version

#!/usr/bin/env bash

# Updates the repo to the a tagged/released version 
# from the authoritative upstream repo
# OR to the latest stable release if no version specified

UPSTREAM=https://github.com/mentorpal/aws-beanstalk-app
LATEST_RELEASE_URL="${UPSTREAM}/releases/latest"

function get_latest_stable_release() {
    URL=$(curl -Ls -o /dev/null -w %{url_effective} $1)
    VERSION=$(basename ${URL})
    if [[ -z $VERSION ]]; then
        exit 1;
    fi
    echo $VERSION
    exit 0;
}

function usage() {
    echo "usage: version publish|switch [<tag>|--latest]"
}

cmd=$1
case $cmd in
    publish|switch) ;;
    *) 
        echo "unknown command '$cmd'"
        usage
        exit 1
    ;;
esac

tag=$2
if [[ -z "$tag" ]]; then
    echo "you must pass a valid tag or '--latest'"
    usage
    exit 1
fi

if [[ "$tag" == "--latest" ]]; then
    tag="$(get_latest_stable_release ${LATEST_RELEASE_URL})"
    echo "using latest stable release version (${tag})"
fi

git remote show upstream > /dev/null 2>&1 && echo "" || git remote add upstream "${UPSTREAM}.git"
git lfs install
git fetch upstream --tags --force
git lfs fetch upstream

if [[ "$(git tag -l "$tag")" == "" ]]; then
    echo "tag ${tag} not found. use 'git tag' to check available tags"
    echo ""
    usage
    exit -1
fi

if [[ "$cmd" == "publish" ]]; then
    git push origin refs/tags/${tag}
elif [[ "$cmd" == "switch" ]]; then
    git reset --hard ${tag}
fi