// Copyright (C) Stichting Deltares 2016. 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 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 Core.Common.Gui.Settings;
using Core.Common.Utils.Reflection;
using NUnit.Framework;

namespace Core.Common.Gui.Test.Settings
{
    [TestFixture]
    public class SettingsHelperTest
    {
        [Test]
        public void Instance_CalledTwice_ReturnsSameInstance()
        {
            // Setup
            ISettingsHelper expected = SettingsHelper.Instance;

            // Call
            ISettingsHelper actual = SettingsHelper.Instance;

            // Assert
            Assert.AreSame(expected, actual);
        }

        [Test]
        public void ApplicationName_ReturnsProductNameOfExecutingAssembly()
        {
            // Call
            var settings = SettingsHelper.Instance.ApplicationName;

            // Assert
            Assert.AreEqual(AssemblyUtils.GetExecutingAssemblyInfo().Product, settings);
        }

        [Test]
        public void ApplicationVersion_ReturnsVersionOfExecutingAssembly()
        {
            // Call
            var settings = SettingsHelper.Instance.ApplicationVersion;

            // Assert
            Assert.AreEqual(AssemblyUtils.GetExecutingAssemblyInfo().Version, settings);
        }

        [Test]
        public void GetApplicationLocalUserSettingsDirectory_WithoutSubFolder_ReturnsApplicationLocalUserSettingsDirectory()
        {
            // Call
            var pathFromSettings = SettingsHelper.Instance.GetApplicationLocalUserSettingsDirectory();

            // Assert
            var localSettingsDirectoryPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
            Assert.AreEqual(localSettingsDirectoryPath, pathFromSettings);
        }

        [Test]
        public void GetApplicationLocalUserSettingsDirectoryWithExpectedDirectory_WithPostfix_ReturnsRootFolderWithPostfix()
        {
            // Setup
            string subFolder = Path.GetRandomFileName();
            string subSubFolder = Path.GetRandomFileName();

            // Call
            string directory = SettingsHelper.Instance.GetApplicationLocalUserSettingsDirectory(subFolder, subSubFolder);

            // Assert
            string userSettingsDirectory = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);

            string testDataPath = Path.Combine(userSettingsDirectory, subFolder, subSubFolder);
            Assert.AreEqual(testDataPath, directory);

            string testDataPathParent = Path.Combine(userSettingsDirectory, subFolder);
            Assert.IsTrue(Directory.Exists(testDataPathParent));
            Assert.IsTrue(Directory.Exists(testDataPath));
            Directory.Delete(testDataPathParent, true);
        }

        [Test]
        public void GetApplicationLocalUserSettingsDirectory_ValidPathFileExistsDirectoryNotWritable_ThrowsIOException()
        {
            // Setup
            const string workingDirectory = "folderToCr*eate";

            // Call
            TestDelegate test = () => SettingsHelper.Instance.GetApplicationLocalUserSettingsDirectory(workingDirectory);

            // Assert
            string dataPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), workingDirectory);
            var expectedMessage = $"De map '{dataPath}' kan niet aangemaakt worden.";
            var message = Assert.Throws<IOException>(test).Message;
            Assert.AreEqual(expectedMessage, message);
        }
    }
}