pr-check.yml

name: PR Checks

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

env:
  PR_URL: ${{github.event.pull_request.html_url}}

jobs:
  fix-pr-title:
    name: Fix PR Title
    runs-on: ubuntu-latest
    steps:
    - name: Check title format
      env:
        GITHUB_TOKEN: ${{secrets.SUPPLYCART_BOT_TOKEN}}
        PR_BRANCH: ${{ github.head_ref }}
      run: |
        echo "PR URL: $PR_URL"
        TITLE=$(gh pr view --json 'title' --jq '.title' "$PR_URL")
        echo "current title: $TITLE"

        if [[ $TITLE =~ ST-[0-9]{4}[[:space:]](FEAT|FIX)[[:space:]].* ]]; then
          echo "INFO: PR title already in correct format"
          exit 0
        elif [[ $TITLE =~ S[Tt][[:space:]-]([0-9]{4})[[:space:]/-](FEAT|Feat|feat|FIX|Fix|fix)[[:space:]/-](.*) ]]; then
          # match format "ST-1234 FIX message title"
          JIRA_TICKET=ST-${BASH_REMATCH[1]}
          OPS=${BASH_REMATCH[2]^^}
          REST=${BASH_REMATCH[3]}
          echo $JIRA_TICKET $OPS $REST
        elif [[ $TITLE =~ S[Tt][[:space:]-]([0-9]{4})[[:space:]/-](.*) ]]; then
          # match format "ST-1234 message title"
          JIRA_TICKET=ST-${BASH_REMATCH[1]}
          REST=${BASH_REMATCH[2]}

          # parse OPS from PR source branch
          if [[ $PR_BRANCH =~ [/-](FEAT|Feat|feat|FIX|Fix|fix)[/-] ]]; then
            OPS=${BASH_REMATCH[1]^^}
          fi

          echo $JIRA_TICKET $OPS $REST
        fi

        if [[ -n $JIRA_TICKET && -n $OPS && -n $REST ]]; then
          NEW_TITLE="$JIRA_TICKET $OPS $REST"
          echo "new title: $NEW_TITLE"
          gh pr edit --title="$NEW_TITLE" "$PR_URL"
          echo "SUCCESS: PR title fixed"
          exit 0
        else
          echo "ERROR: cannot automatically fix PR title"
          ERROR_MESSAGE='Sorry I cannot automatically fix the PR title 🙏. Please make sure its formatted like `ST-1234 <FEAT or FIX> <message>`. Thanks!'
          gh pr comment --body "$ERROR_MESSAGE" "$PR_URL"
        fi

    - name: Enable auto-merge
      run: gh pr merge --auto --squash "$PR_URL"
      env:
        GITHUB_TOKEN: ${{secrets.SUPPLYCART_BOT_TOKEN}}