#!/bin/bash

# 安装 Image Builder 构建所需依赖
install() {
  apt install -y build-essential libncurses-dev zlib1g-dev gawk git \
    gettext libssl-dev xsltproc rsync wget unzip python3 qemu-utils mkisofs zstd
}

# 下载并解压 x86-64 的 Image Builder
# 参数 1: ImmortalWrt 版本号，例如 25.12.0
# 输出: 解压后的 Image Builder 目录绝对路径
download_imagebuilder() {
  local version="$1"
  local file="immortalwrt-imagebuilder-$version-x86-64.Linux-x86_64.tar.zst"
  local url="https://downloads.immortalwrt.org/releases/$version/targets/x86/64/$file"
  local folder

  wget -q --show-progress -O "$file" "$url" >&2

  folder="$(tar -I zstd -tf "$file" | head -n 1 | cut -d/ -f1)"

  tar -I zstd -xvf "$file" >&2

  echo "$(pwd)/$folder"
}