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ci: fix dependabot auto-merge for grouped updates #309

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ci: fix dependabot auto-merge for grouped updates #309

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33 changes: 29 additions & 4 deletions .github/workflows/auto-merge.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,21 +17,46 @@ jobs:
with:
github-token: "${{ secrets.GITHUB_TOKEN }}"

- name: Check for major version bumps in PR body
if: steps.metadata.outputs.update-type == ''
id: check-major
env:
PR_BODY: ${{ github.event.pull_request.body }}
run: |
# Parse "from X to Y" version pairs from the PR body and flag major bumps.
HAS_MAJOR=false
while IFS= read -r line; do
from_ver=$(echo "$line" | sed -n 's/.*from \([0-9][0-9.]*\) to \([0-9][0-9.]*\).*/\1/p')
to_ver=$(echo "$line" | sed -n 's/.*from \([0-9][0-9.]*\) to \([0-9][0-9.]*\).*/\2/p')
[ -z "$from_ver" ] && continue
from_major="${from_ver%%.*}"
to_major="${to_ver%%.*}"
if [ "$from_major" != "$to_major" ]; then
echo "Major bump detected: $from_ver -> $to_ver"
HAS_MAJOR=true
fi
done <<< "$PR_BODY"
echo "has_major=$HAS_MAJOR" >> "$GITHUB_OUTPUT"

- name: Approve PR
if: >-
(contains(steps.metadata.outputs.update-type, 'version-update:semver-minor') ||
((contains(steps.metadata.outputs.update-type, 'version-update:semver-minor') ||
contains(steps.metadata.outputs.update-type, 'version-update:semver-patch')) &&
!contains(steps.metadata.outputs.update-type, 'version-update:semver-major')
!contains(steps.metadata.outputs.update-type, 'version-update:semver-major')) ||
(steps.metadata.outputs.update-type == '' &&
steps.check-major.outputs.has_major != 'true')
run: gh pr review --approve "$PR_URL"
env:
PR_URL: ${{ github.event.pull_request.html_url }}
GH_TOKEN: ${{ secrets.DEPENDABOT_TOKEN }}

- name: Enable auto-merge for minor and patch updates
if: >-
(contains(steps.metadata.outputs.update-type, 'version-update:semver-minor') ||
((contains(steps.metadata.outputs.update-type, 'version-update:semver-minor') ||
contains(steps.metadata.outputs.update-type, 'version-update:semver-patch')) &&
!contains(steps.metadata.outputs.update-type, 'version-update:semver-major')
!contains(steps.metadata.outputs.update-type, 'version-update:semver-major')) ||
(steps.metadata.outputs.update-type == '' &&
steps.check-major.outputs.has_major != 'true')
run: gh pr merge --auto --squash "$PR_URL"
env:
PR_URL: ${{ github.event.pull_request.html_url }}
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