// Copyright (C) Stichting Deltares 2025. 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 Deltares.Dam.Data.Registry;
using Microsoft.Win32;
using NUnit.Framework;

namespace Deltares.Dam.Data.Tests.Registry
{
    /// <summary>
    /// Test for reading values from the Windows registry
    /// Note: These tests actually write to the registry under HKEY_CURRENT_USER.
    /// Testing KEY_LOCAL_MACHINE would require elevated permissions and is therefore not included.
    /// </summary>
    [TestFixture]
    public class RegistryReaderTests
    {
        private const string keyPath = @"SOFTWARE\\DeltaresDamTest";
        private const string keyName = "TestValue";
        private const string expectedValue = "TestContent";

        [SetUp]
        public void SetUp()
        {
            using RegistryKey key = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(keyPath);
            key!.SetValue(keyName, expectedValue);
        }

        [TearDown]
        public void TearDown()
        {
            Microsoft.Win32.Registry.CurrentUser.DeleteSubKey(keyPath, false);
        }

        [Test]
        public void GetRegistryValue_ReturnsValue_WhenKeyAndValueExist()
        {
            string actualValue = RegistryReader.GetRegistryValueFromCurrentUser(keyPath, keyName);
            Assert.That(actualValue, Is.EqualTo(expectedValue));
        }

        [Test]
        public void GetRegistryValue_ReturnsEmpty_WhenKeyDoesNotExist()
        {
            string actualValue = RegistryReader.GetRegistryValueFromCurrentUser("SOFTWARE\\NonExistentKey", keyName);
            Assert.That(actualValue, Is.EqualTo(string.Empty));
        }

        [Test]
        public void GetRegistryValue_ReturnsEmpty_WhenValueDoesNotExist()
        {
            string actualValue = RegistryReader.GetRegistryValueFromCurrentUser(keyPath, "NonExistentValue");
            Assert.That(actualValue, Is.EqualTo(string.Empty));
        }

    }
}