Provider for immobilien.de (#65)

* Add provider for immobilien.de

lib/provider/immobilienDe.js

@@ -0,0 +1,59 @@
+const utils = require('../utils');
+
+let appliedBlackList = [];
+
+function shortenLink(link) {
+  return link.substring(0, link.indexOf('?'));
+}
+
+function parseId(shortenedLink) {
+  return shortenedLink.substring(shortenedLink.lastIndexOf('/') + 1);
+}
+
+function normalize(o) {
+  const id = parseId(shortenLink(o.link));
+  const size = o.size || 'N/A m²';
+  const price = o.price || 'N/A €';
+  const title = o.title || 'No title available';
+  const address = o.address || 'No address available';
+  const link = shortenLink(o.link);
+  return Object.assign(o, { id, price, size, title, address, link });
+}
+
+function applyBlacklist(o) {
+  const titleNotBlacklisted = !utils.isOneOf(o.title, appliedBlackList);
+  const descNotBlacklisted = !utils.isOneOf(o.description, appliedBlackList);
+
+  return titleNotBlacklisted && descNotBlacklisted;
+}
+
+const config = {
+  url: null,
+  crawlContainer: '.estates_list .list_immo a._ref',
+  sortByDateParam: 'sort_col=*created_ts&sort_dir=desc',
+  crawlFields: {
+    price: '.list_entry .immo_preis .label_info',
+    size: '.list_entry .flaeche .label_info | removeNewline | trim',
+    title: '.list_entry .part_text h3 span',
+    description: '.list_entry .description | trim',
+    link: '@href',
+    address: '.list_entry .place',
+  },
+  paginate: '.list_immo .blocknav .blocknav_list li.next a@href',
+  normalize: normalize,
+  filter: applyBlacklist,
+};
+
+exports.init = (sourceConfig, blacklist) => {
+  config.enabled = sourceConfig.enabled;
+  config.url = sourceConfig.url;
+  appliedBlackList = blacklist || [];
+};
+
+exports.metaInformation = {
+  name: 'Immobilien.de',
+  baseUrl: 'https://www.immobilien.de/',
+  id: __filename.slice(__dirname.length + 1, -3),
+};
+
+exports.config = config;