Fixed pull request preview deploys (#166)

* Update and rename pull-request.yml to build-pull-request.yml

* Create deploy-pull-request.yml

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

@@ -0,0 +1,32 @@
+name: 'Build PR'
+
+on:
+  pull_request:
+    types: ['opened', 'synchronize']
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        env:
+          PR_NUMBER: ${{github.event.number}}
+        steps:
+            - uses: actions/checkout@v2
+            - name: Build
+              run: npm install && npm run build
+            - name: Upload Artifact
+              uses: actions/upload-artifact@v2
+              with:
+                  name: previewbuild
+                  path: dist
+                  retention-days: 1
+            - uses: actions/github-script@v3.1.0
+              with:
+                script: |
+                    var fs = require('fs');
+                    fs.writeFileSync('${{github.workspace}}/pr.json', JSON.stringify(context.payload.pull_request));
+            - name: Upload PR Info
+              uses: actions/upload-artifact@v2
+              with:
+                  name: pr.json
+                  path: pr.json
+                  retention-days: 1

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

@@ -0,0 +1,78 @@
+name: Upload Preview Build to Netlify
+on:
+    workflow_run:
+        workflows: ["Build PR"]
+        types:
+            - completed
+jobs:
+    build:
+        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@v3.1.0
+              with:
+                script: |
+                  var artifacts = await github.actions.listWorkflowRunArtifacts({
+                     owner: context.repo.owner,
+                     repo: context.repo.repo,
+                     run_id: ${{github.event.workflow_run.id }},
+                  });
+                  var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
+                    return artifact.name == "previewbuild"
+                  })[0];
+                  var download = await github.actions.downloadArtifact({
+                     owner: context.repo.owner,
+                     repo: context.repo.repo,
+                     artifact_id: matchArtifact.id,
+                     archive_format: 'zip',
+                  });
+                  var fs = require('fs');
+                  fs.writeFileSync('${{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.actions.downloadArtifact({
+                     owner: context.repo.owner,
+                     repo: context.repo.repo,
+                     artifact_id: prInfoArtifact.id,
+                     archive_format: 'zip',
+                  });
+                  var fs = require('fs');
+                  fs.writeFileSync('${{github.workspace}}/pr.json.zip', Buffer.from(download.data));
+            - name: Extract Artifacts
+              run: unzip -d dist previewbuild.zip && rm previewbuild.zip && unzip pr.json.zip && rm pr.json.zip
+            - name: 'Read PR Info'
+              id: readctx
+              uses: actions/github-script@v3.1.0
+              with:
+                script: |
+                    var fs = require('fs');
+                    var pr = JSON.parse(fs.readFileSync('${{github.workspace}}/pr.json'));
+                    console.log(`::set-output name=prnumber::${pr.number}`);
+            - name: Deploy to Netlify
+              id: netlify
+              uses: nwtgck/actions-netlify@v1.2
+              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: velas/pr-description@v1.0.1
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              with:
+                  pull-request-number: ${{ steps.readctx.outputs.prnumber }}
+                  description-message: |
+                      Preview: ${{ steps.netlify.outputs.deploy-url }}
+                      ⚠️ Do you trust the author of this PR? Maybe this build will steal your keys or give you malware. Exercise caution. Use test accounts.

.github/workflows/pull-request.yml

@@ -1,30 +0,0 @@
-name: 'Netlify Preview Deploy'
-
-on:
-  pull_request_target:
-    types: ['opened', 'synchronize']
-
-jobs:
-  deploy:
-    name: "Deploy to Netlify"
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v1      
-      - uses: jsmrcaga/action-netlify-deploy@master
-        with:          
-          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
-          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE3_ID }}
-          BUILD_DIRECTORY: "dist"
-      - name: Post on PR
-        uses: nwtgck/actions-netlify@v1.1
-        with:
-          publish-dir: "dist"
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          deploy-message: "Deploy from GitHub Actions"
-          enable-pull-request-comment: true
-          enable-commit-comment: false
-          overwrites-pull-request-comment: true
-        env:
-          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
-          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE3_ID }}