using NeonSprawl.Server.Game.Combat;
using NeonSprawl.Server.Game.Npc;
using Xunit;

namespace NeonSprawl.Server.Tests.Game.Combat;

public sealed class NpcAttackOperationsTests
{
    [Fact]
    public void TryResolveTelegraphComplete_ShouldApplyCatalogDamage_WhenHolderMatches()
    {
        // Arrange
        var threatStore = new InMemoryThreatStateStore();
        var playerHealthStore = new InMemoryPlayerCombatHealthStore();
        _ = threatStore.TrySetHolder(PrototypeNpcRegistry.PrototypeNpcMeleeId, "dev-local-1");
        // Act
        var ok = NpcAttackOperations.TryResolveTelegraphComplete(
            PrototypeNpcRegistry.PrototypeNpcMeleeId,
            "dev-local-1",
            attackDamage: 15,
            playerHealthStore,
            threatStore);
        // Assert
        Assert.True(ok);
        playerHealthStore.TryGet("dev-local-1", out var snapshot);
        Assert.Equal(85, snapshot.CurrentHp);
    }

    [Fact]
    public void TryResolveTelegraphComplete_ShouldNoOp_WhenHolderCleared()
    {
        // Arrange
        var threatStore = new InMemoryThreatStateStore();
        var playerHealthStore = new InMemoryPlayerCombatHealthStore();
        _ = threatStore.TrySetHolder(PrototypeNpcRegistry.PrototypeNpcMeleeId, "dev-local-1");
        _ = threatStore.TryClearHolder(PrototypeNpcRegistry.PrototypeNpcMeleeId);
        // Act
        var ok = NpcAttackOperations.TryResolveTelegraphComplete(
            PrototypeNpcRegistry.PrototypeNpcMeleeId,
            "dev-local-1",
            attackDamage: 15,
            playerHealthStore,
            threatStore);
        // Assert
        Assert.False(ok);
        playerHealthStore.TryGet("dev-local-1", out var snapshot);
        Assert.Equal(PlayerCombatHealthDefaults.MaxHp, snapshot.CurrentHp);
    }

    [Fact]
    public void TryResolveTelegraphComplete_ShouldNoOp_WhenHolderPlayerDiffers()
    {
        // Arrange
        var threatStore = new InMemoryThreatStateStore();
        var playerHealthStore = new InMemoryPlayerCombatHealthStore();
        _ = threatStore.TrySetHolder(PrototypeNpcRegistry.PrototypeNpcMeleeId, "other-player");
        // Act
        var ok = NpcAttackOperations.TryResolveTelegraphComplete(
            PrototypeNpcRegistry.PrototypeNpcMeleeId,
            "dev-local-1",
            attackDamage: 15,
            playerHealthStore,
            threatStore);
        // Assert
        Assert.False(ok);
        playerHealthStore.TryGet("dev-local-1", out var snapshot);
        Assert.Equal(PlayerCombatHealthDefaults.MaxHp, snapshot.CurrentHp);
    }

    [Fact]
    public void TryResolveTelegraphComplete_ShouldSucceedWithoutMutation_WhenAttackDamageZero()
    {
        // Arrange
        var threatStore = new InMemoryThreatStateStore();
        var playerHealthStore = new InMemoryPlayerCombatHealthStore();
        _ = threatStore.TrySetHolder(PrototypeNpcRegistry.PrototypeNpcMeleeId, "dev-local-1");
        // Act
        var ok = NpcAttackOperations.TryResolveTelegraphComplete(
            PrototypeNpcRegistry.PrototypeNpcMeleeId,
            "dev-local-1",
            attackDamage: 0,
            playerHealthStore,
            threatStore);
        // Assert
        Assert.True(ok);
        playerHealthStore.TryGet("dev-local-1", out var snapshot);
        Assert.Equal(PlayerCombatHealthDefaults.MaxHp, snapshot.CurrentHp);
    }
}