#!/usr/bin/env bash
set -euo pipefail
ISO=./iso/live-image-amd64.hybrid.iso
TMP=./.tmp_iso_inspect
rm -rf "$TMP" && mkdir -p "$TMP"

if command -v bsdtar >/dev/null 2>&1; then
  bsdtar -xf "$ISO" -C "$TMP" live/filesystem.squashfs isolinux/isolinux.cfg boot/grub/grub.cfg 2>/dev/null || true
elif command -v 7z >/dev/null 2>&1; then
  7z x -y -o"$TMP" "$ISO" live/filesystem.squashfs isolinux/isolinux.cfg boot/grub/grub.cfg >/dev/null
else
  echo "NO_EXTRACTOR"
  exit 2
fi

echo "=== Boot config snippets ==="
if [ -f "$TMP/isolinux/isolinux.cfg" ]; then
  echo "-- isolinux.cfg --"
  sed -n '1,220p' "$TMP/isolinux/isolinux.cfg"
fi
if [ -f "$TMP/boot/grub/grub.cfg" ]; then
  echo "-- grub.cfg --"
  sed -n '1,260p' "$TMP/boot/grub/grub.cfg"
fi

if ! command -v unsquashfs >/dev/null 2>&1; then
  echo "NO_UNSQUASHFS"
  exit 3
fi

SQ="$TMP/live/filesystem.squashfs"
[ -f "$SQ" ] || { echo "MISSING_SQUASHFS"; exit 4; }

echo "=== Squashfs checks (paths) ==="
unsquashfs -ll "$SQ" | grep -E "/usr/local/sbin/nostr-id-tui$|/etc/systemd/system/nostr-id-tui.service$|/etc/systemd/system/nostr-id-tui-services.service$|/etc/systemd/system/getty@tty1.service.d/n-os-tr-override.conf$|/etc/systemd/system/getty@tty2.service.d/n-os-tr-override.conf$|/etc/systemd/system/multi-user.target.wants/nostr-id-tui.service$|/etc/systemd/system/default.target$|/etc/systemd/system-preset/50-n-os-tr.preset$" || true

mkdir -p "$TMP/rootfs"
unsquashfs -f -d "$TMP/rootfs" "$SQ" \
  etc/systemd/system/nostr-id-tui.service \
  etc/systemd/system/nostr-id-tui-services.service \
  etc/systemd/system/getty@tty1.service.d/n-os-tr-override.conf \
  etc/systemd/system/getty@tty2.service.d/n-os-tr-override.conf \
  etc/systemd/system/default.target \
  etc/systemd/system-preset/50-n-os-tr.preset \
  etc/systemd/system/multi-user.target.wants/nostr-id-tui.service \
  usr/local/sbin/nostr-id-tui >/dev/null

echo "=== Extracted file details ==="
ls -l "$TMP/rootfs/usr/local/sbin/nostr-id-tui"

for f in \
  etc/systemd/system/nostr-id-tui.service \
  etc/systemd/system/nostr-id-tui-services.service \
  etc/systemd/system/getty@tty1.service.d/n-os-tr-override.conf \
  etc/systemd/system/getty@tty2.service.d/n-os-tr-override.conf \
  etc/systemd/system/default.target \
  etc/systemd/system-preset/50-n-os-tr.preset; do
  echo "----- $f -----"
  sed -n '1,220p' "$TMP/rootfs/$f" || true
  echo
 done

if [ -L "$TMP/rootfs/etc/systemd/system/multi-user.target.wants/nostr-id-tui.service" ]; then
  echo "SYMLINK multi-user.target.wants/nostr-id-tui.service -> $(readlink "$TMP/rootfs/etc/systemd/system/multi-user.target.wants/nostr-id-tui.service")"
elif [ -e "$TMP/rootfs/etc/systemd/system/multi-user.target.wants/nostr-id-tui.service" ]; then
  echo "WANTS_ENTRY_EXISTS_NOT_SYMLINK"
  ls -l "$TMP/rootfs/etc/systemd/system/multi-user.target.wants/nostr-id-tui.service"
else
  echo "SYMLINK_MISSING multi-user.target.wants/nostr-id-tui.service"
fi