PR-assignment.yml

name: Assign PR reviewers
on:
  workflow_run:
    workflows:
      - Compile dependencies.json for PR assignment checks
    types:
      - completed
jobs:
  assign_reviewers:
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    name: Assign reviewers
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          ref: master
      - name: Generate app token
        id: token
        uses: actions/create-github-app-token@v3
        with:
          app-id: ${{ vars.PR_BOT_ID }}
          private-key: ${{ secrets.PR_BOT_PEM }}
      - name: Download dependencies.json
        uses: ./.github/actions/unzip-artifact
        with:
          name: dependencies.json
      - name: Download PR info
        uses: ./.github/actions/unzip-artifact
        with:
          name: prInfo
      - name: Install s3 client
        run: |
          npm install @aws-sdk/client-s3
      - name: Get PR properties
        id: get-props
        uses: actions/github-script@v9
        env:
          AWS_ACCESS_KEY_ID: ${{ vars.PR_BOT_AWS_AK }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.PR_BOT_AWS_SAK }}
          DEPENDENCIES_JSON: ${{ runner.temp }}/artifacts/dependencies.json
        with:
          github-token: ${{ steps.token.outputs.token }}
          script: |
            const fs = require('fs');
            const getProps = require('./.github/workflows/scripts/getPRProperties.js')
            const { prNo }  = JSON.parse(fs.readFileSync('${{runner.temp}}/artifacts/prInfo.json').toString());
            const props = await getProps({
              github, 
              context, 
              prNo,
              reviewerTeam: '${{ vars.REVIEWER_TEAM }}',
              engTeam: '${{ vars.ENG_TEAM }}',
              authReviewTeam: '${{ vars.AUTH_REVIEWER_TEAM }}'
            });
            console.log('PR properties:', JSON.stringify(props, null, 2));
            return props;
      - name: Assign reviewers
        if: ${{ !fromJSON(steps.get-props.outputs.result).review.ok }}
        uses: actions/github-script@v9
        with:
          github-token: ${{ steps.token.outputs.token }}
          script: |
            const assignReviewers = require('./.github/workflows/scripts/assignReviewers.js')
            const reviewers = await assignReviewers({github, context, prData: ${{ steps.get-props.outputs.result }} });
            console.log('Assigned reviewers:', JSON.stringify(reviewers, null, 2));
      - name: Auto-label core PR
        if: ${{ fromJSON(steps.get-props.outputs.result).isCoreChange }}
        uses: actions/github-script@v8
        with:
          github-token: ${{ steps.token.outputs.token }}
          script: |
            const ghRequester = require('.github/workflows/scripts/ghRequest.js');
            const request = ghRequester(github);
            const prData = ${{ steps.get-props.outputs.result }};
            await request('POST /repos/{owner}/{repo}/issues/{issue_number}/labels', {
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prData.pr,
              labels: ['core'],
            });