Rename endpoints to be the same as job IDs

api/linked-pages.js

@@ -0,0 +1,48 @@
+const axios = require('axios');
+const cheerio = require('cheerio');
+const urlLib = require('url');
+const commonMiddleware = require('./_common/middleware');
+
+const handler = async (url) => {
+  const response = await axios.get(url);
+  const html = response.data;
+  const $ = cheerio.load(html);
+  const internalLinksMap = new Map();
+  const externalLinksMap = new Map();
+
+  // Get all links on the page
+  $('a[href]').each((i, link) => {
+    const href = $(link).attr('href');
+    const absoluteUrl = urlLib.resolve(url, href);
+    
+    // Check if absolute / relative, append to appropriate map or increment occurrence count
+    if (absoluteUrl.startsWith(url)) {
+      const count = internalLinksMap.get(absoluteUrl) || 0;
+      internalLinksMap.set(absoluteUrl, count + 1);
+    } else if (href.startsWith('http://') || href.startsWith('https://')) {
+      const count = externalLinksMap.get(absoluteUrl) || 0;
+      externalLinksMap.set(absoluteUrl, count + 1);
+    }
+  });
+
+  // Sort by most occurrences, remove supplicates, and convert to array
+  const internalLinks = [...internalLinksMap.entries()].sort((a, b) => b[1] - a[1]).map(entry => entry[0]);
+  const externalLinks = [...externalLinksMap.entries()].sort((a, b) => b[1] - a[1]).map(entry => entry[0]);
+
+  // If there were no links, then mark as skipped and show reasons
+  if (internalLinks.length === 0 && externalLinks.length === 0) {
+    return {
+      statusCode: 400,
+      body: JSON.stringify({
+        skipped: 'No internal or external links found. '
+          + 'This may be due to the website being dynamically rendered, using a client-side framework (like React), and without SSR enabled. '
+          + 'That would mean that the static HTML returned from the HTTP request doesn\'t contain any meaningful content for Web-Check to analyze. '
+          + 'You can rectify this by using a headless browser to render the page instead.',
+        }),
+    };
+  }
+
+  return { internal: internalLinks, external: externalLinks };
+};
+
+exports.handler = commonMiddleware(handler);