#!/usr/bin/env miaou-bash

# CONSTANTS
[[ ! -v MAIN_TAR_GZ_URL ]] &&
  readonly MAIN_TAR_GZ_URL="https://git.artcode.re/miaou/miaou-bash/archive/main.tar.gz"

# FUNCTIONS

function bootstrap {
  cd "$(mktemp -d)" || exit 3
  curl -s -O "$MAIN_TAR_GZ_URL"
  tar -xzf main.tar.gz --directory "$(dirname "$MIAOU_BASH_DIR")"

  local source_bin="$MIAOU_BASH_DIR/bin/miaou-bash"
  local dest_bin="/usr/bin/miaou-bash"
  if ! cmp -s "$source_bin" "$dest_bin"; then
    cp -f "$source_bin" "$dest_bin"
  fi
  echo "miaou-bash refreshed from: $MIAOU_BASH_DIR"
}

function self_upgrade {
  mv "$MIAOU_BASH_DIR" "$MIAOU_BASH_DIR".before_upgrade
  "$MIAOU_BASH_DIR".before_upgrade/install.sh
  rm -rf "$MIAOU_BASH_DIR".before_upgrade
  echo "miaou-bash successfully updated"
  . "$MIAOU_BASH_DIR"/bin/miaou-bash --version
}

# MAIN

source "$MIAOU_BASH_DIR"/lib/functions.bash
assert_system_mode
assert_root

current=$(miaou-bash --version)
latest=$("$MIAOU_BASH_DIR/tools/wget_semver" artcode miaou/miaou-bash)
if [[ "$current" == "$latest" ]]; then
  echo "up-to-date version: $current"
else
  self_upgrade
fi