Slight cleanup, do some TODOs

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Camouflage.cs

@@ -1,7 +1,44 @@
+using PkmnLib.Plugin.Gen7.Scripts.Utils;
+
 namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 
 [Script(ScriptCategory.Move, "camouflage")]
 public class Camouflage : Script
 {
-    // FIXME: Implement this. How to get the terrain in a sane manner? See also SecretPower.cs
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var type = GetTypeIdentifier(move.Battle);
+        if (type == null)
+            return;
+        move.User.SetTypes([type.Value]);
+    }
+
+    private static TypeIdentifier? GetTypeIdentifier(IBattle battle)
+    {
+        var typesLibrary = battle.Library.StaticLibrary.Types;
+        var environmentCategory = battle.GetEnvironmentCategory();
+        return environmentCategory switch
+        {
+            EnvironmentHelper.EnvironmentCategory.Electric when typesLibrary.TryGetTypeIdentifier("electric",
+                out var electricType) => electricType,
+            EnvironmentHelper.EnvironmentCategory.Fairy when typesLibrary.TryGetTypeIdentifier("fairy",
+                out var fairyType) => fairyType,
+            EnvironmentHelper.EnvironmentCategory.Grass when typesLibrary.TryGetTypeIdentifier("grass",
+                out var grassType) => grassType,
+            EnvironmentHelper.EnvironmentCategory.Psychic when typesLibrary.TryGetTypeIdentifier("psychic",
+                out var psychicType) => psychicType,
+            EnvironmentHelper.EnvironmentCategory.Rock when typesLibrary.TryGetTypeIdentifier("rock", out var rockType)
+                => rockType,
+            EnvironmentHelper.EnvironmentCategory.Ground when typesLibrary.TryGetTypeIdentifier("ground",
+                out var groundType) => groundType,
+            EnvironmentHelper.EnvironmentCategory.Ice when typesLibrary.TryGetTypeIdentifier("ice", out var iceType) =>
+                iceType,
+            EnvironmentHelper.EnvironmentCategory.Water when typesLibrary.TryGetTypeIdentifier("water",
+                out var waterType) => waterType,
+            EnvironmentHelper.EnvironmentCategory.Normal when typesLibrary.TryGetTypeIdentifier("normal",
+                out var normalType) => normalType,
+            _ => null,
+        };
+    }
 }