check if a listing is still active

lib/provider/immoscout.js

@@ -35,8 +35,11 @@
  *
  */
 
-import utils, { buildHash } from '../utils.js';
-import { convertWebToMobile } from '../services/immoscout/immoscout-web-translator.js';
+import { buildHash, isOneOf } from '../utils.js';
+import {
+  convertImmoscoutListingToMobileListing,
+  convertWebToMobile,
+} from '../services/immoscout/immoscout-web-translator.js';
 import logger from '../services/logger.js';
 let appliedBlackList = [];
 
@@ -77,6 +80,25 @@ async function getListings(url) {
     });
 }
 
+async function isListingActive(link) {
+  const result = await fetch(convertImmoscoutListingToMobileListing(link), {
+    headers: {
+      'User-Agent': 'ImmoScout_27.3_26.0_._',
+    },
+  });
+
+  if (result.status === 200) {
+    return 1;
+  }
+
+  if (result.status === 404) {
+    return 0;
+  }
+
+  logger.warn('Unknown status for immoscout listing', link);
+  return -1;
+}
+
 function nullOrEmpty(val) {
   return val == null || val.length === 0;
 }
@@ -87,7 +109,7 @@ function normalize(o) {
   return Object.assign(o, { id, title, address });
 }
 function applyBlacklist(o) {
-  return !utils.isOneOf(o.title, appliedBlackList);
+  return !isOneOf(o.title, appliedBlackList);
 }
 const config = {
   url: null,
@@ -104,6 +126,7 @@ const config = {
   normalize: normalize,
   filter: applyBlacklist,
   getListings: getListings,
+  activeTester: isListingActive,
 };
 export const init = (sourceConfig, blacklist) => {
   config.enabled = sourceConfig.enabled;