Add Windows desktop version

windows/StreamPlayer.Desktop/JsonExtensions.cs

@@ -0,0 +1,63 @@
+using System.Text.Json;
+
+namespace StreamPlayer.Desktop;
+
+public static class JsonExtensions
+{
+    public static string GetPropertyOrDefault(this JsonElement element, string propertyName)
+    {
+        if (element.ValueKind == JsonValueKind.Object && element.TryGetProperty(propertyName, out var property))
+        {
+            return property.ValueKind switch
+            {
+                JsonValueKind.String => property.GetString() ?? string.Empty,
+                JsonValueKind.Number => property.GetRawText(),
+                JsonValueKind.True => "true",
+                JsonValueKind.False => "false",
+                _ => property.GetRawText()
+            };
+        }
+
+        return string.Empty;
+    }
+
+    public static int GetPropertyOrDefaultInt(this JsonElement element, string propertyName, int fallback = 0)
+    {
+        if (element.ValueKind == JsonValueKind.Object && element.TryGetProperty(propertyName, out var property))
+        {
+            if (property.TryGetInt32(out var value))
+            {
+                return value;
+            }
+        }
+        return fallback;
+    }
+
+    public static long GetPropertyOrDefaultLong(this JsonElement element, string propertyName, long fallback = 0)
+    {
+        if (element.ValueKind == JsonValueKind.Object && element.TryGetProperty(propertyName, out var property))
+        {
+            if (property.TryGetInt64(out var value))
+            {
+                return value;
+            }
+        }
+        return fallback;
+    }
+
+    public static bool GetPropertyOrDefaultBool(this JsonElement element, string propertyName, bool fallback = false)
+    {
+        if (element.ValueKind == JsonValueKind.Object && element.TryGetProperty(propertyName, out var property))
+        {
+            if (property.ValueKind == JsonValueKind.True)
+            {
+                return true;
+            }
+            if (property.ValueKind == JsonValueKind.False)
+            {
+                return false;
+            }
+        }
+        return fallback;
+    }
+}