name: Upload Preview Build to Netlify
on:
  workflow_run:
      workflows: ["Build pull request"]
      types:
        - completed
jobs:
  get-build-and-deploy:
    permissions:
      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    if: >
      ${{ github.event.workflow_run.conclusion == 'success' }}
    steps:
      # There's a 'download artifact' action but it hasn't been updated for the
      # workflow_run action (https://github.com/actions/download-artifact/issues/60)
      # so instead we get this mess:
      - name: Download artifact
        uses: actions/github-script@v6.2.0
        with:
          script: |
            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
              owner: context.repo.owner,
              repo: context.repo.repo,
              run_id: ${{github.event.workflow_run.id }},
            });
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "previewbuild"
            })[0];
            var download = await github.rest.actions.downloadArtifact({
              owner: context.repo.owner,
              repo: context.repo.repo,
              artifact_id: matchArtifact.id,
              archive_format: 'zip',
            });
            var fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/previewbuild.zip', Buffer.from(download.data));
            var prInfoArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "pr.json"
            })[0];
            var download = await github.rest.actions.downloadArtifact({
              owner: context.repo.owner,
              repo: context.repo.repo,
              artifact_id: prInfoArtifact.id,
              archive_format: 'zip',
            });
            var fs = require('fs');
            fs.writeFileSync('${{github.workspace}}/pr.json.zip', Buffer.from(download.data));
      - name: Extract Artifacts
        run: unzip -d dist previewbuild.zip && rm previewbuild.zip && unzip pr.json.zip && rm pr.json.zip
      - name: Read PR Info
        id: readctx
        uses: actions/github-script@v6.2.0
        with:
          script: |
            var fs = require('fs');
            var pr = JSON.parse(fs.readFileSync('${{github.workspace}}/pr.json'));
            console.log(`::set-output name=prnumber::${pr.number}`);
      - name: Deploy to Netlify
        id: netlify
        uses: nwtgck/actions-netlify@b7c1504e00c6b8a249d1848cc1b522a4865eed99
        with:
          publish-dir: dist
          deploy-message: "Deploy from GitHub Actions"
          # These don't work because we're in workflow_run
          enable-pull-request-comment: false
          enable-commit-comment: false
        env:
          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE3_ID }}
        timeout-minutes: 1
      - name: Edit PR Description
        uses: Beakyn/gha-comment-pull-request@2167a7aee24f9e61ce76a23039f322e49a990409
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          pull-request-number: ${{ steps.readctx.outputs.prnumber }}
          description-message: |
              Preview: ${{ steps.netlify.outputs.deploy-url }}
              ⚠️ Exercise caution. Use test accounts. ⚠️