pr-validation.yml

name: "pr-validation"

on:
  pull_request:
    types: [opened, reopened, edited, synchronize]

jobs:
  validate:
    name: Validate
    runs-on: ubuntu-latest
    steps:
    - name: Validate PR title
      id: validation
      env:
        REGEX: '^(fix|feat|chore)(!)?:\ .+'
      run: |
        PR_TITLE=$(jq -r .pull_request.title "$GITHUB_EVENT_PATH")
        REGEX=$REGEX
        DEPENDABOT_REGEX="^Bump\\s.+"
        if [[ ! "$PR_TITLE" =~ $REGEX && ! "$PR_TITLE" =~ $DEPENDABOT_REGEX ]]; then
                echo "Invalid PR title"
                echo "PR_STATUS=false" >> $GITHUB_OUTPUT
        else
                echo "Valid PR title"
                echo "PR_STATUS=true" >> $GITHUB_OUTPUT
        fi
    - name: Update Status and Comment on PR
      uses: actions/github-script@v6
      env:
        REGEX: '^(fix|feat|chore)(!)?:\ .+'
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        script: |
          const regex = process.env.REGEX;
          const state = ${{ steps.validation.outputs.PR_STATUS }} ? "success" : "failure";
          const description = ${{ steps.validation.outputs.PR_STATUS }} ? "PR title is valid." : `PR title is invalid. Ensure it matches the pattern: ${regex}`;
          const prNumber = context.payload.pull_request.number;
          const commitSha = context.payload.pull_request.head.sha;

          const contextName = process.env.GITHUB_JOB;
    
          // Create a status check
          await github.rest.repos.createCommitStatus({
            owner: context.repo.owner,
            repo: context.repo.repo,
            sha: commitSha,
            state: state,
            context: contextName,
            description: description
          });