commit-message.yml

name: Commit Message

on:
  pull_request:
    types:
      - opened
      - edited
      - reopened
      - synchronize
      - ready_for_review

concurrency:
  group: commit-message-${{ github.event.pull_request.number }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  commit-message:
    name: Check commit messages and PR title
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0

      - name: Setup uv
        uses: astral-sh/setup-uv@v3
        with:
          version: latest
          enable-cache: "true"

      - name: Run commit-msg hooks on every commit and the PR title
        env:
          TITLE: ${{ github.event.pull_request.title }}
          BASE_REF: ${{ github.base_ref }}
        run: |
          msg_file="$RUNNER_TEMP/commit-msg.txt"

          while read -r sha; do
            git log -1 --format=%B "$sha" > "$msg_file"
            echo "Checking commit $(git log -1 --format='%h %s' "$sha")"
            uvx prek@0.2.30 run --hook-stage commit-msg --commit-msg-filename "$msg_file"
          done < <(git log --format=%H "origin/$BASE_REF..HEAD")

          printf '%s\n' "$TITLE" > "$msg_file"
          echo "Checking PR title: $TITLE"
          uvx prek@0.2.30 run --hook-stage commit-msg --commit-msg-filename "$msg_file"