import 'package:flutter/material.dart';

import '../../../../common/theme/theme.dart';
import '../../../components/field/date_range_picker_field.dart';

class InventorySliverTabBarDelegate extends SliverPersistentHeaderDelegate {
  final TabBar tabBar;
  final DateTime? startDate;
  final DateTime? endDate;
  final Function(DateTime?, DateTime?)? onDateRangeChanged;

  InventorySliverTabBarDelegate({
    required this.tabBar,
    this.startDate,
    this.endDate,
    this.onDateRangeChanged,
  });

  @override
  double get minExtent => 120; // Increased height to accommodate date picker

  @override
  double get maxExtent => 120;

  @override
  Widget build(
    BuildContext context,
    double shrinkOffset,
    bool overlapsContent,
  ) {
    return Container(
      decoration: BoxDecoration(
        color: AppColor.surface,
        boxShadow: [
          BoxShadow(
            color: AppColor.black.withOpacity(0.05),
            blurRadius: 8,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 8),
      child: Column(
        children: [
          // Date Range Picker Section
          if (onDateRangeChanged != null)
            Expanded(
              child: DateRangePickerField(
                maxDate: DateTime.now(),
                startDate: startDate,
                endDate: endDate,
                onChanged: onDateRangeChanged!,
              ),
            ),
          const SizedBox(height: 8),
          // Tab Bar Section
          Container(
            decoration: BoxDecoration(
              color: AppColor.background,
              borderRadius: BorderRadius.circular(30),
              border: Border.all(
                color: AppColor.primary.withOpacity(0.1),
                width: 1,
              ),
            ),
            child: tabBar,
          ),
        ],
      ),
    );
  }

  @override
  bool shouldRebuild(InventorySliverTabBarDelegate oldDelegate) {
    return oldDelegate.startDate != startDate ||
        oldDelegate.endDate != endDate ||
        oldDelegate.tabBar != tabBar;
  }
}