Dependabot Auto-merge #34
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| name: Dependabot Auto-merge | |
| on: | |
| pull_request_target: | |
| types: | |
| - opened | |
| - reopened | |
| - synchronize | |
| - ready_for_review | |
| workflow_run: | |
| workflows: | |
| - CI | |
| types: | |
| - completed | |
| permissions: | |
| contents: write | |
| pull-requests: write | |
| issues: write | |
| concurrency: | |
| group: dependabot-auto-merge-${{ github.event.pull_request.number || github.event.workflow_run.head_branch }} | |
| cancel-in-progress: true | |
| jobs: | |
| mark-candidate: | |
| if: github.event_name == 'pull_request_target' && github.event.pull_request.user.login == 'dependabot[bot]' | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Apply auto-merge label by default | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| PR_URL: ${{ github.event.pull_request.html_url }} | |
| run: | | |
| set -euo pipefail | |
| gh pr edit "$PR_URL" --add-label "automerge" | |
| merge-candidate: | |
| if: github.event_name == 'workflow_run' && github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'pull_request' | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Merge eligible Dependabot PR after green CI | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| GH_REPO: ${{ github.repository }} | |
| HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }} | |
| HEAD_SHA: ${{ github.event.workflow_run.head_sha }} | |
| run: | | |
| set -euo pipefail | |
| pr_json="$(gh pr list --state open --head "$HEAD_BRANCH" --json number)" | |
| pr_count="$(echo "$pr_json" | jq 'length')" | |
| if [ "$pr_count" -ne 1 ]; then | |
| exit 0 | |
| fi | |
| pr_number="$(echo "$pr_json" | jq -r '.[0].number')" | |
| details="$(gh pr view "$pr_number" --json url,author,labels,baseRefName,headRefOid,mergeStateStatus,isDraft)" | |
| author="$(echo "$details" | jq -r '.author.login')" | |
| if [ "$author" != "app/dependabot" ] && [ "$author" != "dependabot[bot]" ]; then | |
| exit 0 | |
| fi | |
| is_draft="$(echo "$details" | jq -r '.isDraft')" | |
| if [ "$is_draft" = "true" ]; then | |
| exit 0 | |
| fi | |
| base_branch="$(echo "$details" | jq -r '.baseRefName')" | |
| if [ "$base_branch" != "main" ]; then | |
| exit 0 | |
| fi | |
| if ! echo "$details" | jq -e '[.labels[].name] | index("automerge") != null' >/dev/null; then | |
| exit 0 | |
| fi | |
| if echo "$details" | jq -e '[.labels[].name] | index("hold") != null' >/dev/null; then | |
| exit 0 | |
| fi | |
| head_ref_oid="$(echo "$details" | jq -r '.headRefOid')" | |
| if [ "$head_ref_oid" != "$HEAD_SHA" ]; then | |
| exit 0 | |
| fi | |
| merge_state_status="$(echo "$details" | jq -r '.mergeStateStatus')" | |
| if [ "$merge_state_status" != "CLEAN" ]; then | |
| exit 0 | |
| fi | |
| pr_url="$(echo "$details" | jq -r '.url')" | |
| gh pr merge "$pr_url" --repo "$GH_REPO" --squash --delete-branch |