name: Duplicate PRs After Merge

on:
  workflow_dispatch:
    inputs:
      landed_pr:
        description: "Merged PR number that supersedes the duplicates"
        required: true
        type: string
      duplicate_prs:
        description: "Comma or whitespace separated duplicate PR numbers to close"
        required: true
        type: string
      apply:
        description: "When true, label/comment/close; otherwise dry-run only"
        required: true
        type: boolean
        default: false

permissions:
  contents: read
  issues: write
  pull-requests: write

concurrency:
  group: duplicate-after-merge-${{ github.event.inputs.landed_pr }}
  cancel-in-progress: false

env:
  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
  GH_TOKEN: ${{ github.token }}

jobs:
  close-duplicates:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
      - name: Close confirmed duplicates
        env:
          APPLY: ${{ inputs.apply }}
          DUPLICATE_PRS: ${{ inputs.duplicate_prs }}
          LANDED_PR: ${{ inputs.landed_pr }}
          REPO: ${{ github.repository }}
        run: |
          set -euo pipefail

          args=(
            --repo "$REPO"
            --landed-pr "$LANDED_PR"
            --duplicates "$DUPLICATE_PRS"
          )

          if [[ "$APPLY" == "true" ]]; then
            args+=(--apply)
          fi

          node scripts/close-duplicate-prs-after-merge.mjs "${args[@]}"