🐛 Bug fixes in post embed links

DysonNetwork.Sphere/Connection/WebReader/EmbeddableBase.cs

@@ -0,0 +1,44 @@
+using System.Reflection;
+using System.Text.Json.Serialization;
+
+namespace DysonNetwork.Sphere.Connection.WebReader;
+
+/// <summary>
+/// The embeddable can be used in the post or messages' meta's embeds fields
+/// To render a richer type of content.
+///
+/// A simple example of using link preview embed:
+/// <code>
+/// {
+///     // ... post content
+///     "meta": {
+///         "embeds": [
+///             {
+///                 "type": "link",
+///                 "title: "...",
+///                 /// ...
+///             }
+///         ]
+///     }
+/// }
+/// </code>
+/// </summary>
+public abstract class EmbeddableBase
+{
+    public abstract string Type { get; }
+
+    public Dictionary<string, object> ToDictionary()
+    {
+        var dict = new Dictionary<string, object>();
+        foreach (var prop in GetType().GetProperties())
+        {
+            if (prop.GetCustomAttribute<JsonIgnoreAttribute>() is not null)
+                continue;
+            var value = prop.GetValue(this);
+            if (value is null) continue;
+            dict[prop.Name] = value;
+        }
+
+        return dict;
+    }
+}