feat(program): Konfiguration aus appsettings.json laden

Die Anwendung lädt nun Konfigurationseinstellungen aus einer "appsettings.json"-Datei im Basisverzeichnis.
Dies ermöglicht eine externe Konfiguration ohne Codeänderungen und unterstützt das Neuladen der Einstellungen zur Laufzeit bei Änderungen der Datei.

EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponse.cs

@@ -3,23 +3,8 @@
 /// <summary>
 /// Represents the response for reading a document.
 /// </summary>
-public class ReadDocumentResponse
+public class ReadDocumentResponse : ReadDocumentResponseBase
 {
-    /// <summary>
-    /// The unique identifier of the document.
-    /// </summary>
-    public int Guid { get; init; }
-
-    /// <summary>
-    /// The identifier of the associated envelope.
-    /// </summary>
-    public int EnvelopeId { get; init; }
-
-    /// <summary>
-    /// The date and time when the document was added.
-    /// </summary>
-    public DateTime AddedWhen { get; init; }
-
     /// <summary>
     /// The binary data of the document, if available.
     /// </summary>

EnvelopeGenerator.Application/Documents/Queries/Read/ReadDocumentResponseBase.cs

@@ -0,0 +1,22 @@
+namespace EnvelopeGenerator.Application.Documents.Queries.Read;
+
+/// <summary>
+/// Represents the response for reading a document.
+/// </summary>
+public class ReadDocumentResponseBase
+{
+    /// <summary>
+    /// The unique identifier of the document.
+    /// </summary>
+    public int Guid { get; init; }
+
+    /// <summary>
+    /// The identifier of the associated envelope.
+    /// </summary>
+    public int EnvelopeId { get; init; }
+
+    /// <summary>
+    /// The date and time when the document was added.
+    /// </summary>
+    public DateTime AddedWhen { get; init; }
+}

EnvelopeGenerator.Terminal/CommandManager.cs

@@ -32,11 +32,27 @@ public class CommandManager
     [Subcommand]
     public IEnvelopeReceiverService EnvelopeReceiver => _envelopeReceiverService;
 
-    [Command]
+    [Command(ArgumentSeparatorStrategy = ArgumentSeparatorStrategy.EndOfOptions)]
-    public async Task ReadDocument(IConsole console, int? id = null, int? envelopeId = null)
+    public async Task ReadDocument(IConsole console,
+        [Option(Description = "ID of the document.")] int? id = null,
+        [Option(Description = "ID of the envelope containing the document.")] int? envelopeId = null,
+        [Option(Description = "Path to save the PDF")] bool save = false,
+        [Option(Description = "Directory to save the PDF")] string? dir = null,
+        [Option(Description = "Name of file to save the PDF")] string? fileName = null)
     {
         ReadDocumentQuery query = new(id, envelopeId);
         var document = await _mediator.Send(query);
-        console.WriteLine(JsonSerializer.Serialize(document, Options));
+        console.WriteLine(JsonSerializer.Serialize(save ?  document as ReadDocumentResponseBase : document, Options));
+
+        if (save)
+        {
+            dir ??= AppContext.BaseDirectory;
+            fileName ??= $"D{document?.Guid}E{document?.EnvelopeId}.pdf";
+
+            var path = Path.Combine(dir, fileName);
+            console.WriteLine("Save to " + path);
+
+            File.WriteAllBytes(path, document?.ByteData ?? Array.Empty<byte>());
+        }
     }
 }

EnvelopeGenerator.Terminal/Program.cs

@@ -1,4 +1,5 @@
-using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
 
 namespace EnvelopeGenerator.Terminal;
 
@@ -8,6 +9,10 @@ public class Program
     {
         var builder = Host.CreateApplicationBuilder(args);
 
+        builder.Configuration
+               .SetBasePath(AppContext.BaseDirectory)
+               .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
+
         var config = builder.Configuration;
 
         builder.Services.AddCommandManagerRunner(config);