using GeometryTD.CustomUtility;
using GeometryTD.Definition;
using NUnit.Framework;

namespace GeometryTD.Tests.EditMode
{
    public sealed class ParticipantTowerAssignResultTests
    {
        [Test]
        public void TryAddParticipantTower_Returns_Success_For_Legal_Tower()
        {
            BackpackInventoryData inventory = CreateValidInventory();

            ParticipantTowerAssignResult result = InventoryParticipantUtility.TryAddParticipantTower(inventory, 90001, 4);

            Assert.That(result, Is.Not.Null);
            Assert.That(result.IsSuccess, Is.True);
            Assert.That(result.FailureReason, Is.EqualTo(ParticipantTowerAssignFailureReason.None));
            Assert.That(result.ValidationFailureReason, Is.EqualTo(CombatParticipantTowerValidationFailureReason.None));
            Assert.That(inventory.ParticipantTowerInstanceIds.Count, Is.EqualTo(1));
            Assert.That(inventory.ParticipantTowerInstanceIds[0], Is.EqualTo(90001));
            Assert.That(inventory.Towers[0].IsParticipatingInCombat, Is.True);
        }

        [Test]
        public void TryAddParticipantTower_Returns_TowerMissing_When_Tower_Is_Not_Found()
        {
            BackpackInventoryData inventory = CreateValidInventory();

            ParticipantTowerAssignResult result = InventoryParticipantUtility.TryAddParticipantTower(inventory, 99999, 4);

            Assert.That(result.IsSuccess, Is.False);
            Assert.That(result.FailureReason, Is.EqualTo(ParticipantTowerAssignFailureReason.TowerMissing));
            Assert.That(result.ValidationFailureReason,
                Is.EqualTo(CombatParticipantTowerValidationFailureReason.TowerMissing));
            Assert.That(inventory.ParticipantTowerInstanceIds.Count, Is.EqualTo(0));
        }

        [Test]
        public void TryAddParticipantTower_Returns_InvalidTower_With_Missing_Component_Reason()
        {
            BackpackInventoryData inventory = CreateValidInventory();
            inventory.Towers[0].BaseComponentInstanceId = 33333;

            ParticipantTowerAssignResult result = InventoryParticipantUtility.TryAddParticipantTower(inventory, 90001, 4);

            Assert.That(result.IsSuccess, Is.False);
            Assert.That(result.FailureReason, Is.EqualTo(ParticipantTowerAssignFailureReason.InvalidTower));
            Assert.That(result.ValidationFailureReason,
                Is.EqualTo(CombatParticipantTowerValidationFailureReason.MissingBaseComponent));
            Assert.That(inventory.ParticipantTowerInstanceIds.Count, Is.EqualTo(0));
        }

        [Test]
        public void TryAddParticipantTower_Returns_AlreadyAssigned_Without_Duplicating_List()
        {
            BackpackInventoryData inventory = CreateValidInventory();
            inventory.ParticipantTowerInstanceIds.Add(90001);
            inventory.Towers[0].IsParticipatingInCombat = true;

            ParticipantTowerAssignResult result = InventoryParticipantUtility.TryAddParticipantTower(inventory, 90001, 4);

            Assert.That(result.IsSuccess, Is.False);
            Assert.That(result.FailureReason, Is.EqualTo(ParticipantTowerAssignFailureReason.AlreadyAssigned));
            Assert.That(result.ValidationFailureReason, Is.EqualTo(CombatParticipantTowerValidationFailureReason.None));
            Assert.That(inventory.ParticipantTowerInstanceIds.Count, Is.EqualTo(1));
        }

        [Test]
        public void TryAddParticipantTower_Returns_ParticipantAreaFull_When_MaxCount_Reached()
        {
            BackpackInventoryData inventory = CreateInventoryWithFourParticipantTowers();

            ParticipantTowerAssignResult result = InventoryParticipantUtility.TryAddParticipantTower(inventory, 90005, 4);

            Assert.That(result.IsSuccess, Is.False);
            Assert.That(result.FailureReason, Is.EqualTo(ParticipantTowerAssignFailureReason.ParticipantAreaFull));
            Assert.That(result.ValidationFailureReason, Is.EqualTo(CombatParticipantTowerValidationFailureReason.None));
            Assert.That(inventory.ParticipantTowerInstanceIds.Count, Is.EqualTo(4));
            Assert.That(inventory.Towers[4].IsParticipatingInCombat, Is.False);
        }

        private static BackpackInventoryData CreateValidInventory()
        {
            BackpackInventoryData inventory = new BackpackInventoryData();
            inventory.MuzzleComponents.Add(new MuzzleCompItemData { InstanceId = 10001, Name = "枪口" });
            inventory.BearingComponents.Add(new BearingCompItemData { InstanceId = 20001, Name = "轴承" });
            inventory.BaseComponents.Add(new BaseCompItemData { InstanceId = 30001, Name = "底座" });
            inventory.Towers.Add(new TowerItemData
            {
                InstanceId = 90001,
                Name = "合法塔",
                MuzzleComponentInstanceId = 10001,
                BearingComponentInstanceId = 20001,
                BaseComponentInstanceId = 30001,
                Stats = new TowerStatsData()
            });

            return inventory;
        }

        private static BackpackInventoryData CreateInventoryWithFourParticipantTowers()
        {
            BackpackInventoryData inventory = new BackpackInventoryData();

            for (int i = 0; i < 5; i++)
            {
                long towerId = 90001 + i;
                long muzzleId = 10001 + i;
                long bearingId = 20001 + i;
                long baseId = 30001 + i;

                inventory.MuzzleComponents.Add(new MuzzleCompItemData { InstanceId = muzzleId, Name = $"枪口-{i}" });
                inventory.BearingComponents.Add(new BearingCompItemData { InstanceId = bearingId, Name = $"轴承-{i}" });
                inventory.BaseComponents.Add(new BaseCompItemData { InstanceId = baseId, Name = $"底座-{i}" });
                inventory.Towers.Add(new TowerItemData
                {
                    InstanceId = towerId,
                    Name = $"塔-{i}",
                    MuzzleComponentInstanceId = muzzleId,
                    BearingComponentInstanceId = bearingId,
                    BaseComponentInstanceId = baseId,
                    Stats = new TowerStatsData(),
                    IsParticipatingInCombat = i < 4
                });

                if (i < 4)
                {
                    inventory.ParticipantTowerInstanceIds.Add(towerId);
                }
            }

            return inventory;
        }
    }
}