Created delete friend API endpoint

src/FocusAPI/Controllers/SocialController.cs

@@ -43,6 +43,22 @@ public async Task<ActionResult<List<FriendListModel>>> GetAllFriends([FromQuery]
             return Ok(result);
         }
 
+        [HttpDelete]
+        [Route("Friend")]
+        public async Task<ActionResult> DeleteFriend([FromBody] DeleteFriendCommand command)
+        {
+            try
+            {
+                await _mediator.Send(command);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error deleting friend");
+                return StatusCode((int)HttpStatusCode.InternalServerError);
+            }
+
+            return Ok();
+        }
 
         [HttpGet]
         [Route("AllFriendRequests")]

src/FocusAPI/Methods/Social/DeleteFriend.cs

@@ -0,0 +1,50 @@
+using FocusAPI.Data;
+using FocusAPI.Models;
+using FocusCore.Commands.Social;
+using FocusCore.Commands.User;
+using FocusCore.Models;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+
+namespace FocusApi.Methods.Social;
+public class DeleteFriend
+{
+    public class Handler : IRequestHandler<DeleteFriendCommand, Unit>
+    {
+        FocusAPIContext _context;
+        ILogger<Handler> _logger;
+        public Handler(FocusAPIContext context, ILogger<Handler> logger)
+        {
+            _context = context;
+            _logger = logger;
+        }
+
+        public async Task<Unit> Handle(DeleteFriendCommand command, CancellationToken cancellationToken)
+        {
+            try
+            {
+                // Fetch friendship
+                var friendship = await _context.Friends
+                    .Include(f => f.User)
+                    .Include(f => f.Friend)
+                    .FirstOrDefaultAsync(f => f.UserId == command.UserId && f.FriendId == command.FriendId);
+
+                // Remove friend entry
+                friendship.User.Inviters?.Remove(friendship);
+
+                friendship.Friend.Invitees?.Remove(friendship);
+
+                _context.Friends.Remove(friendship);
+
+                await _context.SaveChangesAsync();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error removing friendship from database");
+            }
+
+            return Unit.Value;
+        }
+    }
+}

src/FocusCore/Commands/Social/DeleteFriendCommand.cs

@@ -0,0 +1,13 @@
+using MediatR;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FocusCore.Commands.Social;
+public class DeleteFriendCommand : IRequest<Unit>
+{
+    public Guid UserId { get; set; }
+    public Guid FriendId { get; set; }
+}