// Copyright (C) Stichting Deltares 2017. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.IO;
using System.Linq;
using Core.Common.Base;
using Core.Common.Base.Service;
using Core.Common.TestUtil;
using Core.Common.Util;
using NUnit.Framework;
using Rhino.Mocks;
using Ringtoets.Common.Data.Hydraulics;
using Ringtoets.Common.Data.TestUtil;
using Ringtoets.Common.Service;
using Ringtoets.Common.Service.TestUtil;
using Ringtoets.DuneErosion.Data;
using Ringtoets.DuneErosion.Data.TestUtil;
using Ringtoets.HydraRing.Calculation.Calculator.Factory;
using Ringtoets.HydraRing.Calculation.Data.Input.Hydraulics;
using Ringtoets.HydraRing.Calculation.TestUtil.Calculator;

namespace Ringtoets.DuneErosion.Service.Test
{
    [TestFixture]
    public class DuneLocationCalculationActivityTest
    {
        private MockRepository mockRepository;
        private static readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Integration.Service, "HydraRingCalculation");
        private static readonly string validFilePath = Path.Combine(testDataPath, "HRD dutch coast south.sqlite");
        private static readonly string validPreprocessorDirectory = TestHelper.GetScratchPadPath();

        [SetUp]
        public void SetUp()
        {
            mockRepository = new MockRepository();
        }

        [Test]
        public void Constructor_ExpectedValues()
        {
            // Setup
            var duneLocation = new TestDuneLocation();
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            // Call
            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               1.0 / 30000);

            // Assert
            Assert.IsInstanceOf<CalculatableActivity>(activity);
            Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}'", activity.Description);
            Assert.IsNull(activity.ProgressText);
            Assert.AreEqual(ActivityState.None, activity.State);
        }

        [Test]
        public void Constructor_DuneLocationCalculationNull_ThrowArgumentNullException()
        {
            // Call
            TestDelegate test = () => new DuneLocationCalculationActivity(null,
                                                                          validFilePath,
                                                                          validPreprocessorDirectory,
                                                                          1.0 / 30000);

            // Assert
            var exception = Assert.Throws<ArgumentNullException>(test);
            Assert.AreEqual("duneLocationCalculation", exception.ParamName);
        }

        [Test]
        public void Run_InvalidHydraulicBoundaryDatabase_PerformValidationAndLogStartAndEndAndError()
        {
            // Setup
            string invalidFilePath = Path.Combine(testDataPath, "notexisting.sqlite");

            var duneLocation = new TestDuneLocation("testLocation");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               invalidFilePath,
                                                               validPreprocessorDirectory,
                                                               0.5);

            // Call
            Action call = () => activity.Run();

            // Assert
            TestHelper.AssertLogMessages(call, messages =>
            {
                string[] msgs = messages.ToArray();
                Assert.AreEqual(4, msgs.Length);

                Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}' is gestart.", msgs[0]);
                CalculationServiceTestHelper.AssertValidationStartMessage(msgs[1]);
                StringAssert.StartsWith("Herstellen van de verbinding met de hydraulische randvoorwaardendatabase is mislukt. Fout bij het lezen van bestand", msgs[2]);
                CalculationServiceTestHelper.AssertValidationEndMessage(msgs[3]);
            });
            Assert.AreEqual(ActivityState.Failed, activity.State);
        }

        [Test]
        public void Run_InvalidPreprocessorDirectory_PerformValidationAndLogStartAndEndAndError()
        {
            // Setup
            const string invalidPreprocessorDirectory = "NonExistingPreprocessorDirectory";
            var duneLocation = new TestDuneLocation("testLocation");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               invalidPreprocessorDirectory,
                                                               0.5);

            // Call
            Action call = () => activity.Run();

            // Assert
            TestHelper.AssertLogMessages(call, messages =>
            {
                string[] msgs = messages.ToArray();
                Assert.AreEqual(4, msgs.Length);

                Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}' is gestart.", msgs[0]);
                CalculationServiceTestHelper.AssertValidationStartMessage(msgs[1]);
                Assert.AreEqual("De bestandsmap waar de preprocessor bestanden opslaat is ongeldig. De bestandsmap bestaat niet.", msgs[2]);
                CalculationServiceTestHelper.AssertValidationEndMessage(msgs[3]);
            });
            Assert.AreEqual(ActivityState.Failed, activity.State);
        }

        [Test]
        public void Run_InvalidNorm_PerformValidationAndLogStartAndEndAndError()
        {
            // Setup
            var duneLocation = new TestDuneLocation("testLocation");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               1.0);

            // Call
            Action call = () => activity.Run();

            // Assert
            TestHelper.AssertLogMessages(call, messages =>
            {
                string[] msgs = messages.ToArray();
                Assert.AreEqual(4, msgs.Length);

                Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}' is gestart.", msgs[0]);
                CalculationServiceTestHelper.AssertValidationStartMessage(msgs[1]);
                Assert.AreEqual("Doelkans is te groot om een berekening uit te kunnen voeren.", msgs[2]);
                CalculationServiceTestHelper.AssertValidationEndMessage(msgs[3]);
            });
            Assert.AreEqual(ActivityState.Failed, activity.State);
        }

        [Test]
        public void Run_ValidInput_PerformValidationAndCalculationAndLogStartAndEnd()
        {
            // Setup
            const double norm = 1.0 / 30;

            var duneLocation = new TestDuneLocation("some name");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);
            var calculator = new TestDunesBoundaryConditionsCalculator
            {
                Converged = true
            };

            var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
            calculatorFactory.Expect(cf => cf.CreateDunesBoundaryConditionsCalculator(testDataPath, validPreprocessorDirectory)).Return(calculator);
            mockRepository.ReplayAll();

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               norm);

            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
            {
                // Call
                Action call = () => activity.Run();

                // Assert
                TestHelper.AssertLogMessages(call, m =>
                {
                    string[] messages = m.ToArray();
                    Assert.AreEqual(6, messages.Length);
                    Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}' is gestart.", messages[0]);
                    CalculationServiceTestHelper.AssertValidationStartMessage(messages[1]);
                    CalculationServiceTestHelper.AssertValidationEndMessage(messages[2]);
                    CalculationServiceTestHelper.AssertCalculationStartMessage(messages[3]);
                    StringAssert.StartsWith("Hydraulische randvoorwaarden berekening is uitgevoerd op de tijdelijke locatie", messages[4]);
                    CalculationServiceTestHelper.AssertCalculationEndMessage(messages[5]);
                });

                DunesBoundaryConditionsCalculationInput calculationInput = calculator.ReceivedInputs.Single();

                Assert.AreEqual(duneLocation.Id, calculationInput.HydraulicBoundaryLocationId);
                Assert.AreEqual(StatisticsConverter.ProbabilityToReliability(norm), calculationInput.Beta);
            }

            Assert.AreEqual(ActivityState.Executed, activity.State);
            mockRepository.VerifyAll();
        }

        [Test]
        public void Run_OutputSet_ValidationAndCalculationNotPerformedAndStateSkipped()
        {
            // Setup
            var duneLocationCalculation = new DuneLocationCalculation(new TestDuneLocation())
            {
                Output = new TestDuneLocationCalculationOutput()
            };

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               0.5);

            // Call
            activity.Run();

            // Assert
            Assert.AreEqual(ActivityState.Skipped, activity.State);
        }

        [Test]
        public void Run_ValidCalculationAndRun_SetsOutput()
        {
            // Setup
            var random = new Random(123);
            double expectedWaterLevel = random.NextDouble();
            double expectedWaveHeight = random.NextDouble();
            double expectedWavePeriod = random.NextDouble();
            double expectedReliabilityIndex = random.NextDouble();

            var duneLocationCalculation = new DuneLocationCalculation(new TestDuneLocation());
            var calculator = new TestDunesBoundaryConditionsCalculator
            {
                WaterLevel = expectedWaterLevel,
                WaveHeight = expectedWaveHeight,
                WavePeriod = expectedWavePeriod,
                ReliabilityIndex = expectedReliabilityIndex,
                Converged = true
            };

            var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
            calculatorFactory.Expect(cf => cf.CreateDunesBoundaryConditionsCalculator(testDataPath, validPreprocessorDirectory)).Return(calculator);
            mockRepository.ReplayAll();

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               0.005);

            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
            {
                // Call
                activity.Run();
            }

            // Assert
            DuneLocationCalculationOutput actualCalculationOutput = duneLocationCalculation.Output;
            Assert.IsNotNull(actualCalculationOutput);
            Assert.AreEqual(expectedWaterLevel, actualCalculationOutput.WaterLevel, actualCalculationOutput.WaterLevel.GetAccuracy());
            Assert.AreEqual(expectedWaveHeight, actualCalculationOutput.WaveHeight, actualCalculationOutput.WaveHeight.GetAccuracy());
            Assert.AreEqual(expectedWavePeriod, actualCalculationOutput.WavePeriod, actualCalculationOutput.WavePeriod.GetAccuracy());
            Assert.AreEqual(expectedReliabilityIndex, actualCalculationOutput.CalculatedReliability, actualCalculationOutput.CalculatedReliability.GetAccuracy());
            Assert.AreEqual(CalculationConvergence.CalculatedConverged, actualCalculationOutput.CalculationConvergence);
            mockRepository.VerifyAll();
        }

        [Test]
        [TestCaseSource(typeof(HydraRingCalculatorTestCaseProvider), nameof(HydraRingCalculatorTestCaseProvider.GetCalculatorFailingConditionsWithReportDetails), new object[]
        {
            nameof(Run_InvalidCalculation_LogsError)
        })]
        public void Run_InvalidCalculation_LogsError(bool endInFailure, string lastErrorFileContent, string detailedReport)
        {
            // Setup
            var calculator = new TestDunesBoundaryConditionsCalculator
            {
                EndInFailure = endInFailure,
                LastErrorFileContent = lastErrorFileContent
            };

            var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
            calculatorFactory.Expect(cf => cf.CreateDunesBoundaryConditionsCalculator(testDataPath, validPreprocessorDirectory)).Return(calculator);
            mockRepository.ReplayAll();

            var duneLocation = new TestDuneLocation("dune location");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               0.5);

            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
            {
                // Call
                Action call = () => activity.Run();

                // Assert
                string calculationfailedMessage = $"Hydraulische randvoorwaarden berekening voor locatie '{duneLocation.Name}' is mislukt. {detailedReport}";
                TestHelper.AssertLogMessageIsGenerated(call, calculationfailedMessage, 7);
            }

            mockRepository.VerifyAll();
        }

        [Test]
        public void Run_CalculationResultingInNoConvergence_LogWarningNoConvergence()
        {
            // Setup
            var calculator = new TestDunesBoundaryConditionsCalculator
            {
                Converged = false
            };

            var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
            calculatorFactory.Expect(cf => cf.CreateDunesBoundaryConditionsCalculator(testDataPath, validPreprocessorDirectory)).Return(calculator);
            mockRepository.ReplayAll();

            var duneLocation = new TestDuneLocation("some name");
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               0.5);

            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
            {
                Action call = () => activity.Run();

                // Assert
                TestHelper.AssertLogMessages(call, messages =>
                {
                    string[] msgs = messages.ToArray();
                    Assert.AreEqual(7, msgs.Length);

                    Assert.AreEqual($"Hydraulische randvoorwaarden berekenen voor locatie '{duneLocation.Name}' is gestart.", msgs[0]);
                    CalculationServiceTestHelper.AssertValidationStartMessage(msgs[1]);
                    CalculationServiceTestHelper.AssertValidationEndMessage(msgs[2]);
                    CalculationServiceTestHelper.AssertCalculationStartMessage(msgs[3]);
                    Assert.AreEqual($"Hydraulische randvoorwaarden berekening voor locatie '{duneLocation.Name}' is niet geconvergeerd.", msgs[4]);
                    StringAssert.StartsWith("Hydraulische randvoorwaarden berekening is uitgevoerd op de tijdelijke locatie", msgs[5]);
                    CalculationServiceTestHelper.AssertCalculationEndMessage(msgs[6]);
                });

                Assert.AreEqual(CalculationConvergence.CalculatedNotConverged, duneLocationCalculation.Output.CalculationConvergence);
            }

            mockRepository.VerifyAll();
        }

        [Test]
        [TestCaseSource(typeof(HydraRingCalculatorTestCaseProvider), nameof(HydraRingCalculatorTestCaseProvider.GetCalculatorFailingConditions), new object[]
        {
            nameof(Run_ErrorInCalculation_PerformValidationAndCalculationAndError)
        })]
        public void Run_ErrorInCalculation_PerformValidationAndCalculationAndError(bool endInFailure, string lastErrorFileContent)
        {
            // Setup
            var duneLocationCalculation = new DuneLocationCalculation(new TestDuneLocation());

            var calculator = new TestDunesBoundaryConditionsCalculator
            {
                EndInFailure = endInFailure,
                LastErrorFileContent = lastErrorFileContent
            };

            var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
            calculatorFactory.Expect(cf => cf.CreateDunesBoundaryConditionsCalculator(testDataPath, validPreprocessorDirectory)).Return(calculator);
            mockRepository.ReplayAll();

            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
                                                               validFilePath,
                                                               validPreprocessorDirectory,
                                                               0.5);

            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
            {
                // Call
                activity.Run();

                // Assert
                Assert.AreEqual(ActivityState.Failed, activity.State);
            }

            mockRepository.VerifyAll();
        }

        [Test]
        [TestCase(ActivityState.Executed)]
        [TestCase(ActivityState.Failed)]
        [TestCase(ActivityState.Canceled)]
        [TestCase(ActivityState.Skipped)]
        public void Finish_ActivityWithSpecificState_NotifyDuneLocationCalculation(ActivityState state)
        {
            // Setup
            var duneLocation = new TestDuneLocation();
            var duneLocationCalculation = new DuneLocationCalculation(duneLocation);

            var calculationObserver = mockRepository.StrictMock<IObserver>();
            calculationObserver.Expect(o => o.UpdateObserver());
            duneLocationCalculation.Attach(calculationObserver);
            mockRepository.ReplayAll();

            var activity = new DuneLocationCalculationActivityWithState(duneLocationCalculation,
                                                                        validFilePath,
                                                                        validPreprocessorDirectory,
                                                                        1.0,
                                                                        state);

            // Call
            activity.Finish();

            // Assert
            mockRepository.VerifyAll();
        }

        private class DuneLocationCalculationActivityWithState : DuneLocationCalculationActivity
        {
            public DuneLocationCalculationActivityWithState(DuneLocationCalculation duneLocationCalculation,
                                                            string hydraulicBoundaryDatabaseFilePath,
                                                            string preprocessorDirectory,
                                                            double norm,
                                                            ActivityState state)
                : base(duneLocationCalculation,
                       hydraulicBoundaryDatabaseFilePath,
                       preprocessorDirectory,
                       norm)
            {
                State = state;
            }
        }
    }
}