call-algolia-deployment-script.yml

# .github/workflows/call-algolia-deployment-script.yml
name: Call algolia deployment script on merge

on:
  push:
    branches:
      - gh-pages # Trigger only on push to the production branch

jobs:
  log-post-titles:
    runs-on: ubuntu-latest

    steps:
      # Step 1: Checkout the repository
      - name: Checkout code
        uses: actions/checkout@v2
        with:
          fetch-depth: 2 # Fetch the last two commits to ensure HEAD^ exists

      # Step 2: Get the list of new, modified, and deleted files
      - name: Get changed files
        id: changes
        run: |
          # Check if there is a previous commit
          if git rev-parse --verify HEAD^ > /dev/null 2>&1; then
            # Get added, modified, and deleted files in the _posts folder
            echo "There is a previous commit"
            new_files=$(git diff --name-only --diff-filter=A HEAD^ HEAD -- _posts/)
            modified_files=$(git diff --name-only --diff-filter=M HEAD^ HEAD -- _posts/)
            deleted_files=$(git diff --name-only --diff-filter=D HEAD^ HEAD -- _posts/)
          else
            # If no previous commit, compare against the index (for the first commit)
            echo "There is no previous commit"
            new_files=$(git diff --name-only --diff-filter=A HEAD -- _posts/)
            modified_files=$(git diff --name-only --diff-filter=M HEAD -- _posts/)
            deleted_files=$(git diff --name-only --diff-filter=D HEAD -- _posts/)
          fi

          # Replace newlines with commas to ensure output is valid
          new_files_escaped=$(echo "$new_files" | tr '\n' '|')
          modified_files_escaped=$(echo "$modified_files" | tr '\n' '|')
          deleted_files_escaped=$(echo "$deleted_files" | tr '\n' '|')

          # Debugging: output the results to check what's captured
          echo "New files: $new_files_escaped"
          echo "Modified files: $modified_files_escaped"
          echo "Deleted files: $deleted_files_escaped"

          # Set the outputs
          echo "new_files=$new_files_escaped" >> $GITHUB_OUTPUT
          echo "modified_files=$modified_files_escaped" >> $GITHUB_OUTPUT
          echo "deleted_files=$deleted_files_escaped" >> $GITHUB_OUTPUT

      # Step 3: Run custom script with file lists as arguments
      - name: Collect post data and run script
        env:
          BLOG_POSTS_DEPLOY_TO_ALGOLIA_ENDPOINT_PRODUCTION: ${{ secrets.BLOG_POSTS_DEPLOY_TO_ALGOLIA_ENDPOINT_PRODUCTION }} # Production endpoint
          BLOG_POSTS_DEPLOY_TO_ALGOLIA_ENDPOINT_DEVELOP: ${{ secrets.BLOG_POSTS_DEPLOY_TO_ALGOLIA_ENDPOINT_DEVELOP }} # Develop endpoint
        run: |
          # Ensure 'gray-matter', 'axios' and 'dotenv' are installed for front-matter parsing
          npm install gray-matter axios dotenv

          # Run the custom script, passing the list of files and extracting their metadata
          node ./send-blogs-to-deploy-endpoint.js "${{ steps.changes.outputs.new_files }}" "${{ steps.changes.outputs.modified_files }}" "${{ steps.changes.outputs.deleted_files }}"