#!/usr/bin/env bash
# a helper symlink script since I always forget how to do this properly

symlink() {
	local from to
	from="$1"
	to="$2"
	shift
	shift
	if [[ -z "$from" || -z "$to" ]]; then
		echo 'Usage: symlink <from> <to> [ln flags...]'
		echo 'Error: not enough arguments, provide file source "from" and destination "to" (including the link name in target directory)' 1>&2
		return 1
	fi
	# important! without full paths ln acts strange
	from="$(realpath "$from")" || return $?
	if [[ -e "$to" ]] && [[ "$*" != *"-f"* ]]; then
		echo "Error: $to already exists, specify -f flag to overwrite" 1>&2
		return 1
	fi
	echo "Linking $from -> $to" 1>&2
	echo running: ln -s "$@" "$from" "$to" 1>&2
	exec ln -s "$@" "$from" "$to"
}

symlink "$@" || exit $?