import React, { useState, useEffect } from 'react';
import { Form, Input, Button, DatePicker, Steps, Radio, Card, message, Alert, Descriptions, Breadcrumb, Typography, Modal, Row, Col, Select, Tag } from 'antd';
import { useNavigate, Link } from 'react-router-dom';
import { HomeOutlined, CreditCardOutlined, PlusOutlined, CheckCircleFilled } from '@ant-design/icons';
import dayjs from 'dayjs';
import api from '../utils/api';
import { colors, spacing, fontSize, commonStyles } from '../theme';

const { Option } = Select;

const { Step } = Steps;
const { TextArea } = Input;
const { Title } = Typography;

// Card type colors
const cardTypeColors = {
  'Visa': '#1a1f71',
  'Mastercard': '#eb001b',
  'American Express': '#006fcf',
  'Discover': '#ff6000',
  'default': colors.primary,
};

const Order = () => {
  const navigate = useNavigate();
  const [currentStep, setCurrentStep] = useState(0);
  const [loading, setLoading] = useState(false);
  const [pricing, setPricing] = useState({ price_per_gallon: 0, price_same_day: 0, price_prime: 0, price_emergency: 0, date: null });
  const [totalPrice, setTotalPrice] = useState(0);
  const [selectedGallons, setSelectedGallons] = useState(100);
  const [selectedDate, setSelectedDate] = useState(dayjs().add(1, 'day'));
  const [customerTown, setCustomerTown] = useState(null);
  const [serviceType, setServiceType] = useState(null); // null, 'same_day', 'emergency'
  const [primeSelected, setPrimeSelected] = useState(false);
  const [formData, setFormData] = useState({
    gallons_ordered: 100,
    expected_delivery_date: dayjs().add(1, 'day'),
    dispatcher_notes: '',
    payment_type: 11, // credit (Authorize.net)
  });
  const [notesLength, setNotesLength] = useState(0);

  // Saved cards state
  const [savedCards, setSavedCards] = useState([]);
  const [loadingCards, setLoadingCards] = useState(true);
  const [selectedCardId, setSelectedCardId] = useState(null);
  const [addCardModalVisible, setAddCardModalVisible] = useState(false);
  const [addCardLoading, setAddCardLoading] = useState(false);
  const [addCardForm] = Form.useForm();

  // Generate year options for card expiration
  const currentYear = new Date().getFullYear();
  const yearOptions = Array.from({ length: 11 }, (_, i) => currentYear + i);

  // Fetch pricing on component mount and set up auto-refresh
  useEffect(() => {
    const fetchPricing = async () => {
      try {
        const response = await api.get('/info/pricing/current');
        setPricing(response.data);
      } catch (error) {
        console.error('Failed to fetch pricing:', error);
      }
    };

    fetchPricing();

    // Auto-refresh pricing every 30 seconds
    const interval = setInterval(fetchPricing, 30000);

    return () => clearInterval(interval);
  }, []);

  // Fetch customer town on component mount
  useEffect(() => {
    const fetchCustomerData = async () => {
      try {
        const response = await api.get('/auth/me');
        setCustomerTown(response.data.customer_town);
      } catch (error) {
        console.error('Failed to fetch customer data:', error);
      }
    };

    fetchCustomerData();
  }, []);

  // Fetch saved cards on component mount
  useEffect(() => {
    const fetchSavedCards = async () => {
      setLoadingCards(true);
      try {
        const response = await api.get('/payment/cards');
        setSavedCards(response.data);
        // Auto-select default card if exists
        const defaultCard = response.data.find(card => card.main_card);
        if (defaultCard) {
          setSelectedCardId(defaultCard.id);
        } else if (response.data.length > 0) {
          setSelectedCardId(response.data[0].id);
        }
      } catch (error) {
        console.error('Failed to fetch saved cards:', error);
      } finally {
        setLoadingCards(false);
      }
    };

    fetchSavedCards();
  }, []);

  // Calculate total price when gallons, pricing, service type, or prime changes
  useEffect(() => {
    const basePrice = pricing.price_per_gallon * formData.gallons_ordered;
    const surcharge = getSurcharge();
    const calculatedTotal = basePrice + surcharge;
    setTotalPrice(calculatedTotal);
  }, [pricing.price_per_gallon, formData.gallons_ordered, serviceType, primeSelected]);

  const next = () => {
    setCurrentStep(currentStep + 1);
  };

  const prev = () => {
    setCurrentStep(currentStep - 1);
  };

  const handleGallonsChange = (value) => {
    setFormData(prev => ({ ...prev, gallons_ordered: value }));
    setSelectedGallons(value);
  };

  const handleDateChange = (date) => {
    setFormData(prev => ({ ...prev, expected_delivery_date: date }));
    setSelectedDate(date);
  };

  const handleNotesChange = (e) => {
    setFormData({ ...formData, dispatcher_notes: e.target.value });
    setNotesLength(e.target.value.length);
  };

  const handlePaymentChange = (e) => {
    setFormData({ ...formData, payment_type: e.target.value });
  };

  // Towns where 100 gallons is restricted
  const restrictedTowns = ['Sutton', 'Millbury', 'Paxton', 'Grafton'];

  // Check if same day service is available (6am-2pm)
  const isSameDayAvailable = () => {
    const now = dayjs();
    const hour = now.hour();
    return hour >= 6 && hour < 14; // 6am to 2pm (14:00)
  };

  // Get surcharge based on service type and prime
  const getSurcharge = () => {
    let surcharge = 0;
    if (serviceType === 'same_day') surcharge += pricing.price_same_day;
    if (serviceType === 'emergency') surcharge += pricing.price_emergency;
    if (primeSelected) surcharge += pricing.price_prime;
    return surcharge;
  };

  // Handle same day service selection
  const handleSameDaySelect = () => {
    if (serviceType === 'same_day') {
      // Deselect same day
      setServiceType(null);
      handleDateChange(dayjs().add(1, 'day')); // Reset to tomorrow
    } else {
      // Select same day
      setServiceType('same_day');
      handleDateChange(dayjs()); // Set to today
    }
  };

  // Handle emergency service selection
  const handleEmergencySelect = () => {
    if (serviceType === 'emergency') {
      // Deselect emergency
      setServiceType(null);
      handleDateChange(dayjs().add(1, 'day')); // Reset to tomorrow
      handleGallonsChange(100); // Reset to default gallons
    } else {
      // Select emergency
      setServiceType('emergency');
      handleDateChange(dayjs()); // Set to today
      handleGallonsChange(225); // Force 225 gallons
    }
  };

  // Helper function to mask card number
  const maskCardNumber = (cardNumber) => {
    if (!cardNumber) return '';
    const digits = cardNumber.replace(/\s/g, '');
    const last4 = digits.slice(-4);
    return `**** **** **** ${last4}`;
  };

  // Handle add new card
  const handleAddCard = () => {
    addCardForm.resetFields();
    setAddCardModalVisible(true);
  };

  const handleAddCardSubmit = async () => {
    try {
      const values = await addCardForm.validateFields();
      setAddCardLoading(true);

      const response = await api.post('/payment/cards', {
        card_number: values.card_number.replace(/\s/g, ''),
        name_on_card: values.name_on_card,
        expiration_month: values.expiration_month,
        expiration_year: values.expiration_year,
        security_number: values.security_number,
        zip_code: values.zip_code,
      });

      message.success('Card added successfully');
      setAddCardModalVisible(false);
      addCardForm.resetFields();

      // Refresh cards and select the new one
      const cardsResponse = await api.get('/payment/cards');
      setSavedCards(cardsResponse.data);
      setSelectedCardId(response.data.id);
    } catch (error) {
      if (error.errorFields) {
        return;
      }
      const errorMsg = error.response?.data?.detail || 'Failed to add card';
      message.error(errorMsg);
      console.error('Error adding card:', error);
    } finally {
      setAddCardLoading(false);
    }
  };

  // Get selected card details
  const getSelectedCard = () => {
    return savedCards.find(card => card.id === selectedCardId);
  };

  const onFinish = async () => {
    setLoading(true);
    try {
      if (formData.payment_type === 11) {
        // Validate card selection
        if (!selectedCardId) {
          message.error('Please select a payment card or add a new one');
          setLoading(false);
          return;
        }

        // Process credit card payment using saved card
        const paymentData = {
          amount: totalPrice,
          card_id: selectedCardId,
        };

        const paymentResponse = await api.post('/payment/process', paymentData);

        if (paymentResponse.data.status === 'approved') {
          message.success(`Payment approved! Transaction ID: ${paymentResponse.data.auth_net_transaction_id}`, 4.5);

          // Now create the delivery
          const deliveryData = {
            gallons_ordered: formData.gallons_ordered,
            expected_delivery_date: formData.expected_delivery_date.format('YYYY-MM-DD'),
            dispatcher_notes: formData.dispatcher_notes,
            payment_type: formData.payment_type,
            prime: primeSelected ? 1 : 0,
            same_day: serviceType === 'same_day' ? 1 : 0,
            emergency: serviceType === 'emergency' ? 1 : 0,
            pre_charge_amount: totalPrice,
          };

          const deliveryResponse = await api.post('/order/deliveries', deliveryData);
          message.success('Delivery created successfully!', 4.5);

          navigate('/');

          // Reset form
          setFormData({
            gallons_ordered: 100,
            expected_delivery_date: dayjs().add(1, 'day'),
            dispatcher_notes: '',
            payment_type: 11,
          });
          setServiceType(null);
          setPrimeSelected(false);
          setCurrentStep(0);
        } else {
          message.error('Payment was declined. Please check your card details.', 4.5);
        }
      } else {
        // Cash payment - just create delivery
        const data = {
          gallons_ordered: formData.gallons_ordered,
          expected_delivery_date: formData.expected_delivery_date.format('YYYY-MM-DD'),
          dispatcher_notes: formData.dispatcher_notes,
          payment_type: formData.payment_type,
          prime: primeSelected ? 1 : 0,
          same_day: serviceType === 'same_day' ? 1 : 0,
          emergency: serviceType === 'emergency' ? 1 : 0,
          pre_charge_amount: totalPrice,
        };
        const response = await api.post('/order/deliveries', data);
        message.success('Delivery created successfully!', 4.5);

        navigate('/');

        // Reset form
        setFormData({
          gallons_ordered: 100,
          expected_delivery_date: dayjs().add(1, 'day'),
          dispatcher_notes: '',
          payment_type: 11,
        });
        setServiceType(null);
        setPrimeSelected(false);
        setCurrentStep(0);
      }
    } catch (error) {
      message.error('Failed to process order: ' + error.response?.data?.detail || error.message, 4.5);
    } finally {
      setLoading(false);
    }
  };

  const steps = [
    {
      title: 'Order Details',
      content: (
        <div>
          {/* Part 1: Gallons and Date */}
          <div style={{ marginBottom: 24, padding: 16, backgroundColor: '#fff', borderRadius: 8, border: '1px solid #e8e8e8' }}>
            <Form.Item label="Gallons Ordered" rules={[{ required: true, message: 'Please enter gallons ordered' }]}>
              <div style={{ marginBottom: 8, display: 'flex', flexWrap: 'wrap', gap: 5 }}>
                {[100, 125, 150, 175, 200, 225, 250].map(gallons => (
                  <Button
                    key={gallons}
                    type={selectedGallons === gallons ? "primary" : "default"}
                    onClick={() => handleGallonsChange(gallons)}
                    disabled={
                      (gallons === 100 && customerTown && restrictedTowns.some(town => town.toLowerCase() === customerTown.toLowerCase())) ||
                      (serviceType === 'emergency' && gallons !== 225)
                    }
                    size="small"
                  >
                    {gallons}
                  </Button>
                ))}
              </div>
              <Input
                type="number"
                value={formData.gallons_ordered}
                onChange={(e) => handleGallonsChange(parseInt(e.target.value))}
                min={100}
                disabled={serviceType === 'emergency'}
              />
              {formData.gallons_ordered < 100 && (
                <div style={{ color: 'red' }}>200$ charge below 100 gallons</div>
              )}
            </Form.Item>
            <Form.Item label="Delivery Date" rules={[{ required: true, message: 'Please select a delivery date' }]}>
              <div style={{ marginBottom: 8, display: 'flex', flexWrap: 'wrap', gap: 5 }}>
                <Button
                  type={selectedDate.isSame(dayjs().add(1, 'day'), 'day') ? "primary" : "default"}
                  onClick={() => handleDateChange(dayjs().add(1, 'day'))}
                  disabled={serviceType !== null}
                  size="small"
                >
                  Tomorrow
                </Button>
                <Button
                  type={selectedDate.isSame(dayjs().add(2, 'day'), 'day') ? "primary" : "default"}
                  onClick={() => handleDateChange(dayjs().add(2, 'day'))}
                  disabled={serviceType !== null}
                  size="small"
                >
                  In 2 days
                </Button>
                <Button
                  type={selectedDate.isSame(dayjs().add(3, 'day'), 'day') ? "primary" : "default"}
                  onClick={() => handleDateChange(dayjs().add(3, 'day'))}
                  disabled={serviceType !== null}
                  size="small"
                >
                  In 3 days
                </Button>
              </div>
              <DatePicker
                value={formData.expected_delivery_date}
                onChange={handleDateChange}
                disabledDate={(current) => current && current < dayjs().startOf('day')}
              />
            </Form.Item>
          </div>

          {/* Part 2: Service Options */}
          <div style={{ marginBottom: 24, padding: 16, backgroundColor: '#fff', borderRadius: 8, border: '1px solid #e8e8e8' }}>
            <div style={{ fontWeight: 'bold', marginBottom: 8 }}>Service Options</div>
            <div style={{ marginBottom: 10 }}>
              {isSameDayAvailable() && (
                <Button
                  type={serviceType === 'same_day' ? "primary" : "default"}
                  onClick={handleSameDaySelect}
                  style={{ marginRight: 10 }}
                >
                  Same Day (+${pricing.price_same_day})
                </Button>
              )}
              {!isSameDayAvailable() && (
                <div>
                  <div style={{ marginBottom: 8, fontSize: '14px', color: '#666' }}>
                    After hours immediate delivery
                  </div>
                  <Button
                    type={serviceType === 'emergency' ? "primary" : "default"}
                    onClick={handleEmergencySelect}
                  >
                    Emergency (+${pricing.price_emergency})
                  </Button>
                </div>
              )}
            </div>
            {serviceType === 'same_day' && (
              <div style={{ color: 'blue', fontSize: '12px' }}>
                Same day service selected - delivery today
              </div>
            )}
            {serviceType === 'emergency' && (
              <div style={{ color: 'blue', fontSize: '12px' }}>
                Emergency service selected - 225 gallons only
              </div>
            )}
            <div style={{ marginTop: 16 }}>
              <div style={{ marginBottom: 8, fontSize: '14px', color: '#666' }}>
                Ran out of oil? You will need a prime to restart your system
              </div>
              <Button
                type={primeSelected ? "primary" : "default"}
                onClick={() => setPrimeSelected(!primeSelected)}
              >
                Prime (+${pricing.price_prime})
              </Button>
            </div>
          </div>

          {/* Part 3: Notes */}
          <div style={{ padding: 16, backgroundColor: '#fff', borderRadius: 8, border: '1px solid #e8e8e8' }}>
            <Form.Item label="Notes for office" layout="vertical" style={{ width: '100%' }}>
              <TextArea
                value={formData.dispatcher_notes}
                onChange={handleNotesChange}
                placeholder="Notes for the dispatcher"
                style={{ width: '100%', borderColor: notesLength > 250 ? 'red' : undefined }}
              />
            </Form.Item>
            <div style={{ color: notesLength > 250 ? 'red' : 'green', fontSize: '12px', textAlign: 'right' }}>
              {notesLength}/250
            </div>
          </div>
        </div>
      ),
    },
    {
      title: 'Payment',
      content: (
        <div>
          <Form.Item label="Payment Method">
            <Radio.Group onChange={handlePaymentChange} value={formData.payment_type}>
              <Radio value={0}>Cash</Radio>
              <Radio value={11}>Credit</Radio>
            </Radio.Group>
          </Form.Item>
          {formData.payment_type === 11 && (
            <div>
              {loadingCards ? (
                <Card style={{ textAlign: 'center', padding: spacing.lg }}>
                  <div>Loading saved cards...</div>
                </Card>
              ) : savedCards.length === 0 ? (
                <Card style={{ textAlign: 'center', padding: spacing.xl }}>
                  <CreditCardOutlined style={{ fontSize: 48, color: colors.gray[300], marginBottom: spacing.md }} />
                  <div style={{ marginBottom: spacing.md, color: colors.text.secondary }}>
                    No saved payment methods
                  </div>
                  <Button type="primary" icon={<PlusOutlined />} onClick={handleAddCard}>
                    Add New Card
                  </Button>
                </Card>
              ) : (
                <div>
                  <div style={{ marginBottom: spacing.sm, fontWeight: 500 }}>Select a payment card:</div>
                  <div style={{ display: 'flex', flexDirection: 'column', gap: spacing.sm, marginBottom: spacing.md }}>
                    {savedCards.map((card) => {
                      const cardColor = cardTypeColors[card.type_of_card] || cardTypeColors.default;
                      const isSelected = selectedCardId === card.id;
                      return (
                        <Card
                          key={card.id}
                          size="small"
                          style={{
                            cursor: 'pointer',
                            border: isSelected ? `2px solid ${colors.primary}` : '1px solid #d9d9d9',
                            backgroundColor: isSelected ? '#f0f5ff' : '#fff',
                          }}
                          onClick={() => setSelectedCardId(card.id)}
                          styles={{ body: { padding: spacing.sm } }}
                        >
                          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
                            <div style={{ display: 'flex', alignItems: 'center', gap: spacing.sm }}>
                              <CreditCardOutlined style={{ fontSize: 24, color: cardColor }} />
                              <div>
                                <div style={{ fontWeight: 500 }}>
                                  {card.type_of_card || 'Card'} •••• {card.last_four_digits}
                                  {card.main_card && (
                                    <Tag color="gold" style={{ marginLeft: spacing.xs }}>Default</Tag>
                                  )}
                                </div>
                                <div style={{ fontSize: fontSize.xs, color: colors.text.secondary }}>
                                  {card.name_on_card} | Expires {card.expiration_month}/{card.expiration_year?.slice(-2)}
                                </div>
                              </div>
                            </div>
                            {isSelected && (
                              <CheckCircleFilled style={{ fontSize: 20, color: colors.primary }} />
                            )}
                          </div>
                        </Card>
                      );
                    })}
                  </div>
                  <Button icon={<PlusOutlined />} onClick={handleAddCard}>
                    Add New Card
                  </Button>
                </div>
              )}
            </div>
          )}
          {formData.payment_type === 0 && (
            <Card style={{ textAlign: 'center', padding: spacing.md }}>
              <div style={{ color: colors.text.secondary }}>
                Cash payment - pay the driver upon delivery
              </div>
            </Card>
          )}
        </div>
      ),
    },
    {
      title: 'Review',
      content: (
        <div>
          <Descriptions title="Order Summary" bordered column={1}>
            <Descriptions.Item label="Gallons">{formData.gallons_ordered}</Descriptions.Item>
            <Descriptions.Item label="Price per Gallon">${pricing.price_per_gallon.toFixed(2)}</Descriptions.Item>
            {serviceType && (
              <Descriptions.Item label="Service Surcharge">${serviceType === 'same_day' ? pricing.price_same_day : pricing.price_emergency} ({serviceType === 'same_day' ? 'Same Day' : 'Emergency'})</Descriptions.Item>
            )}
            {primeSelected && (
              <Descriptions.Item label="Prime Surcharge">${pricing.price_prime}</Descriptions.Item>
            )}
            <Descriptions.Item label="Total Amount">${totalPrice.toFixed(2)}</Descriptions.Item>
            <Descriptions.Item label="Delivery Date">{formData.expected_delivery_date.format('YYYY-MM-DD')}</Descriptions.Item>
            <Descriptions.Item label="Notes">{formData.dispatcher_notes || 'None'}</Descriptions.Item>
            <Descriptions.Item label="Payment Method">{formData.payment_type === 0 ? 'Cash' : 'Credit Card'}</Descriptions.Item>
          </Descriptions>
          {formData.payment_type === 11 && getSelectedCard() && (
            <Card
              style={{
                marginTop: 16,
                width: 300,
                background: `linear-gradient(135deg, ${cardTypeColors[getSelectedCard().type_of_card] || cardTypeColors.default} 0%, ${cardTypeColors[getSelectedCard().type_of_card] || cardTypeColors.default}dd 100%)`,
                color: colors.white,
                borderRadius: 12,
              }}
            >
              <div style={{ fontSize: fontSize.sm, marginBottom: spacing.xs }}>{getSelectedCard().type_of_card || 'Credit Card'}</div>
              <div style={{ fontSize: '18px', fontWeight: 'bold', fontFamily: 'monospace', letterSpacing: 2 }}>
                •••• •••• •••• {getSelectedCard().last_four_digits}
              </div>
              <div style={{ marginTop: spacing.sm }}>{getSelectedCard().name_on_card}</div>
              <div style={{ marginTop: 4, fontSize: '14px' }}>
                {getSelectedCard().expiration_month}/{getSelectedCard().expiration_year?.slice(-2)}
              </div>
            </Card>
          )}
        </div>
      ),
    },
  ];

  return (
    <div style={{ padding: '4px 0' }}>
      <Breadcrumb style={{ marginBottom: 16 }}>
        <Breadcrumb.Item>
          <Link to="/">
            <HomeOutlined /> Home
          </Link>
        </Breadcrumb.Item>
        <Breadcrumb.Item>Order Oil</Breadcrumb.Item>
      </Breadcrumb>

      <Title level={1} style={{ marginBottom: 16 }}>Order Oil</Title>

      <div style={{ maxWidth: '600px', margin: '0 auto' }}>
        {/* Dynamic Pricing Display */}
        <Alert
          message={`Current Oil Price: $${pricing.price_per_gallon.toFixed(2)} per gallon`}
          description={`Total for ${formData.gallons_ordered} gallons: $${totalPrice.toFixed(2)}`}
          type="info"
          showIcon
          style={{ marginBottom: 16 }}
        />

        <Steps current={currentStep}>
          {steps.map((item) => (
            <Step key={item.title} title={item.title} />
          ))}
        </Steps>
        <div style={{ marginTop: 8 }}>
          <Card style={commonStyles.cardGray} bodyStyle={{ padding: spacing.sm }}>
            {steps[currentStep].content}
            <div style={{ marginTop: 24 }}>
              {currentStep < steps.length - 1 && (
                <Button type="primary" onClick={next} disabled={notesLength > 250}>
                  Next
                </Button>
              )}
              {currentStep === steps.length - 1 && (
                <Button type="primary" onClick={onFinish} loading={loading} disabled={notesLength > 250}>
                  Submit
                </Button>
              )}
              {currentStep > 0 && (
                <Button style={{ marginLeft: 8 }} onClick={prev}>
                  Previous
                </Button>
              )}
            </div>
          </Card>
        </div>
      </div>
      {/* Add Card Modal */}
      <Modal
        title="Add New Card"
        open={addCardModalVisible}
        onOk={handleAddCardSubmit}
        onCancel={() => {
          setAddCardModalVisible(false);
          addCardForm.resetFields();
        }}
        confirmLoading={addCardLoading}
        okText="Add Card"
        cancelText="Cancel"
        destroyOnClose
      >
        <Form
          form={addCardForm}
          layout="vertical"
          style={{ marginTop: spacing.md }}
        >
          <Form.Item
            name="name_on_card"
            label="Name on Card"
            rules={[
              { required: true, message: 'Please enter the name on card' },
              { min: 2, message: 'Name must be at least 2 characters' },
            ]}
          >
            <Input placeholder="John Doe" autoComplete="cc-name" />
          </Form.Item>

          <Form.Item
            name="card_number"
            label="Card Number"
            rules={[
              { required: true, message: 'Please enter your card number' },
              {
                validator: (_, value) => {
                  if (!value) return Promise.resolve();
                  const digits = value.replace(/\s/g, '');
                  if (!/^\d+$/.test(digits)) {
                    return Promise.reject('Card number must contain only digits');
                  }
                  if (digits.length < 13 || digits.length > 19) {
                    return Promise.reject('Card number must be between 13 and 19 digits');
                  }
                  return Promise.resolve();
                },
              },
            ]}
          >
            <Input
              placeholder="1234 5678 9012 3456"
              maxLength={19}
              autoComplete="cc-number"
              onChange={(e) => {
                // Auto-format with spaces every 4 digits
                const value = e.target.value.replace(/\s/g, '').replace(/\D/g, '');
                const formatted = value.match(/.{1,4}/g)?.join(' ') || value;
                addCardForm.setFieldValue('card_number', formatted);
              }}
            />
          </Form.Item>

          <Row gutter={spacing.sm}>
            <Col span={8}>
              <Form.Item
                name="expiration_month"
                label="Month"
                rules={[{ required: true, message: 'Required' }]}
              >
                <Select placeholder="MM" autoComplete="cc-exp-month">
                  {Array.from({ length: 12 }, (_, i) => {
                    const month = String(i + 1).padStart(2, '0');
                    return (
                      <Option key={month} value={month}>
                        {month}
                      </Option>
                    );
                  })}
                </Select>
              </Form.Item>
            </Col>
            <Col span={8}>
              <Form.Item
                name="expiration_year"
                label="Year"
                rules={[{ required: true, message: 'Required' }]}
              >
                <Select placeholder="YYYY" autoComplete="cc-exp-year">
                  {yearOptions.map((year) => (
                    <Option key={year} value={String(year)}>
                      {year}
                    </Option>
                  ))}
                </Select>
              </Form.Item>
            </Col>
            <Col span={8}>
              <Form.Item
                name="security_number"
                label="CVV"
                rules={[
                  { required: true, message: 'Required' },
                  {
                    validator: (_, value) => {
                      if (!value) return Promise.resolve();
                      if (!/^\d{3,4}$/.test(value)) {
                        return Promise.reject('3-4 digits');
                      }
                      return Promise.resolve();
                    },
                  },
                ]}
              >
                <Input
                  placeholder="123"
                  maxLength={4}
                  autoComplete="cc-csc"
                  style={{ textAlign: 'center' }}
                />
              </Form.Item>
            </Col>
          </Row>

          <Form.Item
            name="zip_code"
            label="Billing Zip Code"
            rules={[
              { required: true, message: 'Please enter your billing zip code' },
              {
                validator: (_, value) => {
                  if (!value) return Promise.resolve();
                  if (!/^\d{5}(-\d{4})?$/.test(value)) {
                    return Promise.reject('Enter a valid US zip code');
                  }
                  return Promise.resolve();
                },
              },
            ]}
          >
            <Input placeholder="12345" maxLength={10} autoComplete="billing postal-code" />
          </Form.Item>
        </Form>
      </Modal>
    </div>
  );
};

export default Order;
