refactor: extract "selects" out from widgets

Moving to separate providers keeps stuff DRY.
It could potentially also help perf, which is a win.

build.yaml

@@ -36,7 +36,7 @@ targets:
         generate_for:
           - lib/utils/*.dart
           - lib/features/*/data/*_repository.dart
-          - lib/features/*/application/*_service.dart
+          - lib/features/*/application/*.dart
       flutter_gen_runner:
         # configs for the flutter.assets generator
         generate_for:

lib/features/auth/application/auth_service.dart

@@ -1,9 +1,12 @@
 /// This library contains the authentication feature's business logic.
 library;
 
+import "dart:typed_data";
+
 import "package:riverpod_annotation/riverpod_annotation.dart";
 
 import "../data/auth_repository.dart";
+import "../domain/account_type.dart";
 import "../domain/pirate_auth_model.dart";
 import "../domain/pirate_user.dart";
 
@@ -47,3 +50,33 @@ PirateUser? user(UserRef ref) => ref.watch(
 
 /// The email address used in case things go wrong.
 const redactedEmail = "[email protected]";
+
+/// Get the current user's name.
+@riverpod
+String? name(NameRef ref) {
+  return ref.watch(userProvider.select((value) => value?.name));
+}
+
+/// Get the current user's email address.
+@riverpod
+String? email(EmailRef ref) {
+  return ref.watch(userProvider.select((value) => value?.email));
+}
+
+/// Get the current user's avatar.
+@riverpod
+Uint8List? avatar(AvatarRef ref) {
+  return ref.watch(userProvider.select((value) => value?.avatar));
+}
+
+/// Get the current user's account type.
+@riverpod
+AccountType? accountType(AccountTypeRef ref) {
+  return ref.watch(userProvider.select((value) => value?.accountType));
+}
+
+/// Get the current user's ID.
+@riverpod
+int? id(IdRef ref) {
+  return ref.watch(userProvider.select((value) => value?.id));
+}

lib/features/auth/data/auth_repository.dart

@@ -100,7 +100,7 @@ base class _AppwriteAuthRepository implements AuthRepository {
 AuthRepository auth(AuthRef ref) {
   final account = ref.watch(accountsProvider);
   final platform = ref.watch(currentPlatformProvider);
-  final avatar = ref.watch(avatarProvider.select((value) => value));
+  final avatar = ref.watch(avatarProvider);
 
   return _AppwriteAuthRepository(account, platform, avatar);
 }

lib/features/dashboard/application/dashboard_service.dart

@@ -15,15 +15,12 @@ part "dashboard_service.g.dart";
 class DashboardService extends _$DashboardService {
   @override
   DashboardModel build() {
-    final applets = ref.watch(_appletsProvider);
-
-    return DashboardModel(applets: applets);
+    return DashboardModel(applets: _applets);
   }
 }
 
 /// Get the list of applets.
-@riverpod
-List<Applet> _applets(_AppletsRef ref) {
+List<Applet> get _applets {
   // Add more buttons here
   // Ideas:
   //
@@ -54,3 +51,9 @@ List<Applet> _applets(_AppletsRef ref) {
     // ),
   ];
 }
+
+/// Get the list of applets.
+@riverpod
+List<Applet> applets(AppletsRef ref) => ref.watch(
+      dashboardServiceProvider.select((value) => value.applets),
+    );

lib/features/dashboard/presentation/dashboard_page/dashboard_page.dart

@@ -38,9 +38,7 @@ class _Applets extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final buttonsData = ref.watch(
-      dashboardServiceProvider.select((value) => value.applets),
-    );
+    final buttonsData = ref.watch(appletsProvider);
 
     return Expanded(
       child: Container(

lib/features/dashboard/presentation/wrapper_page/wrapper_page.dart

@@ -65,10 +65,9 @@ class _ExpandedWrapper extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final theme = Theme.of(context);
-    final (name, email, avatar) = ref.watch(
-      userProvider
-          .select((value) => (value?.name, value?.email, value?.avatar)),
-    );
+    final name = ref.watch(nameProvider);
+    final email = ref.watch(emailProvider);
+    final avatar = ref.watch(avatarProvider);
 
     return Scaffold(
       appBar: AppBar(

lib/features/pirate_coins/presentation/pirate_coins_page/pirate_coins_page.dart

@@ -24,9 +24,8 @@ class PirateCoinsPage extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final (accountType, id) = ref.watch(
-      userProvider.select((value) => (value?.accountType, value?.id)),
-    );
+    final accountType = ref.watch(accountTypeProvider);
+    final id = ref.watch(idProvider);
 
     final child = accountType == AccountType.student
         ? _StudentView(id: id ?? 0)

lib/features/pirate_coins/presentation/stats_page/stats_page.dart

@@ -7,7 +7,6 @@ import "package:hooks_riverpod/hooks_riverpod.dart";
 
 import "../../../../l10n/l10n.dart";
 import "../../../../widgets/big_card/big_card.dart";
-import "../../../auth/application/auth_service.dart";
 import "../../application/coins_service.dart";
 
 /// The page at `/pirate-coins/stats`.
@@ -18,8 +17,7 @@ class StatsPage extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final id = ref.watch(userProvider.select((value) => value?.id));
-    final data = id != null ? ref.watch(coinsServiceProvider(id)) : null;
+    final data = ref.watch(currentUserCoinsProvider);
     final l10n = context.l10n;
 
     return Center(
@@ -29,8 +27,8 @@ class StatsPage extends ConsumerWidget {
           Padding(
             padding: const EdgeInsets.all(8),
             child: switch (data) {
-              AsyncData(:final value) => value.coins.coins > 0
-                  ? BigCard(l10n.howManyCoins(value.coins.coins))
+              AsyncData(:final value) => (value?.coins.coins ?? 0) > 0
+                  ? BigCard(l10n.howManyCoins(value?.coins.coins ?? 0))
                   : BigCard(l10n.emptyReport),
               AsyncError(:final error) => BigCard(l10n.error("$error")),
               AsyncLoading() => Column(