feat: Duplikatsprüfung beim Erstellen eines Empfängers hinzufügen
- `CreateReceiverCommand` wurde aktualisiert, sodass nun `(Id, AlreadyExists)` anstelle von nur `Id` zurückgegeben wird. - Der Handler wurde geändert, um zu überprüfen, ob bereits ein Empfänger mit derselben E-Mail-Adresse vorhanden ist. - Es wird nur dann ein neuer Empfänger erstellt, wenn dieser noch nicht vorhanden ist. - `Microsoft.EntityFrameworkCore` wurde für die Abfrageunterstützung hinzugefügt.
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@ -2,6 +2,7 @@
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using EnvelopeGenerator.Domain.Entities;
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using MediatR;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.EntityFrameworkCore;
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using System.ComponentModel.DataAnnotations;
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using System.Security.Cryptography;
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using System.Text;
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@ -12,7 +13,7 @@ namespace EnvelopeGenerator.Application.Receivers.Commands;
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///
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/// </summary>
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[ApiExplorerSettings(IgnoreApi = true)]
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public record CreateReceiverCommand : IRequest<int>
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public record CreateReceiverCommand : IRequest<(int Id, bool AlreadyExists)>
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{
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/// <summary>
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///
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@ -51,7 +52,7 @@ public record CreateReceiverCommand : IRequest<int>
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/// <summary>
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///
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/// </summary>
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public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverCommand, int>
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public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverCommand, (int Id, bool AlreadyExists)>
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{
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/// <summary>
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///
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@ -73,9 +74,17 @@ public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverComman
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/// <param name="request"></param>
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/// <param name="cancel"></param>
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/// <returns></returns>
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public async Task<int> Handle(CreateReceiverCommand request, CancellationToken cancel)
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public async Task<(int Id, bool AlreadyExists)> Handle(CreateReceiverCommand request, CancellationToken cancel)
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{
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Receiver receiver = await _repo.CreateAsync(request, cancel);
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return receiver.Id;
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var receiver = await _repo.ReadOnly()
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.Where(r => r.EmailAddress == request.EmailAddress)
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.SingleOrDefaultAsync(cancel);
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var alreadyExists = receiver is not null;
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if (!alreadyExists)
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receiver = await _repo.CreateAsync(request, cancel);
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return (receiver!.Id, alreadyExists);
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}
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}
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@ -64,8 +64,8 @@ public class HistoryTests
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.Select(async email =>
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{
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var cmd = new CreateReceiverCommand { EmailAddress = email };
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var id = await Mediator.Send(cmd);
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return (id, email);
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var res = await Mediator.Send(cmd);
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return (res.Id, email);
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})
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);
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_receivers.AddRange(receivers);
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