import 'package:flutter/material.dart';
import 'package:hive/hive.dart';

// flutter packages pub run build_runner build
part 'todo.g.dart';

@HiveType(typeId: 0)
class Todo extends HiveObject {
  @HiveField(0)
  late int id;

  @HiveField(1)
  late String title;

  @HiveField(2)
  late String content;

  @HiveField(3)
  late bool isCompleted;

  @HiveField(4)
  late DateTime? dueDate;

  @HiveField(5)
  late DateTime? scheduledTime;

  @HiveField(6)
  late int priorityIndex;

  @HiveField(7)
  late DateTime createTime;

  @HiveField(8)
  late DateTime updateTime;

  TodoPriority get priority => TodoPriority.values[priorityIndex];

  set priority(TodoPriority value) => priorityIndex = value.index;

  Todo({
    int? id,
    required this.title,
    this.content = '',
    this.isCompleted = false,
    this.dueDate,
    this.scheduledTime,
    TodoPriority priority = TodoPriority.medium,
    DateTime? createTime,
    DateTime? updateTime,
  }) {
    // 简单时间戳ID
    this.id = id ?? DateTime.now().millisecondsSinceEpoch ~/ 1000;
    this.priorityIndex = priority.index;
    this.createTime = createTime ?? DateTime.now();
    this.updateTime = updateTime ?? DateTime.now();
  }

  Todo copyWith({
    String? title,
    String? content,
    bool? isCompleted,
    DateTime? dueDate,
    DateTime? scheduledTime,
    TodoPriority? priority,
  }) {
    return Todo(
      id: id,
      title: title ?? this.title,
      content: content ?? this.content,
      isCompleted: isCompleted ?? this.isCompleted,
      dueDate: dueDate ?? this.dueDate,
      scheduledTime: scheduledTime ?? this.scheduledTime,
      priority: priority ?? this.priority,
      createTime: createTime,
      updateTime: DateTime.now(),
    );
  }

  static Todo getEmpty() {
    return Todo(
      id: DateTime.now().millisecondsSinceEpoch ~/ 1000,
      title: '',
      content: '',
      isCompleted: false,
      dueDate: null,
      scheduledTime: null,
      priority: TodoPriority.medium,
    );
  }
}

enum TodoPriority {
  low('低', Color(0xFF757575), Icons.low_priority),
  medium('中', Color(0xFFF57C00), Icons.flag),
  high('高', Color(0xFFD32F2F), Icons.warning);

  final String label;
  final Color color;
  final IconData icon;

  const TodoPriority(this.label, this.color, this.icon);
}

enum TodoTab {
  all('全部'),
  active('待完成'),
  completed('已完成'),
  today('今天');

  final String label;

  const TodoTab(this.label);
}