// Copyright (C) Stichting Deltares and State of the Netherlands 2025. All rights reserved.
//
// This file is part of Riskeer.
//
// Riskeer is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser 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.Reflection;
using Core.Common.Util.Reflection;
using NUnit.Framework;

namespace Core.Common.Util.Test.Reflection
{
    [TestFixture]
    public class AssemblyUtilsTest
    {
        [Test]
        public void GetAssemblyInfo_AssemblyNull_ThrowArgumentNullException()
        {
            // Call
            void Call() => AssemblyUtils.GetAssemblyInfo(null);

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

        [Test]
        public void GetAssemblyInfo_LocationIsEmpty_ReturnEmptyAssemblyInfo()
        {
            // Setup
            var assemblyWithoutLocation = new MockedAssemblyWithoutLocation();

            // Call
            AssemblyUtils.AssemblyInfo assemblyInfo = AssemblyUtils.GetAssemblyInfo(assemblyWithoutLocation);

            // Assert
            Assert.IsNull(assemblyInfo.Company);
            Assert.IsNull(assemblyInfo.Copyright);
            Assert.IsNull(assemblyInfo.Description);
            Assert.IsNull(assemblyInfo.Product);
            Assert.IsNull(assemblyInfo.Title);
            Assert.IsNull(assemblyInfo.Version);
        }

        [Test]
        public void GetAssemblyInfo_ForThisTestProjectAssembly_ReturnAssemblyInfoWithExpectedValues()
        {
            // Setup
            var assembly = Assembly.GetAssembly(GetType());

            // Call
            AssemblyUtils.AssemblyInfo assemblyInfo = AssemblyUtils.GetAssemblyInfo(assembly);

            // Assert
            Assert.AreEqual("Stichting Deltares and State of the Netherlands", assemblyInfo.Company);
            Assert.AreEqual("Copyright © Stichting Deltares and State of the Netherlands 2025", assemblyInfo.Copyright);
            Assert.AreEqual("Core.Common.Util.Test", assemblyInfo.Product);
            Assert.AreEqual("Core.Common.Util.Test", assemblyInfo.Title);
            StringAssert.StartsWith("25.1.1.1", assemblyInfo.Version);
        }

        [Test]
        public void GetExecutingAssemblyInfo_ReturnAssemblyInfoForAssemblyUtilsAssembly()
        {
            // Setup
            var assembly = Assembly.GetAssembly(typeof(AssemblyUtils));
            AssemblyUtils.AssemblyInfo assemblyInfo = AssemblyUtils.GetAssemblyInfo(assembly);

            // Call
            AssemblyUtils.AssemblyInfo executingAssemblyInfo = AssemblyUtils.GetExecutingAssemblyInfo();

            // Assert
            Assert.AreEqual(assemblyInfo.Company, executingAssemblyInfo.Company);
            Assert.AreEqual(assemblyInfo.Copyright, executingAssemblyInfo.Copyright);
            Assert.AreEqual(assemblyInfo.Description, executingAssemblyInfo.Description);
            Assert.AreEqual(assemblyInfo.Product, executingAssemblyInfo.Product);
            Assert.AreEqual(assemblyInfo.Title, executingAssemblyInfo.Title);
            Assert.AreEqual(assemblyInfo.Version, executingAssemblyInfo.Version);
        }

        [Test]
        public void GetTypeByName_ForThisTestSuite_ReturnTypeOfThisTestSuite()
        {
            // Setup
            string typeName = GetType().FullName;

            // Call
            Type returnedType = AssemblyUtils.GetTypeByName(typeName);

            // Assert
            Assert.AreEqual(GetType(), returnedType);
        }

        [Test]
        public void GetTypeByName_NameNull_ThrowArgumentNullException()
        {
            // Call
            void Call() => AssemblyUtils.GetTypeByName(null);

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

        [Test]
        public void GetTypeByName_ForNonExistingClass_ReturnNull()
        {
            // Call
            Type returnedType = AssemblyUtils.GetTypeByName("I.Dont.Exist");

            // Assert
            Assert.IsNull(returnedType);
        }

        [Test]
        public void GetAssemblyResourceStream_AssemblyNull_ThrowArgumentNullException()
        {
            // Call
            void Call() => AssemblyUtils.GetAssemblyResourceStream(null, "nice.txt");

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

        [Test]
        public void GetAssemblyResourceStream_ForEmbeddedResource_ReturnStream()
        {
            // Call
            Stream stream = AssemblyUtils.GetAssemblyResourceStream(GetType().Assembly, "testFile.txt");

            // Assert
            using (var reader = new StreamReader(stream))
            {
                Assert.AreEqual("test test 1 2 3", reader.ReadToEnd());
            }
        }

        [Test]
        public void GetAssemblyResourceStream_ForNonExistingEmbeddedResource_ThrowArgumentException()
        {
            // Call
            void Call() => AssemblyUtils.GetAssemblyResourceStream(GetType().Assembly, "I do not exist.txt");

            // Assert
            var exception = Assert.Throws<ArgumentException>(Call);
            Assert.IsInstanceOf<InvalidOperationException>(exception.InnerException);
        }

        private class MockedAssemblyWithoutLocation : Assembly
        {
            public override string Location => "";
        }
    }
}