import 'package:business_panel/core/config/app_colors.dart';
import 'package:business_panel/domain/entities/discount_entity.dart';
import 'package:business_panel/gen/assets.gen.dart';
import 'package:business_panel/presentation/discount_management/bloc/discount_management_bloc.dart';
import 'package:business_panel/presentation/pages/add_discount_page.dart';
import 'package:business_panel/presentation/pages/sales_analysis_page.dart';
import 'package:business_panel/presentation/widgets/delete_confirmation_dialog.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_svg/svg.dart';
import 'package:persian_datetime_picker/persian_datetime_picker.dart';
import 'package:slide_countdown/slide_countdown.dart';

class AnalyticsDiscountCard extends StatelessWidget {
  final DiscountEntity discount;

  const AnalyticsDiscountCard({super.key, required this.discount});

  @override
  Widget build(BuildContext context) {
    final remaining = discount.endDate != null
        ? discount.endDate!.difference(DateTime.now())
        : const Duration(seconds: -1);

    final bool isExpired = remaining.isNegative;

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        if (!isExpired) _buildActionButtons(context),
        const SizedBox(
          height: 5,
        ),
        Card(
          color: Colors.white,
          elevation: 0,
          margin: const EdgeInsets.symmetric(vertical: 8),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(25),
            side: BorderSide(color: Colors.grey.shade300, width: 1),
          ),
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                _buildProductImage(),
                const SizedBox(width: 16),
                _buildCardDetails(context, remaining),
              ],
            ),
          ),
        ),
      ],
    );
  }

  Widget _buildProductImage() {
    return ClipRRect(
      borderRadius: BorderRadius.circular(15),
      child: (discount.images.isNotEmpty && discount.images.first.isNotEmpty)
          ? Image.network(
              discount.images.first,
              width: 100,
              height: 100,
              fit: BoxFit.cover,
              errorBuilder: (context, error, stackTrace) =>
                  _buildImagePlaceholder(),
            )
          : _buildImagePlaceholder(),
    );
  }

  Widget _buildImagePlaceholder() {
    return Container(
      width: 100,
      height: 100,
      decoration: BoxDecoration(
        color: Colors.grey[200],
        borderRadius: BorderRadius.circular(15),
      ),
      child: const Icon(Icons.store, color: Colors.grey, size: 50),
    );
  }

  Widget _buildCardDetails(BuildContext context, Duration remaining) {
    return Expanded(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          const SizedBox(height: 5),
          _buildInfoRow(
              icon: Assets.icons.shoppingCart,
              text: discount.name,
              textColor: Colors.grey.shade600),
          const SizedBox(height: 5),
          if (discount.endDate == null)
            _buildStatusText('تاریخ نامعتبر', Colors.orange)
          else if (remaining.isNegative)
            _buildExpiredDateRange()
          else
            _buildCountdownSection(remaining),
          const SizedBox(height: 10),
          InkWell(
            onTap: () {
              Navigator.of(context).push(
                MaterialPageRoute(
                  builder: (_) => SalesAnalysisPage(discount: discount),
                ),
              );
            },
            child: _buildInfoRow(
              icon: Assets.icons.chart,
              text: "آنالیز فروش",
              textColor: AppColors.active,
              isBold: true,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildInfoRow(
      {required String icon,
      required String text,
      Color? textColor,
      bool isBold = false}) {
    return Row(
      children: [
        SvgPicture.asset(icon, width: 18, color: Colors.grey.shade700),
        const SizedBox(width: 10),
        Expanded(
          child: Text(
            text,
            style: TextStyle(
              fontSize: 17,
              color: textColor ?? Colors.black,
              fontWeight: FontWeight.normal,
            ),
            overflow: TextOverflow.ellipsis,
          ),
        ),
      ],
    );
  }

  Widget _buildStatusText(String text, Color color) {
    return Text(
      text,
      style: TextStyle(color: color, fontWeight: FontWeight.bold),
    );
  }

  Widget _buildExpiredDateRange() {
    final jalaliStart = Jalali.fromDateTime(discount.startDate!);
    final jalaliEnd = Jalali.fromDateTime(discount.endDate!);
    final formattedDateRange =
        '${jalaliStart.day} ${jalaliStart.formatter.mN} تا ${jalaliEnd.day} ${jalaliEnd.formatter.mN} ${jalaliEnd.year}';

    return Row(
      children: [
        SvgPicture.asset(Assets.icons.clunder,
            width: 18, color: Colors.grey.shade700),
        const SizedBox(width: 10),
        Expanded(
          child: Text(
            formattedDateRange,
            style: const TextStyle(
              color: AppColors.secTitle,
              fontWeight: FontWeight.normal,
              fontSize: 14,
            ),
            overflow: TextOverflow.ellipsis,
          ),
        ),
      ],
    );
  }

  Widget _buildCountdownSection(Duration remaining) {
    return Row(
      children: [
        SvgPicture.asset(Assets.icons.timerPause,
            width: 18, color: Colors.grey.shade700),
        const SizedBox(width: 5),
        Expanded(child: _buildCountdownTimer(remaining)),
      ],
    );
  }

  Widget _buildActionButtons(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(right: 8),
      child: Row(
        children: [
          InkWell(
            onTap: () => _showDeleteConfirmation(context),
            borderRadius: BorderRadius.circular(8),
            child: Container(
              padding: const EdgeInsets.symmetric(vertical: 8.0),
              decoration: BoxDecoration(
                  color: AppColors.backDelete,
                  borderRadius: BorderRadius.circular(8),
                  border: Border.all(color: AppColors.expiryReserve)),
              child: Padding(
                padding: const EdgeInsets.fromLTRB(15, 0, 15, 0),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    SvgPicture.asset(Assets.icons.trash,
                        width: 20, color: AppColors.expiryReserve),
                    const SizedBox(width: 5),
                    const Text("حذف",
                        style: TextStyle(
                            color: AppColors.expiryReserve,
                            fontWeight: FontWeight.bold)),
                  ],
                ),
              ),
            ),
          ),
          const SizedBox(width: 15),
          InkWell(
            onTap: () {
              Navigator.of(context)
                  .push(
                MaterialPageRoute(
                  builder: (_) => AddDiscountPage(discountId: discount.id),
                ),
              )
                  .then((value) {
                if (value == true) {
                  final bloc = context.read<DiscountManagementBloc>();
                  bloc.add(
                      FetchManagedDiscounts(status: 1));
                }
              });
            },
            borderRadius: BorderRadius.circular(8),
            child: Container(
              padding: const EdgeInsets.symmetric(vertical: 8.0),
              decoration: BoxDecoration(
                  color: AppColors.backEdit,
                  borderRadius: BorderRadius.circular(8),
                  border: Border.all(color: AppColors.selectedImg)),
              child: Padding(
                padding: const EdgeInsets.fromLTRB(15, 0, 15, 0),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    SvgPicture.asset(Assets.icons.edit,
                        width: 20, color: AppColors.selectedImg),
                    const SizedBox(width: 5),
                    const Text("ویرایش",
                        style: TextStyle(
                            color: AppColors.selectedImg,
                            fontWeight: FontWeight.bold)),
                  ],
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

  void _showDeleteConfirmation(BuildContext context) {
    showDeleteConfirmationDialog(
      context,
      title: 'حذف تخفیف',
      content: 'با حذف این تخفیف، رزروهای احتمالی هم غیرفعال می‌شن و دیگه برای مشتری‌ها نمایش داده نمی‌شه.',
      onConfirm: () {
        context
            .read<DiscountManagementBloc>()
            .add(DeleteDiscount(discount.id));
      },
    );
  }

  Widget _buildCountdownTimer(Duration remaining) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Directionality(
          textDirection: TextDirection.ltr,
          child: SlideCountdown(
            duration: remaining,
            slideDirection: SlideDirection.up,
            separator: ':',
            style: const TextStyle(
                fontSize: 15,
                fontWeight: FontWeight.bold,
                color: AppColors.countdown),
            separatorStyle:
                const TextStyle(fontSize: 15, color: AppColors.countdown),
            decoration: const BoxDecoration(color: Colors.transparent),
            shouldShowDays: (d) => d.inDays > 0,
            shouldShowHours: (d) => true,
            shouldShowMinutes: (d) => true,
          ),
        ),
        const SizedBox(height: 4),
        _buildTimerLabels(remaining),
      ],
    );
  }

  Widget _buildTimerLabels(Duration duration) {
    const labelStyle = TextStyle(fontSize: 9, color: AppColors.selectedImg);
    List<Widget> labels = [];
    if (duration.inDays > 0) {
      labels.add(const SizedBox(width: 30, child: Text("روز", style: labelStyle)));
    }
    if (duration.inHours > 0 || duration.inDays > 0) {
      labels
          .add(const SizedBox(width: 35, child: Text("ساعت", style: labelStyle)));
    }
    labels
        .add(const SizedBox(width: 35, child: Text("دقیقه", style: labelStyle)));
    labels
        .add(const SizedBox(width: 35, child: Text("  ثانیه", style: labelStyle)));
    return Row(
      mainAxisAlignment: MainAxisAlignment.start,
      children: labels.reversed.toList(),
    );
  }
}