Submodule update #149

	name: Submodule update

	on:
	schedule:
	- cron: '0 6 * * MON'

	workflow_dispatch:

	jobs:
	check-and-update:

	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository and submodule
	uses: actions/checkout@v2
	with:
	submodules: recursive

	- name: script
	run: \|
	cd learnGitBranching
	if [ $(git rev-list HEAD...origin/main --count) != 0 ]; then
	echo 'Update pending'
	echo "REPO_DISPATCH=true" >> "$GITHUB_ENV"
	else
	echo 'Nothing to update'
	echo "REPO_DISPATCH=false" >> "$GITHUB_ENV"
	exit 0
	fi

	cd ..
	msg=$(git submodule update --remote)
	commitstr=$(echo $msg \| grep -oP "checked out '\K\w+")
	git config --global user.name 'Git bot'
	git config --global user.email 'bot@noreply.github.com'
	git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
	git commit -am "Auto updated submodule reference: pcottle/learnGitBranching@${commitstr}"
	git push
	- name: Repository Dispatch
	if: env.REPO_DISPATCH != 'false'
	uses: peter-evans/repository-dispatch@v1
	with:
	token: ${{ secrets.REPO_ACCESS_TOKEN }}
	repository: ${{ github.repository }}
	event-type: submodule-updated

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