// This file (WarFoundryXmlRaceFactoryTest.cs) is a part of the IBBoard.WarFoundry.API.Tests project and is copyright 2009 IBBoard
// 
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.

using System;
using System.Collections.Generic;
using System.IO;
using System.Xml.Schema;
using IBBoard.IO;
using IBBoard.WarFoundry.API.Objects;
using NUnit.Framework;
using NUnit.Framework.SyntaxHelpers;
using IBBoard.WarFoundry.API.Objects.Requirement;
using IBBoard.WarFoundry.API.Factories.Requirement;

namespace IBBoard.WarFoundry.API.Factories.Xml
{
	//It would be better to explicitly check that some of these errors are certain types of schema validation error, but Mono and .Net have
	//different exception messages for the same text and just have one class for all schema exceptions of all types.
	//We can't even check line numbers because Mono embeds them in the text and the actual line number is the end of the file.
	[TestFixture()]
	public class WarFoundryXmlRaceFactoryTest
	{
		[SetUp()]
		public void RegisterRequirementHandler()
		{
			WarFoundryLoader.RegisterRequirementFactory(new UnitRequiresAtLeastNUnitsRequirementFactory());
		}

		[TearDown()]
		public void AfterTestCleanup()
		{
			WarFoundryLoader.SetDefault(null);
		}
		
		[Test()]
		public void TestCompleteLoadingOnRaceWithMissingAbilityIdErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/non-existant-ability.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDuplicateAbilityIdErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/duplicate-ability.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithAbilityLoadsData()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/existing-ability.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			Ability ability = race.GetAbility("leaderOfMen");
			Assert.That(ability.Name, Is.EqualTo("Leader of Men"));
			Assert.That(ability.Description, Is.EqualTo("All men will follow the character and can use his leadership"));
			Assert.That(unitType.GetRequiredAbilities(), Has.Member(ability));			
		}
		
		[Test()]
		public void TestCompleteLoadingOnRaceWithIncorrectMemberTypeIDErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/non-existant-member-type.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDuplicateMemberTypeIDErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/duplicate-member-type.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithMemberTypeLoadsData()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/existing-member-type.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitMemberType memberType = race.GetUnitMemberType("General");
			Assert.That(memberType.Name, Is.EqualTo("General"));
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithIncorrectEquipmentSlotErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/single-unit-with-invalid-equipment-slot-reference.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDuplicateEquipmentSlotErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/single-unit-with-duplicate-equipment-slot.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithCorrectEquipmentSlotLoads()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/single-unit-with-valid-equipment-slot-reference.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			UnitEquipmentItem unitEquipmentItem = unitType.GetEquipmentItem("Empire1equip1");
			Assert.That(unitEquipmentItem.SlotName, Is.EqualTo("slot1"));
		}
		
		[Test()]
		public void TestCompleteLoadingOnRaceWithNoEquipmentSlotLimitErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/single-unit-with-no-equipment-slot-limit.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithIncorrectEquipmentIDError()
		{
			TestFileValidationFailure("testdata/xml-race-factory/single-unit-with-invalid-equipment-reference.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDuplicateEquipmentIDError()
		{
			TestFileValidationFailure("testdata/xml-race-factory/duplicate-equipment-id.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithCorrectEquipmentIDLoads()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/single-unit-with-valid-equipment-reference.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.GetEquipmentItem("Empire1equip1"), Is.Not.Null);
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithIncorrectContainedUnitIDError()
		{
			TestFileValidationFailure("testdata/xml-race-factory/invalid-contained-unit-reference.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithCorrectContainedUnitIDLoadsData()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/valid-contained-unit-reference.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.ContainedUnitTypes, Has.Length(1));
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDuplicateExtraDataKeyErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/duplicate-extra-data-key.racex");
		}

		[Test()]
		public void TestCompleteLoadingOnRaceWithDifferentExtraDataKeysLoadsData()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/xml-race-factory/different-extra-data-key.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.GetExtraData("data1"), Is.EqualTo("SomeStringHere"));
		}
		
		[Test()]
		[ExpectedException(typeof(InvalidFileException), ExpectedMessage="Referenced game system, 'nonexistant-system', did not exist")]
		public void TestCompleteLoadingOnRaceWithMissingGameSystemErrors()
		{
			ICollection<IWarFoundryObject> objs = WarFoundryXmlFactory.GetFactory().CreateObjectsFromFile(new FileInfo("testdata/race-with-non-existant-game-system.race"));
			Assert.AreEqual(1, objs.Count);
			IEnumerator<IWarFoundryObject> enumerator = objs.GetEnumerator();
			enumerator.Reset();
			enumerator.MoveNext();
			Race race = (Race)enumerator.Current;
			race.EnsureFullyLoaded();
		}
		
		[Test()]
		public void TestSingleUnitArmyLoadsSuccessfully()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-race.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Assert.That(race.GetUnitType("Empire1"), Is.Not.Null);
			UnitType[] unitTypes = race.GetUnitTypes(race.GetCategory("cat1"));
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Stat[] stats = unitType.UnitStatsArrays[0];
			Assert.AreEqual(9, stats.Length);
			Assert.AreEqual("M", stats[0].ParentSlotName);
			Assert.AreEqual("4", stats[0].SlotValueString);
			Assert.AreEqual("Empire General", unitType.UnitStatsArraysWithName[0][0].SlotValueString);
		}
		
		[Test()]
		public void TestSingleUnitArmyWithMemberTypeReferenceLoadsSuccessfully()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-type-referencing-race.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Assert.That(race.GetUnitType("Empire1"), Is.Not.Null);
			UnitType[] unitTypes = race.GetUnitTypes(race.GetCategory("cat1"));
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Stat[] stats = unitType.UnitStatsArrays[0];
			Assert.AreEqual(9, stats.Length);
			Assert.AreEqual("M", stats[0].ParentSlotName);
			Assert.AreEqual("4", stats[0].SlotValueString);
			Assert.AreEqual("General", unitType.UnitStatsArraysWithName[0][0].SlotValueString);
		}
		
		[Test()]
		public void TestSingleUnitArmyWithMultipleMemberTypeReferencesLoadsSuccessfully()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-multi-type-referencing-race.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Assert.That(race.GetUnitType("Empire1"), Is.Not.Null);
			UnitType[] unitTypes = race.GetUnitTypes(race.GetCategory("cat1"));
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Stat[][] stats = unitType.UnitStatsArrays;
			Assert.AreEqual(2, stats.Length);
			Assert.AreEqual("M", stats[0][0].ParentSlotName);
			Assert.AreEqual("4", stats[0][0].SlotValueString);
			Assert.AreEqual("General", unitType.UnitStatsArraysWithName[0][0].SlotValueString);
			Assert.AreEqual("M", stats[1][0].ParentSlotName);
			Assert.AreEqual("8", stats[1][0].SlotValueString);
			Assert.AreEqual("Warhorse", unitType.UnitStatsArraysWithName[1][0].SlotValueString);
		}
		
		[Test()]
		public void TestSingleUnitArmyWithMultipleMemberTypeReferencesAndOverrideLoadsSuccessfully()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-multi-type-referencing-race-with-override.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Assert.That(race.GetUnitType("Empire1"), Is.Not.Null);
			UnitType[] unitTypes = race.GetUnitTypes(race.GetCategory("cat1"));
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Stat[][] allStats = unitType.UnitStatsArrays;
			Stat[] stats = allStats[0];
			Assert.AreEqual(1, allStats.Length);
			Assert.AreEqual(9, stats.Length);
			Assert.AreEqual("M", stats[0].ParentSlotName);
			Assert.AreEqual("4", stats[0].SlotValueString);
			Assert.AreEqual("Empire General", unitType.UnitStatsArraysWithName[0][0].SlotValueString);
		}
		
		[Test()]
		public void TestSingleUnitArmyWithNoStatsReturnsUnitWithBlankStats()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-no-stats-race.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Assert.That(race.GetUnitType("Empire1"), Is.Not.Null);
			UnitType[] unitTypes = race.GetUnitTypes(race.GetCategory("cat1"));
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Stat[] stats = unitType.UnitStatsArrays[0];
			Assert.That(stats.Length == race.GameSystem.StandardSystemStats.SlotCount);
			
			foreach (Stat stat in stats)
			{
				Assert.AreEqual("", stat.SlotValueString);
			}
			
			Assert.AreEqual("Empire General", unitType.UnitStatsArraysWithName[0][0].SlotValueString);
		}

		[Test()]
		public void TestSingleUnitArmyWithNoCategoriesUsesMainCategory()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-no-category.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Category category = race.GetCategory("cat1");
			UnitType[] unitTypes = race.GetUnitTypes(category);
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Assert.That(unitType.MainCategory, Is.EqualTo(category));
			Assert.That(unitType.Categories.Length, Is.EqualTo(1));
			Assert.That(unitType.Categories, Has.Member(category));
		}

		[Test()]
		public void TestSingleUnitArmyWithOneCategoryAndSameMainCategoryHasOneCategory()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-one-category-same-main-category.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Category category = race.GetCategory("cat1");
			UnitType[] unitTypes = race.GetUnitTypes(category);
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Assert.That(unitType.MainCategory, Is.EqualTo(category));
			Assert.That(unitType.Categories.Length, Is.EqualTo(1));
			Assert.That(unitType.Categories, Has.Member(category));
		}

		[Test()]
		public void TestSingleUnitArmyWithOneCategoryAndDifferentMainCategoryHasTwoCategories()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-one-category-different-main-category.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			Category category = race.GetCategory("cat1");
			UnitType[] unitTypes = race.GetUnitTypes(category);
			Assert.AreEqual(1, unitTypes.Length);
			UnitType unitType = unitTypes[0];
			Assert.That(unitType.MainCategory, Is.EqualTo(category));
			Assert.That(unitType.Categories.Length, Is.EqualTo(2));
			Assert.That(unitType.Categories, Has.Member(category));
			Assert.That(unitType.Categories, Has.Member(race.GetCategory("cat2")));
		}

		[Test()]
		public void TestSingleUnitArmyWithMultipleCategoriesIsInEachCategory()
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo("testdata/single-unit-two-categories.racex");
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.Categories.Length, Is.EqualTo(2));
			Category cat1 = race.GetCategory("cat1");
			Category cat2 = race.GetCategory("cat2");
			Assert.That(unitType.MainCategory, Is.EqualTo(cat1));
			Assert.That(unitType.Categories, Has.Member(cat1));
			Assert.That(unitType.Categories, Has.Member(cat2));
			Assert.That(race.GetUnitTypes(cat1), Is.All.EqualTo(unitType));
			UnitType[] unitTypesCat2 = race.GetUnitTypes(cat2);
			Assert.That(unitTypesCat2, Has.Length(1));
			Assert.That(unitTypesCat2, Is.All.EqualTo(unitType));
		}

		[Test()]
		public void TestValidCategoriesLoadsCorrectly()
		{
			SetDefaultGameSystem();
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), new FileInfo("testdata/xml-race-factory/valid-categories.racex"));
			Assert.That(race.Categories, Has.Length(5));
		}

		[Test()]
		public void TestDuplicateCategoryIDErrors()
		{
			TestFileValidationFailure("testdata/xml-race-factory/duplicate-category-ids.racex");
		}

		[Test()]
		public void TestExtendedRequirementsPassValidation()
		{
			SetDefaultGameSystem();
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), new FileInfo("testdata/xml-race-factory/extended-requirements.racex"));
			Assert.That(race.Categories, Has.Length(5));
		}

		[Test()]
		public void TestLoadingSimpleRequirement()
		{
			SetDefaultGameSystem();
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), new FileInfo("testdata/xml-race-factory/simple-requirement.racex"));
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.GetRequirements(), Has.Length(1));
		}

		[Test()]
		public void TestLoadingRequirementType()
		{
			SetDefaultGameSystem();
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), new FileInfo("testdata/xml-race-factory/simple-requirement.racex"));
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.GetRequirements()[0], Is.InstanceOfType(typeof(UnitRequiresAtLeastNUnitsRequirement)));
		}

		[Test]
		public void TestCyclicReferenceDoesNotCrash()
		{
			SetDefaultGameSystem();
			Race race = SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), new FileInfo("testdata/xml-race-factory/cyclic.racex"));
			UnitType unitType = race.GetUnitType("Empire1");
			Assert.That(unitType.GetRequirements()[0], Is.InstanceOfType(typeof(UnitRequiresNoMoreThanNOfUnitTypeRequirement)));
		}

		private void TestFileValidationFailure(string filePath)
		{
			SetDefaultGameSystem();
			FileInfo raceFile = new FileInfo(filePath);
			
			try
			{
				SingleXmlObjectLoader.LoadRaceFromXML(WarFoundryXmlFactory.GetFactory(), raceFile);
				Assert.Fail("Excepted exception not thrown");
			}
			catch (InvalidFileException ex)
			{
				Console.WriteLine(ex.Message);
				Exception innerException = ex.InnerException;
				Assert.That(innerException, Is.InstanceOfType(typeof(XmlSchemaValidationException)));
			}
		}
		
		private static void SetDefaultGameSystem()
		{
			SetDefaultGameSystem(new FileInfo("testdata/default.systemx"));
		}
		
		public static void SetDefaultGameSystem(FileInfo systemFile)
		{
			GameSystem system = SingleXmlObjectLoader.LoadGameSystemFromXML(WarFoundryXmlFactory.GetFactory(), systemFile);
			FixedGameSystemWarFoundryLoader fixedLoader = new FixedGameSystemWarFoundryLoader(system);
			WarFoundryLoader.SetDefault(fixedLoader);
		}
	}
}