Add Context.ApplicationDataDirectory

Author: Aeliux

src/CommonTK.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>True</GenerateAssemblyInfo>
     <Deterministic>True</Deterministic>
     <AssemblyName>SAPTeam.CommonTK</AssemblyName>
@@ -46,11 +46,10 @@ For Getting started with this library you can visit our github page.</Descriptio
   <ItemGroup>
   	<PackageReference Include="Nerdbank.GitVersioning" Condition="!Exists('packages.config')">
       <PrivateAssets>all</PrivateAssets>
-      <Version>3.6.143</Version>
+      <Version>3.7.115</Version>
     </PackageReference>
-    <PackageReference Include="DotNet.ReproducibleBuilds" Version="1.1.1" PrivateAssets="All" />
-    <PackageReference Include="System.Text.Json" Version="8.0.4" Condition=" '$(TargetFramework)' == 'netstandard2.0'" />
-    <PackageReference Include="System.Text.Json" Version="6.0.9" Condition=" '$(TargetFramework)' == 'net461'" />
+    <PackageReference Include="DotNet.ReproducibleBuilds" Version="1.2.25" PrivateAssets="All" />
+    <PackageReference Include="System.Text.Json" Version="9.0.4" Condition=" '$(TargetFramework)' == 'netstandard2.0'" />
   </ItemGroup>
 
   <ItemGroup>

src/Environment.cs

@@ -90,5 +90,35 @@ public static string ExecutablePath
         /// Gets the root application directory.
         /// </summary>
         public static string ApplicationDirectory => AppDomain.CurrentDomain.BaseDirectory;
+
+        /// <summary>
+        /// Gets the path to the application data directory based on the operating system.
+        /// </summary>
+        /// <param name="appName">
+        /// The name of the application. If not provided, the default application name will be used.
+        /// </param>
+        /// <returns>
+        /// The path to the application data directory based on the operating system.
+        /// </returns>
+        public static string ApplicationDataDirectory(string appName = null)
+        {
+            if (string.IsNullOrEmpty(appName))
+            {
+                appName = ApplicationTitle;
+            }
+
+            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                appName = appName.ToLowerInvariant();
+            }
+
+            string localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+            string unixHome = Environment.GetEnvironmentVariable("HOME") ?? Path.GetFullPath(".");
+            string altAppData = Path.Combine(unixHome, ".config");
+
+            var path = Path.Combine(string.IsNullOrEmpty(localAppData) ? altAppData : localAppData, appName);
+
+            return path;
+        }
     }
 }

src/JsonWorker.cs

@@ -18,7 +18,7 @@ public class JsonWorker
         /// Initializes a new instance of the <see cref="JsonWorker"/> class.
         /// </summary>
         /// <param name="options">
-        /// The serializer options. (used in netstandard2.0 or net461 targets)
+        /// The serializer options. (used in netstandard2.0 targets)
         /// </param>
         /// <param name="context">
         /// The source-generated serializer context. (used in net6.0+ targets)