#!/usr/bin/env bash

dest=$1
machine=$HOSTNAME

if [[ -z "$dest" ]]; then
    dest="/etc/nixos/configuration.nix"
fi

if [[ -z "$machine" ]]; then
    machine=default-name
fi

if [[ ! -d "machines/$machine" || ! -f "machines/$machine/configuration.nix" ]]; then
    echo "$machine is not a known machine"
    echo "Run as \`env HOSTNAME=<MACHINE> ./install.sh\` to override."
    exit
else
    echo "Linking ./machines/$machine/configuration.nix to $dest"
fi

sudo ln -sf $PWD/machines/$machine/configuration.nix $dest