import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../data/models/task.dart';
import 'api_client_provider.dart';

final tasksProvider =
    AsyncNotifierProvider<TasksNotifier, List<Task>>(TasksNotifier.new);

final projectTasksProvider =
    FutureProvider.family<List<Task>, int>((ref, projectId) {
  return ref.watch(tasksRepositoryProvider).getByProject(projectId);
});

class TasksNotifier extends AsyncNotifier<List<Task>> {
  @override
  Future<List<Task>> build() async {
    return ref.watch(tasksRepositoryProvider).getAll();
  }

  Future<void> refresh() async {
    final fresh = await ref.read(tasksRepositoryProvider).getAll();
    state = AsyncData(fresh);
  }

  Future<Task> create({
    required String title,
    String? description,
    required TaskStatus status,
    required TaskPriority priority,
    DateTime? dueDate,
    int? projectId,
  }) async {
    final task = await ref.read(tasksRepositoryProvider).create(
          title: title,
          description: description,
          status: status,
          priority: priority,
          dueDate: dueDate,
          projectId: projectId,
        );
    state = AsyncData([...state.value ?? [], task]);
    return task;
  }

  Future<Task> updateTask(int id, Map<String, dynamic> fields) async {
    final updated = await ref.read(tasksRepositoryProvider).update(id, fields);
    state = AsyncData([
      for (final t in state.value ?? [])
        if (t.id == id) updated else t,
    ]);
    return updated;
  }

  Future<void> delete(int id) async {
    await ref.read(tasksRepositoryProvider).delete(id);
    state = AsyncData([
      for (final t in state.value ?? [])
        if (t.id != id) t,
    ]);
  }
}