import 'package:flisp_app/models/reminder.dart';
import 'package:flisp_app/widgets/common.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

Widget buildReminderList({
  required List<Reminder> reminders,
  required ValueChanged<Reminder> onEditReminder,
}) {
  return ListView.separated(
    itemCount: reminders.length,
    separatorBuilder: (context, index) => SizedBox(height: 8),
    itemBuilder: (context, index) {
      final reminder = reminders[index];
      return _buildReminderItem(reminder: reminder, onEdit: onEditReminder);
    },
  );
}

Widget _buildReminderItem({
  required Reminder reminder,
  required ValueChanged<Reminder> onEdit,
}) {
  return buildCard(
    child: ListTile(
      contentPadding: EdgeInsets.symmetric(horizontal: 8, vertical: 0),
      leading: Icon(Icons.notifications, color: Colors.blue),
      title: _buildReminderTitle(reminder),
      subtitle: _buildReminderSubtitle(reminder),
      onTap: () => onEdit(reminder),
    ),
  );
}

Widget _buildReminderTitle(Reminder reminder) {
  return Text(
    reminder.title,
    style: TextStyle(
      fontSize: 16,
      fontWeight: FontWeight.w600,
    ),
    maxLines: 1,
    overflow: TextOverflow.ellipsis,
  );
}

Widget _buildReminderSubtitle(Reminder reminder) {
  return Column(
    crossAxisAlignment: CrossAxisAlignment.start,
    children: [
      SizedBox(height: 4),
      Text(
        reminder.content,
        style: TextStyle(
          fontSize: 14,
          color: Colors.grey[700],
        ),
        maxLines: 2,
        overflow: TextOverflow.ellipsis,
      ),
      SizedBox(height: 8),
      Container(
        padding: EdgeInsets.symmetric(horizontal: 8, vertical: 4),
        decoration: BoxDecoration(
          color: Colors.blue[50],
          borderRadius: BorderRadius.circular(4),
        ),
        child: Text(
          DateFormat('MM月dd日 HH:mm').format(reminder.scheduledTime),
          style: TextStyle(
            fontSize: 12,
            color: Colors.blue[700],
            fontWeight: FontWeight.w500,
          ),
        ),
      ),
    ],
  );
}

// 空状态
Widget buildEmptyState() {
  return Center(
    child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Icon(Icons.task_alt, size: 80, color: Colors.orange.shade600),
        Text(
          '📋 还没有任何待办事项\n点击下方+号开始规划你的任务吧！',
          textAlign: TextAlign.center,
          style: TextStyle(color: Colors.orange.shade600),
        ),
      ],
    ),
  );
}