const path = require('path')
const assert = require('assert')
const webdriver = require('selenium-webdriver')
const { By, until } = webdriver
const {
  delay,
  buildChromeWebDriver,
  buildFirefoxWebdriver,
  installWebExt,
  getExtensionIdChrome,
  getExtensionIdFirefox,
} = require('../func')
const {
  checkBrowserForConsoleErrors,
  closeAllWindowHandlesExcept,
  findElement,
  findElements,
  loadExtension,
  verboseReportOnFailure,
} = require('./helpers')
const fetchMockResponses = require('./fetch-mocks.js')

describe('MetaMask', function () {
  let extensionId
  let driver

  const testSeedPhrase = 'phrase upgrade clock rough situate wedding elder clever doctor stamp excess tent'
  const tinyDelayMs = 200
  const regularDelayMs = tinyDelayMs * 2
  const largeDelayMs = regularDelayMs * 2

  this.timeout(0)
  this.bail(true)

  before(async function () {
    let extensionUrl
    switch (process.env.SELENIUM_BROWSER) {
      case 'chrome': {
        const extPath = path.resolve('dist/chrome')
        driver = buildChromeWebDriver(extPath, { responsive: true })
        extensionId = await getExtensionIdChrome(driver)
        await delay(largeDelayMs)
        extensionUrl = `chrome-extension://${extensionId}/home.html`
        break
      }
      case 'firefox': {
        const extPath = path.resolve('dist/firefox')
        driver = buildFirefoxWebdriver({ responsive: true })
        await installWebExt(driver, extPath)
        await delay(largeDelayMs)
        extensionId = await getExtensionIdFirefox(driver)
        extensionUrl = `moz-extension://${extensionId}/home.html`
        break
      }
    }
    // Depending on the state of the application built into the above directory (extPath) and the value of
    // METAMASK_DEBUG we will see different post-install behaviour and possibly some extra windows. Here we
    // are closing any extraneous windows to reset us to a single window before continuing.
    const [tab1] = await driver.getAllWindowHandles()
    await closeAllWindowHandlesExcept(driver, [tab1])
    await driver.switchTo().window(tab1)
    await driver.get(extensionUrl)
  })

  beforeEach(async function () {
    await driver.executeScript(
      'window.origFetch = window.fetch.bind(window);' +
      'window.fetch = ' +
      '(...args) => { ' +
      'if (args[0] === "https://ethgasstation.info/json/ethgasAPI.json") { return ' +
      'Promise.resolve({ json: () => Promise.resolve(JSON.parse(\'' + fetchMockResponses.ethGasBasic + '\')) }); } else if ' +
      '(args[0] === "https://ethgasstation.info/json/predictTable.json") { return ' +
      'Promise.resolve({ json: () => Promise.resolve(JSON.parse(\'' + fetchMockResponses.ethGasPredictTable + '\')) }); } else if ' +
      '(args[0].match(/chromeextensionmm/)) { return ' +
      'Promise.resolve({ json: () => Promise.resolve(JSON.parse(\'' + fetchMockResponses.metametrics + '\')) }); } else if ' +
      '(args[0] === "https://dev.blockscale.net/api/gasexpress.json") { return ' +
      'Promise.resolve({ json: () => Promise.resolve(JSON.parse(\'' + fetchMockResponses.gasExpress + '\')) }); } ' +
      'return window.origFetch(...args); };' +
      'function cancelInfuraRequest(requestDetails) {' +
        'console.log("Canceling: " + requestDetails.url);' +
        'return {' +
          'cancel: true' +
        '};' +
     ' }' +
      'window.chrome && window.chrome.webRequest && window.chrome.webRequest.onBeforeRequest.addListener(' +
        'cancelInfuraRequest,' +
        '{urls: ["https://*.infura.io/*"]},' +
        '["blocking"]' +
      ');'
    )
  })

  afterEach(async function () {
    if (process.env.SELENIUM_BROWSER === 'chrome') {
      const errors = await checkBrowserForConsoleErrors(driver)
      if (errors.length) {
        const errorReports = errors.map(err => err.message)
        const errorMessage = `Errors found in browser console:\n${errorReports.join('\n')}`
        console.error(new Error(errorMessage))
      }
    }
    if (this.currentTest.state === 'failed') {
      await verboseReportOnFailure(driver, this.currentTest)
    }
  })

  after(async function () {
    await driver.quit()
  })

  describe('Going through the first time flow', () => {
      it('clicks the continue button on the welcome screen', async () => {
        await findElement(driver, By.css('.welcome-page__header'))
        const welcomeScreenBtn = await findElement(driver, By.css('.first-time-flow__button'))
        welcomeScreenBtn.click()
        await delay(largeDelayMs)
      })

      it('clicks the "Create New Wallet" option', async () => {
        const customRpcButton = await findElement(driver, By.xpath(`//button[contains(text(), 'Create a Wallet')]`))
        customRpcButton.click()
        await delay(largeDelayMs)
      })

      it('clicks the "I agree" option on the metametrics opt-in screen', async () => {
        const optOutButton = await findElement(driver, By.css('.btn-primary'))
        optOutButton.click()
        await delay(largeDelayMs)
      })

      it('accepts a secure password', async () => {
        const passwordBox = await findElement(driver, By.css('.first-time-flow__form #create-password'))
        const passwordBoxConfirm = await findElement(driver, By.css('.first-time-flow__form #confirm-password'))
        const button = await findElement(driver, By.css('.first-time-flow__form button'))

        await passwordBox.sendKeys('correct horse battery staple')
        await passwordBoxConfirm.sendKeys('correct horse battery staple')

        const tosCheckBox = await findElement(driver, By.css('.first-time-flow__checkbox'))
        await tosCheckBox.click()

        await button.click()
        await delay(regularDelayMs)
      })

      let seedPhrase

      it('reveals the seed phrase', async () => {
        const byRevealButton = By.css('.reveal-seed-phrase__secret-blocker .reveal-seed-phrase__reveal-button')
        await driver.wait(until.elementLocated(byRevealButton, 10000))
        const revealSeedPhraseButton = await findElement(driver, byRevealButton, 10000)
        await revealSeedPhraseButton.click()
        await delay(regularDelayMs)

        seedPhrase = await driver.findElement(By.css('.reveal-seed-phrase__secret-words')).getText()
        assert.equal(seedPhrase.split(' ').length, 12)
        await delay(regularDelayMs)

        const nextScreen = await findElement(driver, By.css('button.first-time-flow__button'))
        await nextScreen.click()
        await delay(regularDelayMs)
      })

      async function clickWordAndWait (word) {
        const xpath = `//div[contains(@class, 'confirm-seed-phrase__seed-word--shuffled') and not(contains(@class, 'confirm-seed-phrase__seed-word--selected')) and contains(text(), '${word}')]`
        const word0 = await findElement(driver, By.xpath(xpath), 10000)

        await word0.click()
        await delay(tinyDelayMs)
      }

      async function retypeSeedPhrase (words, wasReloaded, count = 0) {
        try {
          if (wasReloaded) {
            const byRevealButton = By.css('.reveal-seed-phrase__secret-blocker .reveal-seed-phrase__reveal-button')
            await driver.wait(until.elementLocated(byRevealButton, 10000))
            const revealSeedPhraseButton = await findElement(driver, byRevealButton, 10000)
            await revealSeedPhraseButton.click()
            await delay(regularDelayMs)

            const nextScreen = await findElement(driver, By.css('button.first-time-flow__button'))
            await nextScreen.click()
            await delay(regularDelayMs)
          }

          for (let i = 0; i < 12; i++) {
            await clickWordAndWait(words[i])
          }
        } catch (e) {
          if (count > 2) {
            throw e
          } else {
            await loadExtension(driver, extensionId)
            await retypeSeedPhrase(words, true, count + 1)
          }
        }
      }

      it('can retype the seed phrase', async () => {
        const words = seedPhrase.split(' ')

        await retypeSeedPhrase(words)

        const confirm = await findElement(driver, By.xpath(`//button[contains(text(), 'Confirm')]`))
        await confirm.click()
        await delay(regularDelayMs)
      })

      it('clicks through the success screen', async () => {
        await findElement(driver, By.xpath(`//div[contains(text(), 'Congratulations')]`))
        const doneButton = await findElement(driver, By.css('button.first-time-flow__button'))
        await doneButton.click()
        await delay(regularDelayMs)
      })
    })

  describe('Show account information', () => {
    it('show account details dropdown menu', async () => {
      await driver.findElement(By.css('div.menu-bar__open-in-browser')).click()
      const options = await driver.findElements(By.css('div.menu.account-details-dropdown div.menu__item'))
      assert.equal(options.length, 3) // HD Wallet type does not have to show the Remove Account option
      await delay(regularDelayMs)
    })
  })

  describe('Import seed phrase', () => {
    it('logs out of the vault', async () => {
      await driver.findElement(By.css('.account-menu__icon')).click()
      await delay(regularDelayMs)

      const logoutButton = await findElement(driver, By.css('.account-menu__logout-button'))
      assert.equal(await logoutButton.getText(), 'Log out')
      await logoutButton.click()
      await delay(regularDelayMs)
    })

    it('imports seed phrase', async () => {
      const restoreSeedLink = await findElement(driver, By.css('.unlock-page__link--import'))
      assert.equal(await restoreSeedLink.getText(), 'Import using account seed phrase')
      await restoreSeedLink.click()
      await delay(regularDelayMs)

      const seedTextArea = await findElement(driver, By.css('textarea'))
      await seedTextArea.sendKeys(testSeedPhrase)
      await delay(regularDelayMs)

      const passwordInputs = await driver.findElements(By.css('input'))
      await delay(regularDelayMs)

      await passwordInputs[0].sendKeys('correct horse battery staple')
      await passwordInputs[1].sendKeys('correct horse battery staple')
      await driver.findElement(By.css('.first-time-flow__button')).click()
      await delay(regularDelayMs)
    })

    it('switches to localhost', async () => {
      const networkDropdown = await findElement(driver, By.css('.network-name'))
      await networkDropdown.click()
      await delay(regularDelayMs)

      const [localhost] = await findElements(driver, By.xpath(`//span[contains(text(), 'Localhost')]`))
      await localhost.click()
      await delay(largeDelayMs * 2)
    })

    it('balance renders', async () => {
      const balance = await findElement(driver, By.css('.transaction-view-balance__primary-balance'))
      await driver.wait(until.elementTextMatches(balance, /100\s*ETH/))
      await delay(regularDelayMs)
    })
  })

  describe('Send ETH from inside MetaMask', () => {
    it('starts to send a transaction', async function () {
      const sendButton = await findElement(driver, By.xpath(`//button[contains(text(), 'Send')]`))
      await sendButton.click()
      await delay(regularDelayMs)

      const inputAddress = await findElement(driver, By.css('input[placeholder="Recipient Address"]'))
      const inputAmount = await findElement(driver, By.css('.unit-input__input'))
      await inputAddress.sendKeys('0x2f318C334780961FB129D2a6c30D0763d9a5C970')
      await inputAmount.sendKeys('1')

      const inputValue = await inputAmount.getAttribute('value')
      assert.equal(inputValue, '1')
      await delay(regularDelayMs)
    })

    it('opens and closes the gas modal', async function () {
      // Set the gas limit
      const configureGas = await findElement(driver, By.css('.advanced-gas-options-btn'))
      await configureGas.click()
      await delay(regularDelayMs)

      const gasModal = await driver.findElement(By.css('span .modal'))

      const save = await findElement(driver, By.css('.page-container__header-close-text'))
      await save.click()
      await driver.wait(until.stalenessOf(gasModal), 10000)
      await delay(regularDelayMs)
    })

    it('clicks through to the confirm screen', async function () {
      // Continue to next screen
      const nextScreen = await findElement(driver, By.xpath(`//button[contains(text(), 'Next')]`))
      await nextScreen.click()
      await delay(regularDelayMs)
    })

    it('confirms the transaction', async function () {
      const confirmButton = await findElement(driver, By.xpath(`//button[contains(text(), 'Confirm')]`))
      await confirmButton.click()
      await delay(largeDelayMs)
    })

    it('finds the transaction in the transactions list', async function () {
      const transactions = await findElements(driver, By.css('.transaction-list-item'))
      assert.equal(transactions.length, 1)

      if (process.env.SELENIUM_BROWSER !== 'firefox') {
        const txValues = await findElement(driver, By.css('.transaction-list-item__amount--primary'))
        await driver.wait(until.elementTextMatches(txValues, /-1\s*ETH/), 10000)
      }
    })
  })
})