Using MetaMask with Puppeteer

index.js

/*
  Get MetaMask here: https://github.com/MetaMask/metamask-extension/releases
*/


const puppeteer = require('puppeteer')
let extId

async function main() {
    const metamaskPath = path.join(__dirname, '/metamask-chrome-10.0.2')
    const browser = await puppeteer.launch({
        headless: false,
        args: [
            `--disable-extensions-except=${metamaskPath}`,
            `--load-extension=${metamaskPath}`,
            `--enable-automation`,
            `--window-size=1280,720`
        ]
    }) 
    const seed = 'filter shadow option...' // your wallet seed
    //await initMetaMask(browser, seed, password)
    await initMetaMask(browser, seed)

    await loginOpensea(browser)
    // do whatever u want
    await browser.close()
}

main()

async function getMetaMaskPage(browser, page = 'notification') {
    return new Promise((resolve, reject) => {
        browser.on('targetcreated', async target => {
            if (target.url().startsWith(`chrome-extension://${extId}/${page}.html`)) {
                try {
                    const page = await target.page()
                    resolve(page)
                } catch (e) {
                    reject(e)
                }
            } else if (!extId && target.url().startsWith(`chrome-extension://`)) {
                try {
                    const metaMaskExtID = target.url().split('/')[2]
                    extId = metaMaskExtID

                    console.log(`Extension ID: ${extId}`)
                    const page = await target.page()
                    resolve(page)
                } catch (e) {
                    reject(e)
                }
            }
        })
    })
}
async function initMetaMask(
    browser,
    seed,
    password = 'password1234'
) {
    const metamaskpage = await getMetaMaskPage(browser, 'home')

    await metamaskpage.goto(`chrome-extension://${extId}/home.html#initialize/create-password/import-with-seed-phrase`)

    const seedInput = await metamaskpage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div/form/div[4]/div[1]/div/input')
    await seedInput.type(seed)

    const passwordInput = await metamaskpage.waitForXPath('//*[@id="password"]')
    await passwordInput.type(password)

    const confirmPasswordInput = await metamaskpage.waitForXPath('//*[@id="confirm-password"]')
    await confirmPasswordInput.type(password)

    const acceptTerms = await metamaskpage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div/form/div[7]/div')
    await acceptTerms.click()

    const importBtn = await metamaskpage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div/form/button')
    await importBtn.click()

    const doneBtn = await metamaskpage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div/button')
    await doneBtn.click()

    const whatsNewClose = await metamaskpage.waitForXPath('//*[@id="popover-content"]/div/div/section/header/div/button')
    await whatsNewClose.click()

    await metamaskpage.close()

    console.log(`Successfully imported account.`)
}

async function loginOpensea(browser) {
    let page = await browser.newPage()
    await page.goto('https://opensea.io/wallet/locked')
    let signinBtn = await page.waitForXPath('//*[@id="__next"]/div[1]/main/div/div/div/div[1]/div[2]/button')
    await signinBtn.click()

    let notifPage = await getMetaMaskPage(browser, 'notification')
    let nextBtn = await notifPage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div[2]/div[4]/div[2]/button[2]')
    await nextBtn.click()
    let connBtn = await notifPage.waitForXPath('//*[@id="app-content"]/div/div[3]/div/div[2]/div[2]/div[2]/footer/button[2]')
    await connBtn.click()

    await page.close()
    console.log(`Successfully connected to Opensea.`)
}

async function signMessage(browser) {
    let notifPage = await getMetaMaskPage(browser, 'notification')

    let signBtn = await notifPage.waitForSelector('[data-testid="request-signature__sign"]')
    await signBtn.click()
}