using System;
using System.IO;
using System.Threading.Tasks;
using Moq;
using Xunit;
using TwitchArchive.Core.Services;

namespace TwitchArchive.Tests
{
    public class ProcessorServiceTests : IDisposable
    {
        private readonly string _tmp;

        public ProcessorServiceTests()
        {
            _tmp = Path.Combine(Path.GetTempPath(), "ta_proc_" + Guid.NewGuid().ToString("N"));
            Directory.CreateDirectory(_tmp);
        }

        [Fact]
        public async Task ProcessRawStream_CallsFfmpeg_CopyMode()
        {
            var mock = new Mock<IProcessRunner>();
            mock.Setup(r => r.RunAsync(It.IsAny<ProcessRunOptions>(), default)).ReturnsAsync(new ProcessRunResult { ExitCode = 0 });
            var svc = new ProcessorService(mock.Object);

            var raw = Path.Combine(_tmp, "in.ts");
            var outp = Path.Combine(_tmp, "out.mp4");
            File.WriteAllText(raw, "x");

            var ok = await svc.ProcessRawStreamAsync(raw, outp, "best");
            Assert.True(ok);
            mock.Verify(r => r.RunAsync(It.Is<ProcessRunOptions>(o => o.FileName == "ffmpeg" && o.Arguments.Contains("-c:v copy")), default), Times.Once);
        }

        [Fact]
        public async Task ProcessRawStream_AudioOnly_UsesAac()
        {
            var mock = new Mock<IProcessRunner>();
            mock.Setup(r => r.RunAsync(It.IsAny<ProcessRunOptions>(), default)).ReturnsAsync(new ProcessRunResult { ExitCode = 0 });
            var svc = new ProcessorService(mock.Object);

            var raw = Path.Combine(_tmp, "in.ts");
            var outp = Path.Combine(_tmp, "out.mp4");
            File.WriteAllText(raw, "x");

            var ok = await svc.ProcessRawStreamAsync(raw, outp, "audio_only");
            Assert.True(ok);
            mock.Verify(r => r.RunAsync(It.Is<ProcessRunOptions>(o => o.FileName == "ffmpeg" && o.Arguments.Contains("-vn") && o.Arguments.Contains("-c:a aac")), default), Times.Once);
        }

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