#!/bin/bash

[ "${EUID:-$(id -u)}" -eq 0 ] || { >&2 echo "Please run this as root."; exit 1; }

ZSHENV_PATH="/etc/zshenv"

case "$(realpath $ZSHENV_PATH)" in
    *"/nix/"* )
        ZSHENV_PATH="/etc/zshenv.local"
        ;;
esac 

__EXTRA=""
if [[ "$OSTYPE" == "darwin"* ]]; then
	# REF: https://github.com/null2264/Hackintosh-L460?tab=readme-ov-file#bluetooth-workaround
	BT_ADDRESS="$(system_profiler SPBluetoothDataType | grep "Address:" | head -1 | sed "s/ *Address: \(.*\)/\1/g")"
	[ "$BT_ADDRESS" = "" ] || __EXTRA="""
export BT_DEVICE_ADDRESS=\"$BT_ADDRESS\""""
fi

echo """#!/bin/zsh
$__EXTRA
export ZDOTDIR=\"\${XDG_CONFIG_HOME:-\$HOME/.config}/zsh\"
[ -d \$ZDOTDIR ] || mkdir -p \$ZDOTDIR""" > /etc/__zshenv && \
mv -i /etc/__zshenv $ZSHENV_PATH
ln -si $ZSHENV_PATH /etc/zsh/zshenv