using NeonSprawl.Server.Game.Encounters;
using Xunit;

namespace NeonSprawl.Server.Tests.Game.Encounters;

public sealed class InMemoryEncounterProgressStoreTests
{
    private const string PlayerId = "dev-local-1";
    private const string EncounterId = "prototype_combat_pocket";
    private const string MeleeNpc = "prototype_npc_melee";
    private const string RangedNpc = "prototype_npc_ranged";

    [Fact]
    public void TryActivate_ShouldReturnTrueThenFalse_WhenCalledTwice()
    {
        // Arrange
        var store = new InMemoryEncounterProgressStore();
        // Act
        var first = store.TryActivate(PlayerId, EncounterId);
        var second = store.TryActivate(PlayerId, EncounterId);
        // Assert
        Assert.True(first);
        Assert.False(second);
        Assert.True(store.TryGetProgress(PlayerId, EncounterId, out var progress));
        Assert.True(progress.Started);
        Assert.Empty(progress.DefeatedNpcInstanceIds);
    }

    [Fact]
    public void TryAddDefeatedTarget_ShouldReturnFalse_WhenEncounterNotActivated()
    {
        // Arrange
        var store = new InMemoryEncounterProgressStore();
        // Act
        var added = store.TryAddDefeatedTarget(PlayerId, EncounterId, MeleeNpc);
        // Assert
        Assert.False(added);
        Assert.False(store.TryGetProgress(PlayerId, EncounterId, out _));
    }

    [Fact]
    public void TryAddDefeatedTarget_ShouldReturnFalseOnDuplicate_AndTrueForSecondNpc()
    {
        // Arrange
        var store = new InMemoryEncounterProgressStore();
        _ = store.TryActivate(PlayerId, EncounterId);
        // Act
        var firstAdd = store.TryAddDefeatedTarget(PlayerId, EncounterId, MeleeNpc);
        var duplicate = store.TryAddDefeatedTarget(PlayerId, EncounterId, MeleeNpc);
        var secondAdd = store.TryAddDefeatedTarget(PlayerId, EncounterId, RangedNpc);
        // Assert
        Assert.True(firstAdd);
        Assert.False(duplicate);
        Assert.True(secondAdd);
        Assert.True(store.TryGetProgress(PlayerId, EncounterId, out var progress));
        Assert.Equal(2, progress.DefeatedNpcInstanceIds.Count);
        Assert.Contains(MeleeNpc, progress.DefeatedNpcInstanceIds);
        Assert.Contains(RangedNpc, progress.DefeatedNpcInstanceIds);
    }
}