namespace Mr.BrickAdventures.Progression.Tests;

public class PlaythroughStoreTests
{
    private static readonly PlaythroughId Id =
        PlaythroughId.Of(new Guid("33333333-3333-3333-3333-333333333333"));

    private static Campaign OneLevel() => Campaign.Of(new[] { LevelId.Of("village_1") });

    [Fact]
    public void A_playthrough_that_was_never_saved_is_absent_not_an_error()
    {
        var store = new InMemoryPlaythroughStore();

        var result = store.Load(Id);

        Assert.Equal(LoadOutcome.Absent, result.Outcome);
    }

    [Fact]
    public void A_playthrough_that_cannot_be_read_is_corrupt_and_not_mistaken_for_absent()
    {
        // This is the version-bump bug. LoadGame returns false for both "no file" and "version
        // mismatch", ContinueGame reads that as no save, calls StartNewGame, and overwrites the
        // player's file. Absent means "offer a new game"; Corrupt means "say something went wrong".
        var store = new InMemoryPlaythroughStore();
        store.Save(Playthrough.StartNew(Id, OneLevel(), Lives.Of(3)));
        store.Corrupt(Id);

        var result = store.Load(Id);

        Assert.Equal(LoadOutcome.Corrupt, result.Outcome);
        Assert.NotEqual(LoadOutcome.Absent, result.Outcome);
    }

    [Fact]
    public void A_saved_playthrough_loads_back()
    {
        var store = new InMemoryPlaythroughStore();
        store.Save(Playthrough.StartNew(Id, OneLevel(), Lives.Of(2)));

        var result = store.Load(Id);

        Assert.Equal(LoadOutcome.Loaded, result.Outcome);
        Assert.Equal(2, result.Value!.Lives.Value);
    }
}