Create AssignReviewer.yml

Author: LilithHafner

.github/workflows/AssignCommitter.yml

@@ -0,0 +1,47 @@
+name: Assign Committer
+on:
+  pull_request:
+    types: [opened, reopened, ready_for_review]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  assign-reviewer:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.pull_request.draft != true }}
+    steps:
+      - name: Add Assignee
+        uses: actions/github-script@v7
+        with:
+          script: |
+            if (context.payload.pull_request.assignees.length === 0) {
+              // Find suitable assignees
+              const { data: members } = await github.rest.teams.listMembersInOrg({ // TODO This needs read:org permission
+                org: "JuliaLang",
+                team_slug: "committers",
+                per_page: 100, // TODO: use pagination once we have more than 100 committers
+              });
+              const member_logins = members.map(member => member.login);
+
+              // Skip PRs authored by committers
+              const prAuthor = context.payload.pull_request.user.login;
+              if (!member_logins.includes(prAuthor)) {
+              
+                // Assign random committer
+                await github.rest.issues.addAssignees({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: context.payload.pull_request.number,
+                  assignees: member_logins[Math.floor(Math.random()*member_logins.length)],
+                });
+  
+                // Add the "pr review" label
+                await github.rest.issues.addLabels({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: context.payload.pull_request.number,
+                  labels: ['status: waiting for PR reviewer'],
+                });
+              }
+            }