created all endpoints

BookHive/Endpoints/Loans/PatchReturnLoanEndpoint.cs

@@ -0,0 +1,35 @@
+using BookHive.Models;
+using BookHive.Repositories;
+using BookHive.Specifications.Loans;
+using FastEndpoints;
+
+namespace BookHive.Endpoints.Loans;
+
+public class PatchReturnLoanRequest
+{
+    public int Id { get; set; }
+    public DateOnly ReturnDate { get; set; }
+}
+
+public class PatchReturnLoanEndpoint(LoanRepository loanRepository) : Endpoint<PatchReturnLoanRequest>
+{
+    public override void Configure()
+    {
+        Patch("/loans/{@Id}/return/", x => new { x.Id });
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(PatchReturnLoanRequest req, CancellationToken ct)
+    {
+        Loan? loan = await loanRepository.SingleOrDefaultAsync(new GetLoanByIdSpec(req.Id), ct);
+        if (loan is null)
+        {
+            await Send.NotFoundAsync(ct);
+            await Send.OkAsync(cancellation: ct);
+        }
+        
+        loan?.ReturnDate = req.ReturnDate;
+        await loanRepository.SaveChangesAsync(ct);
+        await Send.OkAsync(cancellation: ct);
+    }
+}