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

if [[ $# -ne 1 ]]; then
  echo "Usage: $0 /path/to/source.iso"
  exit 1
fi

SOURCE_ISO="$1"

if [[ ! -f "$SOURCE_ISO" ]]; then
  echo "Error: ISO not found: $SOURCE_ISO"
  exit 1
fi

REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BASE_DIR="$(cd "$REPO_DIR/.." && pwd)"
BUILD_DIR="$BASE_DIR/build"
WORK_DIR="$BUILD_DIR/work"

echo "Source ISO: $SOURCE_ISO"
echo "Work dir:   $WORK_DIR"

rm -rf "$WORK_DIR"
mkdir -p "$WORK_DIR"

echo "Extracting ISO contents..."
xorriso -indev "$SOURCE_ISO" -osirrox on -extract / "$WORK_DIR" >/dev/null

echo "Done."