Initial commit

persistance/SnakeLevelLoader.cs

@@ -0,0 +1,28 @@
+using System.Collections.ObjectModel;
+using System.Text.Json;
+using Snake.Model;
+
+namespace Snake.Persistance;
+
+public class SnakeLevelLoader{
+
+    public readonly string SaveFileName;
+    public SnakeLevelLoader(string saveFileName){
+        SaveFileName = saveFileName;
+        if(!File.Exists(SaveFileName)){
+            throw new FileNotFoundException("Save file not found", SaveFileName);
+        }
+        string file_content = File.ReadAllText(SaveFileName);
+        _stored_levels = JsonSerializer.Deserialize<List<StoredSnakeLevel>>(file_content, new JsonSerializerOptions(){PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower})
+            ?? throw new JsonException("Failed to deserialize stored levels");
+    }
+
+    private List<StoredSnakeLevel> _stored_levels;
+    public ReadOnlyCollection<StoredSnakeLevel> StoredLevels => _stored_levels.AsReadOnly();
+
+    public SnakeLevel LoadLevel(StoredSnakeLevel level){
+        return new SnakeLevel(level.Size, 
+            level.Obstacles.Select(a => new Point(a[0], a[1])),
+            level.SnakeStartLength);
+    }
+}

persistance/StoredSnakeLevel.cs

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+namespace Snake.Persistance;
+
+public class StoredSnakeLevel{
+    public required string LevelName {get; init;}
+    public required int Size {get; init;}
+    public required int SnakeStartLength {get; init;}
+    public required int[][] Obstacles {get; init;}
+}

persistance/persistance.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\model\model.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>