feat: remove preview label on pr close (#16249)

.github/workflows/preview-comment.yaml

@@ -1,17 +0,0 @@
-name: Preview comment
-
-on:
-  pull_request:
-    types: [labeled]
-
-jobs:
-  comment-status:
-    runs-on: ubuntu-latest
-    if: ${{ github.event.label.name == 'preview' }}
-    permissions:
-      pull-requests: write
-    steps:
-      - uses: mshick/add-pr-comment@v2
-        with:
-          message-id: "preview-status"
-          message: "Deploying preview environment to https://pr-${{ github.event.pull_request.number }}.preview.internal.immich.cloud/"

.github/workflows/preview-label.yaml

@@ -0,0 +1,33 @@
+name: Preview label
+
+on:
+  pull_request:
+    types: [labeled]
+
+jobs:
+  comment-status:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.action == 'labeled' && github.event.label.name == 'preview' }}
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: mshick/add-pr-comment@v2
+        with:
+          message-id: "preview-status"
+          message: "Deploying preview environment to https://pr-${{ github.event.pull_request.number }}.preview.internal.immich.cloud/"
+
+  remove-label:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.action == 'closed' && contains(github.event.pull_request.labels.*.name, 'preview') }}
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            github.rest.issues.removeLabel({
+              issue_number: context.payload.pull_request.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              name: 'preview'
+            })