Merge pull request #49 from pyth-network/feature/gatekeeper-docs-only

Skip extra approvals for docs-only PRs

Author: ilyashatalov

.github/workflows/ai-gatekeeper.yaml

@@ -37,6 +37,7 @@ jobs:
             printf 'summary=%s\n' "No PR context; skipping gatekeeper checks." >> "$GITHUB_OUTPUT"
             echo "details=" >> "$GITHUB_OUTPUT"
             echo "is_bot=false" >> "$GITHUB_OUTPUT"
+            echo "docs_only=false" >> "$GITHUB_OUTPUT"
             exit 0
           fi
 
@@ -59,10 +60,44 @@ jobs:
             printf 'summary=%s\n' "Not a Devin-authored PR. Skipping human-review enforcement." >> "$GITHUB_OUTPUT"
             echo "details=" >> "$GITHUB_OUTPUT"
             echo "is_bot=false" >> "$GITHUB_OUTPUT"
+            echo "docs_only=false" >> "$GITHUB_OUTPUT"
             exit 0
           fi
           echo "is_bot=true" >> "$GITHUB_OUTPUT"
 
+          # 2b. Docs-only changes skip additional approvals
+          PR_FILES=$(gh api "repos/$REPO/pulls/$PR/files" --paginate)
+          DOCS_ONLY=$(
+            echo "$PR_FILES" | jq -r '
+              if length == 0 then
+                "false"
+              else
+                all(.[]; (
+                  (.filename | test("(?i)^(docs|doc)/"))
+                  or (.filename | test("(?i)\\.(md|mdx|markdown|rst|adoc)$"))
+                  or (.filename | test("(?i)(^|/)(README|CHANGELOG)(\\..*)?$"))
+                )) | tostring
+              end
+            '
+          )
+
+          if [ "$DOCS_ONLY" = "true" ]; then
+            FILES_LIST=$(echo "$PR_FILES" | jq -r '[.[].filename] | map("- " + .) | join("\n")')
+            echo "docs_only=true" >> "$GITHUB_OUTPUT"
+            echo "conclusion=success" >> "$GITHUB_OUTPUT"
+            printf 'summary=%s\n' "Docs-only changes detected. Additional approvals are not required." >> "$GITHUB_OUTPUT"
+            {
+              echo "details<<EOF"
+              echo "Docs-only files:"
+              echo "$FILES_LIST"
+              echo "EOF"
+            } >> "$GITHUB_OUTPUT"
+            echo "approvals_list=" >> "$GITHUB_OUTPUT"
+            echo "approvals_missing=0" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+          echo "docs_only=false" >> "$GITHUB_OUTPUT"
+
           # 3. Reduce to latest review per human
           LATEST_REVIEWS_JSON=$(
             echo "$PR_DATA" | jq -c '
@@ -153,11 +188,16 @@ jobs:
           APPROVERS: ${{ steps.evaluate.outputs.approvals_list }}
           MISSING: ${{ steps.evaluate.outputs.approvals_missing }}
           CONCLUSION: ${{ steps.evaluate.outputs.conclusion }}
+          DOCS_ONLY: ${{ steps.evaluate.outputs.docs_only }}
         run: |
           set -euo pipefail
           MARKER="<!-- bot-proxy-gatekeeper-comment -->"
           APPROVER_LINE="Current approvals: ${APPROVERS:-none}"
-          if [ "$CONCLUSION" = "success" ]; then
+          if [ "$DOCS_ONLY" = "true" ]; then
+            MSG=$(printf "%s\n%s" \
+              "$MARKER" \
+              "📝 **Docs-only changes**: additional approvals are not required.")
+          elif [ "$CONCLUSION" = "success" ]; then
             MSG=$(printf "%s\n%s\n\n**%s**" \
               "$MARKER" \
               "✅ **Review Requirements Satisfied**: 2 different human approvals are present." \