import 'package:aioa_mobile/core/auth/authenticated_http_client.dart';
import 'package:aioa_mobile/core/config/runtime_config.dart';
import 'package:aioa_mobile/features/tasks/data/approval_task_repository.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

final approvalTaskRepositoryProvider = Provider<ApprovalTaskRepository>(
  (ref) => ApprovalTaskRepository(
    client: ref.watch(authenticatedHttpClientProvider),
    baseUrl: RuntimeConfig.apiBaseUrl,
  ),
);

final approvalTaskProvider =
    AsyncNotifierProvider<ApprovalTaskController, List<ApprovalTaskItem>>(
      ApprovalTaskController.new,
    );

class ApprovalTaskController extends AsyncNotifier<List<ApprovalTaskItem>> {
  @override
  Future<List<ApprovalTaskItem>> build() =>
      ref.read(approvalTaskRepositoryProvider).list();

  Future<void> refresh() async {
    state = const AsyncLoading();
    state = await AsyncValue.guard(
      () => ref.read(approvalTaskRepositoryProvider).list(),
    );
  }

  Future<String?> decide({
    required ApprovalTaskItem task,
    required bool approved,
    String? comment,
  }) async {
    try {
      await ref
          .read(approvalTaskRepositoryProvider)
          .decide(task: task, approved: approved, comment: comment);
      state = AsyncData([
        for (final item in state.value ?? const <ApprovalTaskItem>[])
          if (item.id != task.id) item,
      ]);
      return null;
    } on ApprovalTaskException catch (error) {
      return error.message;
    }
  }
}