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Application/PlayLists/Handlers/GetPlayListsQueryHandler.cs

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+using Ardalis.Result;
+using DispatchR.Abstractions.Send;
+using Microsoft.EntityFrameworkCore;
+using Musify.Application.Contracts.Application;
+using Musify.Application.Contracts.Infrastructure;
+using Musify.Application.PlayLists.Responses;
+using Musify.Application.PlayLists.Queries;
+using X.PagedList.EF;
+
+namespace Musify.Application.PlayLists.Handlers
+{
+    public class GetPlayListsQueryHandler(IDatabase database)
+        : IRequestHandler<GetPlayListsQuery, Task<Result<PaginatedResponse<PlayListResponse> >> >
+    {
+        public async Task<Result<PaginatedResponse<PlayListResponse> >> Handle(GetPlayListsQuery request, CancellationToken cancellationToken)
+        {
+            var pageNumber = request.PageNumber < 1 ? 1 : request.PageNumber;
+            var pageSize = request.PageSize < 1 ? 10 : request.PageSize;
+
+            var totalCount = await database.PlayLists.CountAsync(cancellationToken);
+
+            var pagedPlayLists = await database.PlayLists
+                .AsNoTracking()
+                .OrderBy(p => p.Id)
+                .Select(p => PlayListResponse.FromEntity(p))
+                .ToPagedListAsync(pageNumber, pageSize, totalCount, cancellationToken);
+
+            var response = new PaginatedResponse<PlayListResponse>(
+                pagedPlayLists.ToArray(),
+                pagedPlayLists.PageNumber,
+                pagedPlayLists.PageSize,
+                pagedPlayLists.PageCount,
+                pagedPlayLists.TotalItemCount,
+                pagedPlayLists.HasNextPage,
+                pagedPlayLists.HasPreviousPage);
+
+            return Result.Success(response);
+        }
+    }
+}