. "${GITHUB_ACTION_PATH}/utils.sh"

# USAGE: base_report_url
base_report_url() {
	curl -X 'GET' \
		"$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/actions/tasks" \
		-H "Authorization: token $GITHUB_TOKEN" \
		-H 'accept: application/json' |
		jq --raw-output \
			--arg name "$JOB_NAME" \
			--arg head_branch "$HEAD_BRANCH" \
			'[.workflow_runs[] | select(.name == $name and .head_branch == $head_branch)] | first | .url'
}
# USAGE: has_report <REPORT_URL>
has_report() {
	http_code=$(curl -X 'GET' -o /dev/null --silent -Iw '%{http_code}' \
		"$1" -H "Authorization: token $GITHUB_TOKEN")
	log "Got code $http_code for $1"
	test "$http_code" = '200'
}

# If we have a previous report compare against it
if [ "$PRIVATE_REPO" = 'true' ]; then
	log "In a private repo, downloading $HEAD_BRANCH to build the old report"

	old=$(mktemp -d)
	group 'Downloaded files'
	curl -X 'GET' \
		"$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/archive/$HEAD_BRANCH.tar.gz" \
		-H "Authorization: token $GITHUB_TOKEN" |
		tar -zvx --strip-components=1 -C "$old"
	endgroup

	(cd "$old" && "$GITHUB_ACTION_PATH/create-report.sh") >old-report.json

	exit 0
elif [ "$JOB_NAME" ] && [ "$HEAD_BRANCH" ]; then
	url=$(base_report_url)

	log "Found previous run at: $url"
	report_url="$url/artifacts/$ARTIFACT_NAME"

	if has_report "$report_url"; then
		log 'Found previous report, downloading...'
		curl -X 'GET' \
			"$report_url" \
			-H "Authorization: token $GITHUB_TOKEN" |
			gunzip >old-report.json
		log "Reporting on sizes and comparing to sizes in $HEAD_BRANCH"
		exit 0
	else
		log "Failed to find previous report, expected at: $report_url"
	fi
fi

exit 1