#!/usr/bin/env bash

# will be rewritten some day

help () {
  echo "dchr-bs <distro> <arch> <chroot-dir>"
  echo "-- supported distros:"
  echo "   archlinux"
  #echo "   voidlinux"
  echo "https://dchr.dc09.ru"
}

bs_archlinux () {
  url="https://mirrors.edge.kernel.org/archlinux/iso/latest/archlinux-bootstrap-$1.tar.gz"

  echo '-- Downloading'
  if which wget 2>/dev/null
  then
    wget -O ./rootfs.tar.gz "$url" || exit 2
  elif which curl 2>/dev/null
  then
    curl -o ./rootfs.tar.gz "$url" || exit 2
  else
    echo -e "-- \e[1;31mError\e[0m -- install either curl or wget"
    exit 1
  fi

  echo '-- Extracting'
  tar xzf ./rootfs.tar.gz -C "$2/" || exit 3
  mv "$2/root.$1"/* "$2" || exit 4
  rmdir "$2/root.$1"
  echo '-- Removing rootfs archive'
  rm ./rootfs.tar.gz

  echo '-- Setting up'
  sed -i '/evowise/s/^#//' "$2/etc/pacman.d/mirrorlist"
  sed -i '/CheckSpace/s/^/#/' "$2/etc/pacman.conf"
  cp /etc/hosts "$2/etc/hosts"
  cp /etc/resolv.conf "$2/etc/resolv.conf"

  echo -e '-- \e[1;32mOK\e[0m -- archlinux bootstrapped'
  echo '-- Use dchr-run to enter the chroot and execute the following commands:'
  # some day i will rewrite this script and it will do it automatically
  echo '# pacman-key --init'
  echo '# pacman-key --populate archlinux'
  echo '# pacman -Syu'
}

[[ "$1" != "archlinux" || "$1" == "--help" || "$1" == "" || "$2" == "" || "$3" == "" ]] && help && exit 0

bs_archlinux "$2" $(readlink -f "$3")