hatchet/.github/workflows/gen-examples.yml

name: generate examples

on:
  push:
    branches: [ main ]

jobs:
  generate:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - uses: actions/setup-python@v5
      with:
        python-version: '3.13'
    - name: Generate snippets
      working-directory: frontend/snippets
      run: python3 generate.py

    - name: Check for changes in examples directory
      id: verify-changed-files
      run: |
        # Check if there are any changes
        if [ -n "$(git status --porcelain)" ]; then
          CHANGED_FILES=$(git status --porcelain | awk '{print $2}')
          NON_EXAMPLES_CHANGES=$(echo "$CHANGED_FILES" | grep -v "^examples/" || true)

          if [ -n "$NON_EXAMPLES_CHANGES" ]; then
            echo "Error: Changes detected outside of examples directory:"
            echo "$NON_EXAMPLES_CHANGES"
            echo "changed=false" >> $GITHUB_OUTPUT
            exit 1
          else
            echo "changed=true" >> $GITHUB_OUTPUT
          fi
        else
          echo "changed=false" >> $GITHUB_OUTPUT
        fi

    - name: Create branch and commit changes
      if: steps.verify-changed-files.outputs.changed == 'true'
      run: |
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        BRANCH_NAME="regenerate-examples-${{ github.sha }}"
        git checkout -b "$BRANCH_NAME"
        git add examples/
        git commit -m "chore: regenerate examples"
        git push origin "$BRANCH_NAME"
        echo "branch_name=$BRANCH_NAME" >> $GITHUB_OUTPUT
      id: create-branch

    - name: Close existing autogenerated-docs PRs
      if: steps.verify-changed-files.outputs.changed == 'true'
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        EXISTING_PRS=$(gh pr list --label "autogenerated-docs" --state open --json number --jq '.[].number')

        for pr in $EXISTING_PRS; do
          if [ -n "$pr" ]; then
            echo "Closing existing autogenerated-docs PR #$pr"
            gh pr close $pr --comment "Closing in favor of newer autogenerated-docs PR"
          fi
        done

    - name: Create Pull Request
      if: steps.verify-changed-files.outputs.changed == 'true'
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        gh pr create \
          --title "chore: regenerate examples" \
          --body "Automated regeneration of examples from the main branch." \
          --head "${{ steps.create-branch.outputs.branch_name }}" \
          --base main \
          --label "autogenerated-docs"
        echo "pr_number=$(gh pr list --head ${{ steps.create-branch.outputs.branch_name }} --json number --jq '.[0].number')" >> $GITHUB_OUTPUT
      id: create-pr

    - name: Request review from triggering author
      if: steps.verify-changed-files.outputs.changed == 'true'
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        AUTHOR="${{ github.actor }}"

        if [ "$AUTHOR" != "github-actions[bot]" ]; then
          gh pr edit "${{ steps.create-branch.outputs.branch_name }}" --add-reviewer "$AUTHOR" || {
            gh pr comment "${{ steps.create-branch.outputs.branch_name }}" --body "@$AUTHOR Please review this autogenerated PR"
          }
          echo "Requested review from $AUTHOR"
        else
          echo "Skipping review request as author is github-actions bot"
        fi