import 'dart:async';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../domain/entities/contribution.dart';
import '../../domain/entities/contribution_record.dart';
import '../../domain/usecases/contribution/get_user_contribution.dart';
import '../../domain/repositories/contribution_repository.dart';
import '../../core/di/injection.dart';

final getUserContributionUseCaseProvider = Provider<GetUserContribution>((ref) {
  return getIt<GetUserContribution>();
});

final contributionRepositoryProvider = Provider<ContributionRepository>((ref) {
  return getIt<ContributionRepository>();
});

final contributionProvider = FutureProvider.family<Contribution?, String>(
  (ref, accountSequence) async {
    // 空字符串不请求
    if (accountSequence.isEmpty) return null;

    final useCase = ref.watch(getUserContributionUseCaseProvider);
    final result = await useCase(accountSequence);

    // 保持 provider 活跃，避免重复请求
    ref.keepAlive();

    // 5 分钟后自动失效
    final timer = Timer(const Duration(minutes: 5), () {
      ref.invalidateSelf();
    });
    ref.onDispose(() => timer.cancel());

    return result.fold(
      (failure) => throw Exception(failure.message),
      (contribution) => contribution,
    );
  },
);

/// 贡献值记录请求参数
class ContributionRecordsParams {
  final String accountSequence;
  final int page;
  final int pageSize;

  const ContributionRecordsParams({
    required this.accountSequence,
    this.page = 1,
    this.pageSize = 10,
  });

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is ContributionRecordsParams &&
          runtimeType == other.runtimeType &&
          accountSequence == other.accountSequence &&
          page == other.page &&
          pageSize == other.pageSize;

  @override
  int get hashCode => accountSequence.hashCode ^ page.hashCode ^ pageSize.hashCode;
}

/// 贡献值记录 Provider
final contributionRecordsProvider = FutureProvider.family<ContributionRecordsPage?, ContributionRecordsParams>(
  (ref, params) async {
    // 空字符串不请求
    if (params.accountSequence.isEmpty) return null;

    final repository = ref.watch(contributionRepositoryProvider);
    final result = await repository.getContributionRecords(
      params.accountSequence,
      page: params.page,
      pageSize: params.pageSize,
    );

    // 保持 provider 活跃
    ref.keepAlive();

    // 5 分钟后自动失效
    final timer = Timer(const Duration(minutes: 5), () {
      ref.invalidateSelf();
    });
    ref.onDispose(() => timer.cancel());

    return result.fold(
      (failure) => throw Exception(failure.message),
      (records) => records,
    );
  },
);