'use client';

import { useState } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import { FaTimes, FaTrash, FaShoppingCart } from 'react-icons/fa';
import { useCart } from '@/lib/CartContext';
import { Album, Purchase } from '@/lib/types';
import { formatPrice } from '@/lib/utils';
import PaymentModal from './PaymentModal';
import PurchaseSuccessModal from './PurchaseSuccessModal';

interface CartSidebarProps {
  isOpen: boolean;
  onClose: () => void;
}

export default function CartSidebar({ isOpen, onClose }: CartSidebarProps) {
  const { cartItems, removeFromCart, clearCart, getCartTotal } = useCart();
  const [showPaymentModal, setShowPaymentModal] = useState(false);
  const [albumToPurchase, setAlbumToPurchase] = useState<Album | null>(null);
  const [showSuccessModal, setShowSuccessModal] = useState(false);
  const [latestPurchase, setLatestPurchase] = useState<Purchase | null>(null);
  const [purchasedAlbums, setPurchasedAlbums] = useState<string[]>([]);

  const handleCheckout = () => {
    if (cartItems.length === 0) return;

    // For simplicity, we'll purchase the first item
    // In a real app, you'd handle multiple items differently
    if (cartItems.length > 0) {
      setAlbumToPurchase(cartItems[0].album);
      setShowPaymentModal(true);
    }
  };

  const handlePurchaseSuccess = (albumId: string, transactionId: string) => {
    const purchase: Purchase = {
      albumId,
      transactionId,
      purchaseDate: new Date(),
      approvalStatus: 'pending',
    };

    // Load existing purchases
    const savedPurchases = localStorage.getItem('purchases');
    const existingPurchases = savedPurchases ? JSON.parse(savedPurchases) : [];
    const updatedPurchases = [...existingPurchases, purchase];

    localStorage.setItem('purchases', JSON.stringify(updatedPurchases));
    // Don't add to purchasedAlbums yet - wait for approval
    setLatestPurchase(purchase);

    // Remove from cart
    removeFromCart(albumId);

    setShowPaymentModal(false);
    setShowSuccessModal(true);
  };

  const handleCloseSuccessModal = () => {
    setShowSuccessModal(false);
    setAlbumToPurchase(null);
  };

  return (
    <>
      <AnimatePresence>
        {isOpen && (
          <>
            {/* Backdrop */}
            <motion.div
              initial={{ opacity: 0 }}
              animate={{ opacity: 1 }}
              exit={{ opacity: 0 }}
              onClick={onClose}
              className="fixed inset-0 bg-paper-dark/80 z-40"
            />

            {/* Sidebar */}
            <motion.div
              initial={{ x: '100%' }}
              animate={{ x: 0 }}
              exit={{ x: '100%' }}
              transition={{ type: 'spring', damping: 30, stiffness: 300 }}
              className="fixed right-0 top-0 bottom-0 w-full md:w-96 bg-paper-sand border-l-4 border-paper-dark z-50 flex flex-col cardboard-texture"
            >
              {/* Header */}
              <div className="flex items-center justify-between p-6 border-b-2 border-paper-dark">
                <div className="flex items-center gap-3">
                  <FaShoppingCart className="text-2xl text-paper-dark" />
                  <h2 className="text-2xl font-bold text-paper-dark">
                    Cart ({cartItems.length})
                  </h2>
                </div>
                <button
                  onClick={onClose}
                  className="p-2 hover:bg-paper-brown hover:text-paper-light border-2 border-transparent hover:border-paper-dark transition-colors"
                  aria-label="Close cart"
                >
                  <FaTimes className="text-xl text-paper-dark" />
                </button>
              </div>

              {/* Cart Items */}
              <div className="flex-1 overflow-y-auto p-6">
                {cartItems.length === 0 ? (
                  <div className="flex flex-col items-center justify-center h-full text-center">
                    <FaShoppingCart className="text-6xl text-paper-gray mb-4" />
                    <p className="text-paper-dark text-lg font-medium">Your cart is empty</p>
                    <p className="text-paper-brown text-sm mt-2">Add some albums to get started</p>
                  </div>
                ) : (
                  <div className="space-y-4">
                    {cartItems.map((item) => (
                      <motion.div
                        key={item.album.id}
                        initial={{ opacity: 0, y: 20 }}
                        animate={{ opacity: 1, y: 0 }}
                        exit={{ opacity: 0, y: -20 }}
                        className="paper-card-light p-4"
                      >
                        <div className="flex gap-4">
                          {/* Album Cover */}
                          <div className="w-20 h-20 bg-paper-brown border-2 border-paper-dark flex items-center justify-center flex-shrink-0">
                            <span className="text-xs text-paper-dark/50 font-bold text-center px-2">
                              {item.album.title}
                            </span>
                          </div>

                          {/* Album Info */}
                          <div className="flex-1 min-w-0">
                            <h3 className="text-paper-dark font-semibold truncate">
                              {item.album.title}
                            </h3>
                            <p className="text-sm text-paper-brown">
                              {item.album.year} • {item.album.songs.length} tracks
                            </p>
                            <p className="text-paper-dark font-bold mt-2">
                              {formatPrice(item.album.price)}
                            </p>
                          </div>

                          {/* Remove Button */}
                          <button
                            onClick={() => removeFromCart(item.album.id)}
                            className="p-2 hover:bg-paper-brown hover:text-paper-light border-2 border-transparent hover:border-paper-dark transition-colors self-start"
                            aria-label="Remove from cart"
                          >
                            <FaTrash className="text-paper-dark" />
                          </button>
                        </div>
                      </motion.div>
                    ))}
                  </div>
                )}
              </div>

              {/* Footer */}
              {cartItems.length > 0 && (
                <div className="border-t-2 border-paper-dark p-6 space-y-4">
                  {/* Total */}
                  <div className="flex items-center justify-between text-xl p-4 paper-card-dark">
                    <span className="text-paper-light font-semibold">Total</span>
                    <span className="text-paper-sand font-bold">
                      {formatPrice(getCartTotal())}
                    </span>
                  </div>

                  {/* Buttons */}
                  <div className="space-y-3">
                    <button
                      onClick={handleCheckout}
                      className="w-full py-4 bg-paper-brown hover:bg-paper-dark border-2 border-paper-dark font-semibold text-paper-light transition-all shadow-paper-lg"
                    >
                      Proceed to Checkout
                    </button>
                    <button
                      onClick={clearCart}
                      className="w-full py-3 bg-paper-light hover:bg-paper-sand border-2 border-paper-brown font-semibold text-paper-dark transition-all shadow-paper"
                    >
                      Clear Cart
                    </button>
                  </div>
                </div>
              )}
            </motion.div>
          </>
        )}
      </AnimatePresence>

      {/* Payment Modal */}
      <PaymentModal
        album={albumToPurchase}
        onClose={() => {
          setShowPaymentModal(false);
          setAlbumToPurchase(null);
        }}
        onSuccess={handlePurchaseSuccess}
      />

      {/* Purchase Success Modal */}
      <PurchaseSuccessModal
        show={showSuccessModal}
        album={albumToPurchase}
        purchase={latestPurchase}
        onClose={handleCloseSuccessModal}
      />
    </>
  );
}