Create user preferences handling class

src/main/lib/Store.ts

@@ -0,0 +1,47 @@
+// Source - https://stackoverflow.com/a/55203597
+// Posted by Herman Andres Figueroa, modified by community. See post 'Timeline' for change history
+// Retrieved 2026-01-26, License - CC BY-SA 4.0
+import { app } from 'electron'
+import path from 'path';
+import fs from 'fs';
+
+export default class Store {
+    constructor(opts) {
+        // Renderer process has to get `app` module via `remote`, whereas the main process can get it directly
+        // app.getPath('userData') will return a string of the user's app data directory path.
+        const userDataPath = app.getPath('userData');
+        // We'll use the `configName` property to set the file name and path.join to bring it all together as a string
+        this.path = path.join(userDataPath, opts.configName + '.json');
+
+        this.data = parseDataFile(this.path, opts.defaults);
+    }
+    
+    path; data;
+
+    // This will just return the property on the `data` object
+    get(key) {
+        return this.data[key];
+    }
+
+    // ...and this will set it
+    set(key, val) {
+        this.data[key] = val;
+        // Wait, I thought using the node.js' synchronous APIs was bad form?
+        // We're not writing a server so there's not nearly the same IO demand on the process
+        // Also if we used an async API and our app was quit before the asynchronous write had a chance to complete,
+        // we might lose that data. Note that in a real app, we would try/catch this.
+        fs.writeFileSync(this.path, JSON.stringify(this.data));
+    }
+}
+
+function parseDataFile(filePath, defaults) {
+    // We'll try/catch it in case the file doesn't exist yet, which will be the case on the first application run.
+    // `fs.readFileSync` will return a JSON string which we then parse into a Javascript object
+    try {
+        // @ts-ignore
+        return JSON.parse(fs.readFileSync(filePath));
+    } catch(error) {
+        // if there was some kind of error, return the passed in defaults instead.
+        return defaults;
+    }
+}