mergify_train_ci.yml

name: Train: bump and regenerate

on:
  push:
    branches:
      - 'mergify/**'

permissions:
  contents: write
  pull-requests: read

concurrency:
  group: mergify-train-${{ github.ref }}
  cancel-in-progress: false

jobs:
  train:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - name: Checkout
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
        with:
          fetch-depth: 0

      - name: Setup
        uses: ./.github/actions/setup
        with:
          create-kind-cluster: "false"
          helm-version: "v3.14.4"

      - name: Derive PR numbers from mergify branch name
        id: derive
        shell: bash
        run: |
          # Expected branch like: mergify/<queue>/pr-123 or mergify/<queue>/pr-123-456
          ref_name="${GITHUB_REF_NAME}"
          echo "Branch: ${ref_name}"
          if [[ "${ref_name}" =~ pr-([0-9][0-9\-]*) ]]; then
            seq="${BASH_REMATCH[1]}"
            prs="${seq//-/ }"
            echo "PR numbers: ${prs}"
            echo "numbers=${prs}" >> $GITHUB_OUTPUT
          else
            echo "Could not parse PR numbers from ${ref_name}. Proceeding without labels." >&2
            echo "numbers=" >> $GITHUB_OUTPUT
          fi

      - name: Fallback: derive PR numbers from commits
        if: steps.derive.outputs.numbers == ''
        id: derive2
        shell: bash
        run: |
          prs=$(git log --merges --pretty=format:'%s' | sed -nE 's/.*#([0-9]+).*/\1/p' | sort -u | tr '\n' ' ')
          echo "numbers=${prs}" >> $GITHUB_OUTPUT

      - name: Run bump then regenerate
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_REPOSITORY: ${{ github.repository }}
          PR_NUMBERS: ${{ steps.derive.outputs.numbers || steps.derive2.outputs.numbers }}
          BOT_NAME: github-actions[bot]
          BOT_EMAIL: github-actions[bot]@users.noreply.github.com
          BASE_REF: origin/main
        run: |
          bash .github/scripts/ci_bump_and_regen.sh

      - name: Push commit
        run: |
          git push

      - name: Record train commit SHA
        id: head
        run: |
          echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT

      - name: Comment train render link on PRs
        if: ${{ steps.derive.outputs.numbers != '' || steps.derive2.outputs.numbers != '' }}
        uses: actions/github-script@v7
        with:
          script: |
            const prs = (`${{ steps.derive.outputs.numbers || steps.derive2.outputs.numbers }}`).trim().split(/\s+/).filter(Boolean);
            const sha = `${{ steps.head.outputs.sha }}`;
            const commitUrl = `https://github.com/${context.repo.owner}/${context.repo.repo}/commit/${sha}`;
            const body = [
              `This PR is included in a Mergify train build.`,
              `\n- Train commit: ${commitUrl}`,
              `\n- Rendered example outputs were regenerated in this commit.`
            ].join('\n');
            for (const pr of prs) {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: Number(pr),
                body,
              });
            }