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

HOST="${1:-ops-jrz1}"

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$repo_root"

echo "== Local working tree =="
git status -sb

echo

echo "== Commits ahead of origin/main =="
if git rev-parse --verify origin/main >/dev/null 2>&1; then
  git log --oneline origin/main..HEAD || true
else
  echo "origin/main not found (run: git fetch origin)"
fi

echo

echo "== Local HEAD =="
local_head="$(git rev-parse HEAD)"
echo "$local_head"

echo

echo "== Remote configuration revision ($HOST) =="
remote_rev="$(ssh "root@${HOST}" 'nixos-version --configuration-revision' || true)"
if [[ -z "$remote_rev" || "$remote_rev" == "" ]]; then
  echo "(empty)"
else
  echo "$remote_rev"
fi

echo

echo "== Comparison =="
if [[ -n "$remote_rev" && "$remote_rev" == "$local_head" ]]; then
  echo "OK: remote matches local HEAD"
else
  echo "NOTE: remote does not match local HEAD"
  echo "Remote: ${remote_rev:-<empty>}"
  echo "Local:  $local_head"
fi

echo

echo "== Remote current system =="
ssh "root@${HOST}" 'readlink /run/current-system'