versions.sh

#!/usr/bin/env bash
set -Eeuo pipefail

alpine="$(
	bashbrew cat --format '{{ .TagEntry.Tags | join "\n" }}' https://github.com/docker-library/official-images/raw/HEAD/library/alpine:latest \
		| grep -E '^[0-9]+[.][0-9]+$'
)"
[ "$(wc -l <<<"$alpine")" = 1 ]
export alpine

debian="$(
	bashbrew cat --format '{{ .TagEntry.Tags | join "\n" }}' https://github.com/docker-library/official-images/raw/HEAD/library/debian:latest \
		| grep -vE '^latest$|[0-9.-]' \
		| head -1
)"
[ "$(wc -l <<<"$debian")" = 1 ]
export debian

cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"

versions=( "$@" )
if [ ${#versions[@]} -eq 0 ]; then
	versions=( */ )
	json='{}'
else
	json="$(< versions.json)"
fi
versions=( "${versions[@]%/}" )

packages="$(
	wget -qO- 'https://github.com/valkey-io/valkey-hashes/raw/main/README' \
	| jq -csR '
		rtrimstr("\n")
		| split("\n")
		| map(
			# this capture will naturally ignore comments and blank lines
			capture(
				[
					"^hash[[:space:]]+",
					"(?<file>valkey-",
						"(?<version>([0-9.]+)(-rc[0-9]+)?|unstable)",
					"[.][^[:space:]]+)[[:space:]]+",
					"(?<type>sha256|sha1)[[:space:]]+", # this filters us down to just the checksum types we are prepared to handle right now
					"(?<sum>[0-9a-f]{64}|[0-9a-f]{40})[[:space:]]+",
					"(?<url>[^[:space:]]+)",
					"$"
				] | join("")
			)
			| {
				version: .version,
				url: .url,
				(.type): .sum,
			}
		)
	'
)"

for version in "${versions[@]}"; do
	export version rcVersion="${version%-rc}"
	if [ "$version" = "unstable" ]; then
		doc="$(
			jq <<<"$packages" -c '
				map(select(.version == "unstable"))[-1]
			'
		)"
	else
		doc="$(
			jq <<<"$packages" -c '
				map(
					select(
						.version
						| (
							startswith(env.rcVersion + ".")
							or startswith(env.rcVersion + "-")
						)
					)
				)[-1]
			'
		)"
	fi

	fullVersion="$(jq <<<"$doc" -r '.version')"
	echo "$version: $fullVersion"

	json="$(jq <<<"$json" -c --argjson doc "$doc" '
		.[env.version] = ($doc + {
			debian: { version: env.debian },
			alpine: { version: env.alpine },
		})
	')"
done

jq <<<"$json" . > versions.json