feat: add PR review labels automation

.github/workflows/pr-labels.yml

@@ -0,0 +1,64 @@
+name: PR Review Labels
+
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronize, ready_for_review]
+  pull_request_review:
+    types: [submitted, edited, dismissed]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  update-labels:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update PR labels based on reviews
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const { owner, repo } = context.repo;
+            const pr_number = context.payload.pull_request.number;
+
+            // 获取 PR 的所有 reviews
+            const reviews = await github.rest.pulls.listReviews({
+              owner,
+              repo,
+              pull_number: pr_number
+            });
+
+            // 计算 approved 的数量
+            const approvedCount = reviews.data.filter(
+              review => review.state === 'APPROVED'
+            ).length;
+
+            // 获取当前 PR 的标签
+            const { data: currentLabels } = await github.rest.issues.listLabelsOnIssue({
+              owner,
+              repo,
+              issue_number: pr_number
+            });
+
+            // 移除已有的 action 标签
+            const labelsToRemove = currentLabels
+              .filter(label => label.name === 'action:merge' || label.name === 'action:review')
+              .map(label => label.name);
+
+            for (const label of labelsToRemove) {
+              await github.rest.issues.removeLabel({
+                owner,
+                repo,
+                issue_number: pr_number,
+                name: label
+              });
+            }
+
+            // 根据 approved 数量添加对应标签
+            const newLabel = approvedCount >= 2 ? 'action:merge' : 'action:review';
+            await github.rest.issues.addLabels({
+              owner,
+              repo,
+              issue_number: pr_number,
+              labels: [newLabel]
+            });