#!/bin/bash

## List upstream available versions in reverse chronological order
##
## These versions information will be the input for the version information
## usually used by the build process.
## A external query of upstream sources will be done.
##

## This script is launched by ``charm upstream-versions`` and will receive these env variables
##
##
##  VERSION_LIMIT   ## limit number of version to read
##
##
## The script CWD will be the root of the charm directory
##

DOCKER_IMAGE_NAME=mongo

semver:normalize() {
    local upstream_version="$1"
    echo "$upstream_version"
}


upstream:list() {
    local limit=${1:-5}
    docker-tags-fetch "$DOCKER_IMAGE_NAME" -l "${limit}" -f "^[0-9]+\.[0-9]+\.[0-9]+$" |
        sort -rV
}


while read -r "upstream_version"; do
    printf "%s %s\n" "$(semver:normalize "${upstream_version}")" "$upstream_version"
done < <(upstream:list "${VERSION_LIMIT}")