Simplify PR actions

.github/workflows/build-pull-request.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   build-pull-request:
+    name: 'Build pull request'
     runs-on: ubuntu-latest
     env:
       PR_NUMBER: ${{github.event.number}}
@@ -16,23 +17,22 @@ jobs:
         uses: actions/setup-node@v3.4.1
         with:
           node-version: 17.9.0
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm ci
       - name: Build app
-        run: npm ci && npm run build
+        run: npm run build
       - name: Upload artifact
         uses: actions/upload-artifact@v3.1.0
         with:
-          name: previewbuild
+          name: preview
           path: dist
           retention-days: 1
-      - name: Get PR info
-        uses: actions/github-script@v6.2.0
-        with:
-          script: |
-            var fs = require('fs');
-            fs.writeFileSync('${{github.workspace}}/pr.json', JSON.stringify(context.payload.pull_request));
-      - name: Upload PR Info
+      - name: Save pr number
+        run: echo ${PR_NUMBER} > ./pr.txt
+      - name: Upload pr number
         uses: actions/upload-artifact@v3.1.0
         with:
-          name: pr.json
-          path: pr.json
+          name: pr
+          path: ./pr.txt
           retention-days: 1

.github/workflows/deploy-pull-request.yml

@@ -1,68 +1,40 @@
-name: Upload Preview Build to Netlify
+name: Deploy PR to Netlify
 on:
   workflow_run:
       workflows: ["Build pull request"]
-      types:
-        - completed
+      types: [completed]
 jobs:
-  get-build-and-deploy:
+  deploy-pull-request:
+    name: 'Deploy pull request'
+    runs-on: ubuntu-latest
     permissions:
       contents: read
       pull-requests: write
-    runs-on: ubuntu-latest
-    if: >
-      ${{ github.event.workflow_run.conclusion == 'success' }}
+    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 pr number
+        uses: dawidd6/action-download-artifact@7847792dd435a50521b8e3bd3576dae7459d1fa8
+        with:
+          workflow: ${{ github.event.workflow.id }}
+          run_id: ${{ github.event.workflow_run.id }}
+          name: pr
+      - name: Output pr number
+        id: pr
+        run: echo "::set-output name=id::$(<pr.txt)"
       - name: Download artifact
-        uses: actions/github-script@v6.2.0
+        uses: dawidd6/action-download-artifact@7847792dd435a50521b8e3bd3576dae7459d1fa8
         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}`);
+          workflow: ${{ github.event.workflow.id }}
+          run_id: ${{ github.event.workflow_run.id }}
+          name: preview
+          path: dist
       - name: Deploy to Netlify
         id: netlify
         uses: nwtgck/actions-netlify@b7c1504e00c6b8a249d1848cc1b522a4865eed99
         with:
           publish-dir: dist
-          deploy-message: "Deploy from GitHub Actions"
+          deploy-message: "Deploy PR ${{ steps.pr.outputs.id }}"
+          alias: ${{ steps.pr.outputs.id }}
           # These don't work because we're in workflow_run
           enable-pull-request-comment: false
           enable-commit-comment: false
@@ -75,7 +47,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          pull-request-number: ${{ steps.readctx.outputs.prnumber }}
+          pull-request-number: ${{ steps.pr.outputs.id }}
           description-message: |
               Preview: ${{ steps.netlify.outputs.deploy-url }}
               ⚠️ Exercise caution. Use test accounts. ⚠️