import 'package:flutter/material.dart';

class TodoItem {
  num id;
  String title;
  String content;
  bool isCompleted;
  DateTime? dueDate;
  TodoPriority priority;

  TodoItem({
    required this.id,
    required this.title,
    required this.content,
    this.isCompleted = false,
    this.dueDate,
    this.priority = TodoPriority.medium,
  });

  TodoItem copyWith({
    num? id,
    String? title,
    String? content,
    bool? isCompleted,
    DateTime? dueDate,
    TodoPriority? priority,
  }) {
    return TodoItem(
      id: id ?? this.id,
      title: title ?? this.title,
      content: content ?? this.content,
      isCompleted: isCompleted ?? this.isCompleted,
      dueDate: dueDate ?? this.dueDate,
      priority: priority ?? this.priority,
    );
  }

  static TodoItem getEmpty() {
    return TodoItem(
        id: 0,
        title: '',
        content: '',
        isCompleted: false,
        dueDate: 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);
}