✨ ActivityPub service impl basis

lib/services/activitypub_service.dart

@@ -0,0 +1,73 @@
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:island/models/activitypub.dart';
+import 'package:island/pods/network.dart';
+
+final activityPubServiceProvider = Provider<ActivityPubService>((ref) {
+  final dio = ref.watch(apiClientProvider);
+  return ActivityPubService(dio);
+});
+
+class ActivityPubService {
+  final Dio _client;
+
+  ActivityPubService(this._client);
+
+  Future<void> followRemoteUser(String targetActorUri) async {
+    final response = await _client.post(
+      '/sphere/activitypub/follow',
+      data: {'targetActorUri': targetActorUri},
+    );
+    final followResponse = SnActivityPubFollowResponse.fromJson(response.data);
+    if (!followResponse.success) {
+      throw Exception(followResponse.message);
+    }
+  }
+
+  Future<void> unfollowRemoteUser(String targetActorUri) async {
+    final response = await _client.post(
+      '/sphere/activitypub/unfollow',
+      data: {'targetActorUri': targetActorUri},
+    );
+    final followResponse = SnActivityPubFollowResponse.fromJson(response.data);
+    if (!followResponse.success) {
+      throw Exception(followResponse.message);
+    }
+  }
+
+  Future<List<SnActivityPubUser>> getFollowing({int limit = 50}) async {
+    final response = await _client.get(
+      '/sphere/activitypub/following',
+      queryParameters: {'limit': limit},
+    );
+    final users = (response.data as List<dynamic>)
+        .map((json) => SnActivityPubUser.fromJson(json))
+        .toList();
+    return users;
+  }
+
+  Future<List<SnActivityPubUser>> getFollowers({int limit = 50}) async {
+    final response = await _client.get(
+      '/sphere/activitypub/followers',
+      queryParameters: {'limit': limit},
+    );
+    final users = (response.data as List<dynamic>)
+        .map((json) => SnActivityPubUser.fromJson(json))
+        .toList();
+    return users;
+  }
+
+  Future<List<SnActivityPubActor>> searchUsers(
+    String query, {
+    int limit = 20,
+  }) async {
+    final response = await _client.get(
+      '/sphere/activitypub/search',
+      queryParameters: {'query': query, 'limit': limit},
+    );
+    final users = (response.data as List<dynamic>)
+        .map((json) => SnActivityPubActor.fromJson(json))
+        .toList();
+    return users;
+  }
+}