'use client';

import { useState } from 'react';
import { PaymentElement, useStripe, useElements } from '@stripe/react-stripe-js';
import { orderStore } from '@/store/useOrderStore';

export function PaymentStep() {
  const stripe = useStripe();
  const elements = useElements();
  const [errorMsg, setErrorMsg] = useState('');
  const [isLoading, setIsLoading] = useState(false);

  const handleSubmit = async () => {
    if (!stripe || !elements) return;

    setIsLoading(true);
    setErrorMsg('');

    // Validate the payment element first
    const { error: submitError } = await elements.submit();
    if (submitError) {
      setErrorMsg(submitError.message || 'Validation failed');
      setIsLoading(false);
      return;
    }

    // Move to review — actual confirmation happens on "Place Order"
    orderStore.getState().setPayment({ status: 'idle' });
    orderStore.getState().setStep('review');
    setIsLoading(false);
  };

  return (
    <div style={{ display: 'flex', flexDirection: 'column', gap: '1rem' }}>
      <h3 style={{ fontSize: '1rem', fontWeight: 600, color: '#1a1a2e', margin: 0 }}>
        Payment Details
      </h3>

      <div style={{
        padding: '1rem',
        borderRadius: '0.5rem',
        background: '#fff',
        border: '1px solid rgba(0, 0, 0, 0.08)',
      }}>
        <PaymentElement
          options={{
            layout: 'tabs',
          }}
        />
      </div>

      {errorMsg && (
        <div style={{
          padding: '0.6rem 0.75rem',
          borderRadius: '0.375rem',
          background: 'rgba(239, 68, 68, 0.06)',
          border: '1px solid rgba(239, 68, 68, 0.15)',
          fontSize: '0.75rem',
          color: '#dc2626',
        }}>
          {errorMsg}
        </div>
      )}

      <button
        onClick={handleSubmit}
        disabled={!stripe || isLoading}
        style={{
          marginTop: '0.5rem',
          padding: '0.75rem',
          borderRadius: '0.375rem',
          border: '1px solid rgba(59, 130, 246, 0.5)',
          background: isLoading ? 'rgba(59, 130, 246, 0.15)' : 'rgba(59, 130, 246, 0.08)',
          color: '#2563eb',
          cursor: isLoading ? 'wait' : 'pointer',
          fontSize: '0.85rem',
          fontWeight: 600,
          transition: 'all 0.2s ease',
        }}
      >
        {isLoading ? 'Validating...' : 'Review Order'}
      </button>
    </div>
  );
}