A GitHub Action workflow that increments the version number in index.html and commits it back to the repository.

automatic_version_number.yml

name: Increment Version Number

on:
  workflow_dispatch:
    inputs:
      version_increment:
        description: 'Increment type (major/minor/patch)'
        required: true
        default: 'patch'
        type: choice
        options:
          - patch
          - minor
          - major

jobs:
  increment-version:
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
    
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'
    
    - name: Increment Version
      id: version_increment
      run: |
        # Read current version from index.html
        current_version=$(grep -oP '(?<=version: )[\d.]+' index.html)
        
        # Split version into major.minor.patch
        IFS='.' read -r major minor patch <<< "$current_version"
        
        # Increment version based on input
        case "${{ github.event.inputs.version_increment }}" in
          major)
            major=$((major + 1))
            minor=0
            patch=0
            ;;
          minor)
            minor=$((minor + 1))
            patch=0
            ;;
          patch)
            patch=$((patch + 1))
            ;;
        esac
        
        new_version="$major.$minor.$patch"
        
        # Update version in index.html
        sed -i "s/version: $current_version/version: $new_version/" index.html
        
        # Set output for use in commit step
        echo "new_version=$new_version" >> $GITHUB_OUTPUT
    
    - name: Commit and Push Changes
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        git config user.name github-actions
        git config user.email [email protected]
        git add index.html
        git commit -m "Bump version to ${{ steps.version_increment.outputs.new_version }}"
        git push