import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../../backend/backend.dart';
import '../../../core/utils/result.dart';

final postDetailsControllerProvider =
    FutureProvider.family<Post?, PostDetailsArgs>((ref, args) async {
  if (args.initialPost != null) return args.initialPost;
  final cached = await ref
      .watch(postRepositoryProvider)
      .getCachedPost(args.postId, args.providerId);
  if (cached is Success<Post?> && cached.data != null) return cached.data;
  final remote = await ref
      .watch(providerManagerProvider)
      .getPost(args.providerId, args.postId);
  return remote is Success<Post?> ? remote.data : null;
});

class PostDetailsArgs {
  const PostDetailsArgs({
    required this.providerId,
    required this.postId,
    this.initialPost,
  });

  final String providerId;
  final String postId;
  final Post? initialPost;

  @override
  bool operator ==(Object other) {
    return other is PostDetailsArgs &&
        other.providerId == providerId &&
        other.postId == postId &&
        other.initialPost == initialPost;
  }

  @override
  int get hashCode => Object.hash(providerId, postId, initialPost);
}