Add edits check (#862)

.github/workflows/checks.yml

@@ -71,6 +71,20 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+  edits:
+    runs-on: ubuntu-latest
+    name: Check if PR is editable
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Install dependencies if needed
+        run: make init
+
+      - name: Run the check
+        run: python3 -m scripts.check.edits
+
+
   hassfest:
     runs-on: ubuntu-latest
     name: "Check hassfest"

scripts/check/edits.py

@@ -0,0 +1,15 @@
+import asyncio
+
+from scripts.helpers.event import get_event
+
+
+async def check():
+    event = get_event()
+    pull_request = event["pull_request"]
+    if not pull_request["maintainer_can_modify"]:
+        if pull_request["head"]["repo"]["full_name"] != "hacs/default":
+            exit("::error::The PR is not editable by HACS maintainers")
+
+
+if __name__ == "__main__":
+    asyncio.get_event_loop().run_until_complete(check())