Switching project to C# (because why not)

OpenSaveCloudClient/Models/Configuration.cs

@@ -0,0 +1,128 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Text.Json;
+
+namespace OpenSaveCloudClient.Models
+{
+    public class Configuration
+    {
+        private static Configuration? instance;
+        private Dictionary<string, string> _values;
+
+        private Configuration()
+        {
+            _values = new Dictionary<string, string>();
+            Load();
+        }
+
+        public static Configuration GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new Configuration();
+            }
+            return instance;
+        }
+
+        private void Load()
+        {
+            string appdata = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "osc");
+            string path = Path.Combine(appdata, "settings.json");
+            if (!File.Exists(appdata))
+            {
+                Directory.CreateDirectory(appdata);
+            }
+            if (File.Exists(path))
+            {
+                string json = File.ReadAllText(path);
+                var res = JsonSerializer.Deserialize<Dictionary<string, string>>(json);
+                if (res != null)
+                {
+                    _values = res;
+                }
+            }
+        }
+
+        private void Save()
+        {
+            string appdata = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "osc");
+            string path = Path.Combine(appdata, "settings.json");
+            if (!File.Exists(appdata))
+            {
+                Directory.CreateDirectory(appdata);
+            }
+            string json = JsonSerializer.Serialize<Dictionary<string, string>>(_values);
+            File.WriteAllText(path, json);
+        }
+
+        public string GetString(string key, string defaultValue)
+        {
+            try
+            {
+                return _values[key];
+            }
+            catch (KeyNotFoundException)
+            {
+                return defaultValue;
+            }
+        }
+
+        public int GetInt(string key, int defaultValue)
+        {
+            try
+            {
+                string value = _values[key];
+                if (!Int32.TryParse(value, out int result))
+                {
+                    throw new Exception("This value is not an Int32");
+                }
+                return result;
+            }
+            catch (KeyNotFoundException)
+            {
+                return defaultValue;
+            }
+        }
+
+        public Boolean GetBoolean(string key, bool defaultValue)
+        {
+            try
+            {
+                string value = _values[key];
+                if (!Boolean.TryParse(value, out bool result))
+                {
+                    throw new Exception("This value is not a Boolean");
+                }
+                return result;
+            } catch (KeyNotFoundException)
+            {
+                return defaultValue;
+            }
+        }
+
+        public void SetValue(string key, object? value, bool autoFlush = false)
+        {
+            if (value == null)
+            {
+                _values.Remove(key);
+            } 
+            else
+            {
+                _values[key] = value.ToString();
+            }
+            if (autoFlush)
+            {
+                Save();
+            }
+        }
+
+        public void Flush()
+        {
+            Save();
+        }
+
+    }
+}