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81 lines
3.1 KiB
81 lines
3.1 KiB
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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