using System;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
using ShareeBike.Model;
using ShareeBike.ViewModel.WhatsNew;
using Xamarin.Essentials;

namespace SharedBusinessLogic.Tests.Fixtures.ObjectTests
{
	[TestFixture]
	public class TestWhatsNew
	{
		[Test]
		public void TestIsMessagesConsistent()
		{
			foreach (AppFlavor app in Enum.GetValues(typeof(AppFlavor)))
			{
				foreach (DevicePlatform platform in new List<DevicePlatform> { DevicePlatform.iOS, DevicePlatform.Android })
					Assert.That(
						() => new WhatsNew(
							WhatsNew.AllFlavorsAndPlatformMessages[WhatsNew.AllFlavorsAndPlatformMessages.Count - 1].Version,
							WhatsNew.AllFlavorsAndPlatformMessages[0].Version,
							WhatsNew.AllFlavorsAndPlatformMessages[0].Version,
							app,
							platform).WhatsNewText,
					   Throws.Nothing,
					   "Invalid entries detected.");
			}
		}

		[Test]
		public void TestIsShowRequired_CleanInstall()
		{
			Assert.That(new WhatsNew(
				new Version(2, 4), /* Current version */
				null, // last version
				null, /* Whats new was never shown */
				AppFlavor.ShareeBike,
				DevicePlatform.Android).IsShowRequired, Is.False);
		}

		/// <summary>
		/// This test verified old implementation which worked with the different versions to determine whenther whats new has to be shown or not.
		/// Test updated to new implementation (based on filtering of AllFlavorsAndPlatformMessages)
		/// </summary>
		[Test]
		public void TestIsShowRequired_Update_VersionWhichSupporsWhatsNew()
		{
			Assert.That(
				new WhatsNew(
					new Version(3, 0, 335), /* Current version */
					new Version(3, 0, 333), /* last version */
					new Version(3, 0, 111),  /* Version when whats new was shown */
					AppFlavor.ShareeBike,
					DevicePlatform.Android).IsShowRequired, Is.True,
				"If whats new was last shown for version 3.0.111 and current version is 2.0.335 info must be shown");
		}


		/// <summary>
		/// This test verified old implementation which worked with the different versions to determine whenther whats new has to be shown or not.
		/// Test updated to new implementation (based on filtering of AllFlavorsAndPlatformMessages)
		/// </summary>
		[Test]
		public void TestIsShowRequired_Update_VersionWithoutWhatsNew()
		{
			Assert.That(
				new WhatsNew(
					new Version(3, 0, 335), /* Current version */
					new Version(3, 0, 333), /* last version */
					null,  /* Whats new was never shown */
					AppFlavor.ShareeBike,
					DevicePlatform.Android).IsShowRequired, Is.True,
				"If whats new was never shown but last version was 3.0.333 (not clean install) info must be shown");
		}

		[Test]
		public void TestIsShowRequired_False()
		{
			Assert.That(
				new WhatsNew(new Version(2, 5), new Version(2, 5), new Version(2, 5), AppFlavor.ShareeBike, DevicePlatform.Android).IsShowRequired, Is.False,
				"Whats new must never be presented twice.");
		}

		[Test]
		public void TestIsShowRequired_False_Errors()
		{
			Assert.That(new WhatsNew(null, new Version(2, 6), new Version(2, 5), AppFlavor.ShareeBike, DevicePlatform.Android).IsShowRequired, Is.False);
			Assert.That(new WhatsNew(new Version(2, 6), null, new Version(2, 5), AppFlavor.ShareeBike, DevicePlatform.Android).IsShowRequired, Is.False);
			Assert.That(new WhatsNew(null, null, new Version(2, 5), AppFlavor.ShareeBike, DevicePlatform.Android).IsShowRequired, Is.False);
		}

		[Test]
		public void TestWhatsNewText_MajorUpdate()
		{
			Assert.That(
				WhatsNewViewModel.GetWhatNextHtmlText(new WhatsNew(new Version(3, 0, 120), new Version(3, 0, 0, 114), new Version(3, 0, 0, 114), AppFlavor.ShareeBike, DevicePlatform.Android).WhatsNewText), Is.EqualTo("<p><b>3.0.0.115</b><br/>Benutzeroberfläche verbessert.\r\n\r\n" +
				"</p><p><b>3.0.120</b><br/>Verbesserung: Keine Fehler mehr beim schnellen Tippen.\r\nOfflineanzeige Stationen/ Räderinfo.\r\n\r\n</p>"),
				"Current version is 30.0.120, last whats new was shown in version 3.0.0.114: Two changes to be notified about.");
		}

		[Test]
		public void TestWhatsNewText_MinorUpdate()
		{
			Assert.That(
				WhatsNewViewModel.GetWhatNextHtmlText(new WhatsNew(new Version(3, 0, 120), new Version(3, 0, 0, 115), new Version(3, 0, 0, 115), AppFlavor.ShareeBike, DevicePlatform.Android).WhatsNewText), Is.EqualTo("<p><b>3.0.120</b><br/>Verbesserung: Keine Fehler mehr beim schnellen Tippen.\r\nOfflineanzeige Stationen/ Räderinfo.\r\n\r\n</p>"));
		}

		[Test]
		public void TestWhatsNewGetFileredMessages_GeneralMessage()
		{
			Assert.That(
				 new WhatsNew(new Version(3, 0, 335), new Version(3, 0), new Version(3, 0), AppFlavor.ShareeBike, DevicePlatform.iOS, new WhatsNewMessages
					{
						{
							new Version(3, 0, 0, 115),
							"Benutzeroberfläche verbessert.\r\n\r\n"
						}
					}).WhatsNewText.Count(),
					Is.EqualTo(1));
		}

		[Test]
		public void TestWhatsNewGetFileredMessages_LastenradBayernOnly_Included()
		{
			Assert.That(
				 new WhatsNew(new Version(3, 0, 335), new Version(3, 0), new Version(3, 0), AppFlavor.LastenradBayern, DevicePlatform.iOS, new WhatsNewMessages
					{
						{
							new Version(3, 0, 0, 115),
							"Benutzeroberfläche verbessert.\r\n\r\n",
							new List<AppFlavor> {AppFlavor.LastenradBayern}
						}
					}).WhatsNewText.Count(),
					Is.EqualTo(1));
		}

		[Test]
		public void TestWhatsNewGetFileredMessages_LastenradBayernOnly_Excluded()
		{
			Assert.That(
				 new WhatsNew(new Version(3, 0, 335), new Version(3, 0), new Version(3, 0), AppFlavor.ShareeBike, DevicePlatform.iOS, new WhatsNewMessages
					{
						{
							new Version(3, 0, 0, 115),
							"Benutzeroberfläche verbessert.\r\n\r\n",
							new List<AppFlavor> {AppFlavor.LastenradBayern}
						}
					}).WhatsNewText.Count(),
					Is.EqualTo(0));
		}

		[Test]
		public void TestWhatsNewGetFileredMessages_iOSOnly_Included()
		{
			Assert.That(
				 new WhatsNew(new Version(3, 0, 335), new Version(3, 0), new Version(3, 0), AppFlavor.ShareeBike, DevicePlatform.iOS, new WhatsNewMessages
					{
						{
							new Version(3, 0, 0, 115),
							"Benutzeroberfläche verbessert.\r\n\r\n",
							null,
							new List<DevicePlatform> {DevicePlatform.iOS}
						}
					}).WhatsNewText.Count(),
					Is.EqualTo(1));
		}

		[Test]
		public void TestWhatsNewGetFileredMessages_iOSOnly_Exclued()
		{
			Assert.That(
				 new WhatsNew(new Version(3, 0, 335), new Version(3, 0), new Version(3, 0), AppFlavor.ShareeBike, DevicePlatform.Android, new WhatsNewMessages
					{
						{
							new Version(3, 0, 0, 115),
							"Benutzeroberfläche verbessert.\r\n\r\n",
							null,
							new List<DevicePlatform> {DevicePlatform.iOS}
						}
					}).WhatsNewText.Count(),
					Is.EqualTo(0));
		}
	}
}