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OwnChar.App.Desktop/Features/LoginProviders/JsonFileLoginProvider.cs

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+using OwnChar.App.Desktop.Api;
+using OwnChar.App.Desktop.Settings;
+using OwnChar.Data;
+using OwnChar.Data.Managers;
+using OwnChar.Data.Providers.JsonFile;
+using Pilz.Plugins.Advanced;
+using Telerik.WinControls.UI;
+
+namespace OwnChar.App.Desktop.Features.LoginProviders;
+
+internal class JsonFileLoginProvider() : LoginProvider(FeatureCodes.LoginProvider, "ownchar.jsonfile"), IPluginFeatureProvider<JsonFileLoginProvider>
+{
+    private const string defaultJsonFileName = "ownchar.db.json";
+
+    public static JsonFileLoginProvider Instance { get; } = new();
+
+    public override IDataManager GetDefault(IMainWindowApi api)
+    {
+        var settings = AppApi.Instance.Settings.Get<JsonFileLoginProviderSettings>();
+        return new DefaultDataManager(new JsonFileDataProvider(settings?.RecentFilePath ?? defaultJsonFileName));
+    }
+
+    public override void Configure(IMainWindowApi api, ref IDataManager? manager)
+    {
+        var settings = AppApi.Instance.Settings.Get<JsonFileLoginProviderSettings>();
+        using var ofd = new RadOpenFileDialog
+        {
+            Filter = "OwnChar Json database (*.json)|*.json"
+        };
+
+        if (manager is DefaultDataManager defaultManager && defaultManager.DataProvider is JsonFileDataProvider jsonFileDataProvider)
+            ofd.FileName = jsonFileDataProvider.JsonFilePath;
+        else
+            ofd.FileName = settings.RecentFilePath;
+
+        if (ofd.ShowDialog(api.Window) != System.Windows.Forms.DialogResult.OK)
+            return;
+
+        settings.RecentFilePath = ofd.FileName;
+
+        manager = new DefaultDataManager(new JsonFileDataProvider(ofd.FileName ?? defaultJsonFileName));
+    }
+}