use ocr to identifier page content

src/workers/OCRChecker.js

@@ -0,0 +1,46 @@
+const {v4: uuidv4} = require("uuid");
+const tesseract = require("node-tesseract-ocr");
+
+function delay(delayInMs) {
+    return new Promise(resolve => {
+        setTimeout(() => {
+            resolve(2);
+        }, delayInMs);
+    });
+}
+
+const config = {
+    lang: "eng",
+    oem: 1,
+    psm: 3,
+}
+
+
+class OCRChecker {
+
+    constructor(device, contact) {
+        this.device = device;
+        this.contact = contact;
+    }
+
+    get_file_name() {
+        let uuid = uuidv4();
+        return this.contact.passportNumber + "_" + uuid + ".png"
+    }
+
+    async get_result() {
+        let fileName = await this.take_screen_shot()
+        let result = await tesseract
+            .recognize(fileName, config)
+        console.log(result)
+    }
+
+    async take_screen_shot() {
+        let name = this.get_file_name()
+        await this.device.screenshot({path: name});
+        await delay(1000);
+        return name
+        // console.log(`stdout: ${stdout1}`);
+    }
+}
+module.exports = OCRChecker