        {
            IConfiguration driverConfig = TangFactory.GetTang().NewConfigurationBuilder(
                DriverConfiguration.ConfigurationModule
                    .Set(DriverConfiguration.OnDriverStarted, GenericType<BroadcastReduceDriver>.Class)
                    .Set(DriverConfiguration.OnEvaluatorAllocated, GenericType<BroadcastReduceDriver>.Class)
                    .Set(DriverConfiguration.OnEvaluatorFailed, GenericType<BroadcastReduceDriver>.Class)
                    .Set(DriverConfiguration.OnContextActive, GenericType<BroadcastReduceDriver>.Class)
                    .Set(DriverConfiguration.CustomTraceLevel, Level.Info.ToString())
                    .Build())
                .BindNamedParameter<GroupTestConfig.NumIterations, int>(
                    GenericType<GroupTestConfig.NumIterations>.Class,
                    GroupTestConstants.NumIterations.ToString(CultureInfo.InvariantCulture))
                .BindNamedParameter<GroupTestConfig.NumEvaluators, int>(
                    GenericType<GroupTestConfig.NumEvaluators>.Class,
                    numTasks.ToString(CultureInfo.InvariantCulture))
                .Build();

            IConfiguration groupCommDriverConfig = TangFactory.GetTang().NewConfigurationBuilder()
                .BindStringNamedParam<GroupCommConfigurationOptions.DriverId>(GroupTestConstants.DriverId)
                .BindStringNamedParam<GroupCommConfigurationOptions.MasterTaskId>(GroupTestConstants.MasterTaskId)
                .BindStringNamedParam<GroupCommConfigurationOptions.GroupName>(GroupTestConstants.GroupName)
                .BindIntNamedParam<GroupCommConfigurationOptions.FanOut>(GroupTestConstants.FanOut.ToString(CultureInfo.InvariantCulture).ToString(CultureInfo.InvariantCulture))
                .BindIntNamedParam<GroupCommConfigurationOptions.NumberOfTasks>(numTasks.ToString(CultureInfo.InvariantCulture))
                .Build();

            return Configurations.Merge(driverConfig, groupCommDriverConfig);
        }
    }
}