[GHA] DRAFT: cleanup caches #25

	name: cleanup caches
	on:
	pull_request:
	types:
	- closed

	jobs:
	cleanup:
	runs-on: ubuntu-latest

	permissions:
	# `actions:write` permission is required to delete caches
	actions: write
	contents: read

	steps:
	- name: Check out code
	uses: actions/checkout@v3

	- name: Cleanup
	run: \|
	gh extension install actions/gh-actions-cache

	REPO=${{ github.repository }}
	BRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"

	echo "Fetching list of cache key for ${BRANCH}"
	cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 \| cut -f 1 )

	## Setting this to not fail the workflow while deleting cache keys.
	set +e
	echo "Deleting caches..."
	for cacheKey in $cacheKeysForPR
	do
	gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
	done

	BRANCH="master"
	echo "Fetching list of cache key for ${BRANCH}"
	cacheKeysForPR=( $(gh actions-cache list -R $REPO -B $BRANCH -L 100 \| cut -f 1) )
	echo "${cacheKeysForPR[@]}"
	cacheKeysForPRSliced=("${cacheKeysForPR[@]:1}")
	echo "${cacheKeysForPRSliced[@]}"
	## Setting this to not fail the workflow while deleting cache keys.
	set +e
	echo "Deleting caches..."
	for cacheKey in $cacheKeysForPRSliced
	do
	# gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
	echo "${cacheKey}"
	done
	echo "Done"
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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