fix resources

Author: Folleach

GeometryDashAPI.Tests/GameResourcesTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Threading.Tasks;
 using FluentAssertions;
 using GeometryDashAPI.Data;
 using GeometryDashAPI.Levels;
@@ -46,9 +47,10 @@ public void SetUp()
 
     [TestCase(OfficialLevel.TheChallenge)]
 
-    [TestCase(OfficialLevel.TheSevenSeas)]
-    [TestCase(OfficialLevel.VikingArena)]
-    [TestCase(OfficialLevel.AirborneRobots)]
+    // meltdown levels is not supported, we have problems with unzipping
+    // [TestCase(OfficialLevel.TheSevenSeas)]
+    // [TestCase(OfficialLevel.VikingArena)]
+    // [TestCase(OfficialLevel.AirborneRobots)]
 
     [TestCase(OfficialLevel.Payload)]
     [TestCase(OfficialLevel.BeastMode)]
@@ -60,12 +62,12 @@ public void SetUp()
     [TestCase(OfficialLevel.Embers)]
     [TestCase(OfficialLevel.Round1)]
     [TestCase(OfficialLevel.MonsterDanceOff)]
-    public void GetLevel_ShouldParseCorrect(OfficialLevel officialLevel)
+    public async Task GetLevel_ShouldParseCorrect(OfficialLevel officialLevel)
     {
         var resources = new GameResources(path);
 
         Level level = null;
-        Assert.DoesNotThrow(() => level = resources.GetLevel(officialLevel));
+        Assert.DoesNotThrow(() => level = resources.GetLevelAsync(officialLevel).GetAwaiter().GetResult());
 
         level.Should().NotBeNull();
         level.Blocks.Should().HaveCountGreaterThan(0);

GeometryDashAPI/Data/GameResources.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.IO;
+using System.Threading.Tasks;
 using GeometryDashAPI.Levels;
 using GeometryDashAPI.Serialization;
 
@@ -16,12 +18,16 @@ public GameResources(string path)
         this.path = path;
     }
 
-    public Level GetLevel(OfficialLevel officialLevel)
+    public async Task<Level> GetLevelAsync(OfficialLevel officialLevel)
     {
         var gameType = officialLevel.GetGameType();
-        var plist = levels.GetOrCreate(
-            gameType,
-            version => new Plist(File.ReadAllBytes(Path.Combine(path, GetLevelDataPath(version)))));
+        if (gameType == GameType.Meltdown)
+            throw new InvalidEnumArgumentException("meltdown levels is not supported");
+        if (!levels.TryGetValue(gameType, out var plist))
+        {
+            var bytes = await File.ReadAllBytesAsync(Path.Combine(path, GetLevelDataPath(gameType)));
+            levels.TryAdd(gameType, plist = new Plist(bytes));
+        }
 
         var content = plist[((int)officialLevel).ToString()].ToString();
         if (gameType == GameType.Default)

GeometryDashAPI/Extensions.cs

@@ -6,7 +6,7 @@ namespace GeometryDashAPI
 {
     public static class Extensions
     {
-        public static T GetAttributeOfSelected<T>(this Enum value) where T : Attribute
+        public static T? GetAttributeOfSelected<T>(this Enum value) where T : Attribute
         {
             var info = value.GetType().GetMember(value.ToString())[0];
             var attributes = info.GetCustomAttributes(typeof(T), false);