feat(route): Add wohnnet.at real estate search engine (#18243)

* Add wohnnet.at real estate search engine

* fix string concatenation in single line

* add leading slash to path

---------

lib/routes/wohnnet/index.ts

@@ -0,0 +1,129 @@
+import { load } from 'cheerio';
+import ofetch from '@/utils/ofetch';
+import type { Data, DataItem, Route } from '@/types';
+
+const FEED_TITLE = 'wohnnet.at' as const;
+const FEED_LOGO = 'https://www.wohnnet.at/media/images/wohnnet/icon_192_192.png' as const;
+const FEED_LANGUAGE = 'de' as const;
+const ROUTE_PATH_PREFIX = '/wohnnet/' as const;
+const BASE_URL = 'https://www.wohnnet.at/immobilien/' as const;
+
+export const route: Route = {
+    name: 'Immobiliensuche',
+    path: '/:category/:region/*',
+    maintainers: ['sk22'],
+    categories: ['other'],
+    description: `
+Only returns the first page of search results, allowing you to keep track of
+newly added apartments. If you're looking for an apartment, make sure to also
+look through the other pages on the website.
+
+:::tip
+Note that the parameter \`&sortierung=neueste-zuerst\` for chronological order
+is automatically appended.
+:::
+
+:::tip
+To get your query URL, go to https://www.wohnnet.at/immobilien/suche, apply
+all desired filters (but at least a category and a region!) and click the
+"… Treffer anzeigen" link. From the resulting URL, cut off the
+\`https://www.wohnnet.at/immobilien/\` part at the beginning and replace only
+the \`?\` (the \`&\`s stay as is!) after the region name with a \`/\`.
+
+Examples:
+
+* \`${BASE_URL}mietwohnungen/wien\`
+    - → \`${ROUTE_PATH_PREFIX}mietwohnungen/wien\`
+* \`${BASE_URL}mietwohnungen/wien?unterregionen=g90101\`
+    - → \`${ROUTE_PATH_PREFIX}mietwohnungen/wien/unterregionen=g90101\`
+* \`${BASE_URL}mietwohnungen/wien?unterregionen=g90101&merkmale=balkon\`
+    - → \`${ROUTE_PATH_PREFIX}mietwohnungen/wien/unterregionen=g90101&merkmale=balkon\`
+:::
+`,
+    example: ROUTE_PATH_PREFIX + 'mietwohnungen/wien/unterregionen=g90101--g90201--g90301--g90401--g90501&flaeche=40&preis=-1000',
+    parameters: {
+        category: 'Category (`mietwohnungen`, `eigentumswohnungen`, `grundstuecke`, …)',
+        region: 'Region (`wien`, `oesterreich`, …)',
+        unterregionen: 'Unterregionen (e.g. `g90101--g90201--g90301`)',
+        intention: 'Intention (`kauf` | `miete`)',
+        zimmer: 'Zimmer (at least number, e.g. `2`)',
+        flaeche: 'Fläche (m², `40-` = at least 40 m², `40-60` = between 40 m² and 60 m²)',
+        preis: 'Preis (€, `-1000` = at most 1,000 €, `500-1000` = between 500 € and 1,000 €)',
+        merkmale: 'Merkmale (multiple, delimited by `--`, e.g. `balkon--garten--kurzzeitmiete--moebliert--parkplatz--provisionsfrei--sofort-beziehbar`)',
+    },
+    features: {
+        requireConfig: false,
+        requirePuppeteer: false,
+        antiCrawler: false,
+        supportBT: false,
+        supportPodcast: false,
+        supportScihub: false,
+    },
+    async handler(ctx) {
+        const category = ctx.req.param('category');
+        const region = ctx.req.param('region');
+
+        // /wohnnet/mietwohnungen/wien/&preis=… -> preis=…&sortierung=neueste-zuerst
+        let path =
+            ctx.req.path.slice(`${ROUTE_PATH_PREFIX}${category}/${region}/`.length) +
+            // provide chronological fallback sort (wohnnet.at will use the first one)
+            '&sortierung=neueste-zuerst';
+        if (path.startsWith('&')) {
+            path = path.slice(1);
+        }
+
+        const link = `${BASE_URL}${category}/${region}/?${path}`;
+        const response = await ofetch(link);
+        const $ = load(response);
+
+        const items = $('a:has(> .realty)')
+            .toArray()
+            .map((el) => {
+                const $el = $(el);
+                const href = $el.attr('href');
+                const [title, address] = $el
+                    .find('.realty-detail-title-address')
+                    .text()
+                    .split('\n')
+                    .map((p) => p.trim())
+                    .filter((p) => p.length);
+                const price = $el.find('.realty-detail-area-rooms .text-right').text().trim();
+                const details = $el
+                    .find('.realty-detail-area-rooms')
+                    .text()
+                    .split('\n')
+                    .map((p) => p.trim())
+                    .filter((p) => p.length);
+                const badges = $el
+                    .find('.realty-detail-badges .badge')
+                    .toArray()
+                    .map((b) => $(b).text().trim());
+                const agency = $el.find('.realty-detail-agency').text();
+                const imgSrc = $el.find('.realty-image img').attr('src');
+
+                const itemTitle = `${address} · ${price} | ${title}`;
+                const itemLink = new URL(href ?? '', BASE_URL).href;
+                const itemDescription = `${details.join(' · ')} | ${badges.join(' · ')} | ${agency}`;
+                const itemCategories = badges.filter((b) => !b.endsWith(' Bilder'));
+                const itemImage = imgSrc ? new URL(imgSrc, BASE_URL).href : undefined;
+
+                return {
+                    title: itemTitle,
+                    link: itemLink,
+                    description: itemDescription,
+                    category: itemCategories,
+                    image: itemImage,
+                    // pubDate is not available on wohnnet.at
+                } satisfies DataItem;
+            });
+
+        return {
+            title: FEED_TITLE,
+            language: FEED_LANGUAGE,
+            logo: FEED_LOGO,
+            allowEmpty: true,
+            item: items,
+            link,
+        } satisfies Data;
+    },
+};

lib/routes/wohnnet/namespace.ts

@@ -0,0 +1,8 @@
+import type { Namespace } from '@/types';
+
+export const namespace: Namespace = {
+    name: 'wohnnet.at',
+    url: 'wohnnet.at',
+    description: 'Austrian search engine for real estate',
+    lang: 'de',
+};