CodeGraph/.github/workflows/codegraph-pr.yml at main · codegraph-ai/CodeGraph · GitHub

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# CodeGraph PR Review — posts a code-graph analysis comment on every PR.
#
# Runs graph-only (no embeddings, no ONNX model) so it's fast and light:
# typically completes in well under a minute even on large repos.
#
# Copy this file into your own repo at .github/workflows/codegraph-pr.yml
# No secrets or API keys required — uses the built-in GITHUB_TOKEN.
name: CodeGraph PR Review

on:
  pull_request:
    types: [opened, synchronize, reopened]

permissions:
  contents: read
  pull-requests: write

jobs:
  review:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout (full history)
        uses: actions/checkout@v4
        with:
          # fetch-depth: 0 is REQUIRED — pr_context runs
          # `git diff <base>...HEAD`, which needs the base branch history.
          # The default shallow clone breaks the diff.
          fetch-depth: 0

      - name: Install CodeGraph
        run: npm install -g @astudioplus/codegraph-mcp

      - name: Run PR review
        id: review
        run: |
          # Resolve the npm-installed binary for this platform
          BIN="$(npm root -g)/@astudioplus/codegraph-mcp/bin/codegraph-server-linux-x64"
          # stderr → log (visible in the Actions run); stdout → comment body
          # Use origin/<base> — in a PR checkout the base branch exists as
          # a remote-tracking ref, not a local branch. (codegraph 0.17.6+
          # auto-resolves this, but origin/ works on all versions.)
          if "$BIN" \
              --graph-only \
              --run-tool codegraph_pr_context \
              --tool-args "{\"baseBranch\":\"origin/${{ github.base_ref }}\",\"format\":\"markdown\"}" \
              > review.md 2> review.err; then
            echo "CodeGraph review succeeded"
          else
            echo "::warning::CodeGraph review failed — see stderr below"
            cat review.err
            {
              echo "## 🔍 CodeGraph PR Review"
              echo ""
              echo "Review could not be generated for this PR. <sub>(CodeGraph)</sub>"
            } > review.md
          fi

      - name: Post or update PR comment
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const body = fs.readFileSync('review.md', 'utf8');
            const marker = '## 🔍 CodeGraph PR Review';

            // Find an existing CodeGraph comment to update (avoids comment spam)
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            const existing = comments.find(c => c.body.startsWith(marker));

            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body,
              });
            }