Separating all remaining code into files.

src/Preferences.js

@@ -0,0 +1,48 @@
+import Log from "./Log.js";
+
+export default class Preferences {
+
+    static NAME = 'midefos-idealista';
+
+    static _current;
+
+    static init() {
+        this._current = this._getConfig();
+    }
+
+    static get(key) {
+        const config = this._getConfig();
+        return config[key];
+    }
+
+    static save(config) {
+        window.localStorage.setItem(this.NAME, JSON.stringify(config));
+        this._current = config;
+        Log.debug('Saved preferences')
+    }
+
+    static _getConfig() {
+        const storageConfig = this._getFromLocalStorage();
+        if (!storageConfig) return this._default();
+        return storageConfig;
+    }
+
+    static _getFromLocalStorage() {
+        const storageConfig = window.localStorage.getItem(this.NAME);
+        if (!storageConfig) return null;
+        return JSON.parse(storageConfig);
+    }
+
+    static _default() {
+        return {
+            enabled: true,
+            percentages: true,
+            garage: false,
+            exterior: true,
+            lift: true,
+            'max-price': 120_000,
+            'max-price-per-meter': 1_500
+        }
+    }
+
+}