migrate: riverpod + freezed (#870)

lib/data/provider/providers.dart

@@ -0,0 +1,82 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'package:server_box/data/provider/app.dart';
+import 'package:server_box/data/provider/private_key.dart';
+import 'package:server_box/data/provider/server.dart';
+import 'package:server_box/data/provider/sftp.dart';
+import 'package:server_box/data/provider/snippet.dart';
+
+/// !library;
+/// ref.useNotifier, ref.readProvider, ref.watchProvider
+/// 
+/// Usage:
+/// - `providers.read.server` -> `ref.read(serversNotifierProvider)`
+/// - `providers.use.snippet` -> `ref.read(snippetsNotifierProvider.notifier)`
+
+extension RiverpodNotifiers on ConsumerState {
+  T useNotifier<T extends Notifier<Object?>>(NotifierProvider<T, Object?> provider) {
+    return ref.read(provider.notifier);
+  }
+
+  T readProvider<T>(ProviderBase<T> provider) {
+    return ref.read(provider);
+  }
+
+  T watchProvider<T>(ProviderBase<T> provider) {
+    return ref.watch(provider);
+  }
+
+  MyProviders get providers => MyProviders(ref);
+}
+
+final class MyProviders {
+  final WidgetRef ref;
+  const MyProviders(this.ref);
+
+  ReadMyProvider get read => ReadMyProvider(ref);
+  WatchMyProvider get watch => WatchMyProvider(ref);
+  UseNotifierMyProvider get use => UseNotifierMyProvider(ref);
+}
+
+final class ReadMyProvider {
+  final WidgetRef ref;
+  const ReadMyProvider(this.ref);
+
+  T call<T>(ProviderBase<T> provider) => ref.read(provider);
+  
+  // Specific provider getters
+  ServersState get server => ref.read(serverNotifierProvider);
+  SnippetState get snippet => ref.read(snippetNotifierProvider);
+  AppState get app => ref.read(appStatesProvider);
+  PrivateKeyState get privateKey => ref.read(privateKeyNotifierProvider);
+  SftpState get sftp => ref.read(sftpNotifierProvider);
+}
+
+final class WatchMyProvider {
+  final WidgetRef ref;
+  const WatchMyProvider(this.ref);
+
+  T call<T>(ProviderBase<T> provider) => ref.watch(provider);
+  
+  // Specific provider getters
+  ServersState get server => ref.watch(serverNotifierProvider);
+  SnippetState get snippet => ref.watch(snippetNotifierProvider);
+  AppState get app => ref.watch(appStatesProvider);
+  PrivateKeyState get privateKey => ref.watch(privateKeyNotifierProvider);
+  SftpState get sftp => ref.watch(sftpNotifierProvider);
+}
+
+final class UseNotifierMyProvider {
+  final WidgetRef ref;
+  const UseNotifierMyProvider(this.ref);
+
+  T call<T extends Notifier<Object?>>(NotifierProvider<T, Object?> provider) =>
+      ref.read(provider.notifier);
+  
+  // Specific provider notifier getters
+  ServerNotifier get server => ref.read(serverNotifierProvider.notifier);
+  SnippetNotifier get snippet => ref.read(snippetNotifierProvider.notifier);
+  AppStates get app => ref.read(appStatesProvider.notifier);
+  PrivateKeyNotifier get privateKey => ref.read(privateKeyNotifierProvider.notifier);
+  SftpNotifier get sftp => ref.read(sftpNotifierProvider.notifier);
+}