prune_previews.yml

name: Prune Previews

on:
  push:
    paths:
      - '.github/workflows/prune_previews.yml'
  schedule:
    - cron: '05 2 * * *'

jobs:
  remove:
    name: Remove Stale Previews
    runs-on: ubuntu-latest
    steps:
      - name: Find PRs
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.CROSSBOW_DOCS_AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.CROSSBOW_DOCS_AWS_SECRET_ACCESS_KEY }}
          AWS_DEFAULT_REGION: ${{ secrets.CROSSBOW_DOCS_S3_BUCKET_REGION }}
          BUCKET: ${{ secrets.CROSSBOW_DOCS_S3_BUCKET }}
        run: |
          echo "PRs=$(aws s3 ls $BUCKET/pr_docs/ | sed 's/PRE//g' | tr -d '/' | tr '\n' ' ')" >> $GITHUB_ENV
      - name: Find open PRs
        uses: actions/github-script@v5
        id: find
        with:
          script: |
            let prs = "${{ env.PRs }}".split(" ").filter(x => x)
            async function not_open(id) {
            let pr;
             try {
                pr = await github.rest.pulls.get({
                "owner": "apache",
                "repo": "arrow",
                "pull_number": id
                })
              }
              catch(err) {
                //In case of error retrieving PR try to clean it.
                //Example manually triggered job with different naming.
                return(id)
              }
              if(pr.data.state !== "open") {
                return(id)
              }
              return("")
            }

            let del_prs = await Promise.all(prs.map(not_open))
            del_prs = del_prs.filter(x => x).join(" ")
            console.log(`::set-output name=del_prs::${del_prs}`)
      - name: Delete Dirs and Commit
        if: steps.find.outputs.del_prs != ''
        env:
          pr_ids: ${{ steps.find.outputs.del_prs }}
          AWS_ACCESS_KEY_ID: ${{ secrets.CROSSBOW_DOCS_AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.CROSSBOW_DOCS_AWS_SECRET_ACCESS_KEY }}
          AWS_DEFAULT_REGION: ${{ secrets.CROSSBOW_DOCS_S3_BUCKET_REGION }}
          BUCKET: ${{ secrets.CROSSBOW_DOCS_S3_BUCKET }}
        run: |      
          for id in ${pr_ids[@]}
          do
            aws s3 rm $BUCKET/pr_docs/$id --recursive
          done