Move data and data loading to plugin libraries.

PkmnLib.Dynamic/Libraries/DataLoaders/ItemDataLoader.cs

@@ -0,0 +1,51 @@
+using System.Collections.Immutable;
+using System.Text.Json;
+using JetBrains.Annotations;
+using PkmnLib.Dynamic.Libraries.DataLoaders.Models;
+using PkmnLib.Static;
+using PkmnLib.Static.Libraries;
+using PkmnLib.Static.Moves;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.Libraries.DataLoaders;
+
+public static class ItemDataLoader
+{
+    public static ItemLibrary LoadItems(Stream stream, Action<List<SerializedItem>>? onAfterLoad = null)
+    {
+        var library = new ItemLibrary();
+        var obj = JsonSerializer.Deserialize<List<SerializedItem>>(stream, JsonOptions.DefaultOptions);
+        if (obj == null)
+            throw new InvalidDataException("Item data is empty.");
+        onAfterLoad?.Invoke(obj);
+        var items = obj.Select(DeserializeItem);
+        foreach (var i in items)
+            library.Add(i);
+        return library;
+    }
+
+    public delegate IItem ItemFactoryDelegate(SerializedItem serialized, StringKey name, ItemCategory type,
+        BattleItemCategory battleType, int price, ImmutableHashSet<StringKey> flags, ISecondaryEffect? effect,
+        ISecondaryEffect? battleTriggerEffect, Dictionary<StringKey, object?> additionalData);
+
+    [PublicAPI]
+    public static ItemFactoryDelegate ItemConstructor { get; set; } =
+        (_, name, type, battleType, price, flags, effect, battleTriggerEffect, additionalData) => new ItemImpl(name,
+            type, battleType, price, flags, effect, battleTriggerEffect, additionalData);
+
+    private static IItem DeserializeItem(SerializedItem serialized)
+    {
+        if (!Enum.TryParse<ItemCategory>(serialized.ItemType, true, out var itemType))
+            throw new InvalidDataException($"Item type {serialized.ItemType} is not valid for item {serialized.Name}.");
+        Enum.TryParse(serialized.BattleType, true, out BattleItemCategory battleType);
+        var effect = serialized.Effect?.ParseEffect();
+        var battleTriggerEffect = serialized.BattleEffect?.ParseEffect();
+        var additionalData =
+            serialized.AdditionalData?.ToDictionary(x => (StringKey)x.Key, x => x.Value.ToParameter()) ??
+            new Dictionary<StringKey, object?>();
+
+        return ItemConstructor(serialized, serialized.Name, itemType, battleType, serialized.Price,
+            serialized.Flags.Select(x => (StringKey)x).ToImmutableHashSet(), effect, battleTriggerEffect,
+            additionalData);
+    }
+}