using ClaudeDo.Ui.Services;

namespace ClaudeDo.Ui.Tests.Services;

public class ClipboardImageTempStoreTests : IDisposable
{
    private readonly string _dir;

    public ClipboardImageTempStoreTests()
    {
        _dir = Path.Combine(Path.GetTempPath(), "ClaudeDo.Ui.Tests-" + Guid.NewGuid().ToString("N"));
        Directory.CreateDirectory(_dir);
    }

    public void Dispose() { try { Directory.Delete(_dir, true); } catch { } }

    [Fact]
    public void NewPngPath_IsUniqueAndUnderTheGivenDir()
    {
        var now = new DateTime(2026, 9, 16, 10, 30, 0, DateTimeKind.Utc);

        var a = ClipboardImageTempStore.NewPngPath(_dir, now);
        var b = ClipboardImageTempStore.NewPngPath(_dir, now);

        Assert.NotEqual(a, b);
        Assert.Equal(_dir, Path.GetDirectoryName(a));
        Assert.Equal(".png", Path.GetExtension(a));
    }

    [Fact]
    public void DeleteOlderThan_RemovesOnlyFilesPastTheMaxAge()
    {
        var now = DateTime.UtcNow;
        var oldFile = Path.Combine(_dir, "old.png");
        var freshFile = Path.Combine(_dir, "fresh.png");
        File.WriteAllText(oldFile, "x");
        File.WriteAllText(freshFile, "x");
        File.SetLastWriteTimeUtc(oldFile, now - TimeSpan.FromHours(25));
        File.SetLastWriteTimeUtc(freshFile, now - TimeSpan.FromHours(1));

        ClipboardImageTempStore.DeleteOlderThan(_dir, TimeSpan.FromHours(24), now);

        Assert.False(File.Exists(oldFile));
        Assert.True(File.Exists(freshFile));
    }

    [Fact]
    public void DeleteOlderThan_NonExistentDir_DoesNotThrow()
    {
        ClipboardImageTempStore.DeleteOlderThan(Path.Combine(_dir, "missing"), TimeSpan.FromHours(24), DateTime.UtcNow);
    }
}