ersatztv/ErsatzTV/Controllers/InternalController.cs

using System.Diagnostics;
using ErsatzTV.Application.Streaming;
using ErsatzTV.Extensions;
using MediatR;
using Microsoft.AspNetCore.Mvc;

namespace ErsatzTV.Controllers;

[ApiController]
[ApiExplorerSettings(IgnoreApi = true)]
public class InternalController : ControllerBase
{
    private readonly ILogger<InternalController> _logger;
    private readonly IMediator _mediator;

    public InternalController(IMediator mediator, ILogger<InternalController> logger)
    {
        _mediator = mediator;
        _logger = logger;
    }

    [HttpGet("ffmpeg/concat/{channelNumber}")]
    public Task<IActionResult> GetConcatPlaylist(string channelNumber) =>
        _mediator.Send(new GetConcatPlaylistByChannelNumber(Request.Scheme, Request.Host.ToString(), channelNumber))
            .ToActionResult();

    [HttpGet("ffmpeg/stream/{channelNumber}")]
    public Task<IActionResult> GetStream(
        string channelNumber,
        [FromQuery]
        string mode = "mixed") =>
        _mediator.Send(
                new GetPlayoutItemProcessByChannelNumber(
                    channelNumber,
                    mode,
                    DateTimeOffset.Now,
                    false,
                    true,
                    0,
                    Option<int>.None))
            .Map(
                result =>
                    result.Match<IActionResult>(
                        processModel =>
                        {
                            Process process = processModel.Process;

                            _logger.LogInformation(
                                "ffmpeg arguments {FFmpegArguments}",
                                string.Join(" ", process.StartInfo.ArgumentList));
                            process.Start();
                            return new FileStreamResult(process.StandardOutput.BaseStream, "video/mp2t");
                        },
                        error =>
                        {
                            _logger.LogError(
                                "Failed to create stream for channel {ChannelNumber}: {Error}",
                                channelNumber,
                                error.Value);
                            return BadRequest(error.Value);
                        }
                    ));
}