88 lines
1.9 KiB
JavaScript
88 lines
1.9 KiB
JavaScript
import React, { useContext, useEffect, useState } from 'react'
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import { Button } from 'react-bootstrap'
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import useSWR from 'swr'
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import { fixedDecimal } from '../lib/format'
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const fetcher = url => fetch(url).then(res => res.json()).catch()
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export const PriceContext = React.createContext({
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price: null
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})
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const ENDPOINT = 'https://api.coinbase.com/v2/prices/BTC-USD/spot'
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export async function getPrice () {
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const data = await fetcher(ENDPOINT)
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return data?.data?.amount
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}
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export function PriceProvider ({ price, children }) {
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const { data } = useSWR(
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ENDPOINT,
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fetcher,
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{
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refreshInterval: 30000
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})
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const contextValue = {
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price: data?.data?.amount || price
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}
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return (
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<PriceContext.Provider value={contextValue}>
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{children}
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</PriceContext.Provider>
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)
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}
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export function usePrice () {
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const { price } = useContext(PriceContext)
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return price
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}
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export default function Price () {
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const [asSats, setAsSats] = useState(undefined)
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useEffect(() => {
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setAsSats(localStorage.getItem('asSats'))
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}, [])
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const price = usePrice()
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if (!price) return null
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const handleClick = () => {
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if (asSats === 'yep') {
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localStorage.setItem('asSats', '1btc')
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setAsSats('1btc')
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} else if (asSats === '1btc') {
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localStorage.removeItem('asSats')
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setAsSats(undefined)
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} else {
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localStorage.setItem('asSats', 'yep')
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setAsSats('yep')
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}
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}
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if (asSats === 'yep') {
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return (
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<Button className='text-reset p-0' onClick={handleClick} variant='link'>
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{fixedDecimal(100000000 / price, 0) + ' sats/$'}
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</Button>
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)
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}
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if (asSats === '1btc') {
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return (
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<Button className='text-reset p-0' onClick={handleClick} variant='link'>
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1sat=1sat
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</Button>
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)
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}
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return (
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<Button className='text-reset p-0' onClick={handleClick} variant='link'>
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{'$' + fixedDecimal(price, 0)}
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</Button>
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)
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}
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