up_ex_doc_version.yml

---
name: up_ex_doc_version
on:
  schedule:
    - cron: '0 0 * * *'  # Run daily at midnight
  workflow_dispatch:
  

jobs:
  test:
    name: Update ex_doc version
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: erlef/setup-beam@v1
        with:
          otp-version: 24
          elixir-version: 1.13
      - run: |
            CURR=$(curl -s https://hex.pm/api/packages/ex_doc | jq -r '.latest_stable_version')
            TITLE="[automation] Update \`ex_doc\` to ${CURR}"
            PR=$(curl -s https://api.github.com/repos/${GITHUB_REPOSITORY}/pulls?state=all%26per_page=100 | jq ".[] | select(.title==\"${TITLE}\")")

            echo "Searching for pull request with title ${TITLE}..."
            
            if [ -z "${PR}" ]
            then
              git config user.name "GitHub Actions"
              git config user.email "actions@user.noreply.github.com"
              echo "  ... not found in 100 most recent pull requests!"
              
              git fetch origin
              
              BRANCH="up_ex_doc_to_${CURR}"

              if git branch -a | grep "$BRANCH" > /dev/null; then
                  echo "Branch $BRANCH found! Bailing out..."
                  exit
              fi

              git checkout -b "$BRANCH"
              mix deps.get
              mix compile
              mix up_ex_doc_version "${CURR}"
              mix deps.unlock ex_doc
              mix deps.get

              if ! git diff --exit-code 1> /dev/null ; then
                  echo "There's stuff to push. Creating a pull request..."
                  git add .
                  git commit -m "${TITLE}"
                  git push origin "$BRANCH"

                  gh pr create --fill \
                      --title "${TITLE}" \
                      --body "This is an automated action to update \`ex_doc\` to version ${CURR}"
              else
                  echo "Nothing to push. Is \`ex_doc\` already at version ${CURR}?"
              fi
            else
              echo "  ... found! Bailing out..."
            fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}