feat: add model for DocumentContent and DocumentSource

src/AnthropicClient/Models/DocumentSource.cs

@@ -0,0 +1,49 @@
+using System.Text.Json.Serialization;
+
+using AnthropicClient.Utils;
+
+namespace AnthropicClient.Models;
+
+/// <summary>
+/// Represents a document source.
+/// </summary>
+public class DocumentSource
+{
+  /// <summary>
+  /// Gets the media type of the document.
+  /// </summary>
+  [JsonPropertyName("media_type")]
+  public string MediaType { get; init; } = string.Empty;
+
+  /// <summary>
+  /// Gets the data of the document.
+  /// </summary>
+  public string Data { get; init; } = string.Empty;
+
+  /// <summary>
+  /// Gets the type of encoding of the document data.
+  /// </summary>
+  public string Type { get; init; } = "base64";
+
+  [JsonConstructor]
+  internal DocumentSource()
+  {
+  }
+
+  /// <summary>
+  /// Initializes a new instance of the <see cref="DocumentSource"/> class.
+  /// </summary>
+  /// <param name="mediaType">The media type of the document.</param>
+  /// <param name="data">The data of the document.</param>
+  /// <exception cref="ArgumentException">Thrown when the media type is invalid.</exception>
+  /// <exception cref="ArgumentNullException">Thrown when the media type or data is null.</exception>
+  /// <returns>A new instance of the <see cref="DocumentSource"/> class.</returns>
+  public DocumentSource(string mediaType, string data)
+  {
+    ArgumentValidator.ThrowIfNull(mediaType, nameof(mediaType));
+    ArgumentValidator.ThrowIfNull(data, nameof(data));
+
+    MediaType = mediaType;
+    Data = data;
+  }
+}