import 'dart:async';

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:proxibuy/core/config/app_colors.dart';
import 'package:proxibuy/core/gen/assets.gen.dart';
import 'package:proxibuy/data/models/offer_model.dart';
import 'package:qr_flutter/qr_flutter.dart';
import 'package:flutter_animate/flutter_animate.dart';

class ReservationConfirmationPage extends StatefulWidget {
  final OfferModel offer;

  const ReservationConfirmationPage({super.key, required this.offer});

  @override
  State<ReservationConfirmationPage> createState() =>
      _ReservationConfirmationPageState();
}

class _ReservationConfirmationPageState extends State<ReservationConfirmationPage> {
  Timer? _timer;
  Duration _remaining = Duration.zero;

  @override
  void initState() {
    super.initState();
    _calculateRemainingTime();
    _timer = Timer.periodic(const Duration(seconds: 1), (timer) {
      _calculateRemainingTime();
    });
  }

  void _calculateRemainingTime() {
    final now = DateTime.now();
    if (widget.offer.expiryTime.isAfter(now)) {
      if (mounted) {
        setState(() {
          _remaining = widget.offer.expiryTime.difference(now);
        });
      }
    } else {
      if (mounted) {
        setState(() {
          _remaining = Duration.zero;
        });
      }
      _timer?.cancel();
    }
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Directionality(
      textDirection: TextDirection.rtl,
      child: Scaffold(
        backgroundColor: Colors.grey[50],
        appBar: _buildCustomAppBar(context),
        body: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 24.0, vertical: 32.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // ✅ انیمیشن برای عنوان اصلی
              Text(
                'تخفیف ${widget.offer.discountType} رزرو شد!',
                style: const TextStyle(
                  fontSize: 20,
                  fontWeight: FontWeight.bold,
                  color: Colors.black87,
                ),
              ).animate().fadeIn(delay: 300.ms, duration: 500.ms).slideY(begin: -0.2, end: 0),

              const SizedBox(height: 8),
              // ✅ انیمیشن برای خط جداکننده
              const Divider(thickness: 1.5)
                  .animate()
                  .fadeIn(delay: 400.ms)
                  .scaleX(begin: 0, duration: 600.ms, curve: Curves.easeInOut),

              const SizedBox(height: 18),
              _buildOfferDetailsCard()
                  .animate()
                  .fadeIn(delay: 600.ms, duration: 500.ms)
                  .slideX(begin: 0.5, end: 0, curve: Curves.easeOutCubic),

              const SizedBox(height: 18),
              _buildTimerCard()
                  .animate()
                  .fadeIn(delay: 800.ms, duration: 500.ms)
                  .scale(begin: const Offset(0.8, 0.8), curve: Curves.easeOutBack),

              const SizedBox(height: 18),
              _buildQrCodeCard()
                  .animate()
                  .fadeIn(delay: 1000.ms, duration: 500.ms)
                  .flipV(begin: -0.5, end: 0, curve: Curves.easeOut),
            ],
          ),
        ),
      ),
    );
  }

  PreferredSizeWidget _buildCustomAppBar(BuildContext context) {
    return PreferredSize(
      preferredSize: const Size.fromHeight(70.0),
      child: Container(
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: const BorderRadius.vertical(
            bottom: Radius.circular(15),
          ),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withOpacity(0.08),
              blurRadius: 10,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        child: SafeArea(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 16.0),
            child: Column(
              children: [
                SizedBox(height: 15),
                Row(
                  mainAxisAlignment: MainAxisAlignment.end,
                  children: [
                    Row(
                      children: [
                        const Text(
                          'رزرو شده',
                          style: TextStyle(
                            color: Colors.black,
                            fontWeight: FontWeight.normal,
                            fontSize: 16,
                          ),
                        ),
                        IconButton(
                          icon: SvgPicture.asset(Assets.icons.arrowLeft.path),
                          onPressed: () => Navigator.of(context).pop(),
                        ),
                      ],
                    ),
                  ],
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  Widget _buildOfferDetailsCard() {
    return Container(
      padding: const EdgeInsets.all(4),
      decoration: BoxDecoration(borderRadius: BorderRadius.circular(16)),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          ClipRRect(
            borderRadius: BorderRadius.circular(12),
            child: CachedNetworkImage(
              imageUrl: widget.offer.coverImageUrl,
              width: 110,
              height: 110,
              fit: BoxFit.cover,
            ),
          ),
          const SizedBox(width: 16),
          // جزئیات متنی
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: [
                Text(
                  widget.offer.title,
                  style: const TextStyle(
                    fontSize: 20,
                    fontWeight: FontWeight.normal,
                    color: AppColors.hint,
                  ),
                ),
                const SizedBox(height: 10),
                Row(
                  children: [
                    SvgPicture.asset(Assets.icons.ticketDiscount.path),
                    const SizedBox(width: 6),
                    Text(
                      '(${widget.offer.discount})',
                      style: const TextStyle(
                        fontSize: 16,
                        color: AppColors.singleOfferType,
                        fontWeight: FontWeight.normal,
                      ),
                    ),
                    const SizedBox(width: 6),
                    Text(
                      widget.offer.originalPrice.toStringAsFixed(0),
                      style: TextStyle(
                        fontSize: 14,
                        color: Colors.grey.shade600,
                        decoration: TextDecoration.lineThrough,
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 10),
                Row(
                  children: [
                    SvgPicture.asset(Assets.icons.cardPos.path,height: 22,color: Color.fromARGB(255, 157, 157, 155),),
                    SizedBox(width: 6,),
                    Text(
                      '${widget.offer.finalPrice.toStringAsFixed(0)} تومان',
                      style: const TextStyle(
                        fontSize: 20,
                        fontWeight: FontWeight.normal,
                        color: AppColors.singleOfferType,
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 10),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildTimerCard() {
    if (_remaining.inSeconds <= 0) {
      return const Center(
        child: Text(
          'مهلت این تخفیف به پایان رسیده است',
          style: TextStyle(color: AppColors.singleOfferType, fontSize: 16),
        ),
      );
    }
    
    String days = _remaining.inDays.toString();
    String hours = (_remaining.inHours % 24).toString();
    String minutes = (_remaining.inMinutes % 60).toString();
    String seconds = (_remaining.inSeconds % 60).toString();

    return Container(
      padding: const EdgeInsets.symmetric(vertical: 20),
      decoration: BoxDecoration(
        color: Color.fromARGB(255, 246, 246, 246),
        borderRadius: BorderRadius.circular(16),
      ),
      child: Column(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Column(
                children: [
                  Text("مدت",style: TextStyle(color: AppColors.expiryReserve,fontSize: 15),),
                  SizedBox(height: 7,),
                  Text("اعتبار",style: TextStyle(color: AppColors.expiryReserve,fontSize: 15),),
                ],
              ),
              SizedBox(width: 25,),
              _buildTimeBlock(seconds, 'ثانیه'),
              SizedBox(width: 20,),
              _buildTimeBlock(minutes, 'دقیقه'),
              SizedBox(width: 20,),
              _buildTimeBlock(hours, 'ساعت'),
              SizedBox(width: 20,),
              if (_remaining.inDays > 0) _buildTimeBlock(days, 'روز'),
            ],
          ),
          SizedBox(height: 20 ,),
          Text("لطفا QR Code زیر رو به فروشنده نشون بده.",style: TextStyle(fontSize: 15),)
        ],
      ),
    );
  }

  Widget _buildTimeBlock(String value, String label) {
    return Row(
      children: [
        Container(
          padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 3),
          decoration: BoxDecoration(
            border: Border.all(color: AppColors.countdownBorderRserve, width: 1.5),
            borderRadius: BorderRadius.circular(12),
          ),
          child: Padding(
            padding: const EdgeInsets.all(4.0),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                Text(
                  value,
                  style: const TextStyle(
                    fontSize: 20,
                    fontFamily: 'Dana',
                    fontWeight: FontWeight.bold,
                    color: Colors.black,
                  ),
                ),
                const SizedBox(height: 4),
                Text(
                  label,
                  style: const TextStyle(
                    fontSize: 12,
                    fontFamily: 'Dana',
                    color: Colors.black,
                  ),
                ),
              ],
            ),
          ),
        ),
      ],
    );
  }
  Widget _buildQrCodeCard() {
    return Center(
      child: Container(
        width: 500,
        padding: const EdgeInsets.all(20),
        decoration: BoxDecoration(
          color: Color.fromARGB(255, 246, 246, 246),
          borderRadius: BorderRadius.circular(16),
        ),
        child: Column(
          children: [
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: QrImageView(
                data: widget.offer.qrCodeData,
                version: QrVersions.auto,
                size: 280.0,
              ),
            ),
            SizedBox(height: 10,),
            Text(widget.offer.qrCodeData,style: TextStyle(fontWeight: FontWeight.bold,fontSize: 20),)
          ],
        ),
      ),
    );
  }
}