Merge pull request #69 from crupest/image

Post image feature.

1 files changed, 54 insertions, 0 deletions

diff --git a/Timeline/Services/ImageException.cs b/Timeline/Services/ImageException.cs
new file mode 100644
index 00000000..c6126aa3
--- /dev/null
+++ b/Timeline/Services/ImageException.cs
@@ -0,0 +1,54 @@
+using System;

+using System.Globalization;

+

+namespace Timeline.Services

+{

+    [Serializable]

+    public class ImageException : Exception

+    {

+        public enum ErrorReason

+        {

+            /// <summary>

+            /// Decoding image failed.

+            /// </summary>

+            CantDecode,

+            /// <summary>

+            /// Decoding succeeded but the real type is not the specified type.

+            /// </summary>

+            UnmatchedFormat,

+            /// <summary>

+            /// Image is not a square.

+            /// </summary>

+            NotSquare

+        }

+

+        public ImageException() : base(MakeMessage(null)) { }

+        public ImageException(string message) : base(message) { }

+        public ImageException(string message, Exception inner) : base(message, inner) { }

+

+        public ImageException(ErrorReason error, byte[]? data = null, string? requestType = null, string? realType = null) : base(MakeMessage(error)) { Error = error; ImageData = data; RequestType = requestType; RealType = realType; }

+        public ImageException(Exception inner, ErrorReason error, byte[]? data = null, string? requestType = null, string? realType = null) : base(MakeMessage(error), inner) { Error = error; ImageData = data; RequestType = requestType; RealType = realType; }

+

+        protected ImageException(

+          System.Runtime.Serialization.SerializationInfo info,

+          System.Runtime.Serialization.StreamingContext context) : base(info, context) { }

+

+        private static string MakeMessage(ErrorReason? reason) =>

+            string.Format(CultureInfo.InvariantCulture, Resources.Services.Exception.ImageException, reason switch

+            {

+                ErrorReason.CantDecode => Resources.Services.Exception.ImageExceptionCantDecode,

+                ErrorReason.UnmatchedFormat => Resources.Services.Exception.ImageExceptionUnmatchedFormat,

+                ErrorReason.NotSquare => Resources.Services.Exception.ImageExceptionBadSize,

+                _ => Resources.Services.Exception.ImageExceptionUnknownError

+            });

+

+        public ErrorReason? Error { get; }

+#pragma warning disable CA1819 // Properties should not return arrays

+        public byte[]? ImageData { get; }

+#pragma warning restore CA1819 // Properties should not return arrays

+        public string? RequestType { get; }

+

+        // This field will be null if decoding failed.

+        public string? RealType { get; }

+    }

+}