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@ -102,7 +102,7 @@ export async function scrapeController(req: Request, res: Response) {
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return res.status(status).json({ error });
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}
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const crawlerOptions = req.body.crawlerOptions ?? {};
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const pageOptions = req.body.pageOptions ?? { onlyMainContent: false, includeHtml: false, waitFor: 0 };
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const pageOptions = req.body.pageOptions ?? { onlyMainContent: false, includeHtml: false, waitFor: 0, screenshot: false };
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const extractorOptions = req.body.extractorOptions ?? {
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mode: "markdown"
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}
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@ -16,6 +16,7 @@ export type PageOptions = {
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fallback?: boolean;
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fetchPageContent?: boolean;
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waitFor?: number;
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screenshot?: boolean;
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};
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export type ExtractorOptions = {
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@ -45,12 +45,14 @@ export async function generateRequestParams(
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export async function scrapWithFireEngine(
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url: string,
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waitFor: number = 0,
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screenshot: boolean = false,
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options?: any
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): Promise<string> {
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): Promise<[string, string]> {
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try {
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const reqParams = await generateRequestParams(url);
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// If the user has passed a wait parameter in the request, use that
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const waitParam = reqParams["params"]?.wait ?? waitFor;
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const screenshotParam = reqParams["params"]?.screenshot ?? screenshot;
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console.log(`[Fire-Engine] Scraping ${url} with wait: ${waitParam}`);
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const response = await fetch(process.env.FIRE_ENGINE_BETA_URL+ "/scrape", {
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@ -58,27 +60,28 @@ export async function scrapWithFireEngine(
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({ url: url, wait: waitParam }),
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body: JSON.stringify({ url: url, wait: waitParam, screenshot: screenshotParam }),
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});
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if (!response.ok) {
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console.error(
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`[Fire-Engine] Error fetching url: ${url} with status: ${response.status}`
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);
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return "";
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return ["", ""];
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}
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const contentType = response.headers['content-type'];
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if (contentType && contentType.includes('application/pdf')) {
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return fetchAndProcessPdf(url);
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return [await fetchAndProcessPdf(url), ""];
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} else {
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const data = await response.json();
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const html = data.content;
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return html ?? "";
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const screenshot = data.screenshot;
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return [html ?? "", screenshot ?? ""];
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}
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} catch (error) {
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console.error(`[Fire-Engine][c] Error fetching url: ${url} -> ${error}`);
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return "";
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return ["", ""];
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}
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}
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@ -182,7 +185,7 @@ export async function scrapWithFetch(url: string): Promise<string> {
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* @param defaultScraper The default scraper to use if the URL does not have a specific scraper order defined
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* @returns The order of scrapers to be used for scraping a URL
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*/
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function getScrapingFallbackOrder(defaultScraper?: string, isWaitPresent: boolean = false) {
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function getScrapingFallbackOrder(defaultScraper?: string, isWaitPresent: boolean = false, isScreenshotPresent: boolean = false) {
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const availableScrapers = baseScrapers.filter(scraper => {
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switch (scraper) {
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case "scrapingBee":
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@ -199,7 +202,7 @@ function getScrapingFallbackOrder(defaultScraper?: string, isWaitPresent: boolea
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let defaultOrder = ["scrapingBee", "fire-engine", "playwright", "scrapingBeeLoad", "fetch"];
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if (isWaitPresent) {
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if (isWaitPresent || isScreenshotPresent) {
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defaultOrder = ["fire-engine", "playwright", ...defaultOrder.filter(scraper => scraper !== "fire-engine" && scraper !== "playwright")];
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}
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@ -210,7 +213,7 @@ function getScrapingFallbackOrder(defaultScraper?: string, isWaitPresent: boolea
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return scrapersInOrder as typeof baseScrapers[number][];
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}
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async function handleCustomScraping(text: string, url: string): Promise<string | null> {
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async function handleCustomScraping(text: string, url: string): Promise<[string, string] | null> {
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if (text.includes('<meta name="readme-deploy"')) {
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console.log(`Special use case detected for ${url}, using Fire Engine with wait time 1000ms`);
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return await scrapWithFireEngine(url, 1000);
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@ -220,7 +223,7 @@ async function handleCustomScraping(text: string, url: string): Promise<string |
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export async function scrapSingleUrl(
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urlToScrap: string,
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pageOptions: PageOptions = { onlyMainContent: true, includeHtml: false, waitFor: 0},
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pageOptions: PageOptions = { onlyMainContent: true, includeHtml: false, waitFor: 0, screenshot: false },
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existingHtml: string = ""
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): Promise<Document> {
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urlToScrap = urlToScrap.trim();
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@ -242,12 +245,13 @@ export async function scrapSingleUrl(
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method: typeof baseScrapers[number]
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) => {
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let text = "";
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let screenshot = "";
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switch (method) {
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case "fire-engine":
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if (process.env.FIRE_ENGINE_BETA_URL) {
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console.log(`Scraping ${url} with Fire Engine`);
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text = await scrapWithFireEngine(url, pageOptions.waitFor);
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[text, screenshot] = await scrapWithFireEngine(url, pageOptions.waitFor, pageOptions.screenshot);
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}
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break;
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case "scrapingBee":
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@ -277,16 +281,17 @@ export async function scrapSingleUrl(
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// Check for custom scraping conditions
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const customScrapedContent = await handleCustomScraping(text, url);
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if (customScrapedContent) {
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text = customScrapedContent;
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text = customScrapedContent[0];
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screenshot = customScrapedContent[1];
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}
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//* TODO: add an optional to return markdown or structured/extracted content
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let cleanedHtml = removeUnwantedElements(text, pageOptions);
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return [await parseMarkdown(cleanedHtml), text];
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return [await parseMarkdown(cleanedHtml), text, screenshot];
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};
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try {
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let [text, html] = ["", ""];
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let [text, html, screenshot] = ["", "", ""];
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let urlKey = urlToScrap;
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try {
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urlKey = new URL(urlToScrap).hostname.replace(/^www\./, "");
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@ -294,7 +299,7 @@ export async function scrapSingleUrl(
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console.error(`Invalid URL key, trying: ${urlToScrap}`);
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}
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const defaultScraper = urlSpecificParams[urlKey]?.defaultScraper ?? "";
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const scrapersInOrder = getScrapingFallbackOrder(defaultScraper, pageOptions && pageOptions.waitFor && pageOptions.waitFor > 0)
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const scrapersInOrder = getScrapingFallbackOrder(defaultScraper, pageOptions && pageOptions.waitFor && pageOptions.waitFor > 0, pageOptions && pageOptions.screenshot && pageOptions.screenshot === true)
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for (const scraper of scrapersInOrder) {
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// If exists text coming from crawler, use it
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@ -304,7 +309,7 @@ export async function scrapSingleUrl(
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html = existingHtml;
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break;
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}
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[text, html] = await attemptScraping(urlToScrap, scraper);
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[text, html, screenshot] = await attemptScraping(urlToScrap, scraper);
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if (text && text.trim().length >= 100) break;
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const nextScraperIndex = scrapersInOrder.indexOf(scraper) + 1;
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if (nextScraperIndex < scrapersInOrder.length) {
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@ -318,12 +323,23 @@ export async function scrapSingleUrl(
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const soup = cheerio.load(html);
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const metadata = extractMetadata(soup, urlToScrap);
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const document: Document = {
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content: text,
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markdown: text,
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html: pageOptions.includeHtml ? html : undefined,
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metadata: { ...metadata, sourceURL: urlToScrap },
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};
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let document: Document;
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if(screenshot && screenshot.length > 0) {
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document = {
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content: text,
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markdown: text,
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html: pageOptions.includeHtml ? html : undefined,
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metadata: { ...metadata, screenshot_base64: screenshot, sourceURL: urlToScrap, },
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}
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}else{
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document = {
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content: text,
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markdown: text,
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html: pageOptions.includeHtml ? html : undefined,
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metadata: { ...metadata, sourceURL: urlToScrap, },
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}
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}
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return document;
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} catch (error) {
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