mirror of https://github.com/kremalicious/blog.git
109 lines
2.2 KiB
TypeScript
109 lines
2.2 KiB
TypeScript
import Web3 from 'web3'
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export class Logger {
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static dispatch(verb: any, ...args: any) {
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// eslint-disable-next-line no-console
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console[verb](...args)
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}
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static log(...args: any) {
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Logger.dispatch('log', ...args)
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}
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static debug(...args: any) {
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Logger.dispatch('debug', ...args)
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}
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static error(...args: any) {
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Logger.dispatch('error', ...args)
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}
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}
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export const getNetworkName = (netId: number) => {
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let networkName
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switch (netId) {
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case 1:
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networkName = 'Main'
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break
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case 2:
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networkName = 'Morden'
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break
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case 3:
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networkName = 'Ropsten'
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break
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case 4:
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networkName = 'Rinkeby'
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break
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case 42:
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networkName = 'Kovan'
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break
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default:
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networkName = 'Private'
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}
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return networkName
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}
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export const getWeb3 = async () => {
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let web3
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// Modern dapp browsers...
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if (window.ethereum) {
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web3 = new Web3(window.ethereum)
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try {
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// Request account access
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await window.ethereum.enable()
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return web3
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} catch (error) {
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// User denied account access...
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Logger.error(error)
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return error
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}
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}
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// Legacy dapp browsers...
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else if (window.web3) {
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web3 = new Web3(window.web3.currentProvider)
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return web3
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}
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// Non-dapp browsers...
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else {
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return
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}
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}
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export const getAccounts = async (web3: Web3) => {
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const ethAccounts = await web3.eth.getAccounts()
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return ethAccounts
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}
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export const getNetwork = async (web3: Web3) => {
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const netId = await web3.eth.net.getId()
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const networkName = getNetworkName(netId)
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return { netId, networkName }
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}
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export const getFiat = async (amount: number) => {
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const url = 'https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=EUR'
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try {
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const response = await fetch(url)
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if (!response.ok) Logger.error(response.statusText)
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const data = await response.json()
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/* eslint-disable @typescript-eslint/camelcase */
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const { price_usd, price_eur } = data[0]
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const dollar = (amount * price_usd).toFixed(2)
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const euro = (amount * price_eur).toFixed(2)
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/* eslint-enable @typescript-eslint/camelcase */
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return { dollar, euro }
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} catch (error) {
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Logger.error(error)
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}
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}
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