fix(immoscout): support buy-side (-kaufen) apartment sub-type SEO URLs

lib/services/immoscout/immoscout-web-translator.js

@@ -124,25 +124,33 @@ const WEB_PATH_TO_APARTMENT_EQUIPMENT_MAP = {
   'wohnung-kaufen-mit-balkon': { equipment: ['balcony'] },
   'wohnung-mit-garten-mieten': { equipment: ['garden'] },
   'eigentumswohnung-mit-garten': { equipment: ['garden'] },
+};
+
+const BASE_SLUGS = {
   // Category "Wohnungstyp"
-  'souterrainwohnung-mieten': { apartmenttypes: ['halfbasement'] },
-  'erdgeschosswohnung-mieten': { apartmenttypes: ['groundfloor'] },
-  'hochparterrewohnung-mieten': { apartmenttypes: ['raisedgroundfloor'] },
-  'etagenwohnung-mieten': { apartmenttypes: ['apartment'] },
-  'loft-mieten': { apartmenttypes: ['loft'] },
-  'maisonette-mieten': { apartmenttypes: ['maisonette'] },
-  'terrassenwohnung-mieten': { apartmenttypes: ['terracedflat'] },
-  'penthouse-mieten': { apartmenttypes: ['penthouse'] },
-  'dachgeschosswohnung-mieten': { apartmenttypes: ['roofstorey'] },
+  souterrainwohnung: { apartmenttypes: ['halfbasement'] },
+  erdgeschosswohnung: { apartmenttypes: ['groundfloor'] },
+  hochparterrewohnung: { apartmenttypes: ['raisedgroundfloor'] },
+  etagenwohnung: { apartmenttypes: ['apartment'] },
+  loft: { apartmenttypes: ['loft'] },
+  maisonette: { apartmenttypes: ['maisonette'] },
+  terrassenwohnung: { apartmenttypes: ['terracedflat'] },
+  penthouse: { apartmenttypes: ['penthouse'] },
+  dachgeschosswohnung: { apartmenttypes: ['roofstorey'] },
   // Category "Ausstattung"
-  'wohnung-mit-garage-mieten': { equipment: ['parking'] },
-  'wohnung-mit-einbaukueche-mieten': { equipment: ['builtinkitchen'] },
-  'wohnung-mit-keller-mieten': { equipment: ['cellar'] },
+  'wohnung-mit-garage': { equipment: ['parking'] },
+  'wohnung-mit-einbaukueche': { equipment: ['builtinkitchen'] },
+  'wohnung-mit-keller': { equipment: ['cellar'] },
   // Category "Merkmale"
-  'neubauwohnung-mieten': { newbuilding: true },
-  'barrierefreie-wohnung-mieten': { equipment: ['handicappedaccessible'] },
+  neubauwohnung: { newbuilding: true },
+  'barrierefreie-wohnung': { equipment: ['handicappedaccessible'] },
 };
 
+for (const [key, value] of Object.entries(BASE_SLUGS)) {
+  WEB_PATH_TO_APARTMENT_EQUIPMENT_MAP[`${key}-mieten`] = value;
+  WEB_PATH_TO_APARTMENT_EQUIPMENT_MAP[`${key}-kaufen`] = value;
+}
+
 // SEO-optimized rental paths used by the ImmoScout web UI when the user
 // configures a maximum warmrent. Example: "wohnung-bis-800-euro-warm" means
 // "apartment for rent up to 800 EUR warmrent". The web UI generates these
@@ -201,7 +209,9 @@ export function convertWebToMobile(webUrl) {
     // Test for seo optimized apartment path (only used on the ImmoScout web app)
     if (WEB_PATH_TO_APARTMENT_EQUIPMENT_MAP[realTypeKey]) {
       additionalParamsFromWebPath = WEB_PATH_TO_APARTMENT_EQUIPMENT_MAP[realTypeKey];
-      realType = REAL_ESTATE_TYPE['wohnung-mieten'];
+      realType = realTypeKey.endsWith('-kaufen')
+        ? REAL_ESTATE_TYPE['wohnung-kaufen']
+        : REAL_ESTATE_TYPE['wohnung-mieten'];
     } else {
       // Test for SEO max-warmrent path, e.g. "wohnung-bis-800-euro-warm"
       const seoMaxWarmrent = parseSeoMaxWarmrentPath(realTypeKey);

test/services/immoscout/immoscout-web-translator.test.js

@@ -140,6 +140,65 @@ describe('#immoscout-mobile URL conversion', () => {
     expect(queryParams.get('pricetype')).toBe('calculatedtotalrent');
   });
 
+  // Buy-side apartment sub-type SEO paths.
+  it.each([
+    ['souterrainwohnung-kaufen', 'halfbasement'],
+    ['erdgeschosswohnung-kaufen', 'groundfloor'],
+    ['hochparterrewohnung-kaufen', 'raisedgroundfloor'],
+    ['etagenwohnung-kaufen', 'apartment'],
+    ['loft-kaufen', 'loft'],
+    ['maisonette-kaufen', 'maisonette'],
+    ['terrassenwohnung-kaufen', 'terracedflat'],
+    ['penthouse-kaufen', 'penthouse'],
+    ['dachgeschosswohnung-kaufen', 'roofstorey'],
+  ])('should convert %s to apartmentbuy with apartmenttype %s', (slug, apartmentType) => {
+    const webUrl = `https://www.immobilienscout24.de/Suche/de/berlin/berlin/${slug}`;
+
+    const converted = convertWebToMobile(webUrl);
+    const queryParams = new URL(converted).searchParams;
+    expect(queryParams.get('realestatetype')).toBe('apartmentbuy');
+    expect(queryParams.get('apartmenttypes')).toBe(apartmentType);
+  });
+
+  // Buy-side equipment/feature SEO paths follow the same "-kaufen" suffix
+  // pattern as the apartment sub-types above (also verified live).
+  it.each([
+    ['wohnung-mit-garage-kaufen', 'parking'],
+    ['wohnung-mit-einbaukueche-kaufen', 'builtinkitchen'],
+    ['wohnung-mit-keller-kaufen', 'cellar'],
+    ['barrierefreie-wohnung-kaufen', 'handicappedaccessible'],
+  ])('should convert %s to apartmentbuy with equipment %s', (slug, equipment) => {
+    const webUrl = `https://www.immobilienscout24.de/Suche/de/berlin/berlin/${slug}`;
+
+    const converted = convertWebToMobile(webUrl);
+    const queryParams = new URL(converted).searchParams;
+    expect(queryParams.get('realestatetype')).toBe('apartmentbuy');
+    expect(queryParams.get('equipment')).toBe(equipment);
+  });
+
+  it('should convert neubauwohnung-kaufen to apartmentbuy with newbuilding=true', () => {
+    const webUrl = 'https://www.immobilienscout24.de/Suche/de/berlin/berlin/neubauwohnung-kaufen';
+
+    const converted = convertWebToMobile(webUrl);
+    const queryParams = new URL(converted).searchParams;
+    expect(queryParams.get('realestatetype')).toBe('apartmentbuy');
+    expect(queryParams.get('newbuilding')).toBe('true');
+  });
+
+  // Sanity check: the corresponding "-mieten" slugs must remain untouched
+  // by the suffix-based realType resolution introduced above.
+  it.each([
+    ['souterrainwohnung-mieten', 'halfbasement'],
+    ['dachgeschosswohnung-mieten', 'roofstorey'],
+  ])('should keep %s resolving to apartmentrent with apartmenttype %s', (slug, apartmentType) => {
+    const webUrl = `https://www.immobilienscout24.de/Suche/de/berlin/berlin/${slug}`;
+
+    const converted = convertWebToMobile(webUrl);
+    const queryParams = new URL(converted).searchParams;
+    expect(queryParams.get('realestatetype')).toBe('apartmentrent');
+    expect(queryParams.get('apartmenttypes')).toBe(apartmentType);
+  });
+
   // Test URL conversion with unsupported query parameters
   it('should remove unsupported query parameters', () => {
     const webUrl = 'https://www.immobilienscout24.de/Suche/de/berlin/berlin/wohnung-mieten?minimuminternetspeed=100000';