#!/usr/bin/env bash

# general installer for sharkdp's rust based applications

USAGE="Usage: ${0##*/} <app>"
APPS="Apps: bat, hyperfine, hexyl, fd, vivid, pastel, lscolors, diskus"

app=$1

if [[ -z $app || $app == "help" ]]; then
	echo $USAGE >&2
	echo $APPS >&2
  exit 0
fi

if [[ "$app" == "list" ]]; then
	echo $USAGE >&2
  exit 0
fi

if [ ! "$(which $app)" ]; then
  current_version=0.0.0
  echo "$app: not installed"
else
  current_version=$($app --version | grep -oE "[0-9\.]+")
  echo "$app: found $current_version"
fi

latest_version=$(curl -s "https://github.com/sharkdp/${app}/releases/latest" | grep -oE '[0-9]+.[0-9\.]+')

if [ "$2" ]; then
  latest_version=$2
fi

if [[ "$current_version" == "$latest_version" ]]; then
  echo "$app: up-to-date"
else
  echo "$app: new version found $latest_version"
  echo "$app: downloading..."

  arch="$(uname -m)"
  filename="${app}-v${latest_version}-${arch}-unknown-linux-musl"

  curl -fsSLo "${filename}.tar.gz" "https://github.com/sharkdp/${app}/releases/download/v${latest_version}/${filename}.tar.gz"
  tar -zxvf "${filename}.tar.gz" "${filename}/${app}"

  mv "${filename}/${app}" "${HOME}/.local/bin/"
  
  rm -r "${filename}"
  rm "${filename}.tar.gz"
fi