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Copy pathbrowser.ts
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309 lines (261 loc) · 6.89 KB
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import type { StartResearchContext, StartResearchOptions } from './type'
import puppeteer, { Page, PuppeteerLifeCycleEvent } from 'puppeteer'
import fs from 'fs'
import { summarizeImportantHTML } from './html'
export async function startBrowser({
context,
options
}: {
context: StartResearchContext
options: StartResearchOptions
}) {
if (context.thePage) {
return context.thePage
}
context.browser = await puppeteer.launch({
headless: options.headless ? 'new' : false
})
const page = await context.browser.newPage()
await page.setViewport({
width: 1200,
height: 1200,
deviceScaleFactor: 1
})
page.on('request', (request) => {
if (context.requestBlock) {
if (request.isNavigationRequest()) {
request.respond({
status: 200,
contentType: 'application/octet-stream',
body: 'Dummy file to block navigation'
})
} else {
request.continue()
}
}
context.requestCount++
})
page.on('load', () => {
if (options.debug) {
options.logger('Page loaded')
}
context.pageLoaded = true
})
page.on('framenavigated', async (frame) => {
if (frame === page.mainFrame()) {
await frame.waitForNavigation({ waitUntil: 'networkidle0' })
if (context.pageLoaded && options.debug) {
options.logger('Loading page...')
}
context.pageLoaded = false
}
})
page.on('response', async (response) => {
context.responseCount++
let headers = response.headers()
if (
headers['content-disposition']?.includes('attachment') ||
Number(headers['content-length']) > 1024 * 1024 ||
headers['content-type'] === 'application/octet-stream'
) {
setTimeout(function () {
if (context.responseCount == 1) {
options.logger('DOWNLOAD: A file download has been detected')
context.downloaStarted = true
}
}, 2000)
}
})
context.thePage = page
return context.thePage
}
export async function getNextTab(page: Page, element, id, selector = '*') {
let obj = await page.evaluate(
async (element, id, selector) => {
if (!element.matches(selector)) {
return false
}
const tagName = element.tagName
if (tagName === 'BODY') {
return false
}
let textContent = element.textContent.replace(/\s+/g, ' ').trim()
if (textContent === '' && !element.matches('select, input, textarea')) {
return false
}
element.classList.add('pgpt-element' + id)
let role = element.role
let placeholder = element.placeholder
let title = element.title
let type = element.type
let href = element.href
let value = element.value
if (href && href.length > 32) {
href = href.substring(0, 32) + '[..]'
}
if (placeholder && placeholder.length > 32) {
placeholder = placeholder.substring(0, 32) + '[..]'
}
if (!textContent && title && title.length > 32) {
title = title.substring(0, 32) + '[..]'
}
if (textContent && textContent.length > 200) {
textContent = textContent.substring(0, 200) + '[..]'
}
let tag = `<${tagName}`
if (href) {
tag += ` href="${href}"`
}
if (type) {
tag += ` type="${type}"`
}
if (placeholder) {
tag += ` placeholder="${placeholder}"`
}
if (title) {
tag += ` title="${title}"`
}
if (role) {
tag += ` role="${role}"`
}
if (value) {
tag += ` value="${value}"`
}
tag += `>`
let obj: Record<string, any> = {
tag: tag,
id: id
}
if (textContent) {
obj.text = textContent
}
return obj
},
element,
id,
selector
)
if (!obj) {
return false
}
const visible = await page.evaluate(async (id) => {
const element = document.querySelector('.pgpt-element' + id) as HTMLElement
if (!element) {
return false
}
const visibility = element.style.visibility
const display = element.style.display
const clip = element.style.clip
const rect = element.getBoundingClientRect()
return (
visibility !== 'hidden' &&
display !== 'none' &&
rect.width != 0 &&
rect.height != 0 &&
clip !== 'rect(1px, 1px, 1px, 1px)' &&
clip !== 'rect(0px, 0px, 0px, 0px)'
)
}, id)
if (!visible) {
return false
} else {
await page.evaluate(async (id) => {
const element = document.querySelector(
'.pgpt-element' + id
) as HTMLElement
element.setAttribute('pgpt-id', id)
element.style.border = '1px solid red'
}, id)
}
return obj
}
export async function getTabbableElements({
page,
selector = '*',
options
}: {
page: Page
selector?: string
options: StartResearchOptions
}) {
let tabbable_elements = []
let skipped = []
let id = 0
let elements = await page.$$(
'input:not([type=hidden]):not([disabled]), textarea:not([disabled]), button:not([disabled]), [tabindex]:not([tabindex="-1"]), select:not([disabled]), a[href]:not([href="javascript:void(0)"]):not([href="#"])'
)
let limit = 400
for (const element of elements) {
if (--limit < 0) {
break
}
const next_tab = await getNextTab(page, element, ++id, selector)
if (next_tab !== false) {
tabbable_elements.push(next_tab)
}
}
if (options.debug) {
fs.writeFileSync('skipped.json', JSON.stringify(skipped, null, 2))
}
if (options.debug) {
fs.writeFileSync(
'tabbable.json',
JSON.stringify(tabbable_elements, null, 2)
)
}
return tabbable_elements
}
/**
* get_page_content -> getPageContent
*/
export async function getPageContent(page: Page) {
const title = await page.evaluate(() => {
return document.title
})
const html = await page.evaluate(() => {
return document.body.innerHTML
})
return (
'## START OF PAGE CONTENT ##\nTitle: ' +
title +
'\n\n' +
summarizeImportantHTML(html) +
'\n## END OF PAGE CONTENT ##'
)
}
/**
* check_download_error -> checkDownloadError
*/
export function checkDownloadError({
error,
options
}: {
error: Error
options: StartResearchOptions
}) {
if (error instanceof Error && error.message.startsWith('net::ERR_ABORTED')) {
return 'NOTICE: The connection was aborted. If you clicked on a download link, the file has been downloaded to the default Chrome downloads location.'
} else if (options.debug) {
options.logger(String(error))
}
return null
}
/**
* wait_for_navigation -> waitForNavigation
*/
export async function waitForNavigation({
page,
options
}: {
page: Page
options: StartResearchOptions
}) {
try {
await page.waitForNavigation({
timeout: options.navigationTimeout,
waitUntil: options.waitUntil as PuppeteerLifeCycleEvent
})
} catch (error) {
options.logger('NOTICE: Giving up on waiting for navigation')
}
}