4
0
forked from crowetic/commerce
commerce/lib/cart.js
2020-10-01 20:40:40 -05:00

106 lines
2.5 KiB
JavaScript

import { useState, useCallback } from 'react'
import useSWR, { mutate } from 'swr'
async function getText(res) {
try {
return (await res.text()) || res.statusText
} catch (error) {
return res.statusText
}
}
async function getError(res) {
if (res.headers.get('Content-Type')?.includes('application/json')) {
const data = await res.json()
return data.errors[0]
}
return { message: await getText(res) }
}
async function fetcher(url) {
const res = await fetch(url)
if (res.status === 200) {
return res.json()
}
throw await getError(res)
}
export function useCart() {
return useSWR('/api/cart', fetcher)
}
export function useAddToCart() {
const [{ addingToCart, error }, setStatus] = useState({
addingToCart: false,
})
const addToCart = useCallback(async ({ product }) => {
setStatus({ addingToCart: true })
const res = await fetch('/api/cart', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ product }),
})
// Product added as expected
if (res.status === 200) {
setStatus({ addingToCart: false })
return mutate('/api/cart')
}
const error = await getError(res)
console.error('Adding product to cart failed with:', res.status, error)
setStatus({ addingToCart: false, error })
}, [])
return { addToCart, addingToCart, error }
}
export function useUpdateCart() {
const [{ updatingCart, error }, setStatus] = useState({
updatingCart: false,
})
const updateCart = useCallback(async ({ product, item }) => {
setStatus({ updatingCart: true })
const res = await fetch(
`/api/cart?itemId=${item.id}`,
product.quantity < 1
? { method: 'DELETE' }
: {
method: 'PUT',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ product }),
}
)
// Product updated as expected
if (res.status === 200) {
setStatus({ updatingCart: false })
return mutate('/api/cart')
}
const error = await getError(res)
console.error('Update to cart failed with:', res.status, error)
setStatus({ updatingCart: false, error })
}, [])
return { updateCart, updatingCart, error }
}
export function useRemoveFromCart() {
const { updateCart, updatingCart, error } = useUpdateCart()
const removeFromCart = async ({ item }) => {
updateCart({ item, product: { quantity: 0 } })
}
return { removeFromCart, removingFromCart: updatingCart, error }
}