Fix storage save directory issue

Flow.Launcher.Infrastructure/Storage/BinaryStorage.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using System.Threading.Tasks;
 using Flow.Launcher.Infrastructure.Logger;
 using Flow.Launcher.Infrastructure.UserSettings;
@@ -40,6 +41,16 @@ public BinaryStorage(string filename)
             FilePath = Path.Combine(DirectoryPath, $"{filename}{FileSuffix}");
         }
 
+        // Let the old Program plugin get this constructor
+        [Obsolete("This constructor is obsolete. Use BinaryStorage(string filename) instead.")]
+        public BinaryStorage(string filename, string directoryPath = null!)
+        {
+            directoryPath ??= DataLocation.CacheDirectory;
+            FilesFolders.ValidateDirectory(directoryPath);
+
+            FilePath = Path.Combine(directoryPath, $"{filename}{FileSuffix}");
+        }
+
         public async ValueTask<T> TryLoadAsync(T defaultData)
         {
             if (Data != null) return Data;
@@ -82,8 +93,10 @@ private static async ValueTask<T> DeserializeAsync(Stream stream, T defaultData)
 
         public void Save()
         {
-            var serialized = MemoryPackSerializer.Serialize(Data);
+            // User may delete the directory, so we need to check it
+            FilesFolders.ValidateDirectory(DirectoryPath);
 
+            var serialized = MemoryPackSerializer.Serialize(Data);
             File.WriteAllBytes(FilePath, serialized);
         }
 
@@ -103,6 +116,9 @@ public void ClearData()
         // so we need to pass it to SaveAsync
         public async ValueTask SaveAsync(T data)
         {
+            // User may delete the directory, so we need to check it
+            FilesFolders.ValidateDirectory(DirectoryPath);
+
             await using var stream = new FileStream(FilePath, FileMode.Create);
             await MemoryPackSerializer.SerializeAsync(stream, data);
         }

Flow.Launcher.Infrastructure/Storage/JsonStorage.cs

@@ -183,7 +183,10 @@ private void BackupOriginFile()
 
         public void Save()
         {
-            string serialized = JsonSerializer.Serialize(Data,
+            // User may delete the directory, so we need to check it
+            FilesFolders.ValidateDirectory(DirectoryPath);
+
+            var serialized = JsonSerializer.Serialize(Data,
                 new JsonSerializerOptions { WriteIndented = true });
 
             File.WriteAllText(TempFilePath, serialized);
@@ -193,6 +196,9 @@ public void Save()
 
         public async Task SaveAsync()
         {
+            // User may delete the directory, so we need to check it
+            FilesFolders.ValidateDirectory(DirectoryPath);
+
             await using var tempOutput = File.OpenWrite(TempFilePath);
             await JsonSerializer.SerializeAsync(tempOutput, Data,
                 new JsonSerializerOptions { WriteIndented = true });