From 4372b797614ba5889093b86f7ff5563baf35b3b9 Mon Sep 17 00:00:00 2001
From: Andrew Savage <andrewsavage@google.com>
Date: Thu, 15 Jun 2023 18:30:01 +0000
Subject: [PATCH 1/3] Auto-assign outisde PRs to partner-eng

---
 .github/workflows/auto_assign.yaml | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 .github/workflows/auto_assign.yaml

diff --git a/.github/workflows/auto_assign.yaml b/.github/workflows/auto_assign.yaml
new file mode 100644
index 000000000000..c3059dd2e5e6
--- /dev/null
+++ b/.github/workflows/auto_assign.yaml
@@ -0,0 +1,36 @@
+name: PR Reviewer Auto Assignment
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - reopened
+
+concurrency:
+  group: '${{ github.workflow }}-${{ github.event_name }} @ ${{ github.event.pull_request.number || github.sha }}'
+  cancel-in-progress: true
+
+jobs:
+  assign-reviewer:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+    - name: Check if PR author is outside collaborator and assign reviewer
+      env:
+        PR_AUTHOR_LOGIN: ${{ github.event.pull_request.user.login }}
+        REPO_NAME: ${{ github.event.repository.full_name }}
+        PR_NUMBER: ${{ github.event.number }}
+      run: |
+        PERMISSION_LEVEL=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+          "https://api.github.com/repos/$REPO_NAME/collaborators/$PR_AUTHOR_LOGIN/permission" | jq -r .permission)
+
+        if [ "$PERMISSION_LEVEL" == "none" ] || [ "$PERMISSION_LEVEL" == "read" ]; then
+          echo "PR author is an outside collaborator. Assigning reviewer..."
+
+          REVIEWERS_JSON='{"reviewers": ["youtube/cobalt-partner-eng"]}'
+          curl -s -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+            -H "Accept: application/vnd.github.v3+json" \
+            -d "$REVIEWERS_JSON" \
+            "https://api.github.com/repos/$REPO_NAME/pulls/$PR_NUMBER/requested_reviewers"
+        fi

From ca6283e6a698f26eb312f4de05afc8b0bdca7a2f Mon Sep 17 00:00:00 2001
From: Andrew Savage <andrewsavage@google.com>
Date: Fri, 16 Jun 2023 15:41:52 +0000
Subject: [PATCH 2/3] Use more granular role_name attribute

---
 .github/workflows/auto_assign.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/auto_assign.yaml b/.github/workflows/auto_assign.yaml
index c3059dd2e5e6..188e7f3e2247 100644
--- a/.github/workflows/auto_assign.yaml
+++ b/.github/workflows/auto_assign.yaml
@@ -23,7 +23,7 @@ jobs:
         PR_NUMBER: ${{ github.event.number }}
       run: |
         PERMISSION_LEVEL=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
-          "https://api.github.com/repos/$REPO_NAME/collaborators/$PR_AUTHOR_LOGIN/permission" | jq -r .permission)
+          "https://api.github.com/repos/$REPO_NAME/collaborators/$PR_AUTHOR_LOGIN/permission" | jq -r .role_name)
 
         if [ "$PERMISSION_LEVEL" == "none" ] || [ "$PERMISSION_LEVEL" == "read" ]; then
           echo "PR author is an outside collaborator. Assigning reviewer..."

From 23b80db4f702edb38e0373267bcb51bb9fdd6777 Mon Sep 17 00:00:00 2001
From: Andrew Savage <andrewsavage@google.com>
Date: Wed, 28 Jun 2023 13:38:50 +0000
Subject: [PATCH 3/3] Apply label instead of assigning reviewer to PR

---
 .github/workflows/auto_assign.yaml | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/auto_assign.yaml b/.github/workflows/auto_assign.yaml
index 188e7f3e2247..3a471698f437 100644
--- a/.github/workflows/auto_assign.yaml
+++ b/.github/workflows/auto_assign.yaml
@@ -26,11 +26,10 @@ jobs:
           "https://api.github.com/repos/$REPO_NAME/collaborators/$PR_AUTHOR_LOGIN/permission" | jq -r .role_name)
 
         if [ "$PERMISSION_LEVEL" == "none" ] || [ "$PERMISSION_LEVEL" == "read" ]; then
-          echo "PR author is an outside collaborator. Assigning reviewer..."
+          echo "PR author is an outside collaborator. Adding label..."
 
-          REVIEWERS_JSON='{"reviewers": ["youtube/cobalt-partner-eng"]}'
           curl -s -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
             -H "Accept: application/vnd.github.v3+json" \
-            -d "$REVIEWERS_JSON" \
-            "https://api.github.com/repos/$REPO_NAME/pulls/$PR_NUMBER/requested_reviewers"
+            -d '["outside collaborator"]' \
+            "https://api.github.com/repos/$REPO_NAME/issues/$PR_NUMBER/labels"
         fi