#!/usr/bin/env bash
# Apply Kontra Nix additions on .13 and rebuild. Run as: sudo bash deploy-apply.sh --from /var/www/kontra_day/deploy
set -euo pipefail

DEPLOY_DIR="${1:-/var/www/kontra_day/deploy}"
CFG=/etc/nixos/configuration.nix
BAK=$CFG.bak-kontra-$(date +%Y%m%d-%H%M%S)

echo "== backup configuration.nix -> $BAK"
cp -a "$CFG" "$BAK"

echo "== patch configuration.nix"
python3 "$DEPLOY_DIR/patch-nix.py" "$CFG"

echo "== Nix syntax check"
if ! nix-instantiate --parse "$CFG" >/dev/null; then
  echo "!! Nix syntax FAILED — restoring backup"
  cp -a "$BAK" "$CFG"
  exit 1
fi
echo "OK"

echo "== nixos-rebuild switch (may take minutes)"
nixos-rebuild switch --show-trace 2>&1 | tail -40

echo "== status"
systemctl --no-pager --full status kontra.service 2>/dev/null | head -12
systemctl --no-pager list-timers kontra-pull.timer 2>/dev/null | head -4
echo "ALL DONE"