import React, { useState } from 'react';
import { CardElement, AddressElement, useStripe, useElements } from '@stripe/react-stripe-js';
import { format } from 'date-fns';
import toast from 'react-hot-toast';
import { GlassCard } from '../../../shared-minimal/components/mobile/GlassCard';
import { useCreateDonation, useDonations } from '../hooks/useSubscription';
import type { StripeCardElementChangeEvent, StripeAddressElementChangeEvent } from '@stripe/stripe-js';
import type { SubscriptionTier } from '../types/subscription.types';

interface DonationSectionMobileProps {
  currentTier?: SubscriptionTier;
}

const CARD_ELEMENT_OPTIONS = {
  style: {
    base: {
      fontSize: '16px',
      color: '#424770',
      '::placeholder': {
        color: '#aab7c4',
      },
    },
    invalid: {
      color: '#9e2146',
    },
  },
};

export const DonationSectionMobile: React.FC<DonationSectionMobileProps> = ({ currentTier }) => {
  const stripe = useStripe();
  const elements = useElements();
  const [amount, setAmount] = useState<string>('');
  const [error, setError] = useState<string | null>(null);
  const [processing, setProcessing] = useState(false);
  const [cardComplete, setCardComplete] = useState(false);
  const [addressComplete, setAddressComplete] = useState(false);
  const [showSuccess, setShowSuccess] = useState(false);

  const createDonationMutation = useCreateDonation();
  const { data: donationsData, isLoading: isLoadingDonations } = useDonations();

  const donations = donationsData?.data || [];

  const handleCardChange = (event: StripeCardElementChangeEvent) => {
    setError(event.error?.message || null);
    setCardComplete(event.complete);
  };

  const handleAddressChange = (event: StripeAddressElementChangeEvent) => {
    setAddressComplete(event.complete);
  };

  const handleSubmit = async (event: React.FormEvent) => {
    event.preventDefault();

    if (!stripe || !elements) {
      return;
    }

    const cardElement = elements.getElement(CardElement);
    if (!cardElement) {
      return;
    }

    const addressElement = elements.getElement(AddressElement);
    if (!addressElement) {
      return;
    }

    // Validate amount
    const amountNum = parseFloat(amount);
    if (isNaN(amountNum) || amountNum < 0.5) {
      setError('Minimum donation amount is $0.50');
      return;
    }

    // Get billing address data
    const addressData = await addressElement.getValue();
    if (!addressData.complete) {
      setError('Please complete the billing address');
      return;
    }

    setProcessing(true);
    setError(null);

    try {
      // Create donation payment intent
      const donationResponse = await createDonationMutation.mutateAsync(amountNum);
      const { clientSecret } = donationResponse.data;

      // Confirm payment with Stripe including billing details
      const { error: confirmError } = await stripe.confirmCardPayment(clientSecret, {
        payment_method: {
          card: cardElement,
          billing_details: {
            name: addressData.value.name,
            address: {
              line1: addressData.value.address.line1,
              line2: addressData.value.address.line2 || undefined,
              city: addressData.value.address.city,
              state: addressData.value.address.state,
              postal_code: addressData.value.address.postal_code,
              country: addressData.value.address.country,
            },
          },
        },
      });

      if (confirmError) {
        setError(confirmError.message || 'Payment failed');
        setProcessing(false);
        return;
      }

      // Success!
      setShowSuccess(true);
      setAmount('');
      cardElement.clear();
      toast.success('Thank you for your donation!');

      // Hide success message after 5 seconds
      setTimeout(() => {
        setShowSuccess(false);
      }, 5000);
    } catch (err: unknown) {
      const error = err as { response?: { data?: { error?: string } } };
      setError(error.response?.data?.error || 'An unexpected error occurred');
    } finally {
      setProcessing(false);
    }
  };

  const isFormValid = amount && parseFloat(amount) >= 0.5 && cardComplete && addressComplete && !processing;

  return (
    <GlassCard>
      <h2 className="text-xl font-bold text-slate-800 dark:text-avus mb-3">
        Support MotoVaultPro
      </h2>

      {currentTier === 'free' && (
        <div className="bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-700 rounded-xl p-3 mb-4">
          <p className="text-sm text-blue-800 dark:text-blue-300">
            Love MotoVaultPro? Consider making a one-time donation to support development!
          </p>
        </div>
      )}

      <p className="text-sm text-slate-600 dark:text-titanio mb-4">
        Your donations help us continue to improve and maintain MotoVaultPro. Thank you for your support!
      </p>

      {showSuccess && (
        <div className="bg-green-50 dark:bg-green-900/20 border border-green-200 dark:border-green-700 rounded-xl p-3 mb-4">
          <p className="text-sm text-green-800 dark:text-green-300">
            Thank you for your generous donation! Your support means the world to us.
          </p>
        </div>
      )}

      <form onSubmit={handleSubmit}>
        <div className="mb-4">
          <label className="block text-sm font-medium text-slate-700 dark:text-avus mb-2">
            Donation Amount
          </label>
          <div className="relative">
            <span className="absolute left-3 top-3 text-slate-600 dark:text-titanio">$</span>
            <input
              type="number"
              value={amount}
              onChange={(e) => setAmount(e.target.value)}
              placeholder="Enter amount"
              min="0.5"
              step="0.01"
              disabled={processing}
              className="w-full pl-8 pr-4 py-3 bg-white dark:bg-nero border border-slate-200 dark:border-grigio rounded-xl text-slate-900 dark:text-white placeholder:text-slate-400 dark:placeholder:text-titanio focus:outline-none focus:ring-2 focus:ring-rose-500 min-h-[44px]"
            />
          </div>
        </div>

        <div className="mb-4">
          <label className="block text-sm font-medium text-slate-700 dark:text-avus mb-2">
            Billing Address
          </label>
          <div className="border border-slate-200 dark:border-grigio rounded-xl p-3 bg-white dark:bg-nero">
            <AddressElement
              options={{
                mode: 'billing',
                defaultValues: {
                  address: {
                    country: 'US',
                  },
                },
              }}
              onChange={handleAddressChange}
            />
          </div>
        </div>

        <div className="mb-4">
          <label className="block text-sm font-medium text-slate-700 dark:text-avus mb-2">
            Card Details
          </label>
          <div className="border border-slate-200 dark:border-grigio rounded-xl p-3 bg-white dark:bg-nero">
            <CardElement options={CARD_ELEMENT_OPTIONS} onChange={handleCardChange} />
          </div>
        </div>

        {error && (
          <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-700 rounded-xl p-3 mb-4">
            <p className="text-sm text-red-800 dark:text-red-300">{error}</p>
          </div>
        )}

        <button
          type="submit"
          disabled={!isFormValid}
          className={`w-full py-3 px-4 rounded-xl font-semibold min-h-[44px] ${
            isFormValid
              ? 'bg-rose-500 text-white hover:bg-rose-600'
              : 'bg-gray-200 dark:bg-gray-700 text-gray-500 dark:text-gray-400'
          }`}
        >
          {processing ? 'Processing...' : 'Donate'}
        </button>
      </form>

      {donations.length > 0 && (
        <div className="mt-6">
          <h3 className="text-lg font-bold text-slate-800 dark:text-avus mb-3">
            Donation History
          </h3>

          {isLoadingDonations ? (
            <div className="flex justify-center p-6">
              <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-rose-500"></div>
            </div>
          ) : (
            <div className="space-y-2">
              {donations.map((donation: any) => (
                <div
                  key={donation.id}
                  className="flex justify-between items-center p-3 bg-slate-50 dark:bg-scuro rounded-xl"
                >
                  <div>
                    <div className="text-sm font-medium text-slate-800 dark:text-avus">
                      {format(new Date(donation.createdAt), 'MMM dd, yyyy')}
                    </div>
                    <div className="text-xs text-slate-600 dark:text-titanio">
                      ${(donation.amountCents / 100).toFixed(2)}
                    </div>
                  </div>
                  <span
                    className={`text-xs px-2 py-1 rounded-full ${
                      donation.status === 'succeeded'
                        ? 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-400'
                        : 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-400'
                    }`}
                  >
                    {donation.status}
                  </span>
                </div>
              ))}
            </div>
          )}
        </div>
      )}
    </GlassCard>
  );
};
