import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../core/theme/app_colors.dart';
import '../../../core/theme/app_dimens.dart';
import '../../../core/utils/extensions.dart';
import '../../../core/utils/formatters.dart';
import '../../../core/widgets/status_pill.dart';
import '../../customer/widgets/customer_capture_sheet.dart';
import '../providers/cart_controller.dart';

/// Strip above the product grid showing who the sale belongs to.
class CustomerBar extends ConsumerWidget {
  const CustomerBar({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final customer = ref.watch(
      cartControllerProvider.select((cart) => cart.customer),
    );

    return Container(
      // A hard height clipped the subtitle once it wrapped. Minimum height
      // keeps the strip its usual size but lets it grow if it must.
      constraints: const BoxConstraints(
        minHeight: AppSizes.customerBarHeight,
      ),
      color: AppColors.surface,
      padding: const EdgeInsets.symmetric(
        horizontal: AppSpacing.xl,
        vertical: AppSpacing.sm,
      ),
      child: Row(children: [
        CircleAvatar(
          radius: 20,
          backgroundColor: customer == null
              ? AppColors.border
              : AppColors.primarySurface,
          child: customer == null
              ? const Icon(Icons.directions_walk_rounded,
                  size: 20, color: AppColors.textSecondary,)
              : Text(
                  Formatters.initials(customer.name),
                  style: const TextStyle(
                    color: AppColors.primary,
                    fontSize: 14,
                    fontWeight: FontWeight.w700,
                  ),
                ),
        ),
        const SizedBox(width: AppSpacing.md),
        Flexible(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(mainAxisSize: MainAxisSize.min, children: [
                Flexible(
                  child: Text(
                    customer?.name ?? 'Walk-in Customer',
                    style: context.text.titleMedium,
                    overflow: TextOverflow.ellipsis,
                  ),
                ),
                if (customer != null) ...[
                  const SizedBox(width: AppSpacing.sm),
                  StatusPill.tier(customer.tier, dense: true),
                ],
              ],),
              if (customer != null)
                Text(
                  '${Formatters.mobile(customer.mobile)}  ·  '
                  '${customer.loyaltyPoints} pts',
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: context.text.bodySmall,
                )
              else
                Text(
                  'No loyalty tracking for this sale',
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: context.text.bodySmall,
                ),
            ],
          ),
        ),
        const Spacer(),
        if (customer != null)
          TextButton.icon(
            onPressed: () =>
                ref.read(cartControllerProvider.notifier).attachCustomer(null),
            icon: const Icon(Icons.person_off_outlined, size: 17),
            label: const Text('Detach'),
            style: TextButton.styleFrom(
                foregroundColor: AppColors.textSecondary,),
          ),
        const SizedBox(width: AppSpacing.sm),
        OutlinedButton.icon(
          onPressed: () => showCustomerCaptureSheet(context),
          icon: const Icon(Icons.sync_alt_rounded, size: 17),
          label: Text(customer == null ? 'Add Customer' : 'Change'),
          style: OutlinedButton.styleFrom(
            minimumSize: const Size(0, 44),
            padding: const EdgeInsets.symmetric(horizontal: AppSpacing.lg),
          ),
        ),
      ],),
    );
  }
}