Added lots of commands

Simplified KeePass client

ModernKeePass.Application/Group/Commands/CreateEntry/CreateEntryCommand.cs

@@ -0,0 +1,41 @@
+using System.Threading.Tasks;
+using AutoMapper;
+using MediatR;
+using ModernKeePass.Application.Common.Interfaces;
+using ModernKeePass.Application.Database.Queries.IsDatabaseOpen;
+using ModernKeePass.Application.Entry.Models;
+using ModernKeePass.Application.Group.Models;
+using ModernKeePass.Domain.Exceptions;
+
+namespace ModernKeePass.Application.Group.Commands.CreateEntry
+{
+    public class CreateEntryCommand : IRequest<EntryVm>
+    {
+        public GroupVm ParentGroup { get; set; }
+
+        public class CreateEntryCommandHandler : IAsyncRequestHandler<CreateEntryCommand, EntryVm>
+        {
+            private readonly IDatabaseProxy _database;
+            private readonly IMediator _mediator;
+            private readonly IMapper _mapper;
+
+            public CreateEntryCommandHandler(IDatabaseProxy database, IMediator mediator, IMapper mapper)
+            {
+                _database = database;
+                _mediator = mediator;
+                _mapper = mapper;
+            }
+
+            public async Task<EntryVm> Handle(CreateEntryCommand message)
+            {
+                var isDatabaseOpen = await _mediator.Send(new IsDatabaseOpenQuery());
+                if (!isDatabaseOpen) throw new DatabaseClosedException();
+
+                var entry = _database.CreateEntry(message.ParentGroup.Id);
+                var entryVm = _mapper.Map<EntryVm>(entry);
+                message.ParentGroup.Entries.Add(entryVm);
+                return entryVm;
+            }
+        }
+    }
+}