#!/usr/bin/env miaou-bash

# CONSTANTS

#FIXME: source from functions.bash
readonly DESTINATION=/opt
readonly MAIN_TAR_GZ_URL="https://git.artcode.re/miaou/miaou-bash/archive/main.tar.gz"

# FUNCTIONS

#FIXME: source from functions.bash
function bootstrap {
  if [[ ! -d "$DESTINATION/miaou-bash" ]]; then
    local temp_dir
    temp_dir=$(mktemp -d)
    pushd "$temp_dir" >/dev/null || return 2
    curl -s -O $MAIN_TAR_GZ_URL
    tar -xzf main.tar.gz --directory "$DESTINATION"
    echo "directory: miaou-bash successfully deployed to $DESTINATION"
    popd >/dev/null || return 3
  fi

  local source_bin="$DESTINATION/miaou-bash/bin/miaou-bash"
  local dest_bin="/usr/bin/miaou-bash"
  if ! cmp -s "$source_bin" "$dest_bin"; then
    cp -f "$source_bin" "$dest_bin"
    echo "executable: /usr/bin/miaou-bash freshly created"
  fi

  export MIAOU_BASH_DIR="$DESTINATION/miaou-bash"
}

# MAIN

[[ "$UID" -ne 0 ]] && echo 'root privilege required' && exit 1

current=$(miaou-bash --version)
latest=$("$MIAOU_BASH_DIR/tools/wget_semver" artcode miaou/miaou-bash)

if [[ "$current" == "$latest" ]]; then
  echo "up-to-date version: $current"
else
  bootstrap
  miaou-bash "$MIAOU_BASH_DIR/lib/init.bash"
  echo "miaou-bash successfully updated"
  miaou-bash --version
fi