Separate data builder and QRcode generator

src/generator.ts

@@ -0,0 +1,34 @@
+import QRCode from "qrcode";
+
+import { DataUrl } from "../types/types";
+import { TranslatableError } from "./error";
+
+
+class QRCodeGenerator {
+
+    protected readonly inputString: string;
+
+    // TODO: make it configurable
+    protected readonly quality = {
+        margin: 1,
+        width: 500
+    }
+
+    public constructor(inputString: string) {
+        this.inputString = inputString;
+    }
+
+    public async generate(): Promise<DataUrl> {
+        try {
+            return QRCode.toDataURL(this.inputString, this.quality);
+        }
+        catch (e: unknown) {
+            throw new TranslatableError("generation.unknown_error")
+        }
+    }
+
+}
+
+export async function generateQR(inputString: string): Promise<DataUrl> {
+    return await (new QRCodeGenerator(inputString)).generate();
+}