bump-tree-sitter.yml

name: Automatic tree-sitter version bump

on:
  schedule:
    - cron: "23 1 * * *"

jobs:
  check_release:
    name: Check latest release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repo
        uses: actions/checkout@v4

      - name: Get the previous release tag from local project
        id: previous_release
        run: |
          PREVIOUS_RELEASE=$(ruby -r ./lib/tree_sitter/version.rb -e 'puts TreeSitter::TREESITTER_VERSION')
          echo "version=$PREVIOUS_RELEASE" >> "$GITHUB_OUTPUT"

      - name: Get the latest release tag from the external repo
        id: latest_release
        run: |
          LATEST_RELEASE=$(curl -s https://api.github.com/repos/tree-sitter/tree-sitter/releases/latest | jq -r .tag_name | sed 's/^v//')
          echo "version=$LATEST_RELEASE" >> "$GITHUB_OUTPUT"
          echo "branch=tree-sitter-bump-to-$LATEST_RELEASE" >> "$GITHUB_OUTPUT"

      - name: Check if branch exists
        id: latest_release_branch
        run: |
          git pull
          if git show-ref --verify --quiet refs/heads/${{ steps.latest_release.outputs.branch }}; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Compare release versions
        id: check_versions
        run: |
          if [ "${{ steps.previous_release.outputs.version }}" != "${{ steps.latest_release.outputs.version }}" ] \
             && [ "${{ steps.latest_release_branch.outputs.exists }}" != 'false' ]
          then
            echo "New release found"
            echo "changed=true" >> "$GITHUB_OUTPUT"
          else
            echo "No new release"
            echo "changed=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Update version if changed
        if: steps.check_versions.outputs.changed == 'true'
        run: |
          sed -i "s/^\([[:space:]]*\)TREESITTER_VERSION = '.*'/\1TREESITTER_VERSION = '${{ steps.latest_release.outputs.version }}'/"  lib/tree_sitter/version.rb
          sed -i -E "s/(tree-sitter-version = \").*\"/\1${{ steps.latest_release.outputs.version }}\"/" parsers.toml

      - name: Create pull request
        if: steps.check_versions.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v7
        with:
          author: ${{ github.actor }} <${{ github.actor_id }}+${{ github.actor }}@users.noreply.github.com>
          base: ${{ github.event.repository.default_branch }}
          branch: ${{ steps.latest_release.outputs.branch }}
          commit-message: "tree-sitter: bump to ${{ steps.latest_release.outputs.version }}"
          committer: github-actions[bot] <github-actions[bot]@github.com>
          delete-branch: true
          draft: always-true
          signoff: false
          title: "Bump tree-sitter to ${{ steps.latest_release.outputs.version }}"
          token: ${{ secrets.GITHUB_TOKEN }}