#!/usr/bin/env bash
# Exit 0 if every submodule has a clean working tree (no modified/untracked files).
# Use in CI or after merges: bash scripts/verify/submodules-clean.sh
# Set SKIP_EXIT=1 to report dirty submodules without failing.
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
cd "$ROOT"
SKIP_EXIT="${SKIP_EXIT:-0}"

tmp="$(mktemp)"
trap 'rm -f "$tmp"' EXIT

dirty=0
while IFS= read -r subpath; do
  [[ -z "$subpath" ]] && continue
  if ! git -C "$ROOT/$subpath" rev-parse --git-dir >/dev/null 2>&1; then
    continue
  fi
  out="$(git -C "$ROOT/$subpath" status --porcelain 2>/dev/null || true)"
  if [[ -n "$out" ]]; then
    dirty=1
    printf '%s\n' "=== $subpath ===" >>"$tmp"
    printf '%s\n' "$out" >>"$tmp"
  fi
done < <(git config --file .gitmodules --get-regexp '^submodule\..*\.path$' | awk '{print $2}' | sort -u)

if (( dirty )); then
  echo "submodules-clean: dirty submodule working trees:" >&2
  cat "$tmp" >&2
  if [[ "$SKIP_EXIT" != "1" ]]; then
    exit 1
  fi
  exit 0
fi

echo "submodules-clean: OK (all submodules clean)"