fix: application data dir may not have been created before crash (sourcegit-scm#161)

Author: love-linger

src/App.axaml.cs

@@ -62,9 +62,7 @@ public static void Main(string[] args)
                 builder.Append(ex.StackTrace);
 
                 var time = DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss");
-                var file = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
-                    "SourceGit",
-                    $"crash_{time}.log");
+                var file = Path.Combine(Native.OS.DataDir, $"crash_{time}.log");
                 File.WriteAllText(file, builder.ToString());
             }
         }

src/Models/AvatarManager.cs

@@ -25,7 +25,7 @@ public static string SelectedServer
 
         static AvatarManager()
         {
-            _storePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "SourceGit", "avatars");
+            _storePath = Path.Combine(Native.OS.DataDir, "avatars");
             if (!Directory.Exists(_storePath))
                 Directory.CreateDirectory(_storePath);
 

src/Native/OS.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 
 using Avalonia;
 
@@ -20,6 +21,7 @@ public interface IBackend
             void OpenWithDefaultEditor(string file);
         }
 
+        public static readonly string DataDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "SourceGit");
         public static string GitExecutable { get; set; } = string.Empty;
         public static List<Models.ExternalTool> ExternalTools { get; set; } = new List<Models.ExternalTool>();
 
@@ -72,6 +74,9 @@ public static bool SetShell(Models.Shell shell)
 
         public static void SetupApp(AppBuilder builder)
         {
+            if (!Directory.Exists(DataDir))
+                Directory.CreateDirectory(DataDir);
+
             _backend.SetupApp(builder);
         }
 

src/ViewModels/Preference.cs

@@ -459,10 +459,6 @@ public static Repository AddRepository(string rootDir, string gitDir)
 
         public static void Save()
         {
-            var dir = Path.GetDirectoryName(_savePath);
-            if (!Directory.Exists(dir))
-                Directory.CreateDirectory(dir);
-
             var data = JsonSerializer.Serialize(_instance, JsonCodeGen.Default.Preference);
             File.WriteAllText(_savePath, data);
         }
@@ -515,10 +511,7 @@ private static bool RemoveNodeRecursive(RepositoryNode node, AvaloniaList<Reposi
         }
 
         private static Preference _instance = null;
-        private static readonly string _savePath = Path.Combine(
-            Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
-            "SourceGit",
-            "preference.json");
+        private static readonly string _savePath = Path.Combine(Native.OS.DataDir, "preference.json");
 
         private string _locale = "en_US";
         private string _theme = "Default";