#!/usr/bin/env bash
set -euxo pipefail

###################################
# Usage:                          #
# curl nix.manu.nu | bash         #
###################################

if [[ -e ~/.config/home-manager ]]; then
  echo "Already exists: ~/.config/home-manager" >&2
  exit 1
fi

# Install & setup nix #
if ! nix --version > /dev/null 2>&1; then
  curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install
fi
if test "$USER" = "manu" && ! grep 'trusted-public-keys' /etc/nix/nix.conf; then
  echo 'trusted-public-keys = manu-fw:lGp+rkvGHyKUwcO2BmanB9btfMFDAAc3NHt4dRTCQek=' | sudo tee /etc/nix/nix.conf
fi
if ! grep 'experimental-features' /etc/nix/nix.conf; then
  echo 'experimental-features = nix-command flakes' | sudo tee /etc/nix/nix.conf
fi

# Cowsay intro #
nix --extra-experimental-features 'nix-command flakes' shell nixpkgs#neo-cowsay -c cowsay --bold --aurora -f dragon "[manu.nu] home-manager installer" || true

# Clone repo #
nix --extra-experimental-features 'nix-command flakes' shell nixpkgs#git-lfs -c git clone https://gitlab.com/onezoomin/nix/our-config ~/.config/home-manager
cd ~/.config/home-manager
# git checkout generic # until merged

# ACTIVATE #
nix --extra-experimental-features 'nix-command flakes' shell nixpkgs#home-manager nixpkgs#git-lfs -c home-manager --flake .#$USER@generic switch -b backup