Create pr-preview.yml for Playground previews on PRs

.github/workflows/pr-preview.yml

@@ -0,0 +1,103 @@
+name: PR Preview
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, edited]
+
+permissions:
+    contents: write
+    pull-requests: write
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+            - name: Setup Node
+              uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
+              with:
+                  cache: 'npm'
+                  node-version-file: .nvmrc
+
+            - name: Setup PHP
+              uses: shivammathur/setup-php@9e72090525849c5e82e596468b86eb55e9cc5401 # v2.32.0
+              with:
+                  php-version: '7.4'
+                  tools: composer:v2
+
+            - name: Get composer cache directory
+              id: composer-cache
+              run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+            - name: Cache composer
+              uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
+              with:
+                  path: ${{ steps.composer-cache.outputs.dir }}
+                  key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+
+            - name: Install composer dependencies
+              run: composer install --no-dev -o
+
+            - name: Install node dependencies
+              run: npm ci --no-optional
+
+            - name: Build
+              run: |
+                  npm run build
+                  npm run archive
+                  mv classifai.zip plugin.zip
+            - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+              with:
+                  name: built-plugin
+                  path: plugin.zip
+
+    expose-build:
+        needs: build
+        runs-on: ubuntu-latest
+        permissions:
+            contents: write
+        outputs:
+            artifact-url: ${{ steps.expose.outputs.artifact-url }}
+        steps:
+            - name: Expose built artifact
+              id: expose
+              uses: WordPress/action-wp-playground-pr-preview@c8607529dac8d2bf9a1e8493865fc97cd1c3c87b # v2
+              with:
+                  artifact-name: 'built-plugin'
+                  pr-number: ${{ github.event.pull_request.number }}
+                  commit-sha: ${{ github.sha }}
+                  artifacts-to-keep: '2'
+
+    create-blueprint:
+        needs: expose-build
+        runs-on: ubuntu-latest
+        outputs:
+            blueprint: ${{ steps.blueprint.outputs.result }}
+        steps:
+            - uses: actions/github-script@ved597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+              id: blueprint
+              with:
+                  script: |
+                      const blueprint = {
+                        steps: [{
+                          step: "installPlugin",
+                          pluginZipFile: {
+                            resource: "url",
+                            url: "${{ needs.expose-build.outputs.artifact-url }}"
+                          }
+                        }]
+                      };
+                      return JSON.stringify(blueprint);
+                  result-encoding: string
+
+    preview:
+        needs: create-blueprint
+        runs-on: ubuntu-latest
+        permissions:
+            pull-requests: write
+        steps:
+            - uses: WordPress/action-wp-playground-pr-preview@c8607529dac8d2bf9a1e8493865fc97cd1c3c87b # v2
+              with:
+                  github-token: ${{ secrets.GITHUB_TOKEN }}
+                  blueprint: ${{ needs.create-blueprint.outputs.blueprint }}