Keep scheduled workflows alive #4

	name: Keep scheduled workflows alive

	on:
	schedule:
	- cron: "23 19 3,17 * *" # 7:23pm on every 3rd and 17th of the month
	workflow_dispatch:

	env:
	GIT_CONFIG_PARAMETERS: "'user.name=CI' 'user.email=ci@github'"

	jobs:
	job:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- uses: actions/checkout@v5
	with:
	persist-credentials: 'true'
	- name: Merge the upstream default branch
	id: merge
	if: github.event.repository.fork == true
	run: \|
	git fetch --unshallow origin &&
	git fetch https://github.com/gitgitgadget/gitgitgadget-workflows HEAD &&
	if test 0 = $(git rev-list --count HEAD..FETCH_HEAD)
	then
	exit 0 # let the next step create a commit
	fi &&
	git merge --no-edit FETCH_HEAD &&
	echo "result=merged" >>$GITHUB_OUTPUT
	- name: Create a commit
	id: commit
	if: steps.merge.outputs.result != 'merged'
	run: \|
	if test workflow_dispatch != '${{ github.event_name }}' &&
	test 0 -lt $(git rev-list --count --since=3.weeks.ago HEAD)
	then
	echo "::notice::No need to keep alive, there were commits in the last three weeks"
	echo "result=skip-push" >>$GITHUB_OUTPUT
	exit 0
	fi &&
	mkdir -p .github/cached
	file='.github/cached/keepalive.txt'
	date >$file
	git add "$file"
	git commit -m "workflow keepalive"
	- name: Push changes
	if: steps.commit.outputs.result != 'skip-push'
	run: \|
	git push origin HEAD </dev/null \|\| {
	for i in 1 2 3 4 5
	do
	# In case of concurrent pushes, let's pull and push
	git pull origin $GITHUB_REF </dev/null \|\| exit 1
	git push origin HEAD </dev/null && exit 0
	done
	exit 1
	}

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