eryao/apps/lib/shared/widgets/notification/notification_detail_bottom_sheet.dart

import 'package:flutter/material.dart';

import '../../../features/notifications/data/models/notification_item.dart';
import '../../theme/design_tokens.dart';

class NotificationDetailBottomSheet extends StatefulWidget {
  const NotificationDetailBottomSheet({
    super.key,
    required this.item,
    required this.onMarkRead,
  });

  final NotificationItem item;
  final Future<void> Function() onMarkRead;

  @override
  State<NotificationDetailBottomSheet> createState() =>
      _NotificationDetailBottomSheetState();
}

class _NotificationDetailBottomSheetState
    extends State<NotificationDetailBottomSheet> {
  @override
  void initState() {
    super.initState();
    widget.onMarkRead();
  }

  @override
  Widget build(BuildContext context) {
    final colors = Theme.of(context).colorScheme;
    final textTheme = Theme.of(context).textTheme;

    return Container(
      height: MediaQuery.of(context).size.height * 0.5,
      decoration: BoxDecoration(
        color: colors.surface,
        borderRadius: const BorderRadius.vertical(
          top: Radius.circular(AppRadius.lg),
        ),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Center(
            child: Container(
              margin: const EdgeInsets.only(top: AppSpacing.sm),
              width: 40,
              height: 4,
              decoration: BoxDecoration(
                color: colors.outlineVariant,
                borderRadius: BorderRadius.circular(2),
              ),
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(AppSpacing.lg),
            child: Row(
              children: [
                Expanded(
                  child: Text(
                    widget.item.title,
                    style: textTheme.titleMedium?.copyWith(
                      fontWeight: FontWeight.w600,
                      color: colors.onSurface,
                    ),
                  ),
                ),
                IconButton(
                  onPressed: () => Navigator.pop(context),
                  icon: Icon(Icons.close, color: colors.onSurfaceVariant),
                ),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: AppSpacing.lg),
            child: Text(
              _formatTime(widget.item.createdAt),
              style: textTheme.labelSmall?.copyWith(color: colors.outline),
            ),
          ),
          const SizedBox(height: AppSpacing.md),
          Expanded(
            child: SingleChildScrollView(
              padding: const EdgeInsets.symmetric(horizontal: AppSpacing.lg),
              child: Text(
                widget.item.body,
                style: textTheme.bodyMedium?.copyWith(
                  color: colors.onSurfaceVariant,
                  height: 1.6,
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

  String _formatTime(DateTime dt) {
    final now = DateTime.now();
    final diff = now.difference(dt);
    if (diff.inMinutes < 1) return '刚刚';
    if (diff.inHours < 1) return '${diff.inMinutes}分钟前';
    if (diff.inDays < 1) return '${diff.inHours}小时前';
    if (diff.inDays < 30) return '${diff.inDays}天前';
    return '${dt.month}/${dt.day}';
  }
}

Future<void> showNotificationDetailBottomSheet({
  required BuildContext context,
  required NotificationItem item,
  required Future<void> Function() onMarkRead,
}) {
  return showModalBottomSheet<void>(
    context: context,
    isScrollControlled: true,
    backgroundColor: Colors.transparent,
    builder: (context) =>
        NotificationDetailBottomSheet(item: item, onMarkRead: onMarkRead),
  );
}