#!/usr/bin/env sh

set -e

get_latest_release_version() {
	curl --silent "https://api.github.com/repos/$1/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/'
}

package_installed() {
	apk info -vv | grep "$1" 1> /dev/null
}

main() {
	local GITHUB_PROJECT="sgerrand/alpine-pkg-glibc"
	local VERSION="$(get_latest_release_version "$GITHUB_PROJECT")"
	local RELEASE_PUBKEY_PATH="/etc/apk/keys/sgerrand.rsa.pub"
	local RELEASE_PATH="https://github.com/sgerrand/alpine-pkg-glibc/releases/download/$VERSION"
	local DEFAULT_LANG="en_US"

	[ -f "$RELEASE_PUBKEY_PATH" ] || {
		sudo wget -q -O $RELEASE_PUBKEY_PATH https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub
	}

	package_installed glibc-$VERSION || {
		sudo curl -s -OL $RELEASE_PATH/glibc-$VERSION.apk
		sudo apk add glibc-$VERSION.apk
	}

	package_installed glibc-bin-$VERSION || {
		sudo curl -s -OL $RELEASE_PATH/glibc-bin-${VERSION}.apk
		sudo apk add glibc-bin-$VERSION.apk
	}

	package_installed glibc-i18n-$VERSION || {
		sudo curl -s -OL $RELEASE_PATH/glibc-i18n-$VERSION.apk
		sudo apk add glibc-i18n-$VERSION.apk
		sudo /usr/glibc-compat/bin/localedef -i $DEFAULT_LANG -f UTF-8 $DEFAULT_LANG.UTF-8
	}
}

main