using System.Globalization; using System.Threading.Channels; using ErsatzTV.Application.Libraries; using ErsatzTV.Core; using ErsatzTV.Core.Domain; using ErsatzTV.Core.Errors; using ErsatzTV.Core.Interfaces.Repositories; using ErsatzTV.FFmpeg.Runtime; using ErsatzTV.Infrastructure.Data; using Microsoft.EntityFrameworkCore; namespace ErsatzTV.Application.MediaSources; public class CallLocalLibraryScannerHandler : CallLibraryScannerHandler, IRequestHandler>, IRequestHandler> { public CallLocalLibraryScannerHandler( IDbContextFactory dbContextFactory, IConfigElementRepository configElementRepository, ChannelWriter channel, IMediator mediator, IRuntimeInfo runtimeInfo) : base(dbContextFactory, configElementRepository, channel, mediator, runtimeInfo) { } Task> IRequestHandler>.Handle( ForceScanLocalLibrary request, CancellationToken cancellationToken) => Handle(request, cancellationToken); Task> IRequestHandler>.Handle( ScanLocalLibraryIfNeeded request, CancellationToken cancellationToken) => Handle(request, cancellationToken); private async Task> Handle(IScanLocalLibrary request, CancellationToken cancellationToken) { Validation validation = await Validate(request); return await validation.Match( scanner => PerformScan(scanner, request, cancellationToken), error => { foreach (ScanIsNotRequired scanIsNotRequired in error.OfType()) { return Task.FromResult>(scanIsNotRequired); } return Task.FromResult>(error.Join()); }); } private async Task> PerformScan( string scanner, IScanLocalLibrary request, CancellationToken cancellationToken) { var arguments = new List { "scan-local", request.LibraryId.ToString(CultureInfo.InvariantCulture) }; if (request.ForceScan) { arguments.Add("--force"); } return await base.PerformScan(scanner, arguments, cancellationToken); } protected override async Task GetLastScan(TvContext dbContext, IScanLocalLibrary request) { List libraryPaths = await dbContext.LibraryPaths .Filter(lp => lp.LibraryId == request.LibraryId) .ToListAsync(); DateTime minDateTime = libraryPaths.Count != 0 ? libraryPaths.Min(lp => lp.LastScan ?? SystemTime.MinValueUtc) : SystemTime.MaxValueUtc; return new DateTimeOffset(minDateTime, TimeSpan.Zero); } protected override bool ScanIsRequired( DateTimeOffset lastScan, int libraryRefreshInterval, IScanLocalLibrary request) { if (lastScan == SystemTime.MaxValueUtc) { return false; } DateTimeOffset nextScan = lastScan + TimeSpan.FromHours(libraryRefreshInterval); return request.ForceScan || libraryRefreshInterval > 0 && nextScan < DateTimeOffset.Now; } }