82 lines
3.1 KiB
C#
82 lines
3.1 KiB
C#
using Dapper;
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using ErsatzTV.Core;
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using ErsatzTV.Core.Domain;
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using ErsatzTV.Core.Interfaces.Search;
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using ErsatzTV.Infrastructure.Data;
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using ErsatzTV.Infrastructure.Extensions;
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using Microsoft.EntityFrameworkCore;
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namespace ErsatzTV.Application.Libraries;
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public class DeleteLocalLibraryHandler : LocalLibraryHandlerBase,
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IRequestHandler<DeleteLocalLibrary, Either<BaseError, Unit>>
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{
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private readonly IDbContextFactory<TvContext> _dbContextFactory;
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private readonly ISearchIndex _searchIndex;
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public DeleteLocalLibraryHandler(IDbContextFactory<TvContext> dbContextFactory, ISearchIndex searchIndex)
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{
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_dbContextFactory = dbContextFactory;
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_searchIndex = searchIndex;
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}
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public async Task<Either<BaseError, Unit>> Handle(
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DeleteLocalLibrary request,
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CancellationToken cancellationToken)
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{
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await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
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Validation<BaseError, LocalLibrary> validation = await LocalLibraryMustExist(dbContext, request);
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return await validation.Apply(localLibrary => DoDeletion(dbContext, localLibrary));
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}
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private async Task<Unit> DoDeletion(TvContext dbContext, LocalLibrary localLibrary)
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{
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List<int> ids = await dbContext.Connection.QueryAsync<int>(
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"""
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SELECT MediaItem.Id FROM MediaItem
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INNER JOIN LibraryPath LP on MediaItem.LibraryPathId = LP.Id
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WHERE LP.LibraryId = @LibraryId
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""",
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new { LibraryId = localLibrary.Id })
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.Map(result => result.ToList());
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await _searchIndex.RemoveItems(ids);
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_searchIndex.Commit();
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await dbContext.Connection.ExecuteAsync(
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"""
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DELETE FROM MediaItem WHERE Id IN
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(
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SELECT MI.Id FROM MediaItem MI
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INNER JOIN LibraryPath LP ON MI.LibraryPathId = LP.Id
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WHERE LP.LibraryId = @LibraryId
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)
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""",
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new { LibraryId = localLibrary.Id });
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// delete all library folders (children first)
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IOrderedQueryable<LibraryFolder> orderedFolders = dbContext.LibraryFolders
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.Filter(lf => lf.LibraryPath.LibraryId == localLibrary.Id)
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.OrderByDescending(lp => lp.Path.Length);
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foreach (LibraryFolder folder in orderedFolders)
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{
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await dbContext.Connection.ExecuteAsync(
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"DELETE FROM LibraryFolder WHERE Id = @LibraryFolderId",
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new { LibraryFolderId = folder.Id });
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}
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dbContext.LocalLibraries.Remove(localLibrary);
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await dbContext.SaveChangesAsync();
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return Unit.Default;
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}
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private static Task<Validation<BaseError, LocalLibrary>> LocalLibraryMustExist(
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TvContext dbContext,
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DeleteLocalLibrary request) =>
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dbContext.LocalLibraries
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.SelectOneAsync(ll => ll.Id, ll => ll.Id == request.LocalLibraryId)
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.Map(o => o.ToValidation<BaseError>($"Local library {request.LocalLibraryId} does not exist."));
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}
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