#!/bin/bash

set -eu

helmversion=v2.14.3
bindir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
rootdir="$( cd $bindir/.. && pwd )"
helmbin=$rootdir/target/helm-$helmversion

if [ ! -f $helmbin ]; then
    if [ "$(uname -s)" = "Darwin" ]; then
        os=darwin
        arch=amd64
    else
        os=linux
        case $(uname -m) in
            x86_64) arch="amd64" ;;
            arm) dpkg --print-architecture | grep -q "arm64" && arch="arm64" || arch="arm" ;;
        esac
    fi
    helmcurl="https://get.helm.sh/helm-${helmversion}-${os}-${arch}.tar.gz"
    targetdir="${os}-${arch}"
    tmp=$(mktemp -d -t helm.XXX)
    mkdir -p target
    (
        cd "$tmp"
        curl -Lsf -o "./helm.tar.gz" "$helmcurl"
        tar zf "./helm.tar.gz" -x "$targetdir"
        chmod +x "$targetdir/helm"
    )
    mv "$tmp/$targetdir/helm" "$helmbin"
    rm -rf "$tmp"
fi

$helmbin "$@"