const axios = require('axios')
const { Assert, Click, Wait } = require('./library')

/**
 * @param {puppeteer.Page} page Puppeteer Page object returned by `browser.newPage()`
 * @returns {Promise<string>} Swarm hash
 */
async function selectStampAndUpload(page) {
  await Click.elementWithText(page, 'button', 'Add Postage Stamp')
  // select the first available stamp
  await page.click('[role="combobox"]') // Click the select trigger
  await page.click('[role="option"]') // Click first option in the dropdown
  await Wait.forEnabledStateXPath(page, 'button', 'Proceed With Selected Stamp')
  await Click.elementWithText(page, 'button', 'Proceed With Selected Stamp')
  await Wait.forElementXPath(page, "//button[contains(., 'Upload To Your Node')]")
  await Click.elementWithText(page, 'button', 'Upload To Your Node')
  await Wait.forElementXPath(page, "//button[contains(., 'Download')]")
  // check if the upload was successful
  await Assert.elementWithTextExists(page, 'button', 'Download')
  await Assert.elementWithTextExists(page, 'button', 'Update Feed')

  // get the swarm hash
  return page.url().split('/').pop()
}

async function assertUploadedContentAtPath(swarmHash, path, contentType) {
  const response = await axios.get(`http://localhost:1633/bzz/${swarmHash}/${encodeURI(path)}`)

  if (response.status !== 200) {
    throw new Error(`Expected 200 OK, got ${response.status}`)
  }

  if (response.headers['content-type'] !== contentType) {
    throw new Error(`Expected content-type ${contentType}, got ${response.headers['content-type']}`)
  }

  const { data } = response

  if (data.length === 0) {
    throw new Error(`Expected non-empty data, got ${data}`)
  }
}

module.exports = { selectStampAndUpload, assertUploadedContentAtPath }