✨ Subscription

lib/screens/post/post_publisher.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+import 'dart:developer';
 import 'dart:ui';
 
 import 'package:easy_localization/easy_localization.dart';
@@ -51,6 +53,63 @@ class _PostPublisherScreenState extends State<PostPublisherScreen> {
     }
   }
 
+  bool _isSubscribing = false;
+  SnSubscription? _subscription;
+
+  Future<void> _fetchSubscription() async {
+    try {
+      setState(() => _isSubscribing = true);
+
+      final sn = context.read<SnNetworkProvider>();
+      final resp = await sn.client.get(
+        '/cgi/co/subscriptions/users/${_publisher!.id}',
+      );
+      if (!mounted) return;
+      _subscription = SnSubscription.fromJson(resp.data);
+    } catch (err) {
+      if (!mounted) return;
+      context.showErrorDialog(err);
+    } finally {
+      setState(() => _isSubscribing = false);
+    }
+  }
+
+  Future<void> _toggleSubscription() async {
+    if (_subscription == null) {
+      try {
+        setState(() => _isSubscribing = true);
+
+        final sn = context.read<SnNetworkProvider>();
+        final resp = await sn.client.post(
+          '/cgi/co/subscriptions/users/${_publisher!.id}',
+        );
+        if (!mounted) return;
+        _subscription = SnSubscription.fromJson(resp.data);
+      } catch (err) {
+        if (!mounted) return;
+        context.showErrorDialog(err);
+      } finally {
+        setState(() => _isSubscribing = false);
+      }
+    } else {
+      try {
+        setState(() => _isSubscribing = true);
+
+        final sn = context.read<SnNetworkProvider>();
+        await sn.client.delete(
+          '/cgi/co/subscriptions/users/${_publisher!.id}',
+        );
+        if (!mounted) return;
+        _subscription = null;
+      } catch (err) {
+        if (!mounted) return;
+        context.showErrorDialog(err);
+      } finally {
+        setState(() => _isSubscribing = false);
+      }
+    }
+  }
+
   double _appBarBlur = 0.0;
 
   late final _appBarWidth = MediaQuery.of(context).size.width;
@@ -95,6 +154,7 @@ class _PostPublisherScreenState extends State<PostPublisherScreen> {
     super.initState();
     _fetchPublisher().then((_) {
       _fetchPosts();
+      _fetchSubscription();
     });
     _scrollController.addListener(_updateAppBarBlur);
   }
@@ -233,11 +293,27 @@ class _PostPublisherScreenState extends State<PostPublisherScreen> {
                                       ],
                                     ),
                                   ),
-                                  ElevatedButton(
+                                  if (_subscription == null)
+                                    ElevatedButton.icon(
                                       style: ButtonStyle(
-                                        elevation: WidgetStatePropertyAll(0)),
+                                        elevation: WidgetStatePropertyAll(0),
-                                    onPressed: () {},
+                                      ),
-                                    child: Text('subscribe').tr(),
+                                      onPressed: _isSubscribing
+                                          ? null
+                                          : _toggleSubscription,
+                                      label: Text('subscribe').tr(),
+                                      icon: const Icon(Symbols.add),
+                                    )
+                                  else
+                                    OutlinedButton.icon(
+                                      style: ButtonStyle(
+                                        elevation: WidgetStatePropertyAll(0),
+                                      ),
+                                      onPressed: _isSubscribing
+                                          ? null
+                                          : _toggleSubscription,
+                                      label: Text('unsubscribe').tr(),
+                                      icon: const Icon(Symbols.remove),
                                     ),
                                 ],
                               ).padding(right: 8),

lib/types/post.dart

@@ -125,3 +125,18 @@ class SnPublisher with _$SnPublisher {
   factory SnPublisher.fromJson(Map<String, Object?> json) =>
       _$SnPublisherFromJson(json);
 }
+
+@freezed
+class SnSubscription with _$SnSubscription {
+  const factory SnSubscription({
+    required int id,
+    required DateTime createdAt,
+    required DateTime updatedAt,
+    required DateTime? deletedAt,
+    required int followerId,
+    required int accountId,
+  }) = _SnSubscription;
+
+  factory SnSubscription.fromJson(Map<String, Object?> json) =>
+      _$SnSubscriptionFromJson(json);
+}

lib/types/post.freezed.dart

@@ -2326,3 +2326,263 @@ abstract class _SnPublisher implements SnPublisher {
   _$$SnPublisherImplCopyWith<_$SnPublisherImpl> get copyWith =>
       throw _privateConstructorUsedError;
 }
+
+SnSubscription _$SnSubscriptionFromJson(Map<String, dynamic> json) {
+  return _SnSubscription.fromJson(json);
+}
+
+/// @nodoc
+mixin _$SnSubscription {
+  int get id => throw _privateConstructorUsedError;
+  DateTime get createdAt => throw _privateConstructorUsedError;
+  DateTime get updatedAt => throw _privateConstructorUsedError;
+  DateTime? get deletedAt => throw _privateConstructorUsedError;
+  int get followerId => throw _privateConstructorUsedError;
+  int get accountId => throw _privateConstructorUsedError;
+
+  /// Serializes this SnSubscription to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of SnSubscription
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $SnSubscriptionCopyWith<SnSubscription> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $SnSubscriptionCopyWith<$Res> {
+  factory $SnSubscriptionCopyWith(
+          SnSubscription value, $Res Function(SnSubscription) then) =
+      _$SnSubscriptionCopyWithImpl<$Res, SnSubscription>;
+  @useResult
+  $Res call(
+      {int id,
+      DateTime createdAt,
+      DateTime updatedAt,
+      DateTime? deletedAt,
+      int followerId,
+      int accountId});
+}
+
+/// @nodoc
+class _$SnSubscriptionCopyWithImpl<$Res, $Val extends SnSubscription>
+    implements $SnSubscriptionCopyWith<$Res> {
+  _$SnSubscriptionCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of SnSubscription
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? createdAt = null,
+    Object? updatedAt = null,
+    Object? deletedAt = freezed,
+    Object? followerId = null,
+    Object? accountId = null,
+  }) {
+    return _then(_value.copyWith(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      createdAt: null == createdAt
+          ? _value.createdAt
+          : createdAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      updatedAt: null == updatedAt
+          ? _value.updatedAt
+          : updatedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      deletedAt: freezed == deletedAt
+          ? _value.deletedAt
+          : deletedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime?,
+      followerId: null == followerId
+          ? _value.followerId
+          : followerId // ignore: cast_nullable_to_non_nullable
+              as int,
+      accountId: null == accountId
+          ? _value.accountId
+          : accountId // ignore: cast_nullable_to_non_nullable
+              as int,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$SnSubscriptionImplCopyWith<$Res>
+    implements $SnSubscriptionCopyWith<$Res> {
+  factory _$$SnSubscriptionImplCopyWith(_$SnSubscriptionImpl value,
+          $Res Function(_$SnSubscriptionImpl) then) =
+      __$$SnSubscriptionImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {int id,
+      DateTime createdAt,
+      DateTime updatedAt,
+      DateTime? deletedAt,
+      int followerId,
+      int accountId});
+}
+
+/// @nodoc
+class __$$SnSubscriptionImplCopyWithImpl<$Res>
+    extends _$SnSubscriptionCopyWithImpl<$Res, _$SnSubscriptionImpl>
+    implements _$$SnSubscriptionImplCopyWith<$Res> {
+  __$$SnSubscriptionImplCopyWithImpl(
+      _$SnSubscriptionImpl _value, $Res Function(_$SnSubscriptionImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of SnSubscription
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? createdAt = null,
+    Object? updatedAt = null,
+    Object? deletedAt = freezed,
+    Object? followerId = null,
+    Object? accountId = null,
+  }) {
+    return _then(_$SnSubscriptionImpl(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      createdAt: null == createdAt
+          ? _value.createdAt
+          : createdAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      updatedAt: null == updatedAt
+          ? _value.updatedAt
+          : updatedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      deletedAt: freezed == deletedAt
+          ? _value.deletedAt
+          : deletedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime?,
+      followerId: null == followerId
+          ? _value.followerId
+          : followerId // ignore: cast_nullable_to_non_nullable
+              as int,
+      accountId: null == accountId
+          ? _value.accountId
+          : accountId // ignore: cast_nullable_to_non_nullable
+              as int,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$SnSubscriptionImpl implements _SnSubscription {
+  const _$SnSubscriptionImpl(
+      {required this.id,
+      required this.createdAt,
+      required this.updatedAt,
+      required this.deletedAt,
+      required this.followerId,
+      required this.accountId});
+
+  factory _$SnSubscriptionImpl.fromJson(Map<String, dynamic> json) =>
+      _$$SnSubscriptionImplFromJson(json);
+
+  @override
+  final int id;
+  @override
+  final DateTime createdAt;
+  @override
+  final DateTime updatedAt;
+  @override
+  final DateTime? deletedAt;
+  @override
+  final int followerId;
+  @override
+  final int accountId;
+
+  @override
+  String toString() {
+    return 'SnSubscription(id: $id, createdAt: $createdAt, updatedAt: $updatedAt, deletedAt: $deletedAt, followerId: $followerId, accountId: $accountId)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$SnSubscriptionImpl &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.createdAt, createdAt) ||
+                other.createdAt == createdAt) &&
+            (identical(other.updatedAt, updatedAt) ||
+                other.updatedAt == updatedAt) &&
+            (identical(other.deletedAt, deletedAt) ||
+                other.deletedAt == deletedAt) &&
+            (identical(other.followerId, followerId) ||
+                other.followerId == followerId) &&
+            (identical(other.accountId, accountId) ||
+                other.accountId == accountId));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(
+      runtimeType, id, createdAt, updatedAt, deletedAt, followerId, accountId);
+
+  /// Create a copy of SnSubscription
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$SnSubscriptionImplCopyWith<_$SnSubscriptionImpl> get copyWith =>
+      __$$SnSubscriptionImplCopyWithImpl<_$SnSubscriptionImpl>(
+          this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$SnSubscriptionImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _SnSubscription implements SnSubscription {
+  const factory _SnSubscription(
+      {required final int id,
+      required final DateTime createdAt,
+      required final DateTime updatedAt,
+      required final DateTime? deletedAt,
+      required final int followerId,
+      required final int accountId}) = _$SnSubscriptionImpl;
+
+  factory _SnSubscription.fromJson(Map<String, dynamic> json) =
+      _$SnSubscriptionImpl.fromJson;
+
+  @override
+  int get id;
+  @override
+  DateTime get createdAt;
+  @override
+  DateTime get updatedAt;
+  @override
+  DateTime? get deletedAt;
+  @override
+  int get followerId;
+  @override
+  int get accountId;
+
+  /// Create a copy of SnSubscription
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$SnSubscriptionImplCopyWith<_$SnSubscriptionImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/types/post.g.dart

@@ -218,3 +218,26 @@ Map<String, dynamic> _$$SnPublisherImplToJson(_$SnPublisherImpl instance) =>
       'realm_id': instance.realmId,
       'account_id': instance.accountId,
     };
+
+_$SnSubscriptionImpl _$$SnSubscriptionImplFromJson(Map<String, dynamic> json) =>
+    _$SnSubscriptionImpl(
+      id: (json['id'] as num).toInt(),
+      createdAt: DateTime.parse(json['created_at'] as String),
+      updatedAt: DateTime.parse(json['updated_at'] as String),
+      deletedAt: json['deleted_at'] == null
+          ? null
+          : DateTime.parse(json['deleted_at'] as String),
+      followerId: (json['follower_id'] as num).toInt(),
+      accountId: (json['account_id'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$$SnSubscriptionImplToJson(
+        _$SnSubscriptionImpl instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'created_at': instance.createdAt.toIso8601String(),
+      'updated_at': instance.updatedAt.toIso8601String(),
+      'deleted_at': instance.deletedAt?.toIso8601String(),
+      'follower_id': instance.followerId,
+      'account_id': instance.accountId,
+    };