update-requirements.yml

name: update-requirements

on:
  schedule:
    - cron: "0 2 1 * *"  # First day of every month at 2am.
  push:
    branches:
      - main
    paths:
      - '.github/workflows/update-requirements.yml'
      - 'examples/requirements.in'
      - 'setup.py'
  pull_request:
    branches:
      - main
    paths:
      - '.github/workflows/update-requirements.yml'
      - 'examples/requirements.in'
      - 'setup.py'
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true

permissions: read-all

jobs:
  update-requirements:
    name: Test examples
    runs-on: ubuntu-latest
    timeout-minutes: 90
    permissions:
        contents: write
        pull-requests: write
    steps:
      - name: Checkout Melting Pot
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683

      - name: Install Melting Pot
        uses: ./.github/actions/install

      - name: Compile requirements.txt
        run: pip-compile --generate-hashes --strip-extras --output-file=requirements.txt --extra=dev setup.py examples/requirements.in

      - name: Check for changes
        id: check_changes
        run: |
          if git diff --quiet; then
            echo "changed=false" >> $GITHUB_OUTPUT
          else
            echo "changed=true" >> $GITHUB_OUTPUT
          fi

      - name: Create pull request
        if: steps.check_changes.outputs.changed == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          BRANCH_NAME="update-requirements-$(date +%Y%m%d%H%M%S)"
          git checkout -b "${BRANCH_NAME}"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git config --global user.name "GitHub Actions Bot"
          git add requirements.txt
          git commit -m "Update requirements.txt"
          git push origin "$BRANCH_NAME"
          gh pr create \
              --base "${GITHUB_BASE_REF:-main}" \
              --head "$BRANCH_NAME" \
              --title "Update requirements.txt" \
              --body 'Automatically generated by GitHub Action.'