feat: improve patient flow and pricing workflow

lib/core/api/pocketbase_client.dart

@@ -1,25 +1,67 @@
+import 'dart:convert';
+
 import 'package:pocketbase/pocketbase.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 const _kAuthKey = 'pb_auth';
+const _kRememberSessionKey = 'remember_session';
 
 class PocketBaseClient {
-  PocketBaseClient._({required this.pb});
+  PocketBaseClient._({
+    required this.pb,
+    required SharedPreferences prefs,
+    required bool rememberSession,
+  })  : _prefs = prefs,
+        _rememberSession = rememberSession;
   static PocketBaseClient? _instance;
   static PocketBaseClient get instance => _instance!;
   final PocketBase pb;
+  final SharedPreferences _prefs;
+  bool _rememberSession;
+
+  bool get rememberSession => _rememberSession;
 
   static Future<void> init() async {
     final prefs = await SharedPreferences.getInstance();
+    final remember = prefs.getBool(_kRememberSessionKey) ?? true;
     final stored = prefs.getString(_kAuthKey);
 
     final store = AsyncAuthStore(
-      save: (String data) => prefs.setString(_kAuthKey, data),
-      initial: stored,
+      save: (String data) async {
+        final client = _instance;
+        if (client == null || client._rememberSession) {
+          await prefs.setString(_kAuthKey, data);
+          return;
+        }
+        await prefs.remove(_kAuthKey);
+      },
+      initial: remember ? stored : null,
     );
 
     _instance = PocketBaseClient._(
       pb: PocketBase('https://pocket.kovaksoft.com', authStore: store),
+      prefs: prefs,
+      rememberSession: remember,
     );
+
+    if (!remember && stored != null) {
+      await prefs.remove(_kAuthKey);
+    }
+  }
+
+  Future<void> setRememberSession(bool value) async {
+    _rememberSession = value;
+    await _prefs.setBool(_kRememberSessionKey, value);
+    if (!value) {
+      await _prefs.remove(_kAuthKey);
+    } else if (pb.authStore.isValid) {
+      await _prefs.setString(
+        _kAuthKey,
+        jsonEncode({
+          'token': pb.authStore.token,
+          'model': pb.authStore.record,
+        }),
+      );
+    }
   }
 }