draft-pr-converter.yml

name: "Convert stale PR's to drafts"

on:
  schedule:
    - cron:  '0 */1 * * *' # At minute 0 past every hour.
  workflow_dispatch:

env:
  DRAFT_PROTECT_LABEL: "draft-protect"

jobs:
  convert_stale_prs:
    runs-on: ubuntu-latest
    timeout-minutes: 2
    steps:
      - uses: hmarr/debug-action@v3.0.0

      - id: get_timestamp
        name: Get timestamp
        shell: bash
        run: echo "ts=$(date -d '10 hours ago' +"%Y-%m-%dT%H:%M:%S")" >> $GITHUB_OUTPUT

      - uses: octokit/graphql-action@v2.3.2
        name: Get PR older than 10 hours
        id: get_stale_prs
        env:
          GITHUB_TOKEN: ${{ secrets.GIT_PAT }}
        with:
          query: |
            {
              search(query: "repo:${{ github.repository }} is:pr is:open draft:false -label:${{ env.DRAFT_PROTECT_LABEL }} updated:<=${{ steps.get_timestamp.outputs.ts }}", type: ISSUE, first: 100) {
                issueCount
                edges {
                  node {
                    ... on PullRequest {
                      number
                      url
                      id
                      updatedAt
                    }
                  }
                }
              }
            }

      - name: Stale PRs data
        run: "echo '${{ steps.get_stale_prs.outputs.data }}'"

      - name: Convert to draft
        id: mutation_step
        shell: bash
        env:
          GIT_PAT: ${{ secrets.GIT_PAT }}
        run: |
          set -eux
          echo '${{ steps.get_stale_prs.outputs.data }}' > /tmp/stale_pr.json
          _pr_list=$(jq -r '.search.edges | map(.node.url) | join("\\n")' < /tmp/stale_pr.json)
          if [ -n "$_pr_list" ]; then
            echo "pr_list=$_pr_list" >> $GITHUB_OUTPUT
            echo "exec=true" >> $GITHUB_OUTPUT
            echo "$GIT_PAT" | gh auth login --with-token
            for pr_id in $(jq -r '.search.edges[].node.id' < /tmp/stale_pr.json); do
              gh api graphql -F id="${pr_id}" -f query='
                mutation($id: ID!) {
                  convertPullRequestToDraft(input: { pullRequestId: $id }) {
                    pullRequest {
                      id
                      number
                      isDraft
                    }
                  }
                }
              '
            done
          fi

      - name: Post to a Slack channel
        id: slack
        if: ${{ steps.mutation_step.outputs.exec == 'true' }}
        uses: slackapi/slack-github-action@v1.27
        with:
          channel-id: 'C02LMULF4NA'
          payload: '{ "type": "mrkdwn", "text": "${{ env.SLACK_MESSAGE }}" }'
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_LSE_BOT_TOKEN }}
          SLACK_MESSAGE: >-
            *Drafted PR's*\n
            ${{ steps.mutation_step.outputs.pr_list }}