#!/bin/bash
set -e

SEVENZIP_BIN="${SEVENZIP_BIN:-7z}"

if [[ $# -ne 1 ]]; then
  echo "Usage: $0 <root_folder>"
  exit 1
fi

ROOT_DIR="$1"
MAIN_DIR="$ROOT_DIR/main"
IW4X_DIR="$ROOT_DIR/iw4x"

OUT_DIR="out"

if [[ ! -d "$MAIN_DIR" || ! -d "$IW4X_DIR" ]]; then
  echo "Error: '$MAIN_DIR' or '$IW4X_DIR' directory not found."
  exit 1
fi

mkdir -p "$OUT_DIR"

process_iwd_files() {
  local folder="$1"
  find "$folder" -type f -iname '*.iwd' | while read -r iwd_file; do
    # Output text file in same dir with same basename
    base_name="$(basename "$iwd_file")"
    output_file="$OUT_DIR/${base_name}.txt"
    echo "Processing $iwd_file -> $output_file"
    "$SEVENZIP_BIN" l -ba "$iwd_file" | grep -oP '(?<=^.{53}).*' > "$output_file"
  done
}

process_iwd_files "$MAIN_DIR"
process_iwd_files "$IW4X_DIR"