#!/system/bin/env sh
#
# Setup pacman in termux
set -e

check_failsafe() {
  if [ -n "${TERMUX_MAIN_PACKAGE_FORMAT}" ]; then
    echo '! Not failsafe' >&2
    echo '- Left edge swipe ==> "new session" (long-tap)' >&2
    exit 1
  fi
}

bootstrap() {
  local bootstrap="${HOME}/bootstrap"
  [ -d "${bootstrap}" ] && rm -rf -- "${bootstrap}"
  mkdir -p -- "${bootstrap}"

  local machine
  machine=$(uname -m)
  if [ "${machine}" == 'aarch64' ]; then
    local arch='aarch64'
  elif [ "${machine}" == 'armv7l' ]; then
    local arch='arm'
  fi

  local zipurl
  zipurl='https://github.com/termux-pacman/termux-packages/releases/latest'
  zipurl="${zipurl}/download/bootstrap-${arch}.zip"
  "${PREFIX}/bin/curl" -fLZ -o "${PREFIX}/bootstrap.zip" -- "${zipurl}"
  
  unzip -d "${bootstrap}" "${PREFIX}/bootstrap.zip"
  cd "${bootstrap}"  # For symlinks
  awk -F '←' '{system("ln -sv '"'"'"$1"'"'"' '"'"'"$2"'"'"' &")}' \
    "${bootstrap}/SYMLINKS.txt"
  
  rm -f -- "${bootstrap}/SYMLINKS.txt"
  rm -rf -- "${PREFIX}"
  cd ..
  mv -v -- "${bootstrap}" "${PREFIX}"
  
  export PATH="${PREFIX}/bin"
}

main() {
  local tmp="${PREFIX}/tmp/tqs"

  check_failsafe
  bootstrap

  local pacmanconf
  pacmanconf='https://raw.githubusercontent.com/nedorazrab0/tqs/main/cfg'
  pacmanconf="${pacmanconf}/usr/etc/pacman.conf"
  curl -fL -o "${PREFIX}/etc/pacman.conf" -- "${pacmanconf}"

  local serverlist
  serverlist='https://raw.githubusercontent.com/nedorazrab0/tqs/main/cfg'
  serverlist="${serverlist}/usr/etc/pacman.d/serverlist"
  curl -fL -o "${PREFIX}/etc/pacman.d/serverlist" -- "${serverlist}"

  pacman-key --init
  pacman-key --populate
  pacman -Syyu lz4 bsdtar --noconfirm

  rm -rf -- "${HOME}/"*

  [ -d "${tmp}" ] && rm -rf -- "${tmp}"
  mkdir -p -- "${tmp}"

  local mainurl
  mainurl='https://github.com/nedorazrab0/tqs/releases/download/tqs'
  mainurl="${mainurl}/tqs.tar.lz4"
  curl -fL -- "${mainurl}" | lz4 -dvc | bsdtar -x -C "${tmp}"

  exec bash "${tmp}/ext"
}

main