#!/usr/bin/env bash

set -x
set -e

VERSION=${VERSION:-0.76.3}
PREFIX_DIR=/usr/local
BIN_DIR="${PREFIX_DIR}/bin"

OS=
if [[ $OSTYPE =~ linux ]]; then
    OS=Linux
elif [[  $OSTYPE =~ darwin ]]; then
    OS=macOS
else
    echo unknown os: "$OSTYPE"
    exit 1
fi

URL=https://github.com/gohugoio/hugo/releases/download/v${VERSION}/hugo_${VERSION}_${OS}-64bit.tar.gz
TMP_DIR=$(mktemp --directory)

cd "$TMP_DIR"
curl --location --silent --output release.tar.gz "${URL}"
tar xvzf release.tar.gz
sudo chown root:root hugo

sudo mkdir -p "${PREFIX_DIR}/apps/hugo/${VERSION}"
sudo mv ./hugo "${PREFIX_DIR}/apps/hugo/${VERSION}/hugo"
cd "${PREFIX_DIR}/apps/hugo/"
[[ -s current ]] && sudo unlink current
sudo ln -s "${VERSION}" current

cd ${BIN_DIR}
[[ -L ${BIN_DIR}/hugo ]] || sudo ln --symbolic "${PREFIX_DIR}/apps/hugo/current/hugo"

if [[ $TMP_DIR != "" ]]; then
    rm -rf "${TMP_DIR}"
    echo removed up temp directory "${TMP_DIR}"
fi