configure_project.yml

name: Configure Project

on:
  workflow_dispatch:
    inputs:
      new_project_name:
        description: 'The name for the project.'
        required: true
        default: 'My Awesome Project'
      project_description:
        description: 'A short description of the project.'
        required: true
        default: 'A new awesome project.'
      cpack_package_contact:
        description: 'The contact email for the project.'
        required: true
        default: 'user@example.com'
      project_homepage_url:
        description: "The URL for the project's homepage. Leave empty to use the repository URL."
        required: false
        default: 'Leave empty to use repository URL'

jobs:
  configure_project:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Configure Git
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"

      - name: Set project variables
        id: set-variables
        run: |
          # Convert the project name to snake_case for use in filenames and other contexts.
          PROJECT_NAME_LOWER=$(echo "${{ github.event.inputs.new_project_name }}" | tr '[:upper:]' '[:lower:]' | tr ' ' '_')
          echo "project_name_lower=$PROJECT_NAME_LOWER" >> $GITHUB_OUTPUT
          # Convert the project name to CamelCase for use in class names.
          PROJECT_NAME_CAMEL=$(echo "${{ github.event.inputs.new_project_name }}" | sed -e 's/\b\(.\)/\u\1/g' -e 's/ //g')
          echo "project_name_camel=$PROJECT_NAME_CAMEL" >> $GITHUB_OUTPUT

      - name: Set homepage URL
        id: set-url
        run: |
          if [ "${{ github.event.inputs.project_homepage_url }}" = "Leave empty to use repository URL" ] || [ -z "${{ github.event.inputs.project_homepage_url }}" ]; then
            echo "homepage_url=${{ github.server_url }}/${{ github.repository }}" >> $GITHUB_OUTPUT
          else
            echo "homepage_url=${{ github.event.inputs.project_homepage_url }}" >> $GITHUB_OUTPUT
          fi

      - name: Replace project template placeholders
        run: |
          # This command finds all files and uses 'sed' to replace all the placeholders.
          # The sed delimiter is changed from '/' to '|' to safely handle path names.
          find . -type f -not -path './.git/*' -not -path './.github/workflows/*' -exec sed -i \
            -e "s|{{PROJECT_NAME}}|${{ github.event.inputs.new_project_name }}|g" \
            -e "s|{{PROJECT_NAME_LOWER}}|${{ steps.set-variables.outputs.project_name_lower }}|g" \
            -e "s|{{PROJECT_NAME_CAMEL}}|${{ steps.set-variables.outputs.project_name_camel }}|g" \
            -e "s|{{PROJECT_DESCRIPTION}}|${{ github.event.inputs.project_description }}|g" \
            -e "s|{{PROJECT_REPOSITORY_URL}}|${{ github.server_url }}/${{ github.repository }}|g" \
            -e "s|{{PROJECT_HOMEPAGE_URL}}|${{ steps.set-url.outputs.homepage_url }}|g" \
            -e "s|{{CPACK_PACKAGE_CONTACT}}|${{ github.event.inputs.cpack_package_contact }}|g" \
            {} +
      
      - name: Remove template-specific files and instructions
        run: |
          rm -f UNLICENSE
          LINE=$(grep -n -m 1 "^---" README.md | cut -d: -f1)
          if [ -n "$LINE" ]; then
            if tail -n +$LINE README.md | grep -q "## ⚙️ How to Use This Template"; then
              sed -i "$LINE,\$d" README.md
            fi
          fi

      - name: Create a pull request with configured project
        uses: peter-evans/create-pull-request@v6
        with:
          title: 'Configure project from template'
          commit-message: 'Configure project from template'
          body: |
            This pull request configures the project from the template with the information you provided.
          branch: configure-project-${{ github.run_number }}
          token: ${{ secrets.GITHUB_TOKEN }}