add: Get QR Code

package.json

@@ -41,6 +41,7 @@
 		"link-preview-js": "^3.0.5",
 		"pino": "^9.2.0",
 		"prisma": "^5.16.1",
+		"qrcode": "^1.5.3",
 		"qrcode-terminal": "^0.12.0",
 		"typescript": "^5.5.3",
 		"uuid": "^10.0.0",

src/controllers/qrController.ts

@@ -1,13 +1,17 @@
+import QRCode from "qrcode";
+import { QRService } from "../services/qrService";
 import { isWAConnected } from "../modules/whatsapp";
 import type { NextFunction, Request, Response } from "express";
 
 export class QRController {
 	static async getQR(req: Request, res: Response, next: NextFunction) {
 		try {
 			if (!isWAConnected()) {
-				res.status(200).json({
-					qr_code: "result",
-					image_url: "result",
+				await QRService.getQR().then((qr: string) => {
+					res.status(200).json({
+						qr_code: qr,
+						image_url: `${req.protocol}://${req.get("host")}${req.originalUrl}/show?qrcode=${qr}`,
+					});
 				});
 			} else {
 				res.status(200).json({
@@ -18,4 +22,16 @@ export class QRController {
 			next(e);
 		}
 	}
+
+	static async showQR(req: Request, res: Response, next: NextFunction) {
+		try {
+			const qrcode = req.query.qrcode || "";
+			const qrCodeImage = await QRCode.toDataURL(qrcode);
+			res.send(`
+				<img src="${qrCodeImage}" alt="QR Code" style="display:block;margin-left:auto;margin-right:auto;border-style:solid;border-color:blue;"/>
+				`);
+		} catch (e) {
+			next(e);
+		}
+	}
 }

src/database/migrations/20240630152217_init/migration.sql → src/database/migrations/20240711135107_init/migration.sql

@@ -13,6 +13,16 @@ CREATE TABLE `users` (
     PRIMARY KEY (`id`)
 ) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
 
+-- CreateTable
+CREATE TABLE `qr_code` (
+    `id` INTEGER NOT NULL AUTO_INCREMENT,
+    `qr` VARCHAR(500) NOT NULL,
+    `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    `last_update` DATETIME(3) NULL,
+
+    PRIMARY KEY (`id`)
+) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
 -- CreateTable
 CREATE TABLE `messages` (
     `id` VARCHAR(191) NOT NULL,

src/database/schema.prisma

@@ -21,6 +21,15 @@ model User {
   @@map("users")
 }
 
+model qrCode {
+  id          Int       @id @default(autoincrement())
+  qr          String    @db.VarChar(500)
+  created_at  DateTime  @default(now())
+  last_update DateTime? @updatedAt
+
+  @@map("qr_code")
+}
+
 model Message {
   id         String        @unique
   text       String

src/main/routes/publicRoute.ts

@@ -11,6 +11,7 @@ publicRouter.get("/", getVersion);
 publicRouter.post("/users", UserController.register);
 
 publicRouter.get("/qr", QRController.getQR);
+publicRouter.get("/qr/show", QRController.showQR);
 
 // Messages
 publicRouter.post("/messages", MessageController.sendMessage);

src/main/server/app.ts

@@ -26,8 +26,6 @@ app.use("/", publicRouter);
 app.use(ErrorMiddleware);
 app.disable("x-powered-by");
 
-// app.use(express.static(path.join(__dirname, "..", "..", "public")));
-app.set("view engine", "ejs");
-// app.set("views", path.join(__dirname, "..", "..", "public"));
+// app.use(express.static(path.join(__dirname, "../../../public")));
 
 export { app as web };