#!/usr/bin/env sh

set -eu

helmdocsv=1.4.0
bindir=$( cd "${0%/*}" && pwd ) # Change to script dir and set bin dir to this
targetbin=$( cd "$bindir"/.. && pwd )/target/bin
helmdocsbin=$targetbin/helm-docs-$helmdocsv
os=""
arch=""

if [ ! -f "$helmdocsbin" ]; then
    case $(uname | tr '[:upper:]' '[:lower:]') in
        darwin*)
            os=darwin
            arch=x86_64
            ;;
        linux*)
            os=linux
            case $(uname -m) in
                x86_64) arch=x86_64 ;;
                amd64) arch=amd64 ;;
                arm)
                    tmp=$(dpkg --print-architecture)
                    if echo "$tmp" | grep -q arm64; then
                        arch=arm64
                    elif echo "$tmp" | grep -q armv7; then
                        arch=armv7 
                    elif echo "$tmp" | grep -q armv6; then
                        arch=armv6
                    fi
                ;;
            esac
            ;;
        msys*)
            os=windows
            arch=x86_64
            ;;
    esac

    if [ -z "$os" ]; then
        echo "Couldn't find a matching binary"
        exit 126
    fi
    helmdocscurl="https://github.com/norwoodj/helm-docs/releases/download/v$helmdocsv/helm-docs_${helmdocsv}_${os}_${arch}.tar.gz"
    tmp=$(mktemp -d -t helm-docs.XXX)
    mkdir -p "$targetbin"
    (
        cd "$tmp"
        curl -Lsf -o "./helm-docs.tar.gz" "$helmdocscurl"
        tar zf "./helm-docs.tar.gz" -x "helm-docs"
        chmod +x "helm-docs"
    )
    mv "$tmp/helm-docs" "$helmdocsbin"
fi

"$helmdocsbin" "$@"