using BumpCombat.Constants;
using BumpCombat.Combat;
using BumpCombat.Core;
using BumpCombat.Enemies;
using BumpCombat.Player;
using BumpCombat.Progression;
using BumpCombat.Spawning;
using NUnit.Framework;
using System.Reflection;
using UnityEditor;
using UnityEngine;

namespace BumpCombat.Tests
{
    public sealed class GameplayConstantsConsumptionTests
    {
        private static readonly BindingFlags NonPublicInstance =
            BindingFlags.Instance | BindingFlags.NonPublic;

        [Test]
        public void ExperienceAndMissionRules_ReadChangedLevelUpSettings()
        {
            LevelUpConstants constants = GameplayConstants.Current.LevelUp;
            int originalBaseExperience = constants.BaseExperienceToNextLevel;
            int originalAdditionalExperience = constants.AdditionalExperiencePerLevel;
            float originalRampageWindow = constants.RampageWindowSeconds;
            MissionTuning[] originalMissions = constants.Missions;
            try
            {
                constants.BaseExperienceToNextLevel = 19;
                constants.AdditionalExperiencePerLevel = 8;
                MissionTuning[] changedMissions =
                    (MissionTuning[])originalMissions.Clone();
                changedMissions[0].Target = 7;
                changedMissions[0].ConditionFormat = "Defeat {0} units";
                changedMissions[0].ExperienceReward = 23;
                changedMissions[10].Target = 9;
                changedMissions[10].ConditionFormat = "Within {1}s defeat {0}";
                constants.Missions = changedMissions;
                constants.RampageWindowSeconds = 4f;

                Assert.That(
                    ExperienceSystem.RequiredExperienceForLevel(3),
                    Is.EqualTo(35));
                RunMissionDefinition mission = RunMissionTracker.GetDefinition(0);
                Assert.That(mission.Target, Is.EqualTo(7));
                Assert.That(mission.ExperienceReward, Is.EqualTo(23));
                Assert.That(mission.Condition, Is.EqualTo("Defeat 7 units"));
                Assert.That(RunMissionTracker.RampageKillTarget, Is.EqualTo(9));
                Assert.That(
                    RunMissionTracker.GetDefinition(10).Condition,
                    Is.EqualTo("Within 4s defeat 9"));
            }
            finally
            {
                constants.BaseExperienceToNextLevel = originalBaseExperience;
                constants.AdditionalExperiencePerLevel = originalAdditionalExperience;
                constants.Missions = originalMissions;
                constants.RampageWindowSeconds = originalRampageWindow;
            }
        }

        [Test]
        public void SpawnDensityRules_ReadChangedRunSettings()
        {
            RunConstants constants = GameplayConstants.Current.Run;
            SpawnDensityPhase[] originalPhases = constants.SpawnDensity;
            try
            {
                SpawnDensityPhase[] changedPhases =
                    (SpawnDensityPhase[])originalPhases.Clone();
                changedPhases[0] = new SpawnDensityPhase(60f, 9, 8);
                constants.SpawnDensity = changedPhases;

                Assert.That(SpawnDirector.TargetCrowdAliveCountAt(0f), Is.EqualTo(9));
                Assert.That(SpawnDirector.TargetNormalAliveCountAt(0f), Is.EqualTo(8));
            }
            finally
            {
                constants.SpawnDensity = originalPhases;
            }
        }

        [Test]
        public void PlayerAndBumpRules_ReadChangedSettings()
        {
            PlayerConstants player = GameplayConstants.Current.Player;
            CombatConstants combat = GameplayConstants.Current.Combat;
            float originalSpeed = player.BaseMoveSpeed;
            float originalPositionMultiplier = combat.PositionDamageMultiplier;
            GameObject owner = new("Gameplay Constants Player Consumer Test");
            try
            {
                PlayerStats stats = owner.AddComponent<PlayerStats>();
                player.BaseMoveSpeed = 6.25f;
                combat.PositionDamageMultiplier = 1.7f;
                Assert.That(stats.MoveSpeed, Is.EqualTo(6.25f));
                Assert.That(
                    BumpCombatMath.ApplySideMultiplier(10f, HitSide.Side),
                    Is.EqualTo(17f).Within(0.0001f));
            }
            finally
            {
                player.BaseMoveSpeed = originalSpeed;
                combat.PositionDamageMultiplier = originalPositionMultiplier;
                Object.DestroyImmediate(owner);
            }
        }

        [Test]
        public void ArtifactGaugeRule_ReadsChangedArtifactSettings()
        {
            ArtifactConstants artifacts = GameplayConstants.Current.Artifacts;
            float originalGaugeGain = artifacts.NormalBumpGaugeGain;
            GameObject playerObject = new("Gameplay Constants Artifact Consumer Test");
            try
            {
                playerObject.AddComponent<PlayerStats>();
                playerObject.AddComponent<Rigidbody2D>();
                ActiveArtifactController controller =
                    playerObject.AddComponent<ActiveArtifactController>();
                InvokePrivate(controller, "Awake");
                artifacts.NormalBumpGaugeGain = 9f;
                controller.AddNormalHitCharge();
                Assert.That(controller.CurrentGauge, Is.EqualTo(9f));
            }
            finally
            {
                artifacts.NormalBumpGaugeGain = originalGaugeGain;
                Object.DestroyImmediate(playerObject);
            }
        }

        [Test]
        public void ImportedCatalog_ReferencesEveryCategoryAndPreservesRunArrays()
        {
            GameplayConstants catalog = AssetDatabase.LoadAssetAtPath<GameplayConstants>(
                "Assets/_Project/Constants/Resources/GameplayConstants.asset");
            Assert.That(catalog, Is.Not.Null);
            Assert.That(catalog.Player, Is.SameAs(AssetDatabase.LoadAssetAtPath<PlayerConstants>(
                "Assets/_Project/Constants/Player/PlayerConstants.asset")));
            Assert.That(catalog.Combat, Is.SameAs(AssetDatabase.LoadAssetAtPath<CombatConstants>(
                "Assets/_Project/Constants/Combat/CombatConstants.asset")));
            Assert.That(catalog.Enemies, Is.SameAs(AssetDatabase.LoadAssetAtPath<EnemyConstants>(
                "Assets/_Project/Constants/Enemies/EnemyConstants.asset")));
            Assert.That(catalog.Items, Is.SameAs(AssetDatabase.LoadAssetAtPath<ItemConstants>(
                "Assets/_Project/Constants/Items/ItemConstants.asset")));
            Assert.That(catalog.LevelUp, Is.SameAs(AssetDatabase.LoadAssetAtPath<LevelUpConstants>(
                "Assets/_Project/Constants/LevelUp/LevelUpConstants.asset")));
            Assert.That(catalog.Artifacts, Is.SameAs(AssetDatabase.LoadAssetAtPath<ArtifactConstants>(
                "Assets/_Project/Constants/Artifacts/ArtifactConstants.asset")));
            Assert.That(catalog.Run, Is.SameAs(AssetDatabase.LoadAssetAtPath<RunConstants>(
                "Assets/_Project/Constants/Run/RunConstants.asset")));
            Assert.That(catalog.CombatFeedback, Is.SameAs(AssetDatabase.LoadAssetAtPath<CombatFeedbackSettings>(
                "Assets/_Project/Constants/Combat/CombatFeedback.asset")));
            Assert.That(catalog.Run.MidBossKinds, Is.EqualTo(new[] {
                EnemyKind.GreatswordSkeleton,
                EnemyKind.NecroGolem,
            }));
            Assert.That(catalog.Run.ProductionEliteAttacksPerSequence, Is.EqualTo(new[] { 1, 2, 3, 2 }));
            Assert.That(catalog.Run.DevelopmentEliteEventTimes, Is.EqualTo(new[] { 36f, 72f, 108f, 144f, 180f, 216f }));
            Assert.That(catalog.Run.ProductionEliteEventTimes, Is.EqualTo(new[] { 180f, 360f, 540f, 720f }));
        }

        private static void InvokePrivate(object target, string methodName)
        {
            MethodInfo method = target.GetType().GetMethod(methodName, NonPublicInstance);
            Assert.That(method, Is.Not.Null, methodName);
            method.Invoke(target, null);
        }

    }
}