tide: changes requested block merge when branch protection requires reviews

pkg/tide/github.go

@@ -621,6 +621,11 @@ func (m *mergeChecker) isAllowedToMerge(crc *CodeReviewCommon) (string, error) {
 	} else if !allowed {
 		return fmt.Sprintf("Merge type %q disallowed by repo settings", *mergeMethod), nil
 	}
+	// Check GitHub's mergeStateStatus which reflects all GitHub-side merge blocking conditions
+	// including branch protection rules, rulesets, required reviews, status checks, etc.
+	if pr.MergeStateStatus == "BLOCKED" {
+		return "PR is blocked from merging by GitHub (check branch protection, required reviews, or rulesets)", nil
+	}
 	return "", nil
 }
 

pkg/tide/status.go

@@ -253,13 +253,19 @@ func requirementDiff(pr *PullRequest, q *config.TideQuery, cc contextChecker) (s
 			desc = fmt.Sprintf(" Jobs %s have not succeeded.", strings.Join(trunced, ", "))
 		}
 	}
-
 	if q.ReviewApprovedRequired && pr.ReviewDecision != githubql.PullRequestReviewDecisionApproved {
 		diff += 50
 		if desc == "" {
 			desc = " PullRequest is missing sufficient approving GitHub review(s)"
 		}
 	}
+	// Check GitHub's mergeStateStatus which reflects all GitHub-side blocking conditions
+	if pr.MergeStateStatus == "BLOCKED" {
+		diff += 100
+		if desc == "" {
+			desc = " Blocked by GitHub (branch rulesets or protection)"
+		}
+	}
 	return desc, diff
 }