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

# FLAKE_PATH="${1:-/tmp/flake}"
FLAKE_PATH=./flake.nix
CACHE="mycache"
GC_ROOT="/tmp/gcroots-ci"
mkdir -p "$GC_ROOT"

declare -a paths_to_push

# Build all NixOS configs
nixos_configs=$(nix eval --json "$FLAKE_PATH#nixosConfigurations" --apply 'builtins.attrNames' | jq -r '.[]')
for host in $nixos_configs; do
  echo "▶ Building NixOS config: $host"
  out_path=$(nix build --print-out-paths "$FLAKE_PATH#nixosConfigurations.${host}.config.system.build.toplevel")
  paths_to_push+=("$out_path")
done

# Build all Home Manager configs
home_configs=$(nix eval --json "$FLAKE_PATH#homeConfigurations" --apply 'builtins.attrNames' | jq -r '.[]')
for user in $home_configs; do
  echo "▶ Building Home config: $user"
  out_path=$(nix build --print-out-paths "$FLAKE_PATH#homeConfigurations.${user}.activationPackage")
  paths_to_push+=("$out_path")
done

# Push all at once
echo "📦 Pushing ${#paths_to_push[@]} paths to attic cache: $CACHE"
attic push "$CACHE" "${paths_to_push[@]}"

# Clean up
nix store delete "${paths_to_push[@]}"