Only automerge PR if generated code updated

Author: razor-x

.github/dependabot.yml

@@ -1,20 +1,24 @@
+---
 version: 2
 updates:
-  - package-ecosystem: 'npm'
+  - package-ecosystem: npm
     directory: '/'
     schedule:
-      interval: 'daily'
-    target-branch: 'main'
-    versioning-strategy: 'auto'
+      interval: daily
+    commit-message:
+      prefix: feat
+      include: scope
     allow:
-      - dependency-name: '@seamapi/*'
-        dependency-type: 'development'
+      - dependency-type: development
     ignore:
-      - dependency-name: '@seamapi/*'
-        update-types: ['version-update:semver-major']
+      - dependency-name: '*'
+        update-types:
+          - 'version-update:semver-major'
     groups:
       seam:
         dependency-type: development
+        patterns:
+          - '@seamapi/*'
         update-types:
           - patch
           - minor

.github/workflows/automerge.yml

@@ -7,11 +7,36 @@ on:
       - main
 
 jobs:
-  merge:
-    name: Merge #${{ number }}
+  changes:
+    name: Get changes
     runs-on: ubuntu-latest
     timeout-minutes: 30
     if: github.actor == 'dependabot[bot]'
+    permissions:
+      checks: read
+    outputs:
+      has_changes: ${{ steps.changed.outputs.any_changed == 'true' }}
+      is_generation_successful: ${{ steps.checks.outputs.conclusion == 'success' }}
+    steps:
+      - name: Wait for checks
+        uses: fountainhead/action-wait-for-check@v1.2.0
+        id: checks
+        with:
+          checkName: Generate code
+          ref: ${{ github.event.pull_request.head.sha }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Get changed generated files
+        id: changed
+        uses: tj-actions/changed-files@v44
+        with:
+          files: |
+            seam/**
+  merge:
+    name: Merge
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    needs: changes
+    if: needs.changes.outputs.has_changes == 'true'
     steps:
       - name: Approve pull request
         run: gh pr review --approve "$PR_URL"
@@ -23,3 +48,15 @@ jobs:
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}
           GH_TOKEN: ${{ secrets.GH_TOKEN }}
+  close:
+    name: Close
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    needs: changes
+    if: needs.changes.outputs.has_changes == 'false' && needs.changes.outputs.is_generation_successful == 'true'
+    steps:
+      - name: Close pull request
+        run: gh pr close "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GH_TOKEN }}