// Copyright (C) Stichting Deltares 2024. All rights reserved.
// 
// This file is part of the application DAM - UI.
// 
// DAM - UI 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.Collections.Generic;
using System.IO;
using Deltares.Dam.Data;
using NUnit.Framework;

namespace Deltares.Dam.Tests
{
    [TestFixture]
    public class CsvExporterTest
    {
        const string FileName = "test.csv";

        [Test]
        public void ThrowWhenFileNameIsNull()
        {
            Assert.That(() => new CsvExporter<CsvExportData>(null, null), Throws.InstanceOf<CsvExporterException>());
        }

        [Test]
        public void ThrowWhenCalculationSubDirIsNull()
        {
            var exportData = new CsvExportData("locationName", "scenarioName");
            exportData.BaseFileName = "base";
            exportData.CalculationSubDir = "";
            Assert.That(() => exportData.GetDesignResultFile(), Throws.InstanceOf<CsvExporterException>());
        }

        [Test]
        public void ThrowWhenFileNameIsNullOrEmpty()
        {
            Assert.That(() => new CsvExporter<CsvExportData>("", null), Throws.InstanceOf<CsvExporterException>());
        }

        [Test]
        public void ThrowWhenFileNameOnlyContainsWhitespaces()
        {
            Assert.That(() => new CsvExporter<CsvExportData>(" ", null), Throws.InstanceOf<CsvExporterException>());
        }

        [Test]
        public void OverwriteExistingFileShouldWorkWithoutException()
        {
            const string writtenContent = "something";
            StreamWriter file = File.CreateText(FileName);
            file.WriteLine(writtenContent);
            file.Close();
            var exportData = new CsvExportData("locationName", "scenarioName");
            var creator = new CsvExporter<CsvExportData>(FileName, new List<CsvExportData>
            {
                exportData
            });
            creator.WriteFile();
            using (StreamReader reader = File.OpenText(FileName))
            {
                string fileContent = reader.ReadToEnd();
                Assert.That(fileContent.Contains(writtenContent), Is.False);
            }
        }

        [Test]
        public void ThrowsIndexAlreadyExistsWhenDeclaredMultipleTimes()
        {
            var creator = new CsvExporter<DataStubWithWrongMetaData>(FileName,
                                                                     new List<DataStubWithWrongMetaData>
                                                                     {
                                                                         new DataStubWithWrongMetaData()
                                                                     });
            Assert.That(() => creator.WriteFile(), Throws.InstanceOf<CsvExporterException>());
        }

        [Test]
        public void ColumnHeaderIsWrittenCorrectly()
        {
            var dataItems = new List<DataStub>
            {
                new DataStub
                {
                    ID = 1,
                    Name = "Barry",
                    Average = 95.4
                },
                new DataStub
                {
                    ID = 2,
                    Name = "Tom",
                    Average = 97.3
                },
                new DataStub
                {
                    ID = 3,
                    Name = "Remko",
                    Average = 92.2
                }
            };

            var creator = new CsvExporter<DataStub>(FileName, dataItems)
            {
                WriteHeaderInFirstLine = true
            };

            creator.WriteFile();

            using (StreamReader reader = File.OpenText(FileName))
            {
                string fileContent = reader.ReadToEnd();
                Assert.That(fileContent.Contains("ID;Naam"), Is.True);
            }
        }

        [Test]
        public void TestRemoveCarriageReturnsFromMessage()
        {
            var text = "text1.\r\ntext2.\r\n";
            CsvExportData.RemoveCarriageReturnsFromMessage(ref text);
            Assert.That(text, Is.EqualTo("text1. text2."));
        }

        [Test]
        public void TestRemoveCarriageReturnsFromResultMessage()
        {
            var csvExportData = new CsvExportData();
            csvExportData.ResultMessage = "text1.\r\ntext2.\r\n";
            string message = csvExportData.ResultMessage;
            Assert.That(message, Is.EqualTo("text1. text2."));
        }

        class DataStub
        {
            [CsvExportColumn("ID", 1)] public int ID { get; set; }

            [CsvExportColumn("Naam", 2)] public string Name { get; set; }

            [CsvExportColumn("Gemiddelde", 3)] public double Average { get; set; }
        }

        class DataStubWithWrongMetaData
        {
            [CsvExportColumn("ID", 1)] public int ID { get; set; }

            [CsvExportColumn("Naam", 1)] public string Name { get; set; }
        }
    }
}