Move data and data loading to plugin libraries.

PkmnLib.Dynamic/Libraries/DataLoaders/JsonParameterLoader.cs

@@ -0,0 +1,38 @@
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.Libraries.DataLoaders;
+
+internal static class JsonParameterLoader
+{
+    internal static object? ToParameter(this JsonNode node)
+    {
+        switch (node.GetValueKind())
+        {
+            case JsonValueKind.Undefined:
+                throw new InvalidOperationException("Undefined value.");
+            case JsonValueKind.Object:
+                return node.AsObject().ToDictionary(x => (StringKey)x.Key, x => x.Value?.ToParameter());
+            case JsonValueKind.Array:
+                return node.AsArray().Select(x => x?.ToParameter()).ToList();
+            case JsonValueKind.String:
+                return node.GetValue<string>();
+            case JsonValueKind.Number:
+                var element = node.GetValue<JsonElement>();
+                if (element.TryGetInt32(out var v))
+                    return v;
+                if (element.TryGetSingle(out var f))
+                    return f;
+                throw new InvalidOperationException("Number is not an integer or a float.");
+            case JsonValueKind.True:
+                return true;
+            case JsonValueKind.False:
+                return false;
+            case JsonValueKind.Null:
+                return null;
+            default:
+                throw new ArgumentOutOfRangeException();
+        }
+    }
+}