import Link from '@/core/components/elements/Link/Link'
import useCart from '../hooks/useCart'
import Image from '@/core/components/elements/Image/Image'
import NextImage from 'next/image'
import currencyFormat from '@/core/utils/currencyFormat'
import { useEffect, useState } from 'react'
import { addCart, deleteItemCart, getCartApi, updateItemCart } from '@/core/utils/cart'
import { CheckIcon, TrashIcon } from '@heroicons/react/24/outline'
import { createSlug } from '@/core/utils/slug'
import { useRouter } from 'next/router'
import BottomPopup from '@/core/components/elements/Popup/BottomPopup'
import { toast } from 'react-hot-toast'
import Spinner from '@/core/components/elements/Spinner/Spinner'
import Alert from '@/core/components/elements/Alert/Alert'
import MobileView from '@/core/components/views/MobileView'
import DesktopView from '@/core/components/views/DesktopView'
import ProductCard from '@/lib/product/components/ProductCard'
import productSearchApi from '@/lib/product/api/productSearchApi'
import whatsappUrl from '@/core/utils/whatsappUrl'
import useAuth from '@/core/hooks/useAuth'
import LogoSpinner from '@/core/components/elements/Spinner/LogoSpinner'
import { getPromotionProgram } from '@/lib/promotinProgram/api/homepageApi'
import PromotionType from '@/lib/promotinProgram/components/PromotionType'
import { gtagBeginCheckout } from '@/core/utils/googleTag'
import { useProductCartContext } from '@/contexts/ProductCartContext'
import CardProdcuctsList from '@/core/components/elements/Product/cartProductsList'
// import cardProdcuctsList from '@/core/components/elements/Product/cartProductsList'

const Cart = () => {
  const PPN = process.env.NEXT_PUBLIC_PPN
  const router = useRouter()
  const [products, setProducts] = useState(null)
  const [isLoading, setIsLoading] = useState(true)
  const auth = useAuth()

  const [cart, setCart] = useState(null)

  const { setRefreshCart } = useProductCartContext()

  useEffect(() => {
    if (!auth) return
  }, [auth])

  const getCart = async () => {
    const listCart = await getCartApi()
    setCart(listCart)
  }

  useEffect(() => {
    getCart()
  }, [])

  useEffect(() => {
    if (cart) {
      const processProducts = async () => {
        const updatedProducts = await Promise.all(
          cart.products.map(async (product) => {
            const id = product.id
            const program = await getPromotionProgram({ id })
            const isPromo = program.length > 0 ? 1 : 0
            return {
              ...product,
              isPromo
            }
          })
        )
        setProducts(updatedProducts)
      }
      // processProducts()
      setProducts(cart.products)
      setIsLoading(false)
    }
  }, [cart])

  const [totalPriceBeforeTax, setTotalPriceBeforeTax] = useState(0)
  const [totalTaxAmount, setTotalTaxAmount] = useState(0)
  const [totalDiscountAmount, setTotalDiscountAmount] = useState(0)

  const [deleteConfirmation, setDeleteConfirmation] = useState(null)

  const [productRecomendation, setProductRecomendation] = useState(null)
  const [promotionType, setPromotionType] = useState(null)
  const [variantId, setVariantId] = useState(null)
  const [quantity, setQuantity] = useState(null)
  const [promotionActiveId, setPromotionActiveId] = useState(null)

  useEffect(() => {
    if (!products) return

    let calculateTotalPriceBeforeTax = 0
    let calculateTotalTaxAmount = 0
    let calculateTotalDiscountAmount = 0
    for (const product of products) {
      if (product.quantity == '') continue

      if (!product.selected) continue

      if (product.canBuy == false) {
        toggleSelected(product.id)
      }
      let priceBeforeTax = product.price.price / PPN
      calculateTotalPriceBeforeTax += priceBeforeTax * product.quantity
      calculateTotalTaxAmount += (product.price.price - priceBeforeTax) * product.quantity
      calculateTotalDiscountAmount +=
        (product.price.price - product.price.priceDiscount) * product.quantity
    }
    setTotalPriceBeforeTax(calculateTotalPriceBeforeTax)
    setTotalTaxAmount(calculateTotalTaxAmount)
    setTotalDiscountAmount(calculateTotalDiscountAmount)
  }, [products])

  useEffect(() => {
    const updateData = () => {
      updateItemCart({
        productId: variantId,
        quantity,
        programLineId: promotionActiveId,
        selected: true
      }).then(() => {
        getCart().then(() => {
          if (promotionActiveId) {
            setPromotionType(false)
          }
        })
      })
    }
    updateData()
  }, [promotionActiveId])

  useEffect(() => {
    const LoadProductSimilar = async () => {
      const randProductIndex = Math.floor(Math.random() * products.length)
      const productLoad = await productSearchApi({
        query: `q=${products?.[randProductIndex].parent.name}&limit=10&operation=OR`
      })

      setProductRecomendation(productLoad)
    }
    if (products?.length > 0 && !productRecomendation) LoadProductSimilar()
  }, [products, productRecomendation])

  const updateQuantity = (value, productId, operation = '') => {
    let productIndex = products.findIndex((product) => product.id == productId)
    if (productIndex < 0) return

    let productsToUpdate = products
    let quantity = productsToUpdate[productIndex].quantity
    if (value != '' && isNaN(parseInt(value))) return
    value = value != '' ? parseInt(value) : ''
    switch (operation) {
      case 'PLUS':
        quantity += value
        break
      case 'MINUS':
        if (quantity - value < 1) return
        quantity -= value
        break
      case 'BLUR':
        if (value != '' && value > 0) return
        quantity = 1
        break
      default:
        quantity = value != '' && value < 1 ? 1 : value
        break
    }
    let qty = quantity
    productsToUpdate[productIndex].quantity = qty

    setProducts([...productsToUpdate])
    addCart(
      productId,
      qty,
      productsToUpdate[productIndex].selected,
      productsToUpdate[productIndex].program?.id
    )
  }

  const toggleSelected = (productId) => {
    let productIndex = products.findIndex((product) => product.id == productId)
    if (productIndex < 0) return

    let productsToUpdate = products
    let isSelected = !productsToUpdate[productIndex].selected
    productsToUpdate[productIndex].selected = isSelected

    setProducts([...productsToUpdate])
    addCart(
      productId,
      productsToUpdate[productIndex].quantity,
      isSelected,
      productsToUpdate[productIndex].program?.id
    )
  }

  const selectedProduct = () => {
    if (!products) return []
    return products?.filter((product) => product?.selected == true)
  }

  const deleteProduct = (productId) => {
    const productsToUpdate = products.filter((product) => product.id != productId)
    deleteItemCart({ productId })
    setDeleteConfirmation(null)
    setProducts([...productsToUpdate])
    setRefreshCart(true)
    toast.success('Berhasil menghapus barang dari keranjang')
  }

  const handlePopUpPromo = (variantId, quantity, promoId = null) => {
    setPromotionType(true)
    setVariantId(variantId)
    setQuantity(quantity)
    setPromotionActiveId(promoId)
  }

  const handleCheckout = () => {
    gtagBeginCheckout(products)
    router.push('/shop/checkout')
  }

  const totalOrder = totalPriceBeforeTax - totalDiscountAmount + totalTaxAmount
  const tax = totalOrder * 0.11
  const totalPrice = totalOrder + tax

  return (
    <>
      <BottomPopup
        active={deleteConfirmation}
        close={() => setDeleteConfirmation(null)}
        title='Hapus dari Keranjang'
      >
        <div className='leading-7 text-gray_r-12/80'>
          Apakah anda yakin menghapus barang{' '}
          <span className='underline'>{deleteConfirmation?.name}</span> dari keranjang?
        </div>
        <div className='flex mt-6 gap-x-4 md:justify-end'>
          <button
            className='btn-solid-red flex-1 md:flex-none'
            type='button'
            onClick={() => deleteProduct(deleteConfirmation?.id)}
          >
            Ya, Hapus
          </button>
          <button
            className='btn-light flex-1 md:flex-none'
            type='button'
            onClick={() => setDeleteConfirmation(null)}
          >
            Batal
          </button>
        </div>
      </BottomPopup>

      <BottomPopup
        className=' !h-[75%]'
        title='Pakai Promo'
        active={promotionType}
        close={() => setPromotionType(false)}
      >
        <div className='flex mt-4'>
          <PromotionType
            isModal={true}
            variantId={variantId}
            setPromotionActiveId={setPromotionActiveId}
            promotionActiveId={promotionActiveId}
            quantity={quantity}
          ></PromotionType>
        </div>
      </BottomPopup>

      <MobileView>
        <div className='pt-4'>
          <div className='flex justify-between mb-4 px-4'>
            <h1 className='font-semibold'>Keranjang</h1>
            <Link href='/'>Cari Produk Lain</Link>
          </div>

          <div className='flex flex-col gap-y-4 h-screen'>
            {isLoading && (
              <div className='flex justify-center my-4'>
                <Spinner className='w-6 text-gray_r-12/50 fill-gray_r-12' />
              </div>
            )}

            {!isLoading && (!products || products?.length == 0) && (
              <div className='px-4'>
                <Alert className='text-center my-2' type='info'>
                  Keranjang belanja anda masih kosong
                </Alert>
              </div>
            )}

            {products &&
              products?.map((product) => (
                <>
                  {product.hasProgram > 0 && (
                    <div className='flex gap-x-2 bg-yellow-100 p-2 items-center'>
                      {product.program ? (
                        <>
                          <div className='border border-solid border-red-600 rounded-md p-1 text-caption-2 whitespace-nowrap'>
                            <span className='text-red-600'>{product.program.type.label}</span>
                          </div>
                          <div className='text-caption-2'>
                            {product.program.type.value == 'merchandise' ? (
                              <>Selamat anda mendapatkan merchandise indoteknik.com</>
                            ) : (
                              <>
                                Selamat! Pembelian anda hemat
                                <span className='text-red-600 font-semibold text-caption-2'>
                                  {' '}
                                  {currencyFormat(product.program?.totalSavings)}
                                </span>
                              </>
                            )}
                          </div>
                        </>
                      ) : (
                        <>
                          <div className='flex border border-solid border-red-600 rounded-md p-1'>
                            <span className='text-red-600'>Promo</span>
                          </div>
                          <div className='flex'>Pilih Promo Yang Tersedia Bisa lebih Hemat</div>
                        </>
                      )}
                      <div
                        onClick={() =>
                          handlePopUpPromo(product.id, product.quantity, product.program?.id)
                        }
                        className='ml-auto text-red-500 flex gap-x-0 cursor-pointer'
                      >
                        <div className='font-semibold text-caption-2 whitespace-nowrap'>
                          {' '}
                          Cek Promo
                        </div>
                        <div>
                          <svg
                            aria-hidden='true'
                            fill='none'
                            stroke='currentColor'
                            stroke-width='1.5'
                            viewBox='0 0 20 24'
                            className='h-5 w-5 font-semibold'
                          >
                            <path
                              d='M8.25 4.5l7.5 7.5-7.5 7.5'
                              stroke-linecap='round'
                              stroke-linejoin='round'
                            ></path>
                          </svg>
                        </div>
                      </div>
                    </div>
                  )}
                  <div key={product?.id} className='flex mx-4 relative'>
                    <ComponentCanBuy canBuy={product.canBuy} />
                    <input
                      type='checkbox'
                      onClick={() => toggleSelected(product.id)}
                      checked={product?.selected}
                      className='mr-2 accent-danger-500 w-4'
                    />

                    <Link
                      href={createSlug('/shop/product/', product?.parent.name, product?.parent.id)}
                      className='w-[30%] flex-shrink-0'
                    >
                      <Image
                        src={product?.parent?.image}
                        alt={product?.name}
                        className='object-contain object-center border border-gray_r-6 h-40 w-full rounded-md'
                      />
                    </Link>
                    <div className='flex-1 px-2 text-caption-2'>
                      <Link
                        href={createSlug(
                          '/shop/product/',
                          product?.parent.name,
                          product?.parent.id
                        )}
                        className='line-clamp-2 leading-6 !text-gray_r-12 font-normal'
                      >
                        {product?.parent?.name}
                      </Link>
                      <div className='text-gray_r-11 mt-1'>
                        {product?.code}{' '}
                        {product?.attributes.length > 0
                          ? `| ${product?.attributes.join(', ')}`
                          : ''}
                      </div>
                      {product?.price?.discountPercentage > 0 && (
                        <div className='flex gap-x-1 items-center mt-3'>
                          <div className='text-gray_r-11 line-through text-caption-2'>
                            {currencyFormat(product?.price?.price)}
                          </div>
                          <div className='badge-solid-red'>
                            {product?.price?.discountPercentage}%
                          </div>
                        </div>
                      )}
                      <div className='font-normal mt-1'>
                        {currencyFormat(product?.price?.priceDiscount)}
                      </div>
                      <div className='flex justify-between items-center mt-1'>
                        <div className='text-danger-500 font-medium'>
                          {currencyFormat(product?.price?.priceDiscount * product?.quantity)}
                        </div>
                        <div className='flex gap-x-1'>
                          <button
                            type='button'
                            className='btn-light px-2 py-1'
                            onClick={() => updateQuantity(1, product?.id, 'MINUS')}
                            disabled={product?.quantity == 1}
                          >
                            -
                          </button>
                          <input
                            className='form-input w-6 border-0 border-b rounded-none py-1 px-0 text-center'
                            type='number'
                            value={product?.quantity}
                            onChange={(e) => updateQuantity(e.target.value, product?.id)}
                            onBlur={(e) => updateQuantity(e.target.value, product?.id, 'BLUR')}
                          />
                          <button
                            type='button'
                            className='btn-light px-2 py-1'
                            onClick={() => updateQuantity(1, product?.id, 'PLUS')}
                          >
                            +
                          </button>
                          <button
                            className='btn-red p-1 ml-1'
                            onClick={() => setDeleteConfirmation(product)}
                          >
                            <TrashIcon className='w-4' />
                          </button>
                        </div>
                      </div>
                    </div>
                  </div>
                  {product.program &&
                    product.program.items &&
                    product.program.items.map((item) => (
                      <div key={item.id} className='flex mx-4 relative'>
                        <ComponentCanBuy canBuy={product.canBuy} />
                        <input className='mr-2 accent-danger-500 w-4' />
                        <Link
                          href={createSlug(
                            '/shop/product/',
                            product?.parent.name,
                            product?.parent.id
                          )}
                          className='w-[30%] flex-shrink-0'
                        >
                          <Image
                            src={item?.parent?.image}
                            alt={item?.name}
                            className='object-contain object-center border border-gray_r-6 h-40 w-full rounded-md'
                          />
                        </Link>
                        <div className='flex-1 px-2 text-caption-2'>
                          <Link
                            href={createSlug(
                              '/shop/product/',
                              product?.parent.name,
                              product?.parent.id
                            )}
                            className='line-clamp-2 leading-6 !text-gray_r-12 font-normal'
                          >
                            <div className='px-2 text-left mt-2'>
                              <div className='mb-2'>
                                <span className='border border-solid border-red-600 rounded-md p-1 text-red-600'>
                                  {product.program.type.label}
                                </span>
                              </div>
                              <div>{item.name}</div>
                            </div>
                          </Link>
                          {item.price?.discountPercentage > 0 && (
                            <div className='flex gap-x-1 items-center mt-3 ml-3'>
                              <div className='text-gray_r-11 line-through text-caption-2'>
                                {currencyFormat(item?.price?.price)}
                              </div>
                            </div>
                          )}
                          <div className='text-danger-500 font-medium mt-1 ml-3'>Gratis</div>
                        </div>
                      </div>
                    ))}
                </>
              ))}

            <div className='sticky bottom-0 left-0 w-full p-4 mt-auto border-t border-gray_r-6 bg-white'>
              <div className='flex flex-col gap-y-3 mb-4'>
                <div className='text-gray_r-11 flex justify-between'>
                  <span>Total Pesanan</span>
                  <span className='text-gray_r-12'>{currencyFormat(totalOrder)}</span>
                </div>
                <div className='text-gray_r-11 flex justify-between'>
                  PPN 11%
                  <span className='text-gray_r-12'>{currencyFormat(tax)}</span>
                </div>
                <hr />
                <div className='text-gray_r-12 flex font-semibold justify-between'>
                  Total Harga:
                  <span className='text-danger-500'>{currencyFormat(totalPrice)}</span>
                </div>
              </div>
              <div className='flex gap-x-3'>
                <button
                  type='button'
                  className='btn-yellow flex-1'
                  disabled={selectedProduct().length == 0}
                  onClick={() => router.push('/shop/quotation')}
                >
                  Quotation
                </button>
                <button
                  type='button'
                  className='btn-solid-red flex-1'
                  disabled={selectedProduct().length == 0}
                  onClick={() => router.push('/shop/checkout')}
                >
                  Checkout
                </button>
              </div>
            </div>
          </div>
        </div>
      </MobileView>

      <DesktopView>
        <div className='container mx-auto py-10 grid grid-cols-12'>
          <div className='col-span-9 border border-gray_r-6 rounded bg-white p-4 pt-6'>
            <h1 className='text-title-sm font-semibold mb-6'>Keranjang</h1>

            <CardProdcuctsList isLoading={isLoading} products={products} source='cart' handlePopUpPromo ={handlePopUpPromo} toggleSelected ={toggleSelected} updateQuantity ={updateQuantity} setDeleteConfirmation ={setDeleteConfirmation}/>

            <div className='pt-2 pb-6 flex items-center gap-x-3'>
              <NextImage
                src='/images/logo-question.png'
                alt='Logo Question Indoteknik'
                width={60}
                height={60}
              />
              <div className='text-gray_r-12/90'>
                Tanya stock untuk pembelian anda sebelum melanjutkan pembayaran!
                <span>
                  {' '}
                  <a href={whatsappUrl()} className='text-danger-500'>
                    Hubungi Kami
                  </a>
                </span>
              </div>
            </div>
          </div>

          <div className='col-span-3 pl-4'>
            <div className='sticky top-48 w-full p-4 rounded border border-gray_r-6 bg-white'>
              <h1 className='text-title-sm font-semibold mb-6'>Ringkasan Belanja</h1>
              <div className='flex flex-col gap-y-3 mb-4'>
                <div className='text-gray_r-11 flex justify-between'>
                  <span>Total Pesanan</span>
                  <span className='text-gray_r-12'>{currencyFormat(totalOrder)}</span>
                </div>
                <div className='text-gray_r-11 flex justify-between'>
                  PPN 11%
                  <span className='text-gray_r-12'>{currencyFormat(tax)}</span>
                </div>
                <hr />
                <div className='text-gray_r-12 flex font-semibold justify-between'>
                  Total Harga:
                  <span className='text-danger-500'>{currencyFormat(totalPrice)}</span>
                </div>
              </div>
              <div className='flex gap-x-3'>
                <button
                  type='button'
                  className='btn-yellow flex-1'
                  disabled={selectedProduct().length == 0}
                  onClick={() => router.push('/shop/quotation')}
                >
                  Quotation
                </button>
                <button
                  type='button'
                  className='btn-solid-red flex-1'
                  disabled={selectedProduct().length == 0}
                  onClick={handleCheckout}
                >
                  Checkout
                </button>
              </div>
            </div>
          </div>

          <div className='col-span-9 pt-2 pb-6 mt-6'>
            <h1 className='text-title-sm font-semibold mb-6'>Produk Yang Mungkin Kamu Suka</h1>
            <div className='grid grid-cols-5 gap-x-3 gap-y-6'>
              {productRecomendation &&
                productRecomendation.response.products.map((product) => (
                  <ProductCard product={product} key={product.id} />
                ))}
            </div>
          </div>
        </div>
      </DesktopView>
    </>
  )
}

const ComponentCanBuy = ({ canBuy }) =>
  !canBuy && <div className='absolute w-full h-full bg-gray_r-3/40 top-0 left-0' />

export default Cart