pr_validation.yaml

---
name: PR evaluation

on:
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review, edited]
    branches: ['main']

jobs:
  detect-unresolved-conflicts:
    name: Detect unresolved merge conflicts
    runs-on: ubuntu-latest
    needs: semantic-pr
    steps:
      - uses: actions/checkout@v3
      - name: List files with merge conflict markers
        run: git --no-pager grep "<<<<<<<" ":(exclude).github/" || true
      - name: Fail or succeed job if any files with merge conflict markers
        run: exit $(git grep "<<<<<<<" ":(exclude).github/" | wc --lines)

  pre-commit:
    name: Pre-commit checks
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4

      - name: Set up environment
        uses: ./.github/actions/setup/poetry
        with:
          os: ${{ job.os }}
          python-version: '3.11'
          poetry-install-options: "--only=misc --no-root"
          poetry-export-options: "--only=misc"

      - name: Install pre-commit
        run: pip install pre-commit

      - name: Run pre-commit
        uses: pre-commit/action@v3.0.0
        with:
          config: ../../.pre-commit-config.yaml

  semantic-pr:
    name: Semantic PR title
    runs-on: ubuntu-latest
    if: ${{ github.event.action != 'edited' ||
            github.event.changes.title != null }}
    steps:
      - name: Check if the PR title is semantic
        uses: amannn/action-semantic-pull-request@v5
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          types: |
            fix
            feat
            docs
            style
            refactor
            perf
            test
            build
            ci
            chore
            revert
          subjectPattern: ^(?![A-Z])(?=.{1,50}$).+$
          subjectPatternError: |
            The subject "{subject}" found in the pull request title "{title}"
            didn't match the configured pattern. Please ensure that the subject
            doesn't start with an uppercase character & not have more than 50
            characters.

      - name: Check length of PR title
        run: |
          PR_TITLE="${{ github.event.pull_request.title }}"
          if [ ${#PR_TITLE} -gt 50 ]; then
            echo "The PR title is too long. Please keep it under 50 characters."
            exit 1
          fi
...