57 lines
2.6 KiB
C#
57 lines
2.6 KiB
C#
using System.IO;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using ErsatzTV.Core;
|
|
using ErsatzTV.Core.Domain;
|
|
using ErsatzTV.Core.Interfaces.Metadata;
|
|
using ErsatzTV.Core.Interfaces.Repositories;
|
|
using LanguageExt;
|
|
using MediatR;
|
|
|
|
namespace ErsatzTV.Application.MediaSources.Commands
|
|
{
|
|
public class ScanLocalMediaSourceHandler : IRequestHandler<ScanLocalMediaSource, Either<BaseError, string>>
|
|
{
|
|
private readonly IConfigElementRepository _configElementRepository;
|
|
private readonly ILocalMediaScanner _localMediaScanner;
|
|
private readonly IMediaSourceRepository _mediaSourceRepository;
|
|
|
|
public ScanLocalMediaSourceHandler(
|
|
IMediaSourceRepository mediaSourceRepository,
|
|
IConfigElementRepository configElementRepository,
|
|
ILocalMediaScanner localMediaScanner)
|
|
{
|
|
_mediaSourceRepository = mediaSourceRepository;
|
|
_configElementRepository = configElementRepository;
|
|
_localMediaScanner = localMediaScanner;
|
|
}
|
|
|
|
public Task<Either<BaseError, string>>
|
|
Handle(ScanLocalMediaSource request, CancellationToken cancellationToken) =>
|
|
Validate(request)
|
|
.MapT(
|
|
p => _localMediaScanner.ScanLocalMediaSource(p.LocalMediaSource, p.FFprobePath)
|
|
.Map(_ => p.LocalMediaSource.Name))
|
|
.Bind(v => v.ToEitherAsync());
|
|
|
|
private async Task<Validation<BaseError, RequestParameters>> Validate(ScanLocalMediaSource request) =>
|
|
(await LocalMediaSourceMustExist(request), await ValidateFFprobePath())
|
|
.Apply((localMediaSource, ffprobePath) => new RequestParameters(localMediaSource, ffprobePath));
|
|
|
|
private Task<Validation<BaseError, LocalMediaSource>> LocalMediaSourceMustExist(
|
|
ScanLocalMediaSource request) =>
|
|
_mediaSourceRepository.Get(request.MediaSourceId)
|
|
.Map(maybeMediaSource => maybeMediaSource.Map(ms => ms as LocalMediaSource))
|
|
.Map(v => v.ToValidation<BaseError>($"Local media source {request.MediaSourceId} does not exist."));
|
|
|
|
private Task<Validation<BaseError, string>> ValidateFFprobePath() =>
|
|
_configElementRepository.GetValue<string>(ConfigElementKey.FFprobePath)
|
|
.FilterT(File.Exists)
|
|
.Map(
|
|
ffprobePath =>
|
|
ffprobePath.ToValidation<BaseError>("FFprobe path does not exist on the file system"));
|
|
|
|
private record RequestParameters(LocalMediaSource LocalMediaSource, string FFprobePath);
|
|
}
|
|
}
|