fix: make sure the target directories exists before migartion

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Native/Linux.cs

@@ -62,9 +62,15 @@ public OS.Directories GetOrCreateDirectories()
             dirs.CacheDir = GetXdgDirectory("XDG_CACHE_HOME", Path.Combine(home, ".cache"), "SourceGit");
 
             // If the app basic dirs already exist, we can skip the migration step
-            if (Directory.Exists(dirs.ConfigDir))
+            if (Directory.Exists(dirs.ConfigDir) && Directory.Exists(dirs.CacheDir))
                 return dirs;
 
+            // Create the config and cache directories if they don't exist
+            if (!Directory.Exists(dirs.ConfigDir))
+                Directory.CreateDirectory(dirs.ConfigDir);
+            if (!Directory.Exists(dirs.CacheDir))
+                Directory.CreateDirectory(dirs.CacheDir);
+
             // Migrate legacy data dir: ~/.sourcegit to XDG standard directories
             var legacyDir = Path.Combine(home, ".sourcegit");
             if (Directory.Exists(legacyDir))
@@ -81,12 +87,6 @@ public OS.Directories GetOrCreateDirectories()
                 }
             }
 
-            // Create the config and cache directories if they don't exist
-            if (!Directory.Exists(dirs.ConfigDir))
-                Directory.CreateDirectory(dirs.ConfigDir);
-            if (!Directory.Exists(dirs.CacheDir))
-                Directory.CreateDirectory(dirs.CacheDir);
-
             return dirs;
         }