import { ChangeEvent, useEffect, useState } from 'react'
import cn from 'classnames'
import Image from 'next/image'
import Link from 'next/link'
import { Trash, Plus, Minus } from '@components/icons'
import usePrice from '@framework/use-price'
import useUpdateItem from '@framework/cart/use-update-item'
import useRemoveItem from '@framework/cart/use-remove-item'
import s from './CartItem.module.css'

type ItemOption = {
  name: string,
  nameId: number,
  value: string,
  valueId: number
}

const CartItem = ({
  item,
  currencyCode,
}: {
  item: any
  currencyCode: string
}) => {
  const { price } = usePrice({
    amount: item.extended_sale_price,
    baseAmount: item.extended_list_price,
    currencyCode,
  })
  const updateItem = useUpdateItem(item)
  const removeItem = useRemoveItem()
  const [quantity, setQuantity] = useState(item.quantity)
  const [removing, setRemoving] = useState(false)
  const updateQuantity = async (val: number) => {
    await updateItem({ quantity: val })
  }
  const handleQuantity = (e: ChangeEvent<HTMLInputElement>) => {
    const val = Number(e.target.value)

    if (Number.isInteger(val) && val >= 0) {
      setQuantity(e.target.value)
    }
  }
  const handleBlur = () => {
    const val = Number(quantity)

    if (val !== item.quantity) {
      updateQuantity(val)
    }
  }
  const increaseQuantity = (n = 1) => {
    const val = Number(quantity) + n

    if (Number.isInteger(val) && val >= 0) {
      setQuantity(val)
      updateQuantity(val)
    }
  }
  const handleRemove = async () => {
    setRemoving(true)

    try {
      // If this action succeeds then there's no need to do `setRemoving(true)`
      // because the component will be removed from the view
      await removeItem({ id: item.id })
    } catch (error) {
      setRemoving(false)
    }
  }

  useEffect(() => {
    // Reset the quantity state if the item quantity changes
    if (item.quantity !== Number(quantity)) {
      setQuantity(item.quantity)
    }
  }, [item.quantity])

  return (
    <li
      className={cn('flex flex-row space-x-8 py-8', {
        'opacity-75 pointer-events-none': removing,
      })}
    >
      <div className="w-16 h-16 bg-violet relative overflow-hidden">
        <Image
          className={s.productImage}
          src={item.image_url}
          width={150}
          height={150}
          alt="Product Image"
          // The cart item image is already optimized and very small in size
          unoptimized
        />
      </div>
      <div className="flex-1 flex flex-col text-base">
        {/** TODO: Replace this. No `path` found at Cart */}
        <Link href={`/product/${item.url.split('/')[3]}`}>
          <span className="font-bold mb-2 text-lg cursor-pointer">
            {item.name}
          </span>
        </Link>
        {item.options && item.options.length > 0 ? (
          <div className="flex flex-col mb-2">
            {item.options.map((option:ItemOption) =>
              <span key={`${item.id}-${option.name}`} className="text-sm">
                {`${option.name}: ${option.value}`}
              </span>
            )}
          </div>
        ) : null}
        <div className="flex items-center">
          <button type="button" onClick={() => increaseQuantity(-1)}>
            <Minus width={18} height={18} />
          </button>
          <label>
            <input
              type="number"
              max={99}
              min={0}
              className={s.quantity}
              value={quantity}
              onChange={handleQuantity}
              onBlur={handleBlur}
            />
          </label>
          <button type="button" onClick={() => increaseQuantity(1)}>
            <Plus width={18} height={18} />
          </button>
        </div>
      </div>
      <div className="flex flex-col justify-between space-y-2 text-base">
        <span>{price}</span>
        <button className="flex justify-end" onClick={handleRemove}>
          <Trash />
        </button>
      </div>
    </li>
  )
}

export default CartItem
