using Mr.BrickAdventures.Progression.Adapters;

namespace Mr.BrickAdventures.Progression.Tests;

public sealed class JsonProfileStoreTests : IDisposable
{
    private readonly string _directory =
        Path.Combine(Path.GetTempPath(), "ppc-progression-" + Guid.NewGuid().ToString("N"));

    private static readonly LevelId Level = LevelId.Of("village_1");

    public void Dispose()
    {
        if (Directory.Exists(_directory)) Directory.Delete(_directory, recursive: true);
    }

    [Fact]
    public void A_profile_survives_a_round_trip_through_a_real_file()
    {
        var store = new JsonProfileStore(_directory);
        var profile = Profile.Empty();
        profile.RecordTime(Level, LevelTime.Of(31.25));
        profile.UnlockAchievement(AchievementId.Of("rescue_ten_kids"));
        profile.Record(StatName.Deaths, 7);

        store.Save(profile);
        var result = store.Load();

        Assert.Equal(LoadOutcome.Loaded, result.Outcome);
        Assert.Equal(LevelTime.Of(31.25), result.Value!.BestTimeFor(Level));
        Assert.True(result.Value.HasAchievement(AchievementId.Of("rescue_ten_kids")));
        Assert.Equal(7, result.Value.ReadStat(StatName.Deaths));
    }

    [Fact]
    public void On_a_first_run_there_is_no_profile_file_and_that_is_absent()
    {
        Assert.Equal(LoadOutcome.Absent, new JsonProfileStore(_directory).Load().Outcome);
    }

    [Fact]
    public void Saving_a_playthrough_does_not_touch_the_profile_file()
    {
        // The point of one file per aggregate. A run being saved on every level completion must not
        // rewrite achievements and best times, and a corrupt slot must not cost them.
        var profiles = new JsonProfileStore(_directory);
        var playthroughs = new JsonPlaythroughStore(_directory);
        var profile = Profile.Empty();
        profile.RecordTime(Level, LevelTime.Of(31.25));
        profiles.Save(profile);

        var profilePath = Directory.GetFiles(_directory, "profile*.json").Single();
        var before = File.GetLastWriteTimeUtc(profilePath);
        var contentBefore = File.ReadAllText(profilePath);

        playthroughs.Save(Playthrough.StartNew(
            PlaythroughId.Of(Guid.NewGuid()),
            Campaign.Of(new[] { Level }),
            Lives.Of(3)));

        Assert.Equal(before, File.GetLastWriteTimeUtc(profilePath));
        Assert.Equal(contentBefore, File.ReadAllText(profilePath));
        Assert.Equal(2, Directory.GetFiles(_directory, "*.json").Length);
    }
}