usernames

#!/usr/bin/env zsh

while getopts ":n:r" opt; do
  case $opt in
		n)
			username=$OPTARG
			updateusername=true
		;;
		r)
			username=nizusan
			updateusername=true
		;;
  esac
done

if [[ $updateusername = true ]]; then
	echo 'Previous usernames'
	find . -maxdepth 1 -type f -name "*.nix" | \
	xargs -I {} \
	grep -EH '(home-manager|users)\.users\.[a-z]+' {}

	find . -maxdepth 1 -type f -name "*.nix" | \
	xargs -I {} sed -i -E "s/(home-manager|users)\.users\.[a-z]+/\1\.users\.$username/g" {}

	echo 'New usernames'
	find . -maxdepth 1 -type f -name "*.nix" | \
	xargs -I {} \
	grep -EH '(home-manager|users)\.users\.[a-z]+' {}
else
	echo "
USERNAME - update username for nix config files\n\n
SYNOPSIS
username [-r] [-n]\n\n
OPTIONS
-r
\tReset username to 'nizusan'.\n\n
-n <username>
\tUpdate username to custom value.\n\n
	"
	echo 'Existing usernames'
	find . -maxdepth 1 -type f -name "*.nix" | \
	xargs -I {} \
	grep -EH '(home-manager|users)\.users\.[a-z]+' {}
fi