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refactor(application): co-locate each command/query with its handler

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One file per use case under the feature folder (Tracks/PlayLists/Users),
dropping the Commands/Queries/Handlers sub-folders and their namespaces.
Each file now holds the record and its handler in namespace
Musify.Application.<Feature>; external usings updated accordingly.

Build: 0 warnings, 0 errors.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Admin
2026-07-05 04:12:59 +02:00
co-authored by Claude Opus 4.8
parent 6e469dbb4a
commit e802c8565d
46 changed files with 158 additions and 309 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backend/Musify.Application/PlayLists/Handlers/AddTrackToPlayListCommandHandler.cs → backend/Musify.Application/PlayLists/AddTrackToPlayList.cs
+4 -2
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@@ -3,11 +3,13 @@ using Mediator;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Musify.Application.Contracts;
using Musify.Application.PlayLists.Commands;
using Musify.Domain.Entities;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record AddTrackToPlayListCommand(long UserId, Guid PlayListId, Guid TrackId)
: ICommand<ErrorOr<Success>>;
public class AddTrackToPlayListCommandHandler(
IDatabase database,
ILogger<AddTrackToPlayListCommandHandler> logger)
backend/Musify.Application/PlayLists/Commands/AddTrackToPlayListCommand.cs
-8
View File
@@ -1,8 +0,0 @@
using ErrorOr;
using Mediator;
namespace Musify.Application.PlayLists.Commands
{
public record AddTrackToPlayListCommand(long UserId, Guid PlayListId, Guid TrackId)
: ICommand<ErrorOr<Success>>;
}
backend/Musify.Application/PlayLists/Commands/CreatePlayListCommand.cs
-13
View File
@@ -1,13 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Commands
{
public record CreatePlayListCommand(
long UserId,
string Name,
string Description,
Guid? PictureIntentId)
: ICommand<ErrorOr<PlayListApplicationResponse>>;
}
backend/Musify.Application/PlayLists/Commands/DeletePlayListCommand.cs
-8
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@@ -1,8 +0,0 @@
using ErrorOr;
using Mediator;
namespace Musify.Application.PlayLists.Commands
{
public record DeletePlayListCommand(long UserId, Guid PlayListId)
: ICommand<ErrorOr<Success>>;
}
backend/Musify.Application/PlayLists/Commands/RemoveTrackFromPlayListCommand.cs
-8
View File
@@ -1,8 +0,0 @@
using ErrorOr;
using Mediator;
namespace Musify.Application.PlayLists.Commands
{
public record RemoveTrackFromPlayListCommand(long UserId, Guid PlayListId, Guid TrackId)
: ICommand<ErrorOr<Success>>;
}
backend/Musify.Application/PlayLists/Commands/RequestPlayListPictureUploadCommand.cs
-13
View File
@@ -1,13 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Commands
{
public record RequestPlayListPictureUploadCommand(
long UserId,
string FileType,
string ContentType,
long? ExpectedSizeBytes = null)
: ICommand<ErrorOr<PlayListPictureUploadResponse>>;
}
backend/Musify.Application/PlayLists/Commands/UpdatePlayListCommand.cs
-14
View File
@@ -1,14 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Commands
{
public record UpdatePlayListCommand(
long UserId,
Guid PlayListId,
string? NewName,
string? NewDescription,
Guid? NewPictureIntentId)
: ICommand<ErrorOr<PlayListApplicationResponse>>;
}
backend/Musify.Application/PlayLists/Handlers/CreatePlayListCommandHandler.cs → backend/Musify.Application/PlayLists/CreatePlayList.cs
+8 -2
View File
@@ -5,14 +5,20 @@ using Microsoft.Extensions.Logging;
using Musify.Application.Configuration;
using Musify.Application.Shared;
using Musify.Application.Events;
using Musify.Application.PlayLists.Commands;
using Musify.Application.PlayLists.Responses;
using Musify.Application.Services;
using Musify.Domain.Entities;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record CreatePlayListCommand(
long UserId,
string Name,
string Description,
Guid? PictureIntentId)
: ICommand<ErrorOr<PlayListApplicationResponse>>;
public class CreatePlayListCommandHandler(
IEventBus eventBus,
IDatabase database,
backend/Musify.Application/PlayLists/Handlers/DeletePlayListCommandHandler.cs → backend/Musify.Application/PlayLists/DeletePlayList.cs
+5 -3
View File
@@ -4,11 +4,13 @@ using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Musify.Application.Contracts;
using Musify.Application.Events;
using Musify.Application.PlayLists.Commands;
using Musify.Domain.ValueObjects;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record DeletePlayListCommand(long UserId, Guid PlayListId)
: ICommand<ErrorOr<Success>>;
public class DeletePlayListCommandHandler(
IDatabase database,
IEventBus eventBus,
@@ -57,4 +59,4 @@ namespace Musify.Application.PlayLists.Handlers
return new Success();
}
}
}
}
backend/Musify.Application/PlayLists/Handlers/GetPlayListByIdQueryHandler.cs → backend/Musify.Application/PlayLists/GetPlayListById.cs
+5 -3
View File
@@ -1,12 +1,14 @@
using ErrorOr;
using Microsoft.EntityFrameworkCore;
using Musify.Application.PlayLists.Responses;
using Musify.Application.PlayLists.Queries;
using Mediator;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record GetPlayListByIdQuery(Guid Id)
: IQuery<ErrorOr<PlayListApplicationResponse>>;
public class GetPlayListByIdQueryHandler(IDatabase database)
: IQueryHandler<GetPlayListByIdQuery, ErrorOr<PlayListApplicationResponse>>
{
@@ -24,4 +26,4 @@ namespace Musify.Application.PlayLists.Handlers
return playList;
}
}
}
}
backend/Musify.Application/PlayLists/Handlers/GetPlayListTracksQueryHandler.cs → backend/Musify.Application/PlayLists/GetPlayListTracks.cs
+7 -2
View File
@@ -3,12 +3,17 @@ using Mediator;
using Microsoft.EntityFrameworkCore;
using Musify.Application.Contracts;
using Musify.Application.Pagination;
using Musify.Application.PlayLists.Queries;
using Musify.Application.Tracks.Responses;
using X.PagedList.EF;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record GetPlayListTracksQuery(
Guid PlayListId,
int PageNumber = 1,
int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<TrackApplicationResponse>>>;
public class GetPlayListTracksQueryHandler(IDatabase database)
: IQueryHandler<GetPlayListTracksQuery, ErrorOr<PaginatedResponse<TrackApplicationResponse>> >
{
backend/Musify.Application/PlayLists/Handlers/GetPlayListsQueryHandler.cs → backend/Musify.Application/PlayLists/GetPlayLists.cs
+5 -3
View File
@@ -2,13 +2,15 @@ using ErrorOr;
using Microsoft.EntityFrameworkCore;
using Musify.Application.Pagination;
using Musify.Application.PlayLists.Responses;
using Musify.Application.PlayLists.Queries;
using X.PagedList.EF;
using Mediator;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record GetPlayListsQuery(int PageNumber = 1, int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<PlayListApplicationResponse>> >;
public class GetPlayListsQueryHandler(IDatabase database)
: IQueryHandler<GetPlayListsQuery, ErrorOr<PaginatedResponse<PlayListApplicationResponse> >>
{
@@ -25,4 +27,4 @@ namespace Musify.Application.PlayLists.Handlers
return PaginatedResponse<PlayListApplicationResponse>.FromPagedList(pagedPlayLists);
}
}
}
}
backend/Musify.Application/PlayLists/Handlers/GetPlayListsByUserIdQueryHandler.cs → backend/Musify.Application/PlayLists/GetPlayListsByUserId.cs
+9 -3
View File
@@ -2,13 +2,19 @@ using ErrorOr;
using Microsoft.EntityFrameworkCore;
using Musify.Application.Pagination;
using Musify.Application.PlayLists.Responses;
using Musify.Application.PlayLists.Queries;
using X.PagedList.EF;
using Mediator;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record GetPlayListsByUserIdQuery(
long UserId,
string? Name,
int PageNumber = 1,
int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<PlayListApplicationResponse>> >;
public class GetPlayListsByUserIdQueryHandler(IDatabase database)
: IQueryHandler<GetPlayListsByUserIdQuery, ErrorOr<PaginatedResponse<PlayListApplicationResponse> > >
{
@@ -34,4 +40,4 @@ namespace Musify.Application.PlayLists.Handlers
return PaginatedResponse<PlayListApplicationResponse>.FromPagedList(pagedPlayLists);
}
}
}
}
backend/Musify.Application/PlayLists/Queries/GetPlayListByIdQuery.cs
-9
View File
@@ -1,9 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Queries
{
public record GetPlayListByIdQuery(Guid Id)
: IQuery<ErrorOr<PlayListApplicationResponse>>;
}
backend/Musify.Application/PlayLists/Queries/GetPlayListTracksQuery.cs
-13
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@@ -1,13 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.Pagination;
using Musify.Application.Tracks.Responses;
namespace Musify.Application.PlayLists.Queries
{
public record GetPlayListTracksQuery(
Guid PlayListId,
int PageNumber = 1,
int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<TrackApplicationResponse>>>;
}
backend/Musify.Application/PlayLists/Queries/GetPlayListsByUserIdQuery.cs
-14
View File
@@ -1,14 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.Pagination;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Queries
{
public record GetPlayListsByUserIdQuery(
long UserId,
string? Name,
int PageNumber = 1,
int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<PlayListApplicationResponse>> >;
}
backend/Musify.Application/PlayLists/Queries/GetPlayListsQuery.cs
-10
View File
@@ -1,10 +0,0 @@
using ErrorOr;
using Mediator;
using Musify.Application.Pagination;
using Musify.Application.PlayLists.Responses;
namespace Musify.Application.PlayLists.Queries
{
public record GetPlayListsQuery(int PageNumber = 1, int PageSize = 10)
: IQuery<ErrorOr<PaginatedResponse<PlayListApplicationResponse>> >;
}
backend/Musify.Application/PlayLists/Handlers/RemoveTrackFromPlayListCommandHandler.cs → backend/Musify.Application/PlayLists/RemoveTrackFromPlayList.cs
+4 -2
View File
@@ -3,10 +3,12 @@ using Mediator;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Musify.Application.Contracts;
using Musify.Application.PlayLists.Commands;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record RemoveTrackFromPlayListCommand(long UserId, Guid PlayListId, Guid TrackId)
: ICommand<ErrorOr<Success>>;
public class RemoveTrackFromPlayListCommandHandler(
IDatabase database,
ILogger<RemoveTrackFromPlayListCommandHandler> logger)
backend/Musify.Application/PlayLists/Handlers/RequestPlayListPictureUploadCommandHandler.cs → backend/Musify.Application/PlayLists/RequestPlayListPictureUpload.cs
+8 -2
View File
@@ -3,15 +3,21 @@ using Mediator;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Musify.Application.Configuration;
using Musify.Application.PlayLists.Commands;
using Musify.Application.PlayLists.Responses;
using Musify.Application.Services;
using Musify.Domain.Entities;
using Musify.Domain.ValueObjects;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record RequestPlayListPictureUploadCommand(
long UserId,
string FileType,
string ContentType,
long? ExpectedSizeBytes = null)
: ICommand<ErrorOr<PlayListPictureUploadResponse>>;
public class RequestPlayListPictureUploadCommandHandler(
IDatabase database,
UploadIntentValidator uploadIntentValidator,
backend/Musify.Application/PlayLists/Handlers/UpdatePlayListCommandHandler.cs → backend/Musify.Application/PlayLists/UpdatePlayList.cs
+9 -2
View File
@@ -5,14 +5,21 @@ using Microsoft.Extensions.Logging;
using Musify.Application.Configuration;
using Musify.Application.Shared;
using Musify.Application.Events;
using Musify.Application.PlayLists.Commands;
using Musify.Application.PlayLists.Responses;
using Musify.Application.Services;
using Musify.Domain.Entities;
using Musify.Application.Contracts;
namespace Musify.Application.PlayLists.Handlers
namespace Musify.Application.PlayLists
{
public record UpdatePlayListCommand(
long UserId,
Guid PlayListId,
string? NewName,
string? NewDescription,
Guid? NewPictureIntentId)
: ICommand<ErrorOr<PlayListApplicationResponse>>;
public class UpdatePlayListCommandHandler(
IEventBus eventBus,
IDatabase database,