diff --git a/.github/workflows/test.yml-template b/.github/workflows/test.yml-template
new file mode 100644
index 00000000..bb13dfc4
--- /dev/null
+++ b/.github/workflows/test.yml-template
@@ -0,0 +1,23 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test
diff --git a/package-lock.json b/package-lock.json
index 185b2268..de1b0c7a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,9 +9,12 @@
       "version": "1.0.0",
       "hasInstallScript": true,
       "license": "GPL-3.0",
+      "dependencies": {
+        "readline": "^1.3.0"
+      },
       "devDependencies": {
         "@mate-academy/eslint-config": "latest",
-        "@mate-academy/scripts": "^1.8.6",
+        "@mate-academy/scripts": "^1.9.12",
         "eslint": "^8.57.0",
         "eslint-plugin-jest": "^28.6.0",
         "eslint-plugin-node": "^11.1.0",
@@ -1467,10 +1470,11 @@
       }
     },
     "node_modules/@mate-academy/scripts": {
-      "version": "1.8.6",
-      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.8.6.tgz",
-      "integrity": "sha512-b4om/whj4G9emyi84ORE3FRZzCRwRIesr8tJHXa8EvJdOaAPDpzcJ8A0sFfMsWH9NUOVmOwkBtOXDu5eZZ00Ig==",
+      "version": "1.9.12",
+      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.9.12.tgz",
+      "integrity": "sha512-/OcmxMa34lYLFlGx7Ig926W1U1qjrnXbjFJ2TzUcDaLmED+A5se652NcWwGOidXRuMAOYLPU2jNYBEkKyXrFJA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "@octokit/rest": "^17.11.2",
         "@types/get-port": "^4.2.0",
@@ -7498,6 +7502,12 @@
       "integrity": "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg==",
       "dev": true
     },
+    "node_modules/readline": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/readline/-/readline-1.3.0.tgz",
+      "integrity": "sha512-k2d6ACCkiNYz222Fs/iNze30rRJ1iIicW7JuX/7/cozvih6YCkFZH+J6mAFDVgv0dRBaAyr4jDqC95R2y4IADg==",
+      "license": "BSD"
+    },
     "node_modules/regexp.prototype.flags": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.5.2.tgz",
diff --git a/package.json b/package.json
index 216da526..919085a9 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^1.9.12",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-node": "^11.1.0",
@@ -27,5 +27,8 @@
   },
   "mateAcademy": {
     "projectType": "javascript"
+  },
+  "dependencies": {
+    "readline": "^1.3.0"
   }
 }
diff --git a/src/app.js b/src/app.js
index e89a2d97..16f614f2 100644
--- a/src/app.js
+++ b/src/app.js
@@ -1,3 +1,37 @@
+/* eslint-disable no-console */
 'use strict';
 
-// Write your code here
+const readline = require('node:readline');
+const { getBullsAndCows } = require('./modules/getBullsAndCows');
+const { generateRandomNumber } = require('./modules/generateRandomNumber');
+const { checkIsValidUserInput } = require('./modules/checkIsValidUserInput');
+
+const terminal = readline.createInterface(process.stdin, process.stdout);
+const randomNumber = generateRandomNumber();
+
+const askQuestion = () => {
+  terminal.question(`Please, enter a number `, (num) => {
+    const userNumber = checkIsValidUserInput(num);
+
+    if (!userNumber) {
+      console.log('Invalid input. ');
+    } else {
+      const bullsAndCows = getBullsAndCows(Number(num), randomNumber);
+
+      if (bullsAndCows.bulls === 4) {
+        console.log('Cngrats you are winner');
+        terminal.close();
+
+        return;
+      }
+
+      console.log(
+        `Bulls: ${bullsAndCows.bulls}, Cows: ${bullsAndCows.cows}. Try again.`,
+      );
+    }
+
+    askQuestion();
+  });
+};
+
+askQuestion();
diff --git a/src/modules/checkIsValidUserInput.js b/src/modules/checkIsValidUserInput.js
index 40979664..5587d0fc 100644
--- a/src/modules/checkIsValidUserInput.js
+++ b/src/modules/checkIsValidUserInput.js
@@ -1,5 +1,7 @@
 'use strict';
 
+const { passRules } = require('../utils/passRules');
+
 /**
  * Checks that the user input is valid.
  * Valid user input is a 4-digit number that does not start with 0
@@ -9,7 +11,7 @@
  * @return {boolean} - True if the user input is valid, false otherwise
  */
 function checkIsValidUserInput(userInput) {
-  /* Write your code here */
+  return passRules(userInput);
 }
 
 module.exports = {
diff --git a/src/modules/generateRandomNumber.js b/src/modules/generateRandomNumber.js
index 14ad1e2b..666df1c4 100644
--- a/src/modules/generateRandomNumber.js
+++ b/src/modules/generateRandomNumber.js
@@ -1,5 +1,7 @@
 'use strict';
 
+const { passRules } = require('../utils/passRules');
+
 /**
  * Generate a random 4-digit number that does not start with 0
  * and does not contain any duplicate digits.
@@ -7,7 +9,13 @@
  * @return {number} A random 4-digit number
  */
 function generateRandomNumber() {
-  /* Write your code here */
+  const number = Math.floor(Math.random() * (9999 - 1000 + 1)) + 1000;
+
+  if (passRules(number)) {
+    return number;
+  }
+
+  return generateRandomNumber();
 }
 
 module.exports = {
diff --git a/src/modules/getBullsAndCows.js b/src/modules/getBullsAndCows.js
index 3f0b39a6..783bc677 100644
--- a/src/modules/getBullsAndCows.js
+++ b/src/modules/getBullsAndCows.js
@@ -13,7 +13,26 @@
  * Example: { bulls: 1, cows: 2 }
  */
 function getBullsAndCows(userInput, numberToGuess) {
-  /* Write your code here */
+  const result = { bulls: 0, cows: 0 };
+  const userInputStr = String(userInput);
+  const numberToGuessStr = String(numberToGuess);
+
+  if (userInputStr.length !== 4) {
+    return result;
+  }
+
+  for (let i = 0; i < 4; i++) {
+    if (userInputStr[i] === numberToGuessStr[i]) {
+      result.bulls++;
+      continue;
+    }
+
+    if (numberToGuessStr.includes(userInputStr[i])) {
+      result.cows++;
+    }
+  }
+
+  return result;
 }
 
 module.exports = {
diff --git a/src/utils/hasUniqDigits.js b/src/utils/hasUniqDigits.js
new file mode 100644
index 00000000..b8b0ad62
--- /dev/null
+++ b/src/utils/hasUniqDigits.js
@@ -0,0 +1,8 @@
+function hasUniqDigits(num) {
+  const numStr = String(num);
+  const uniqDigits = new Set(numStr);
+
+  return uniqDigits.size === numStr.length;
+}
+
+module.exports = { hasUniqDigits };
diff --git a/src/utils/passRules.js b/src/utils/passRules.js
new file mode 100644
index 00000000..50eab08c
--- /dev/null
+++ b/src/utils/passRules.js
@@ -0,0 +1,22 @@
+'use strict';
+
+const { hasUniqDigits } = require('./hasUniqDigits');
+
+function passRules(num) {
+  const userInputStr = String(num);
+
+  if (
+    userInputStr.length !== 4 ||
+    !hasUniqDigits(userInputStr) ||
+    userInputStr[0] === '0' ||
+    isNaN(userInputStr)
+  ) {
+    return false;
+  }
+
+  return true;
+}
+
+module.exports = {
+  passRules,
+};