From 11f489655641c585c9289061ffc77adcc1a097db Mon Sep 17 00:00:00 2001
From: Developer 02 <developer02@didaloghe.onmicrosoft.com>
Date: Mon, 14 Apr 2025 16:12:07 +0200
Subject: [PATCH] =?UTF-8?q?ReadDocumentQuery=20und=20Handler=20zum=20Abruf?=
 =?UTF-8?q?en=20von=20Dokumenten=20hinzuf=C3=BCgen?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Führt die Struktur `ReadDocumentQuery` zur Abfrage von Dokumenten anhand ihrer eindeutigen Kennung oder der zugehörigen Umschlagkennung ein und implementiert die Schnittstelle `IRequest<ReadDocumentResponse>` von MediatR.

Eine neue Handler-Klasse, `ReadDocumentQueryHandler`, wird erstellt, um die Abfrage zu verarbeiten, obwohl die Verarbeitungslogik noch nicht implementiert ist.

Außerdem wird eine Antwortstruktur, `ReadDocumentResponse`, definiert, um die Daten zu kapseln, die beim Lesen eines Dokuments zurückgegeben werden, einschließlich der Eigenschaften für die ID des Dokuments, die Umschlag-ID, das Hinzufügedatum und die Binärdaten.

Die erforderlichen Namespaces werden für die richtige Organisation und Funktionalität hinzugefügt.
---
 .../Queries/Read/ReadDocumentQuery.cs         | 12 ++++++++++++
 .../Queries/Read/ReadDocumentQueryHandler.cs  | 19 +++++++++++++++++++
 .../Queries/Read/ReadDocumentResponse.cs      | 15 +++++++++++++++
 3 files changed, 46 insertions(+)
 create mode 100644 EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQuery.cs
 create mode 100644 EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQueryHandler.cs
 create mode 100644 EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs

diff --git a/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQuery.cs b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQuery.cs
new file mode 100644
index 00000000..9f05f21a
--- /dev/null
+++ b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQuery.cs
@@ -0,0 +1,12 @@
+using MediatR;
+
+namespace EnvelopeGenerator.Application.Documents.Queries.Read;
+
+/// <summary>
+/// Represents a query to read a document based on its unique identifier or associated envelope identifier.
+/// </summary>
+/// <param name="Id">The unique identifier of the document. Optional.</param>
+/// <param name="EnvelopeId">The identifier of the envelope associated with the document. Optional.</param>
+public record ReadDocumentQuery(int? Id = null, int? EnvelopeId = null) : IRequest<ReadDocumentResponse>
+{
+}
diff --git a/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQueryHandler.cs b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQueryHandler.cs
new file mode 100644
index 00000000..af4e1a74
--- /dev/null
+++ b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentQueryHandler.cs
@@ -0,0 +1,19 @@
+using EnvelopeGenerator.Application.Contracts.Repositories;
+using MediatR;
+
+namespace EnvelopeGenerator.Application.Documents.Queries.Read;
+
+public class ReadDocumentQueryHandler : IRequestHandler<ReadDocumentQuery, ReadDocumentResponse>
+{
+    public IEnvelopeDocumentRepository _repo;
+
+    public ReadDocumentQueryHandler(IEnvelopeDocumentRepository envelopeDocumentRepository)
+    {
+        _repo = envelopeDocumentRepository;
+    }
+
+    public Task<ReadDocumentResponse> Handle(ReadDocumentQuery query, CancellationToken cancellationToken)
+    {
+        throw new NotImplementedException();
+    }
+}
diff --git a/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs
new file mode 100644
index 00000000..7d9b6ea0
--- /dev/null
+++ b/EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs
@@ -0,0 +1,15 @@
+namespace EnvelopeGenerator.Application.Documents.Queries.Read;
+
+/// <summary>
+/// Represents the response for reading a document.
+/// </summary>
+/// <param name="Guid">The unique identifier of the document.</param>
+/// <param name="EnvelopeId">The identifier of the associated envelope.</param>
+/// <param name="AddedWhen">The date and time when the document was added.</param>
+/// <param name="ByteData">The binary data of the document, if available.</param>
+public record ReadDocumentResponse(
+    int Guid,
+    int EnvelopeId,
+    DateTime AddedWhen,
+    byte[]? ByteData
+);
\ No newline at end of file