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

namespace NeonSprawl.Server.Tests.Game.Encounters;

public sealed class InMemoryEncounterCompleteEventStoreTests
{
    private const string PlayerId = "dev-local-1";
    private const string EncounterId = "prototype_combat_pocket";
    private static readonly DateTimeOffset CompletedAt = new(2026, 5, 31, 20, 0, 0, TimeSpan.Zero);

    [Fact]
    public void TryRecord_ShouldBeIdempotent_AtStoreLayer()
    {
        // Arrange
        var store = new InMemoryEncounterCompleteEventStore();
        var completeEvent = CreatePrototypeEvent();
        // Act
        var first = store.TryRecord(completeEvent);
        var second = store.TryRecord(completeEvent with { CompletedAt = CompletedAt.AddHours(1) });
        var found = store.TryGet(PlayerId, EncounterId, out var stored);
        // Assert
        Assert.True(first);
        Assert.False(second);
        Assert.True(found);
        Assert.Equal(completeEvent.IdempotencyKey, stored.IdempotencyKey);
        Assert.Equal(CompletedAt, stored.CompletedAt);
        Assert.Equal(2, stored.GrantedItems.Count);
    }

    [Fact]
    public void TryRecord_ShouldFailClosed_WhenPlayerOrEncounterIdIsEmpty()
    {
        // Arrange
        var store = new InMemoryEncounterCompleteEventStore();
        var invalidEvent = CreatePrototypeEvent() with { PlayerId = "   " };
        // Act
        var recorded = store.TryRecord(invalidEvent);
        var found = store.TryGet("   ", EncounterId, out _);
        // Assert
        Assert.False(recorded);
        Assert.False(found);
    }

    private static EncounterCompleteEvent CreatePrototypeEvent() =>
        new(
            PlayerId,
            EncounterId,
            "prototype_combat_pocket_clear",
            [
                new EncounterGrantApplied("scrap_metal_bulk", 10),
                new EncounterGrantApplied("contract_handoff_token", 1),
            ],
            CompletedAt,
            $"{PlayerId}:{EncounterId}");
}