installer

#!/bin/bash

set -eo pipefail

_ok() {
  echo -e "\033[0;32m OK\033[0m"
}

{
  if uname -a | grep -q "Darwin"; then
    SYS_ENV_PLATFORM=macos
  elif uname -a | grep -q "x86_64 GNU/Linux"; then
    SYS_ENV_PLATFORM=linux_x86
  elif uname -a | grep -q "aarch64 GNU/Linux"; then
    SYS_ENV_PLATFORM=linux_arm
  else
    echo "This installer does not currently support your platform. If you believe it should, please consider opening an issue on the GitHub repository:"
    echo "https://github.com/timo-reymann/deterministic-zip/issues/new"
    exit 1
  fi

  _pid="$$"

  if [ "${UID:-$(id -u)}" -ne 0 ]; then
    echo -n "Installer is not running as root, trying to use sudo ..."
    SUDO="sudo"
    $SUDO whoami >/dev/null
    _ok
  fi

  if [ -n "$DETERMINISTIC_ZIP_VERSION" ];
  then
    echo -n "Using version from DETERMINISTIC_ZIP_VERSION ..."
    version="$DETERMINISTIC_ZIP_VERSION"
  else
      echo -n "Fetch the latest version from GitHub ... "
      # shellcheck disable=SC1083
      version="$(curl -Lso /dev/null -w %{url_effective} https://github.com/timo-reymann/deterministic-zip/releases/latest | grep -o '[^/]*$')"
  fi

  _ok

  echo -n "Determine artifact to download based on host OS ... "
  # Install per platform
  case $SYS_ENV_PLATFORM in
  linux_x86)
    artifact="deterministic-zip_linux-amd64"
    ;;
  linux_arm)
    artifact="deterministic-zip_linux-arm64"
    ;;
  macos)
    artifact="deterministic-zip_darwin-amd64"
    ;;
  esac
  _ok

  echo -n "Download binary for ${version} ... "
  curl --fail -LsS https://github.com/timo-reymann/deterministic-zip/releases/download/${version}/${artifact} -o /tmp/deterministic-zip.${_pid} || { echo -e "\n\033[0;31mERR: Failed to download from https://github.com/timo-reymann/deterministic-zip/releases/download/${version}/${artifact}\033[0m" && exit 2; }
  _ok

  echo -n "Installing to /usr/local/bin ..."
  $SUDO mv /tmp/deterministic-zip.${_pid} /usr/local/bin/deterministic-zip
  $SUDO chmod +x /usr/local/bin/deterministic-zip
  _ok
}