Production-Branch-Deployment-CI-CD.yml

# ===================================================== Production Branch CI-CD Configuration =====================================================

name: Production-Branch-Deployment-CI-CD

# Trigger the action if and only if a pull request was PUSHED or MERGED into the production branch
# This workflow will do a final CI before deploying changes to the Production server with CD

on:
  push:
    branches:
      - production-branch

jobs:

  # ========================== Production-Branch-Pre-Deployment-Tests ==========================

  Production-Branch-Pre-Deployment-Tests:

    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [18.x]

    steps:
    - uses: actions/checkout@v3

    #  Runs the following commands on the newly created Linux instance for integration testing

    # Installing Node.js at the test instance
    - name: Setting up Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v3
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'npm'

    # Printing the node version in the terminal
    - name: Checking Node Version
      run: node --version

    # Installation of Node packaging Manager (npm)
    - name: Installing Node packaging Manager (npm)
      run: npm ci

    # Setting up the environment variable from using credentials stored in GitHub actions secret
    - name: Setting up environment variables
      run: |
        echo "MY_ENV_VARIABLE=${{ secrets.ENV_FILE }}" >> .env

    # Installation of Node packaging Manager (npm)
    - name: Installing project dependencies
      run: npm install

    # Checking if node modules were installed (Done by simply checking if the node_modules directory exists or not)
    - name: Checking if node_modules directory was created after installing NPM
      run: |
        if [ ! -d "node_modules" ]; then
          echo "Error: node_modules directory does not exist."
          exit 1
        fi

    # Installation of Process Manager 2 (PM2)
    - name: Installing Process Manager 2 (PM2)
      run: npm i pm2 -g

    # Start the application with Process Manager 2 (PM2)
    - name: Initiating the application with Process Manager 2 (PM2)
      run: pm2 start ./bin/www --name "production-server"

    # Log the status of application with Process Manager 2 (PM2)
    - name: Logging the status of application with Process Manager 2 (PM2)
      run: pm2 status all

  # ========================== Production-Branch-Deployment ==========================

  Production-Branch-Deployment:

    runs-on: ubuntu-latest

    needs: Production-Branch-Pre-Deployment-Tests

    # Deployment steps
    steps:

    - name: Deploying changes to Production Server

      uses: appleboy/ssh-action@master

      with:

        host: ${{secrets.EC2_PUBLIC_IP}}

        username: ubuntu

        key: ${{secrets.EC2_SSH_KEY}}

        script: |
          echo "Connected to Production Server instance"
          # Commands for deploying changes to server
          
          cd ExpressJs-Ecommerce-webdev-project-1
          sudo git pull
          sudo pm2 reload all