From cfe95ab3d7b9a75e3cf8617cd3f9fad27f3058c0 Mon Sep 17 00:00:00 2001
From: oleh <opoiasnik@gmail.com>
Date: Thu, 3 Apr 2025 11:57:59 +0200
Subject: [PATCH] 2 zadanie
---
z2/.gitignore | 47 ++++
z2/README.md | 131 ++++++++++++
z2/backend/Dockerfile | 20 ++
z2/backend/index.js | 200 ++++++++++++++++++
z2/backend/package.json | 18 ++
z2/deployment.yaml | 59 ++++++
z2/docker-compose.yml | 51 +++++
z2/frontend/.gitignore | 24 +++
z2/frontend/Dockerfile | 28 +++
z2/frontend/README.md | 110 ++++++++++
z2/frontend/eslint.config.js | 33 +++
z2/frontend/index.html | 13 ++
z2/frontend/package.json | 27 +++
z2/frontend/public/vite.svg | 1 +
z2/frontend/src/App.css | 42 ++++
z2/frontend/src/App.jsx | 107 ++++++++++
z2/frontend/src/assets/react.svg | 1 +
z2/frontend/src/components/Board.css | 9 +
z2/frontend/src/components/Board.jsx | 46 ++++
z2/frontend/src/components/Cell.css | 24 +++
z2/frontend/src/components/Cell.jsx | 24 +++
z2/frontend/src/components/GameBoard.css | 66 ++++++
z2/frontend/src/components/GameBoard.jsx | 174 +++++++++++++++
z2/frontend/src/components/Header.css | 12 ++
z2/frontend/src/components/Header.jsx | 12 ++
z2/frontend/src/components/PlacementBoard.css | 73 +++++++
z2/frontend/src/components/PlacementBoard.jsx | 135 ++++++++++++
z2/frontend/src/components/PlayerForm.css | 123 +++++++++++
z2/frontend/src/components/PlayerForm.jsx | 104 +++++++++
z2/frontend/src/index.css | 0
z2/frontend/src/main.jsx | 10 +
z2/frontend/vite.config.js | 7 +
z2/namespace.yaml | 4 +
z2/prepare-app.sh | 8 +
z2/remove-app.sh | 14 ++
z2/service.yaml | 40 ++++
z2/start-app.sh | 14 ++
z2/statefulset.yaml | 58 +++++
z2/stop-app.sh | 13 ++
39 files changed, 1882 insertions(+)
create mode 100644 z2/.gitignore
create mode 100644 z2/README.md
create mode 100644 z2/backend/Dockerfile
create mode 100644 z2/backend/index.js
create mode 100644 z2/backend/package.json
create mode 100644 z2/deployment.yaml
create mode 100644 z2/docker-compose.yml
create mode 100644 z2/frontend/.gitignore
create mode 100644 z2/frontend/Dockerfile
create mode 100644 z2/frontend/README.md
create mode 100644 z2/frontend/eslint.config.js
create mode 100644 z2/frontend/index.html
create mode 100644 z2/frontend/package.json
create mode 100644 z2/frontend/public/vite.svg
create mode 100644 z2/frontend/src/App.css
create mode 100644 z2/frontend/src/App.jsx
create mode 100644 z2/frontend/src/assets/react.svg
create mode 100644 z2/frontend/src/components/Board.css
create mode 100644 z2/frontend/src/components/Board.jsx
create mode 100644 z2/frontend/src/components/Cell.css
create mode 100644 z2/frontend/src/components/Cell.jsx
create mode 100644 z2/frontend/src/components/GameBoard.css
create mode 100644 z2/frontend/src/components/GameBoard.jsx
create mode 100644 z2/frontend/src/components/Header.css
create mode 100644 z2/frontend/src/components/Header.jsx
create mode 100644 z2/frontend/src/components/PlacementBoard.css
create mode 100644 z2/frontend/src/components/PlacementBoard.jsx
create mode 100644 z2/frontend/src/components/PlayerForm.css
create mode 100644 z2/frontend/src/components/PlayerForm.jsx
create mode 100644 z2/frontend/src/index.css
create mode 100644 z2/frontend/src/main.jsx
create mode 100644 z2/frontend/vite.config.js
create mode 100644 z2/namespace.yaml
create mode 100644 z2/prepare-app.sh
create mode 100644 z2/remove-app.sh
create mode 100644 z2/service.yaml
create mode 100644 z2/start-app.sh
create mode 100644 z2/statefulset.yaml
create mode 100644 z2/stop-app.sh
diff --git a/z2/.gitignore b/z2/.gitignore
new file mode 100644
index 0000000..6c96855
--- /dev/null
+++ b/z2/.gitignore
@@ -0,0 +1,47 @@
+
+.DS_Store
+Thumbs.db
+
+
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+
+node_modules/
+package-lock.json
+.pnpm-debug.log
+.npmrc
+
+
+build/
+dist/
+
+
+*.env
+docker-compose.override.yml
+docker-compose*.log
+.dockerignore
+
+
+.vscode/
+.idea/
+*.sw?
+
+
+.DS_Store
+
+
+*~
+
+
+*.lnk
+
+
+tmp/
+temp/
+
+
+.cache/
+.history/
diff --git a/z2/README.md b/z2/README.md
new file mode 100644
index 0000000..0e19ecf
--- /dev/null
+++ b/z2/README.md
@@ -0,0 +1,131 @@
+# Battleship Web Application
+
+## 1. Podmienky na nasadenie a spustenie
+
+Na spustenie tejto aplikácie je potrebný nasledujúci softvér:
+- **Docker** (nainštalovaný a správne nakonfigurovaný)
+- **Docker Compose** (verzia 3.8 a vyššia)
+- **Bash** (pre spúšťanie skriptov)
+
+Odporúčané prostredie: Linux alebo Windows s nainštalovaným WSL2.
+
+## 2. Opis aplikácie
+
+Táto webová aplikácia predstavuje jednoduchú hru Battleship. Aplikácia je rozdelená na tri hlavné služby:
+- **Frontend:** Webové rozhranie, kde hráči zadávajú svoje mená, umiestňujú svoje lode a hrajú hru.
+- **Backend:** Serverová logika, ktorá spracováva požiadavky od frontendu, komunikuje s databázou a ukladá výsledky hier.
+- **Databáza (MySQL):** Ukladá trvalé dáta – informácie o hrách, výsledkoch a nastaveniach. Dáta sú uchovávané v persistent volume, aby prežili reštarty kontajnerov.
+
+## 3. Opis virtuálnych sietí a pomenovaných zväzkov
+
+### Virtuálna sieť
+- **app-net:**
+ Všetky kontajnery (frontend, backend, MySQL) bežia v rámci jednej Docker siete s názvom `app-net`.
+ - Ak sieť nie je vytvorená, skripty ju vytvoria.
+ - Sieť umožňuje vzájomnú komunikáciu kontajnerov pomocou mien služieb (napr. backend pristupuje k databáze pomocou mena `mysql`).
+
+### Pomenované zväzky
+- **db_data:**
+ Tento persistent volume je pripojený k službe MySQL a ukladá dáta (obsah databázy) na ceste `/var/lib/mysql`.
+ - Zabezpečuje, že aj pri reštarte alebo odstránení kontajnera sa dáta nevymažú, pokiaľ ich zámselne neodstránite.
+
+## 4. Opis konfigurácie kontajnerov
+
+### MySQL
+- **Image:** `mysql:8.0.30`
+- **Premenné prostredia:**
+ - `MYSQL_ROOT_PASSWORD=somepassword`
+ - `MYSQL_DATABASE=battleship`
+- **Port:** 3306 (mapovaný na localhost:3306)
+- **Persistent Volume:** `db_data` pripojený na `/var/lib/mysql`
+- **Sieť:** `app-net`
+- **Reštart:** `unless-stopped`
+
+### Backend
+- **Build:** Dockerfile v priečinku `./backend`
+- **Port:** 4000 (mapovaný na localhost:4000)
+- **Environment Variables:**
+ - `DB_HOST=mysql` (meno služby MySQL v rámci docker-compose)
+ - `DB_PORT=3306`
+ - `DB_USER=root`
+ - `DB_PASSWORD=somepassword`
+ - `DB_NAME=battleship`
+- **Závislosť:** Závisí od služby MySQL (nastavené v `depends_on`)
+- **Sieť:** `app-net`
+- **Reštart:** `unless-stopped`
+
+### Frontend
+- **Build:** Dockerfile v priečinku `./frontend`
+- **Port:** 80 (mapovaný na localhost:3001)
+- **Závislosť:** Závisí od backendu (nastavené v `depends_on`)
+- **Sieť:** `app-net`
+- **Reštart:** `unless-stopped`
+
+## 5. Zoznam použitých kontajnerov a ich stručný opis
+
+- **battleship_mysql:**
+ Beží MySQL databáza, ktorá ukladá trvalé dáta aplikácie. Používa persistent volume `db_data`.
+
+- **battleship_backend:**
+ Node.js aplikácia, ktorá poskytuje API pre hru, komunikuje s databázou a spracováva hernú logiku.
+
+- **battleship_frontend:**
+ Webové rozhranie aplikácie (React), prostredníctvom ktorého hráči interagujú s hrou.
+
+## 6. Návod ako pripraviť, spustiť, pozastaviť a vymazať aplikáciu
+
+Súčasťou projektu sú štyri skripty:
+
+### Príprava aplikácie
+**prepare-app.sh**
+Tento skript:
+- Vytvorí externú sieť `app-net` (ak ešte neexistuje).
+- Zostaví Docker obrazy pre MySQL, backend a frontend prostredníctvom docker-compose.
+
+Spustenie:
+```bash
+./prepare-app.sh
+```
+
+### Spustenie aplikácie
+**start-app.sh**
+Tento skript:
+- Spustí všetky kontajnery (MySQL, backend, frontend) pomocou `docker-compose up -d`.
+- Vypíše informácie o dostupnosti aplikácie.
+
+Spustenie:
+```bash
+./start-app.sh
+```
+
+### Pozastavenie aplikácie
+**stop-app.sh**
+Tento skript:
+- Pozastaví všetky služby, pričom dáta v databáze ostanú zachované (persistent volume).
+
+Spustenie:
+```bash
+./stop-app.sh
+```
+
+### Odstránenie aplikácie
+**remove-app.sh**
+Tento skript:
+- Odstráni všetky vytvorené kontajnery, obrazy a persistent volume (ak sa použije parameter `-v`).
+
+Spustenie:
+```bash
+./remove-app.sh
+```
+
+## 7. Návod ako si pozrieť aplikáciu na webovom prehliadači
+
+### Frontend:
+Otvorte webový prehliadač a zadajte: [http://localhost:3001](http://localhost:3001)
+
+### Backend API:
+API je dostupné na: [http://localhost:4000](http://localhost:4000)
+
+### MySQL:
+Pripojte sa k databáze na `localhost:3306` pomocou MySQL klienta.
+
diff --git a/z2/backend/Dockerfile b/z2/backend/Dockerfile
new file mode 100644
index 0000000..7d22d72
--- /dev/null
+++ b/z2/backend/Dockerfile
@@ -0,0 +1,20 @@
+
+FROM node:14-alpine
+
+
+WORKDIR /app
+
+
+COPY package*.json ./
+
+
+RUN npm install
+
+
+COPY . .
+
+
+EXPOSE 4000
+
+
+CMD ["npm", "start"]
diff --git a/z2/backend/index.js b/z2/backend/index.js
new file mode 100644
index 0000000..6874362
--- /dev/null
+++ b/z2/backend/index.js
@@ -0,0 +1,200 @@
+const express = require('express');
+const cors = require('cors');
+const mysql = require('mysql2/promise');
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+
+(async () => {
+ console.log("Initializing database connection...");
+
+ try {
+ const pool = await mysql.createPool({
+ host: process.env.DB_HOST || 'localhost',
+ user: process.env.DB_USER || 'root',
+ password: process.env.DB_PASSWORD || 'somepassword',
+ database: process.env.DB_NAME || 'battleship',
+ waitForConnections: true,
+ connectionLimit: 10,
+ queueLimit: 0
+ });
+
+
+ console.log("Successfully connected to MySQL!");
+
+
+ const conn = await pool.getConnection();
+ const [rows] = await conn.query("SELECT VERSION() AS mysql_version");
+ console.log(`MySQL Version: ${rows[0].mysql_version}`);
+ conn.release();
+
+
+ console.log("Checking or creating tables...");
+ await pool.execute(`
+ CREATE TABLE IF NOT EXISTS games (
+ id INT AUTO_INCREMENT PRIMARY KEY,
+ player1 VARCHAR(255),
+ player2 VARCHAR(255),
+ player1_ships JSON,
+ player2_ships JSON,
+ current_turn INT DEFAULT 1,
+ game_state JSON NOT NULL
+ )
+ `);
+ console.log("Table 'games' is ready!");
+
+ await pool.execute(`
+ CREATE TABLE IF NOT EXISTS game_results (
+ id INT AUTO_INCREMENT PRIMARY KEY,
+ game_id INT,
+ winner VARCHAR(255),
+ loser VARCHAR(255),
+ moves INT
+ )
+ `);
+ console.log("Table 'game_results' is ready!");
+
+app.get('/api/results', async (req, res) => {
+ try {
+ const [results] = await pool.execute('SELECT * FROM game_results ORDER BY id DESC');
+ res.json({ results });
+ } catch (err) {
+ console.error("Error fetching results:", err);
+ res.status(500).json({ error: "Database error" });
+ }
+});
+
+
+ app.post('/api/new-game', async (req, res) => {
+ const { player1, player2 } = req.body;
+ if (!player1 || !player2) {
+ console.warn("Missing player names in request.");
+ return res.status(400).json({ error: 'Player names required' });
+ }
+
+ const gameState = {
+ boardSize: 5,
+ hits: [],
+ misses: [],
+ gameOver: false
+ };
+
+ try {
+ console.log(`Creating new game for ${player1} vs ${player2}...`);
+ const [result] = await pool.execute(
+ 'INSERT INTO games (player1, player2, game_state) VALUES (?, ?, ?)',
+ [player1, player2, JSON.stringify(gameState)]
+ );
+ console.log(`Game created with ID: ${result.insertId}`);
+ res.json({ gameId: result.insertId, message: 'Game created' });
+ } catch (err) {
+ console.error('Error creating game:', err);
+ res.status(500).json({ error: 'Database error' });
+ }
+ });
+
+
+ app.post('/api/place-ships', async (req, res) => {
+ const { gameId, player, ships } = req.body;
+ if (!gameId || !player || !ships) {
+ console.warn("Missing parameters for placing ships.");
+ return res.status(400).json({ error: 'Missing parameters' });
+ }
+
+ try {
+ console.log(`Placing ships for player ${player} in game ID: ${gameId}...`);
+ const [rows] = await pool.execute('SELECT * FROM games WHERE id = ?', [gameId]);
+ if (rows.length === 0) {
+ console.warn(`Game with ID ${gameId} not found.`);
+ return res.status(404).json({ error: 'Game not found' });
+ }
+
+ let updateField = player === 1 ? 'player1_ships' : 'player2_ships';
+ await pool.execute(`UPDATE games SET ${updateField} = ? WHERE id = ?`, [JSON.stringify(ships), gameId]);
+ console.log(`Ships placed for player ${player} in game ID: ${gameId}`);
+
+ res.json({ message: `Ships placed for player ${player}` });
+ } catch (err) {
+ console.error('Error placing ships:', err);
+ res.status(500).json({ error: 'Database error' });
+ }
+ });
+
+ // 🎯 Атака
+ app.post('/api/attack', async (req, res) => {
+ const { gameId, row, col, player } = req.body;
+ if (!gameId || typeof row === 'undefined' || typeof col === 'undefined' || !player) {
+ console.warn("Missing attack parameters in request.");
+ return res.status(400).json({ error: 'Missing parameters' });
+ }
+
+ try {
+ console.log(`Player ${player} attacks (${row}, ${col}) in game ID: ${gameId}`);
+ const [rows] = await pool.execute('SELECT * FROM games WHERE id = ?', [gameId]);
+ if (rows.length === 0) {
+ console.warn(`Game with ID ${gameId} not found.`);
+ return res.status(404).json({ error: 'Game not found' });
+ }
+
+ let game = rows[0];
+ let state = JSON.parse(game.game_state);
+ let opponentShips = player === 1 ? JSON.parse(game.player2_ships || "[]") : JSON.parse(game.player1_ships || "[]");
+
+ const hit = opponentShips.some(ship => ship.row === row && ship.col === col);
+
+ if (hit) {
+ console.log(`HIT! Player ${player} hit an opponent's ship at (${row}, ${col})`);
+ state.hits.push({ row, col });
+ if (state.hits.length === opponentShips.length) {
+ state.gameOver = true;
+ console.log(`Player ${player} has won the game!`);
+ }
+ } else {
+ console.log(`MISS! Player ${player} attacked (${row}, ${col}) but missed.`);
+ state.misses.push({ row, col });
+ }
+
+ state.current_turn = player === 1 ? 2 : 1;
+
+ await pool.execute('UPDATE games SET game_state = ? WHERE id = ?', [JSON.stringify(state), gameId]);
+
+ res.json({ hit, state });
+ } catch (err) {
+ console.error("Attack error:", err);
+ res.status(500).json({ error: 'Database error' });
+ }
+ });
+
+ app.post('/api/save-result', async (req, res) => {
+ const { gameId, winner, loser, moves } = req.body;
+
+ if (!gameId || !winner || !loser || !moves) {
+ console.warn("Missing game result parameters.");
+ return res.status(400).json({ error: 'Missing parameters' });
+ }
+
+ try {
+ console.log(`Saving result: Winner - ${winner}, Loser - ${loser}, Moves - ${moves}`);
+ await pool.execute(
+ `INSERT INTO game_results (game_id, winner, loser, moves) VALUES (?, ?, ?, ?)`,
+ [gameId, winner, loser, moves]
+ );
+
+ console.log(`Game result saved for game ID ${gameId}`);
+ res.json({ message: "Game result saved" });
+ } catch (err) {
+ console.error("Error saving game result:", err);
+ res.status(500).json({ error: "Database error" });
+ }
+ });
+
+ const port = 4000;
+ app.listen(port, () => {
+ console.log(`Backend started on port ${port}`);
+ });
+
+ } catch (err) {
+ console.error("Database connection failed!", err);
+ }
+})();
diff --git a/z2/backend/package.json b/z2/backend/package.json
new file mode 100644
index 0000000..ff56f5c
--- /dev/null
+++ b/z2/backend/package.json
@@ -0,0 +1,18 @@
+{
+ "name": "battleship-backend",
+ "version": "1.0.0",
+ "description": "Backend for Battleship game",
+ "main": "index.js",
+ "scripts": {
+ "start": "node index.js"
+ },
+ "keywords": [],
+ "author": "",
+ "license": "MIT",
+ "dependencies": {
+ "cors": "^2.8.5",
+ "express": "^4.18.2",
+ "mysql2": "^3.12.0",
+ "pg": "^8.9.0"
+ }
+}
diff --git a/z2/deployment.yaml b/z2/deployment.yaml
new file mode 100644
index 0000000..3e591cb
--- /dev/null
+++ b/z2/deployment.yaml
@@ -0,0 +1,59 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+ name: battleship-backend
+ namespace: battleship-app
+ labels:
+ app: battleship-backend
+spec:
+ replicas: 1
+ selector:
+ matchLabels:
+ app: battleship-backend
+ template:
+ metadata:
+ labels:
+ app: battleship-backend
+ spec:
+ containers:
+ - name: battleship-backend
+ image: battleship-backend:latest
+ imagePullPolicy: Never
+ ports:
+ - containerPort: 4000
+ env:
+ - name: DB_HOST
+ value: mysql
+ - name: DB_PORT
+ value: "3306"
+ - name: DB_USER
+ value: root
+ - name: DB_PASSWORD
+ value: somepassword
+ - name: DB_NAME
+ value: battleship
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+ name: battleship-frontend
+ namespace: battleship-app
+ labels:
+ app: battleship-frontend
+spec:
+ replicas: 1
+ selector:
+ matchLabels:
+ app: battleship-frontend
+ template:
+ metadata:
+ labels:
+ app: battleship-frontend
+ spec:
+ containers:
+ - name: battleship-frontend
+ image: battleship-frontend:latest
+ imagePullPolicy: Never
+ ports:
+ - containerPort: 80
diff --git a/z2/docker-compose.yml b/z2/docker-compose.yml
new file mode 100644
index 0000000..a3756c0
--- /dev/null
+++ b/z2/docker-compose.yml
@@ -0,0 +1,51 @@
+version: '3.8'
+
+services:
+ mysql:
+ image: mysql:8.0.30
+ container_name: battleship_mysql
+ restart: unless-stopped
+ environment:
+ - MYSQL_ROOT_PASSWORD=somepassword
+ - MYSQL_DATABASE=battleship
+ ports:
+ - "3306:3306"
+ networks:
+ - app-net
+ volumes:
+ - db_data:/var/lib/mysql
+
+ backend:
+ build: ./backend
+ container_name: battleship_backend
+ restart: unless-stopped
+ environment:
+ - DB_HOST=mysql
+ - DB_PORT=3306
+ - DB_USER=root
+ - DB_PASSWORD=somepassword
+ - DB_NAME=battleship
+ ports:
+ - "4000:4000"
+ networks:
+ - app-net
+ depends_on:
+ - mysql
+
+ frontend:
+ build: ./frontend
+ container_name: battleship_frontend
+ restart: unless-stopped
+ depends_on:
+ - backend
+ ports:
+ - "3001:80"
+ networks:
+ - app-net
+
+networks:
+ app-net:
+ driver: bridge
+
+volumes:
+ db_data:
diff --git a/z2/frontend/.gitignore b/z2/frontend/.gitignore
new file mode 100644
index 0000000..a547bf3
--- /dev/null
+++ b/z2/frontend/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
diff --git a/z2/frontend/Dockerfile b/z2/frontend/Dockerfile
new file mode 100644
index 0000000..5336955
--- /dev/null
+++ b/z2/frontend/Dockerfile
@@ -0,0 +1,28 @@
+# --- Build stage ---
+ FROM node:18-alpine AS build
+
+ WORKDIR /app
+
+
+ COPY package*.json ./
+
+
+ RUN npm install
+
+
+ COPY . .
+
+
+ RUN npm run build
+
+
+ FROM nginx:alpine
+
+
+ COPY --from=build /app/dist /usr/share/nginx/html
+
+
+ EXPOSE 80
+
+ CMD ["nginx", "-g", "daemon off;"]
+
\ No newline at end of file
diff --git a/z2/frontend/README.md b/z2/frontend/README.md
new file mode 100644
index 0000000..aa575c9
--- /dev/null
+++ b/z2/frontend/README.md
@@ -0,0 +1,110 @@
+# Battleship Application on Kubernetes
+
+## Overview
+This application implements a Battleship game system composed of three main components:
+- **Backend:** Handles game logic and communicates with the database.
+- **Frontend:** Provides the web user interface for playing the game.
+- **MySQL Database:** Stores game data persistently.
+
+The application is deployed in a Kubernetes cluster using Deployments, a StatefulSet with persistent storage, and Services for network exposure.
+
+## Containers Used
+- **battleship-backend:**
+ - **Description:** Contains the backend logic for the game.
+ - **Port:** Listens on port 4000.
+ - **Configuration:** Uses environment variables to connect to the MySQL database.
+
+- **battleship-frontend:**
+ - **Description:** Hosts the web user interface for the game.
+ - **Port:** Listens on port 80.
+ - **Exposure:** Exposed via a NodePort (30001).
+
+- **MySQL (battleship-mysql):**
+ - **Description:** Runs a MySQL database (version 8.0.30) in a StatefulSet.
+ - **Port:** Uses port 3306.
+ - **Persistence:** Uses a PersistentVolume (PV) and PersistentVolumeClaim (PVC) for data storage.
+
+## Kubernetes Objects
+- **Namespace:**
+ - **battleship-app**
+ All objects (Deployments, StatefulSet, Services, PV, PVC) are created within this namespace.
+
+- **Deployments:**
+ - **battleship-backend:** Manages the backend pods.
+ - **battleship-frontend:** Manages the frontend pods.
+
+- **StatefulSet:**
+ - **battleship-mysql:** Manages the MySQL pods with stable identities and persistent storage. It includes:
+ - **PersistentVolume (mysql-pv):** Provides 1Gi storage (using a hostPath at `/mnt/data/mysql`).
+ - **PersistentVolumeClaim (mysql-pvc):** Claims the persistent storage for MySQL.
+
+- **Services:**
+ - **MySQL Service:** Exposes the MySQL StatefulSet on port 3306.
+ - **Backend Service:** Exposes the backend on port 4000 (via NodePort 30000).
+ - **Frontend Service:** Exposes the frontend on port 80 (via NodePort 30001).
+
+## Virtual Networks and Named Volumes
+- **Virtual Networks:**
+ Kubernetes provides internal networking for the cluster, and Services offer stable endpoints for communication between pods.
+ *Note:* In the original Docker Compose configuration, a network named `app-net` was defined; in Kubernetes, the cluster’s internal network is used.
+
+- **Named Volumes:**
+ The MySQL StatefulSet uses a PersistentVolume and a PersistentVolumeClaim to ensure data persistence. This setup guarantees that data (e.g., the game database) survives pod restarts or rescheduling.
+
+## Container Configuration
+- **Environment Variables:**
+ - **Backend Container:**
+ Configured with variables such as `DB_HOST`, `DB_PORT`, `DB_USER`, `DB_PASSWORD`, and `DB_NAME` to connect to the MySQL database.
+ - **MySQL Container:**
+ Configured with variables `MYSQL_ROOT_PASSWORD` and `MYSQL_DATABASE` to initialize the database.
+
+- **Ports:**
+ - **Backend:** Container port 4000, exposed on NodePort 30000.
+ - **Frontend:** Container port 80, exposed on NodePort 30001.
+ - **MySQL:** Container port 3306, exposed internally on port 3306.
+
+- **Image Pull Policy:**
+ The backend and frontend Deployments use `imagePullPolicy: Never` assuming images are built locally.
+
+## How to Prepare, Run, Pause, and Remove the Application
+
+### Preparation
+1. **Build Docker Images:**
+ Execute the `prepare-app.sh` script to build the Docker images for the backend and frontend:
+ ```bash
+ ./prepare-app.sh
+ ```
+
+### Running the Application
+1. **Deploy the Application:**
+ Use the `start-app.sh` script to deploy the namespace, Deployments, StatefulSet, and Services:
+ ```bash
+ ./start-app.sh
+ ```
+
+### Pausing the Application
+1. **Scale Down the Application:**
+ If you need to temporarily pause the application without deleting objects (thus preserving the data), use:
+ ```bash
+ ./stop-app.sh
+ ```
+ *Note:* This script scales the Deployments and StatefulSet to 0 replicas.
+
+### Removing the Application
+1. **Delete All Kubernetes Objects:**
+ To completely remove the application—including Deployments, StatefulSet, Services, and the Namespace—execute:
+ ```bash
+ ./remove-app.sh
+ ```
+ *Important:* Deleting the objects may also remove the associated PersistentVolume depending on its reclaim policy. To preserve data, consider setting the PersistentVolume's reclaim policy to `Retain`.
+
+## How to Access the Application in a Web Browser
+- **Frontend Access:**
+ The frontend is exposed via a NodePort on port **30001**.
+ Open a web browser and navigate to:
+ ```
+ http://<Node-IP>:30001
+ ```
+ Replace `<Node-IP>` with the IP address of one of your Kubernetes nodes.
+
+
diff --git a/z2/frontend/eslint.config.js b/z2/frontend/eslint.config.js
new file mode 100644
index 0000000..ec2b712
--- /dev/null
+++ b/z2/frontend/eslint.config.js
@@ -0,0 +1,33 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+
+export default [
+ { ignores: ['dist'] },
+ {
+ files: ['**/*.{js,jsx}'],
+ languageOptions: {
+ ecmaVersion: 2020,
+ globals: globals.browser,
+ parserOptions: {
+ ecmaVersion: 'latest',
+ ecmaFeatures: { jsx: true },
+ sourceType: 'module',
+ },
+ },
+ plugins: {
+ 'react-hooks': reactHooks,
+ 'react-refresh': reactRefresh,
+ },
+ rules: {
+ ...js.configs.recommended.rules,
+ ...reactHooks.configs.recommended.rules,
+ 'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
+ 'react-refresh/only-export-components': [
+ 'warn',
+ { allowConstantExport: true },
+ ],
+ },
+ },
+]
diff --git a/z2/frontend/index.html b/z2/frontend/index.html
new file mode 100644
index 0000000..0c589ec
--- /dev/null
+++ b/z2/frontend/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+ <head>
+ <meta charset="UTF-8" />
+ <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+ <title>Vite + React</title>
+ </head>
+ <body>
+ <div id="root"></div>
+ <script type="module" src="/src/main.jsx"></script>
+ </body>
+</html>
diff --git a/z2/frontend/package.json b/z2/frontend/package.json
new file mode 100644
index 0000000..902fd98
--- /dev/null
+++ b/z2/frontend/package.json
@@ -0,0 +1,27 @@
+{
+ "name": "frontend",
+ "private": true,
+ "version": "0.0.0",
+ "type": "module",
+ "scripts": {
+ "dev": "vite",
+ "build": "vite build",
+ "lint": "eslint .",
+ "preview": "vite preview"
+ },
+ "dependencies": {
+ "react": "^19.0.0",
+ "react-dom": "^19.0.0"
+ },
+ "devDependencies": {
+ "@eslint/js": "^9.21.0",
+ "@types/react": "^19.0.10",
+ "@types/react-dom": "^19.0.4",
+ "@vitejs/plugin-react": "^4.3.4",
+ "eslint": "^9.21.0",
+ "eslint-plugin-react-hooks": "^5.1.0",
+ "eslint-plugin-react-refresh": "^0.4.19",
+ "globals": "^15.15.0",
+ "vite": "^6.2.0"
+ }
+}
diff --git a/z2/frontend/public/vite.svg b/z2/frontend/public/vite.svg
new file mode 100644
index 0000000..e7b8dfb
--- /dev/null
+++ b/z2/frontend/public/vite.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
\ No newline at end of file
diff --git a/z2/frontend/src/App.css b/z2/frontend/src/App.css
new file mode 100644
index 0000000..2e22a36
--- /dev/null
+++ b/z2/frontend/src/App.css
@@ -0,0 +1,42 @@
+.app-container {
+ font-family: 'Arial', sans-serif;
+ text-align: center;
+ padding: 20px;
+ background-color: #f0f8ff;
+ min-height: 100vh;
+}
+
+.game-controls {
+ margin: 20px 0;
+}
+
+.btn {
+ padding: 10px 20px;
+ font-size: 16px;
+ background-color: #0077cc;
+ color: white;
+ border: none;
+ border-radius: 5px;
+ cursor: pointer;
+ transition: background-color 0.3s;
+}
+
+.btn:hover {
+ background-color: #005fa3;
+}
+
+.game-board {
+ margin-top: 20px;
+}
+
+.game-message {
+ margin-top: 20px;
+ font-size: 18px;
+ color: #333;
+}
+
+.game-over {
+ font-size: 24px;
+ color: red;
+ margin-top: 10px;
+}
diff --git a/z2/frontend/src/App.jsx b/z2/frontend/src/App.jsx
new file mode 100644
index 0000000..b97fc75
--- /dev/null
+++ b/z2/frontend/src/App.jsx
@@ -0,0 +1,107 @@
+import React, { useState } from 'react';
+import PlayerForm from './components/PlayerForm';
+import PlacementBoard from './components/PlacementBoard';
+import GameBoard from './components/GameBoard';
+
+function App() {
+ const [step, setStep] = useState(0);
+ const [gameId, setGameId] = useState(null);
+ const [player1Name, setPlayer1Name] = useState('');
+ const [player2Name, setPlayer2Name] = useState('');
+ const [player1Ships, setPlayer1Ships] = useState([]);
+ const [player2Ships, setPlayer2Ships] = useState([]);
+
+ const handlePlayersSubmit = async (p1, p2) => {
+ setPlayer1Name(p1);
+ setPlayer2Name(p2);
+
+ try {
+ const response = await fetch('http://localhost:30000/api/new-game', {
+ method: 'POST',
+ headers: { 'Content-Type': 'application/json' },
+ body: JSON.stringify({ player1: p1, player2: p2 })
+ });
+
+ const data = await response.json();
+ if (data.gameId) {
+ setGameId(data.gameId);
+ setStep(1);
+ } else {
+ console.error('Game creation error:', data);
+ }
+ } catch (error) {
+ console.error('Network error:', error);
+ }
+ };
+
+ const handlePlacementDone = async (ships) => {
+ if (!gameId) {
+ console.error('Error: gameId is missing!');
+ return;
+ }
+
+ try {
+ const response = await fetch('http://localhost:30000/api/place-ships', {
+ method: 'POST',
+ headers: { 'Content-Type': 'application/json' },
+ body: JSON.stringify({ gameId, player: step, ships })
+ });
+
+ const data = await response.json();
+ if (data.message) {
+ console.log(`Ships of player ${step} saved on server.`);
+ if (step === 1) {
+ setPlayer1Ships(ships);
+ setStep(2);
+ } else if (step === 2) {
+ setPlayer2Ships(ships);
+ setStep(3);
+ }
+ } else {
+ console.error('Error saving ships:', data);
+ }
+ } catch (error) {
+ console.error('Network error when saving ships:', error);
+ }
+ };
+
+
+ const resetGame = () => {
+ setStep(0);
+ setGameId(null);
+ setPlayer1Name('');
+ setPlayer2Name('');
+ setPlayer1Ships([]);
+ setPlayer2Ships([]);
+ };
+
+ return (
+ <div className="app-container">
+ {step === 0 && <PlayerForm onSubmit={handlePlayersSubmit} />}
+ {step === 1 && (
+ <PlacementBoard
+ playerName={player1Name}
+ onPlacementDone={handlePlacementDone}
+ />
+ )}
+ {step === 2 && (
+ <PlacementBoard
+ playerName={player2Name}
+ onPlacementDone={handlePlacementDone}
+ />
+ )}
+ {step === 3 && (
+ <GameBoard
+ gameId={gameId}
+ player1Name={player1Name}
+ player2Name={player2Name}
+ player1Ships={player1Ships}
+ player2Ships={player2Ships}
+ onNewGame={resetGame}
+ />
+ )}
+ </div>
+ );
+}
+
+export default App;
diff --git a/z2/frontend/src/assets/react.svg b/z2/frontend/src/assets/react.svg
new file mode 100644
index 0000000..6c87de9
--- /dev/null
+++ b/z2/frontend/src/assets/react.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
\ No newline at end of file
diff --git a/z2/frontend/src/components/Board.css b/z2/frontend/src/components/Board.css
new file mode 100644
index 0000000..3deddb7
--- /dev/null
+++ b/z2/frontend/src/components/Board.css
@@ -0,0 +1,9 @@
+.board {
+ display: inline-block;
+ border: 2px solid #333;
+ }
+
+ .board-row {
+ display: flex;
+ }
+
\ No newline at end of file
diff --git a/z2/frontend/src/components/Board.jsx b/z2/frontend/src/components/Board.jsx
new file mode 100644
index 0000000..9111972
--- /dev/null
+++ b/z2/frontend/src/components/Board.jsx
@@ -0,0 +1,46 @@
+import React from 'react';
+import Cell from './Cell';
+import './Board.css';
+
+function Board({
+ boardSize,
+ ships = [],
+ hits = [],
+ misses = [],
+ sunkShips = [],
+ onCellClick,
+ hideShips = false
+}) {
+ const rows = Array.from({ length: boardSize }, (_, i) => i);
+ const cols = Array.from({ length: boardSize }, (_, i) => i);
+
+ return (
+ <div className="board">
+ {rows.map((r) => (
+ <div key={r} className="board-row">
+ {cols.map((c) => {
+ const hasShip = ships.some((s) => s.row === r && s.col === c);
+ const isHit = hits.some((h) => h.row === r && h.col === c);
+ const isMiss = misses.some((m) => m.row === r && m.col === c);
+ const isSunk = sunkShips.some((s) => s.row === r && s.col === c);
+
+ return (
+ <Cell
+ key={`${r}-${c}`}
+ row={r}
+ col={c}
+ hasShip={hasShip && !hideShips}
+ isHit={isHit}
+ isMiss={isMiss}
+ isSunk={isSunk}
+ onClick={onCellClick}
+ />
+ );
+ })}
+ </div>
+ ))}
+ </div>
+ );
+}
+
+export default Board;
diff --git a/z2/frontend/src/components/Cell.css b/z2/frontend/src/components/Cell.css
new file mode 100644
index 0000000..c5c5ee2
--- /dev/null
+++ b/z2/frontend/src/components/Cell.css
@@ -0,0 +1,24 @@
+.cell {
+ width: 30px;
+ height: 30px;
+ border: 1px solid black;
+ display: inline-block;
+ background-color: white;
+ }
+
+ .cell.hit {
+ background-color: red !important;
+ }
+
+ .cell.miss {
+ background-color: green !important;
+ }
+
+ .cell.sunk {
+ background-color: black !important;
+ }
+
+ .cell.has-ship {
+ background-color: blue;
+ }
+
\ No newline at end of file
diff --git a/z2/frontend/src/components/Cell.jsx b/z2/frontend/src/components/Cell.jsx
new file mode 100644
index 0000000..b7fdffb
--- /dev/null
+++ b/z2/frontend/src/components/Cell.jsx
@@ -0,0 +1,24 @@
+import React from 'react';
+import './Cell.css';
+
+function Cell({ row, col, hasShip, isHit, isMiss, isSunk, onClick }) {
+ let className = 'cell';
+
+ if (isSunk) {
+ className += ' sunk';
+ } else if (isHit) {
+ className += ' hit';
+ } else if (isMiss) {
+ className += ' miss';
+ } else if (hasShip) {
+ className += ' has-ship';
+ }
+
+ const handleClick = () => {
+ if (onClick) onClick(row, col);
+ };
+
+ return <div className={className} onClick={handleClick} />;
+}
+
+export default Cell;
diff --git a/z2/frontend/src/components/GameBoard.css b/z2/frontend/src/components/GameBoard.css
new file mode 100644
index 0000000..f1d4ecf
--- /dev/null
+++ b/z2/frontend/src/components/GameBoard.css
@@ -0,0 +1,66 @@
+.game-board {
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ margin: 2rem auto;
+ max-width: 1000px;
+ padding: 2rem;
+ background-color: #ffffff;
+ border-radius: 12px;
+ box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+ font-family: 'Arial', sans-serif;
+}
+
+.turn-title {
+ margin-bottom: 1.5rem;
+ font-size: 2rem;
+ color: #333;
+}
+
+.winner-section {
+ text-align: center;
+ margin-bottom: 1.5rem;
+}
+
+.winner-section h2 {
+ font-size: 2rem;
+ color: #28a745;
+ margin-bottom: 1rem;
+}
+
+.new-game-button {
+ padding: 1rem 2rem;
+ font-size: 1.3rem;
+ border: none;
+ border-radius: 8px;
+ background-color: #007bff;
+ color: #fff;
+ cursor: pointer;
+ transition: background-color 0.3s;
+}
+
+.new-game-button:hover {
+ background-color: #0056b3;
+}
+
+.boards-container {
+ display: flex;
+ flex-wrap: wrap;
+ gap: 2rem;
+ justify-content: center;
+ width: 100%;
+}
+
+.board-wrapper {
+ flex: 1;
+ min-width: 300px;
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+}
+
+.board-wrapper h3 {
+ margin-bottom: 1rem;
+ font-size: 1.5rem;
+ color: #007bff;
+}
diff --git a/z2/frontend/src/components/GameBoard.jsx b/z2/frontend/src/components/GameBoard.jsx
new file mode 100644
index 0000000..ba23cea
--- /dev/null
+++ b/z2/frontend/src/components/GameBoard.jsx
@@ -0,0 +1,174 @@
+import React, { useState, useEffect } from 'react';
+import Board from './Board';
+import './GameBoard.css';
+
+function checkSunkShip(ships, hits) {
+ const sunkShipsArrays = ships.filter((ship) =>
+ ship.every((cell) =>
+ hits.some((hit) => hit.row === cell.row && hit.col === cell.col)
+ )
+ );
+
+ sunkShipsArrays.forEach((ship) => {
+ const size = ship.length;
+ if (size === 4) {
+ console.log('Battleship (4 cells) is sunk!');
+ } else if (size === 3) {
+ console.log('Cruiser (3 cells) is sunk!');
+ } else if (size === 2) {
+ console.log('Destroyer (2 cells) is sunk!');
+ } else if (size === 1) {
+ console.log('Submarine (1 cell) is sunk!');
+ }
+ });
+
+ return sunkShipsArrays.flat();
+}
+
+function GameBoard({ gameId, player1Name, player2Name, player1Ships, player2Ships, onNewGame }) {
+ const [currentPlayer, setCurrentPlayer] = useState(1);
+ const [hitsP1, setHitsP1] = useState([]);
+ const [missesP1, setMissesP1] = useState([]);
+ const [hitsP2, setHitsP2] = useState([]);
+ const [missesP2, setMissesP2] = useState([]);
+ const [sunkShipsP1, setSunkShipsP1] = useState([]);
+ const [sunkShipsP2, setSunkShipsP2] = useState([]);
+ const [winner, setWinner] = useState(null);
+
+ useEffect(() => {
+ console.log('player1Ships:', JSON.stringify(player1Ships, null, 2));
+ console.log('player2Ships:', JSON.stringify(player2Ships, null, 2));
+ }, []);
+
+ const saveGameResult = async (winnerName, loserName) => {
+ try {
+ const resp = await fetch('http://localhost:30000/api/save-result', {
+ method: 'POST',
+ headers: { 'Content-Type': 'application/json' },
+ body: JSON.stringify({
+ gameId,
+ winner: winnerName,
+ loser: loserName,
+ moves: hitsP1.length + hitsP2.length
+ })
+ });
+ const data = await resp.json();
+ console.log('Game result saved:', data);
+ } catch (err) {
+ console.error('Error saving game result:', err);
+ }
+ };
+
+ useEffect(() => {
+ const totalCellsP1 = player1Ships.flat().length;
+ const totalCellsP2 = player2Ships.flat().length;
+
+ if (hitsP1.length === totalCellsP2) {
+ setWinner(player1Name);
+ saveGameResult(player1Name, player2Name);
+ } else if (hitsP2.length === totalCellsP1) {
+ setWinner(player2Name);
+ saveGameResult(player2Name, player1Name);
+ }
+ }, [hitsP1, hitsP2, player1Ships, player2Ships, player1Name, player2Name]);
+
+ useEffect(() => {
+ const sunkForP1 = checkSunkShip(player1Ships, hitsP2);
+ const sunkForP2 = checkSunkShip(player2Ships, hitsP1);
+
+ setSunkShipsP1(sunkForP1);
+ setSunkShipsP2(sunkForP2);
+ }, [hitsP1, hitsP2, player1Ships, player2Ships]);
+
+ const handleAttack = (row, col, opponent) => {
+ if (winner) return;
+
+ let alreadyAttacked;
+ if (opponent === 2) {
+ alreadyAttacked = [...hitsP1, ...missesP1].some(
+ (cell) => cell.row === row && cell.col === col
+ );
+ } else {
+ alreadyAttacked = [...hitsP2, ...missesP2].some(
+ (cell) => cell.row === row && cell.col === col
+ );
+ }
+
+ if (alreadyAttacked) {
+ alert('You have already attacked this cell!');
+ return;
+ }
+
+ let isHit = false;
+ if (opponent === 2) {
+ isHit = player2Ships.flat().some((cell) => cell.row === row && cell.col === col);
+ if (isHit) {
+ setHitsP1([...hitsP1, { row, col }]);
+ console.log(`Player1 hit a ship at [${row},${col}] on Player2's board`);
+ } else {
+ setMissesP1([...missesP1, { row, col }]);
+ console.log(`Player1 missed at [${row},${col}] on Player2's board`);
+ }
+ } else {
+ isHit = player1Ships.flat().some((cell) => cell.row === row && cell.col === col);
+ if (isHit) {
+ setHitsP2([...hitsP2, { row, col }]);
+ console.log(`Player2 hit a ship at [${row},${col}] on Player1's board`);
+ } else {
+ setMissesP2([...missesP2, { row, col }]);
+ console.log(`Player2 missed at [${row},${col}] on Player1's board`);
+ }
+ }
+
+ if (!isHit) {
+ setCurrentPlayer(currentPlayer === 1 ? 2 : 1);
+ }
+ };
+
+ return (
+ <div className="game-board">
+ {winner ? (
+ <div className="winner-section">
+ <h2>Winner: {winner}!</h2>
+ <button className="new-game-button" onClick={onNewGame}>Start New Game</button>
+ </div>
+ ) : (
+ <h2 className="turn-title">Current turn: {currentPlayer === 1 ? player1Name : player2Name}</h2>
+ )}
+
+ <div className="boards-container">
+ <div className="board-wrapper">
+ <h3>{player1Name}'s Board</h3>
+ <Board
+ boardSize={10}
+ ships={player1Ships.flat()}
+ hits={hitsP2}
+ misses={missesP2}
+ sunkShips={sunkShipsP1}
+ onCellClick={
+ currentPlayer === 2 ? (r, c) => handleAttack(r, c, 1) : null
+ }
+ hideShips={true}
+ />
+ </div>
+
+ <div className="board-wrapper">
+ <h3>{player2Name}'s Board</h3>
+ <Board
+ boardSize={10}
+ ships={player2Ships.flat()}
+ hits={hitsP1}
+ misses={missesP1}
+ sunkShips={sunkShipsP2}
+ onCellClick={
+ currentPlayer === 1 ? (r, c) => handleAttack(r, c, 2) : null
+ }
+ hideShips={true}
+ />
+ </div>
+ </div>
+ </div>
+ );
+}
+
+export default GameBoard;
diff --git a/z2/frontend/src/components/Header.css b/z2/frontend/src/components/Header.css
new file mode 100644
index 0000000..37e0c60
--- /dev/null
+++ b/z2/frontend/src/components/Header.css
@@ -0,0 +1,12 @@
+.header {
+ background-color: #0077cc;
+ color: white;
+ padding: 20px 0;
+ margin-bottom: 20px;
+ }
+
+ .header h1 {
+ margin: 0;
+ font-size: 2.5em;
+ }
+
\ No newline at end of file
diff --git a/z2/frontend/src/components/Header.jsx b/z2/frontend/src/components/Header.jsx
new file mode 100644
index 0000000..bf0127c
--- /dev/null
+++ b/z2/frontend/src/components/Header.jsx
@@ -0,0 +1,12 @@
+import React from 'react';
+import './Header.css';
+
+const Header = ({ title }) => {
+ return (
+ <header className="header">
+ <h1>{title}</h1>
+ </header>
+ );
+};
+
+export default Header;
diff --git a/z2/frontend/src/components/PlacementBoard.css b/z2/frontend/src/components/PlacementBoard.css
new file mode 100644
index 0000000..fba4856
--- /dev/null
+++ b/z2/frontend/src/components/PlacementBoard.css
@@ -0,0 +1,73 @@
+.placement-board {
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ margin: 2rem auto;
+ max-width: 800px;
+ text-align: center;
+ background: #ffffff;
+ padding: 2rem;
+ border-radius: 12px;
+ box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+}
+
+.placement-board h2 {
+ margin-bottom: 1.5rem;
+ font-size: 2rem;
+ color: #333;
+}
+
+.controls {
+ display: flex;
+ flex-wrap: wrap;
+ gap: 1rem;
+ justify-content: center;
+ margin-bottom: 1.5rem;
+}
+
+.control-group {
+ display: flex;
+ flex-direction: column;
+ align-items: flex-start;
+}
+
+.ship-label,
+.orientation-label {
+ font-size: 1.1rem;
+ margin-bottom: 0.5rem;
+ color: #555;
+ font-weight: 600;
+}
+
+.ship-select,
+.orientation-select {
+ font-size: 1.1rem;
+ padding: 0.6rem;
+ border: 1px solid #ccc;
+ border-radius: 6px;
+ background-color: #f9f9f9;
+}
+
+.ship-select {
+ width: 220px;
+}
+
+.orientation-select {
+ width: 150px;
+}
+
+.finish-button {
+ margin-top: 1.5rem;
+ padding: 0.8rem 1.5rem;
+ font-size: 1.2rem;
+ cursor: pointer;
+ background-color: #28a745;
+ color: #fff;
+ border: none;
+ border-radius: 6px;
+ transition: background-color 0.3s;
+}
+
+.finish-button:hover {
+ background-color: #218838;
+}
diff --git a/z2/frontend/src/components/PlacementBoard.jsx b/z2/frontend/src/components/PlacementBoard.jsx
new file mode 100644
index 0000000..3541053
--- /dev/null
+++ b/z2/frontend/src/components/PlacementBoard.jsx
@@ -0,0 +1,135 @@
+import React, { useState } from 'react';
+import Board from './Board';
+import './PlacementBoard.css';
+
+const SHIPS_LIMIT = {
+ 'Battleship (4 cells)': { size: 4, max: 1 },
+ 'Cruiser (3 cells)': { size: 3, max: 2 },
+ 'Destroyer (2 cells)': { size: 2, max: 3 },
+ 'Submarine (1 cell)': { size: 1, max: 4 }
+};
+
+function PlacementBoard({ playerName, onPlacementDone }) {
+ const [ships, setShips] = useState([]);
+ const [selectedShipType, setSelectedShipType] = useState('Battleship (4 cells)');
+ const [shipCounts, setShipCounts] = useState({});
+ const [orientation, setOrientation] = useState('horizontal');
+
+ const isOverlap = (newShip) => {
+ for (const ship of ships) {
+ for (const cell of ship) {
+ for (const newCell of newShip) {
+ if (cell.row === newCell.row && cell.col === newCell.col) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+ };
+
+ const handleCellClick = (row, col) => {
+ const shipData = SHIPS_LIMIT[selectedShipType];
+ if (!shipData) {
+ alert('Invalid ship type!');
+ return;
+ }
+
+ const currentCount = shipCounts[selectedShipType] || 0;
+ if (currentCount >= shipData.max) {
+ alert(`You can only place ${shipData.max} ${selectedShipType}!`);
+ return;
+ }
+
+ let newShip = [];
+ if (orientation === 'horizontal') {
+ if (col + shipData.size > 10) {
+ alert('Ship is out of bounds horizontally!');
+ return;
+ }
+ for (let i = 0; i < shipData.size; i++) {
+ newShip.push({ row, col: col + i });
+ }
+ } else {
+ if (row + shipData.size > 10) {
+ alert('Ship is out of bounds vertically!');
+ return;
+ }
+ for (let i = 0; i < shipData.size; i++) {
+ newShip.push({ row: row + i, col });
+ }
+ }
+
+ if (isOverlap(newShip)) {
+ alert('Ships cannot overlap!');
+ return;
+ }
+
+ setShips([...ships, newShip]);
+ setShipCounts({
+ ...shipCounts,
+ [selectedShipType]: currentCount + 1
+ });
+ };
+
+ const handleDone = () => {
+
+ if (
+ Object.keys(SHIPS_LIMIT).some(
+ (type) => (shipCounts[type] || 0) < SHIPS_LIMIT[type].max
+ )
+ ) {
+ alert('You must place all required ships!');
+ return;
+ }
+ onPlacementDone(ships);
+ };
+
+ return (
+ <div className="placement-board">
+ <h2>Ship Placement: {playerName}</h2>
+
+ <div className="controls">
+ <div className="control-group">
+ <label className="ship-label">Ship type:</label>
+ <select
+ className="ship-select"
+ onChange={(e) => setSelectedShipType(e.target.value)}
+ value={selectedShipType}
+ >
+ {Object.keys(SHIPS_LIMIT).map((ship, index) => (
+ <option key={index} value={ship}>
+ {ship} ({shipCounts[ship] || 0}/{SHIPS_LIMIT[ship].max})
+ </option>
+ ))}
+ </select>
+ </div>
+
+ <div className="control-group">
+ <label className="orientation-label">Orientation:</label>
+ <select
+ className="orientation-select"
+ onChange={(e) => setOrientation(e.target.value)}
+ value={orientation}
+ >
+ <option value="horizontal">Horizontal</option>
+ <option value="vertical">Vertical</option>
+ </select>
+ </div>
+ </div>
+
+ <Board
+ boardSize={10}
+ ships={ships.flat()}
+ onCellClick={handleCellClick}
+ hideShips={false}
+ />
+
+ <button className="finish-button" onClick={handleDone}>
+ Finish Placement
+ </button>
+ </div>
+ );
+}
+
+export default PlacementBoard;
diff --git a/z2/frontend/src/components/PlayerForm.css b/z2/frontend/src/components/PlayerForm.css
new file mode 100644
index 0000000..2a1a51a
--- /dev/null
+++ b/z2/frontend/src/components/PlayerForm.css
@@ -0,0 +1,123 @@
+.player-form-container {
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ padding: 2rem;
+ background: #f7f9fc;
+ min-height: 100vh;
+ font-family: 'Arial', sans-serif;
+}
+
+.player-form-card,
+.results-card {
+ background: #ffffff;
+ border-radius: 8px;
+ box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+ width: 400px;
+ margin-bottom: 2rem;
+ padding: 2rem;
+}
+
+.form-title {
+ text-align: center;
+ margin-bottom: 1.5rem;
+ font-size: 1.8rem;
+ color: #333;
+}
+
+.player-form {
+ display: flex;
+ flex-direction: column;
+}
+
+.form-group {
+ display: flex;
+ flex-direction: column;
+ margin-bottom: 1.2rem;
+}
+
+.form-group label {
+ margin-bottom: 0.5rem;
+ font-size: 1.1rem;
+ color: #555;
+}
+
+.form-group input {
+ padding: 0.8rem;
+ font-size: 1.1rem;
+ border: 1px solid #ccc;
+ border-radius: 4px;
+ transition: border-color 0.3s;
+}
+
+.form-group input:focus {
+ border-color: #007bff;
+ outline: none;
+}
+
+.submit-button {
+ padding: 0.8rem;
+ font-size: 1.2rem;
+ background-color: #007bff;
+ color: #fff;
+ border: none;
+ border-radius: 4px;
+ cursor: pointer;
+ transition: background-color 0.3s;
+}
+
+.submit-button:hover {
+ background-color: #0056b3;
+}
+
+.results-section {
+ width: 400px;
+ text-align: center;
+}
+
+.toggle-results-button {
+ padding: 0.8rem;
+ font-size: 1.2rem;
+ background-color: #28a745;
+ color: #fff;
+ border: none;
+ border-radius: 4px;
+ cursor: pointer;
+ margin-bottom: 1rem;
+ transition: background-color 0.3s;
+}
+
+.toggle-results-button:hover {
+ background-color: #218838;
+}
+
+.results-title {
+ font-size: 1.6rem;
+ text-align: center;
+ margin-bottom: 1rem;
+ color: #333;
+}
+
+.results-table {
+ width: 100%;
+ border-collapse: collapse;
+}
+
+.results-table th,
+.results-table td {
+ border: 1px solid #ddd;
+ padding: 0.8rem;
+ font-size: 1.1rem;
+ text-align: center;
+}
+
+.results-table th {
+ background-color: #007bff;
+ color: #fff;
+}
+
+.no-results {
+ font-size: 1.1rem;
+ text-align: center;
+ color: #777;
+}
diff --git a/z2/frontend/src/components/PlayerForm.jsx b/z2/frontend/src/components/PlayerForm.jsx
new file mode 100644
index 0000000..93cade1
--- /dev/null
+++ b/z2/frontend/src/components/PlayerForm.jsx
@@ -0,0 +1,104 @@
+import React, { useState } from 'react';
+import './PlayerForm.css';
+
+function PlayerForm({ onSubmit }) {
+ const [p1, setP1] = useState('');
+ const [p2, setP2] = useState('');
+ const [results, setResults] = useState([]);
+ const [showResults, setShowResults] = useState(false);
+
+ const handleSubmit = (e) => {
+ e.preventDefault();
+ if (p1.trim() === '' || p2.trim() === '') {
+ alert('Please enter both player names!');
+ console.log('Error: Missing player names');
+ return;
+ }
+ console.log('Starting new game with players:', p1, p2);
+ onSubmit(p1, p2);
+ };
+
+ const fetchResults = () => {
+ console.log('Fetching previous game results...');
+ fetch('http://localhost:30000/api/results')
+ .then((resp) => resp.json())
+ .then((data) => {
+ console.log('Fetched results:', data.results);
+ setResults(data.results);
+ })
+ .catch((err) => console.error('Error fetching results:', err));
+ };
+
+ const handleToggleResults = () => {
+ if (!showResults) {
+ fetchResults();
+ }
+ setShowResults(!showResults);
+ };
+
+ return (
+ <div className="player-form-container">
+ <div className="player-form-card">
+ <h2 className="form-title">Enter Player Names</h2>
+ <form onSubmit={handleSubmit} className="player-form">
+ <div className="form-group">
+ <label>Player 1:</label>
+ <input
+ type="text"
+ value={p1}
+ onChange={(e) => setP1(e.target.value)}
+ placeholder="Enter Player 1 name"
+ required
+ />
+ </div>
+ <div className="form-group">
+ <label>Player 2:</label>
+ <input
+ type="text"
+ value={p2}
+ onChange={(e) => setP2(e.target.value)}
+ placeholder="Enter Player 2 name"
+ required
+ />
+ </div>
+ <button type="submit" className="submit-button">Start Game</button>
+ </form>
+ </div>
+
+ <div className="results-section">
+ <button className="toggle-results-button" onClick={handleToggleResults}>
+ {showResults ? 'Hide Results' : 'Show Results'}
+ </button>
+ {showResults && (
+ <div className="results-card">
+ <h3 className="results-title">Previous Game Results</h3>
+ {results.length > 0 ? (
+ <table className="results-table">
+ <thead>
+ <tr>
+ <th>Winner</th>
+ <th>Loser</th>
+ <th>Shots</th>
+ </tr>
+ </thead>
+ <tbody>
+ {results.map((result, index) => (
+ <tr key={index}>
+ <td>{result.winner}</td>
+ <td>{result.loser}</td>
+ <td>{result.moves}</td>
+ </tr>
+ ))}
+ </tbody>
+ </table>
+ ) : (
+ <p className="no-results">No previous results available.</p>
+ )}
+ </div>
+ )}
+ </div>
+ </div>
+ );
+}
+
+export default PlayerForm;
diff --git a/z2/frontend/src/index.css b/z2/frontend/src/index.css
new file mode 100644
index 0000000..e69de29
diff --git a/z2/frontend/src/main.jsx b/z2/frontend/src/main.jsx
new file mode 100644
index 0000000..b9a1a6d
--- /dev/null
+++ b/z2/frontend/src/main.jsx
@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.jsx'
+
+createRoot(document.getElementById('root')).render(
+ <StrictMode>
+ <App />
+ </StrictMode>,
+)
diff --git a/z2/frontend/vite.config.js b/z2/frontend/vite.config.js
new file mode 100644
index 0000000..8b0f57b
--- /dev/null
+++ b/z2/frontend/vite.config.js
@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+ plugins: [react()],
+})
diff --git a/z2/namespace.yaml b/z2/namespace.yaml
new file mode 100644
index 0000000..6a1748b
--- /dev/null
+++ b/z2/namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+ name: battleship-app
diff --git a/z2/prepare-app.sh b/z2/prepare-app.sh
new file mode 100644
index 0000000..92c2617
--- /dev/null
+++ b/z2/prepare-app.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+echo "Building Docker image for backend..."
+docker build -t battleship-backend ./backend
+
+echo "Building Docker image for frontend..."
+docker build -t battleship-frontend ./frontend
+
+echo "Docker images built."
diff --git a/z2/remove-app.sh b/z2/remove-app.sh
new file mode 100644
index 0000000..26739de
--- /dev/null
+++ b/z2/remove-app.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+echo "Deleting Services for MySQL, backend, and frontend..."
+kubectl delete -f service.yaml -n battleship-app
+
+echo "Deleting StatefulSet for MySQL..."
+kubectl delete -f statefulset.yaml -n battleship-app
+
+echo "Deleting Deployments for backend and frontend..."
+kubectl delete -f deployment.yaml -n battleship-app
+
+echo "Deleting namespace battleship-app (and all objects within it)..."
+kubectl delete -f namespace.yaml
+
+echo "Application completely removed from Kubernetes."
diff --git a/z2/service.yaml b/z2/service.yaml
new file mode 100644
index 0000000..22022c2
--- /dev/null
+++ b/z2/service.yaml
@@ -0,0 +1,40 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+ name: mysql
+ namespace: battleship-app
+spec:
+ ports:
+ - port: 3306
+ targetPort: 3306
+ selector:
+ app: battleship-mysql
+---
+apiVersion: v1
+kind: Service
+metadata:
+ name: backend
+ namespace: battleship-app
+spec:
+ type: NodePort
+ ports:
+ - port: 4000
+ targetPort: 4000
+ nodePort: 30000
+ selector:
+ app: battleship-backend
+---
+apiVersion: v1
+kind: Service
+metadata:
+ name: frontend
+ namespace: battleship-app
+spec:
+ type: NodePort
+ ports:
+ - port: 80
+ targetPort: 80
+ nodePort: 30001
+ selector:
+ app: battleship-frontend
diff --git a/z2/start-app.sh b/z2/start-app.sh
new file mode 100644
index 0000000..c57fd99
--- /dev/null
+++ b/z2/start-app.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+echo "Creating namespace battleship-app..."
+kubectl apply -f namespace.yaml
+
+echo "Creating Deployment for backend and frontend..."
+kubectl apply -f deployment.yaml -n battleship-app
+
+echo "Creating StatefulSet for MySQL..."
+kubectl apply -f statefulset.yaml -n battleship-app
+
+echo "Creating Service for MySQL, backend, and frontend..."
+kubectl apply -f service.yaml -n battleship-app
+
+echo "Application deployed in Kubernetes."
diff --git a/z2/statefulset.yaml b/z2/statefulset.yaml
new file mode 100644
index 0000000..ea29ea3
--- /dev/null
+++ b/z2/statefulset.yaml
@@ -0,0 +1,58 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+ name: mysql-pv
+ namespace: battleship-app
+spec:
+ capacity:
+ storage: 1Gi
+ accessModes:
+ - ReadWriteOnce
+ hostPath:
+ path: /mnt/data/mysql
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+ name: mysql-pvc
+ namespace: battleship-app
+spec:
+ accessModes:
+ - ReadWriteOnce
+ resources:
+ requests:
+ storage: 1Gi
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+ name: battleship-mysql
+ namespace: battleship-app
+spec:
+ serviceName: "mysql"
+ replicas: 1
+ selector:
+ matchLabels:
+ app: battleship-mysql
+ template:
+ metadata:
+ labels:
+ app: battleship-mysql
+ spec:
+ containers:
+ - name: battleship-mysql
+ image: mysql:8.0.30
+ ports:
+ - containerPort: 3306
+ env:
+ - name: MYSQL_ROOT_PASSWORD
+ value: somepassword
+ - name: MYSQL_DATABASE
+ value: battleship
+ volumeMounts:
+ - name: mysql-data
+ mountPath: /var/lib/mysql
+ volumes:
+ - name: mysql-data
+ persistentVolumeClaim:
+ claimName: mysql-pvc
diff --git a/z2/stop-app.sh b/z2/stop-app.sh
new file mode 100644
index 0000000..7d4d729
--- /dev/null
+++ b/z2/stop-app.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+echo "Stopping the application by scaling down to 0 replicas..."
+
+echo "Scaling down the Deployment for backend to 0..."
+kubectl scale deployment battleship-backend -n battleship-app --replicas=0
+
+echo "Scaling down the Deployment for frontend to 0..."
+kubectl scale deployment battleship-frontend -n battleship-app --replicas=0
+
+echo "Scaling down the StatefulSet for MySQL to 0..."
+kubectl scale statefulset battleship-mysql -n battleship-app --replicas=0
+
+echo "Application stopped, data (e.g., database) is preserved."