fix(sparkasse): read the plot area on plot cards

lib/provider/sparkasse.js

@@ -203,6 +203,19 @@ function readAttributes(estate) {
   return Object.fromEntries(entries);
 }
 
+/**
+ * The card's size: the living area, or for a plot card the plot area. A house card carries both and the two texts
+ * arrive joined ("120 m² Wohnfläche774 m² Grundstücksfläche").
+ *
+ * @param {string|null|undefined} text
+ * @returns {number|null}
+ */
+function readSize(text) {
+  if (text == null) return null;
+  const living = /([\d.,]+)\s*m²\s*Wohnfläche/.exec(text)?.[1];
+  return extractNumber(living ?? text);
+}
+
 /**
  * @param {any} o
  * @returns {ParsedListing}
@@ -217,7 +230,7 @@ function normalize(o, runUrl) {
     link,
     title: o.title || '',
     price: extractNumber(o.price),
-    size: extractNumber(o.size),
+    size: readSize(o.size),
     rooms: extractNumber(o.rooms),
     address: o.address,
     image: o.image,
@@ -248,7 +261,9 @@ const config = {
     title: '[data-testid="estate-teaser-title"] | trim',
     price: '[data-testid="estate-teaser-price"] | trim',
     // main facts: "115 m² Wohnfläche", "774 m² Grundstücksfläche", "4 Zimmer"; each one is optional, so match on the label
-    size: '[data-testid="estate-teaser-mainfacts"] span:contains("Wohnfläche") | trim',
+    // a plot card carries "Grundstücksfläche" instead of a living area; a house card may carry both, and the cheerio
+    // text of both runs together, so `readSize` picks the living area when there is one
+    size: '[data-testid="estate-teaser-mainfacts"] span:contains("Wohnfläche"), [data-testid="estate-teaser-mainfacts"] span:contains("Grundstücksfläche") | trim',
     rooms: '[data-testid="estate-teaser-mainfacts"] span:contains("Zimmer") | trim',
     address: '[data-testid="estate-teaser-subtitle"] | trim',
     image: 'img@src',

test/provider/sparkasse.test.js

@@ -116,6 +116,25 @@ describe('#sparkasse testsuite()', () => {
     }
   });
 
+  it('reads the living area of a house card and the plot area of a plot card', () => {
+    const card = (facts) =>
+      `<div data-testid="estate-teaser"><a href="/expose/1.html"><span data-testid="estate-teaser-title">T</span><div data-testid="estate-teaser-mainfacts">${facts.map((fact) => `<span>${fact}</span>`).join('')}</div></a></div>`;
+    const sizeOf = (facts) => {
+      const [parsed] = parse(
+        provider.config.crawlContainer,
+        provider.config.crawlFields,
+        card(facts),
+        'https://immobilien.sparkasse.de/x',
+      );
+      return provider.createConfig({ url: 'https://immobilien.sparkasse.de/x' }).normalize(parsed).size;
+    };
+
+    expect(sizeOf(['120 m² Wohnfläche', '774 m² Grundstücksfläche', '4 Zimmer'])).toBe(120);
+    expect(sizeOf(['450 m² Grundstücksfläche'])).toBe(450);
+    expect(sizeOf(['75 m² Wohnfläche', '3 Zimmer'])).toBe(75);
+    expect(sizeOf(['1 Zimmer'])).toBeNull();
+  });
+
   describe('with provider_details enabled', () => {
     beforeEach(() => {
       vi.spyOn(mockStore, 'getUserSettings').mockReturnValue({ provider_details: [provider.metaInformation.id] });