#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Name:     distro.py
# Purpose:  Module to detect if distro types supported by multibootusb (by extracting specific files)
# Authors:  Sundar
# Licence:  This file is a part of multibootusb package. You can redistribute it or modify
# under the terms of GNU General Public License, v.2 or above

import os
import platform
import re
from .iso import *
from .isodump3 import ISO9660
from .gen import *
from . import _7zip


def distro(iso_cfg_ext_dir, iso_link, expose_exception=False):
    """
    Detect if distro is supported by multibootusb.
    :param iso_cfg_ext_dir: Directory where *.cfg files are extracted.
    :return: Detected distro name as string.
    """
#     iso9660fs = ISO9660(iso_link)
#     iso_file_list = iso9660fs.readDir("/")
    iso_file_list = _7zip.list_iso(iso_link, expose_exception=expose_exception)
    if platform.system() == "Linux" or platform.system() == "Windows":
        for path, subdirs, files in os.walk(iso_cfg_ext_dir):
            for name in files:
                if name.endswith(('.cfg', '.CFG', '.txt', '.TXT', '.lst')):
                    try:
                        # errors='ignore' is required as some files also contain non utf character
                        string = open(os.path.join(path, name), errors='ignore').read()
                    except IOError:
                        return "Read Error."
                    else:
                        if any("f4ubcd" in s.lower() for s in iso_file_list):
                            return "f4ubcd"
                        if re.search(r'ubcd', string, re.I):
                            return "ubcd"
                        elif re.search(r'Super Grub Disk', string, re.I):
                            return "sgrubd2"
                        elif re.search(r'hbcd', string, re.I):
                            return "hbcd"
                        elif re.search(r'systemrescuecd', string, re.I):
                            return "systemrescuecd"
                        elif re.search(r'pmagic|partedmagic', string, re.I) and isolinux_bin_exist(iso_link):
                            return "parted-magic"
                        elif re.search(r'mgalive', string, re.I):  # mounting fat filesystem hard coded in to initrd.
                            # Can be modified only under linux.
                            return "mageialive"
                        elif re.search(r'archisolabel|misolabel|parabolaisolabel', string, re.I):
                            return "arch"
                        elif re.search(r'chakraisolabel', string, re.I):
                            return "chakra"
                        elif re.search(r'kdeosisolabel', string, re.I):
                            return "kaos"
                        elif re.search(r'boot=live', string, re.I) and isolinux_bin_exist(iso_link):
                            return "debian"
                        elif re.search(r'grml', string, re.I) and re.search(r'live-media-path=', string, re.I):
                            return "grml"
                        elif re.search(r'debian-installer', string, re.I) and not any("casper" in s.lower() for s in iso_file_list):
                            return "debian-install"
                        elif re.search(r'solydx', string, re.I):
                            return "solydx"
                        elif re.search(r'knoppix', string, re.I):
                            return "knoppix"
                        elif re.search(r'root=live:CDLABEL=', string, re.I) or re.search(r'root=live:LABEL=', string, re.I):
                            return "fedora"
                        elif re.search(r'redcore', string, re.I):
                            return "fedora"
                        elif re.search(r'redhat', string, re.I):
                            return "redhat"
                        elif re.search(
                                r'slitaz|dban |ophcrack|tinycore|rescue.cpi|xpud|untangle|4mlinux|partition wizard|android-x86.png|'
                                r'riplinux|lebel dummy|http://pogostick.net/~pnh/ntpasswd/|AVG Rescue CD|AntivirusLiveCD|'
                                r'lkrn|Nanolinux|OSForensics|acentos', string, re.I):  # acentos is a text found in slitaz distro
                            return "slitaz"
                        elif re.search(r'minimal Slackware|Slackware-HOWTO', string, re.I):
                            # for minimal slackware detection
                            return "slitaz"
                        # elif re.search(r'suse', string, re.I):
                        #   return "suse"
                        elif re.search(r'class opensuse', string, re.I):
                            return "opensuse-install"
                        elif re.search(r'boot=casper', string, re.I):
                            return "ubuntu"
                        elif re.search(r'wifislax', string, re.I):
                            return "wifislax"
                        elif re.search(r'slax', string, re.I):
                            return "slax"
                        elif re.search(r'sms.jpg|vector |autoexec', string, re.I) and isolinux_bin_exist(iso_link):
                            return "sms"
                        elif re.search(r'antix', string, re.I):
                            return "antix"
                        elif re.search(r'porteus', string, re.I):
                            return "porteus"
                        elif re.search(r'livecd=livecd|PCLinuxOS', string, re.I):
                            return "pclinuxos"
                        elif re.search(r'looptype=squashfs|http://dee.su/liberte', string, re.I):
                            return "gentoo"
                        elif re.search(r'finnix', string, re.I):
                            return "finnix"
                        elif re.search(r'wifiway', string, re.I):
                            return "wifiway"
                        elif re.search(r'puppy|quirky|fatdog|slacko|xenialpup', string, re.I):
                            return "puppy"
                        elif re.search(r'ipcop', string, re.I):
                            return "ipcop"
                        elif re.search(r'ipfire', string, re.I):
                            return "ipfire"
                        elif re.search(r'zenwalk|slack|salix', string, re.I) and re.search(r'live', string, re.I):
                            return "salix-live"
                        elif re.search(r'zenwalk|slack|salix', string, re.I) and not re.search(r'slacko', string, re.I):
                            return "zenwalk"
                        elif re.search(r'ubuntu server', string, re.I):
                            return "ubuntu-server"
                        elif re.search(r'root=live:CDLABEL=CentOS',
                                        string, re.I):
                            return 'centos' # centos-live
                        elif re.search(r'Install CentOS', string, re.I):
                            return "centos-install"
                        elif re.search(r'CentOS', string, re.I):
                            return "centos"
                        elif re.search(r'Trinity Rescue Kit', string, re.I):
                            return "trinity-rescue"
                        elif re.search(r'alpine', string, re.I):
                            return "alpine"
                        elif re.search(r'http://support.kaspersky.com', string, re.I):
                            return "kaspersky"
                        elif re.search(r'ALT Linux', string, re.I):
                            return "alt-linux"
                        elif re.search(r'Sergei Strelec', string, re.I):
                            return "Windows"
                        elif re.search(r'ReactOS', string, re.I):
                            return "ReactOS"
                        elif re.search(r'fsecure', string, re.I):
                            return "fsecure"
                        elif re.search(r'default rwp', string, re.I):
                            return "pc-unlocker"
                        elif re.search(r'/system/stage1', string, re.I):
                            return 'pc-tool'
                        elif re.search(r'vba32rescue', string, re.I):
                            return 'grub2only'
                        elif re.search(r'BOOT_IMAGE=rising', string, re.I):
                            return 'rising-av'
                        elif re.search(r'Avira Rescue System', string, re.I):
                            return 'Avira-RS'
                        elif any("alpine-release" in s.lower() for s in iso_file_list):
                            return 'alpine'
                        elif re.search(r'BOOT_IMAGE=insert', string, re.I):
                            return 'insert'

        distro = detect_iso_from_file_list(iso_link, iso_file_list)

        if distro:
            return distro
            # FIXME: See the below comments.
#             else:
#                 # FIXME: The idea of detecting as generic is to work like a unetbootin if other methods fails.
#                 #  This simply extracts distro to root of the USB and install syslinux on isolinux.bin directory.
#                 #  All works fine but unable to boot the distro successfully. Also, see the generic section from
#                 #  syslinux, update_cfg and install_distro modules.
#                 if self.isolinux_bin_exist():
#                     return "generic"
        elif str(iso_link).lower().endswith('.iso'):
            return 'memdisk_iso'
        elif str(iso_link).lower().endswith('.img'):
            return 'memdisk_img'
        else:
            return None


def detect_iso_from_file_list(iso_link, iso_file_list):
    """
    Fallback detection script from the content of an ISO.
    :return: supported distro as string
    """
    if os.path.exists(iso_link):
        if any("sources" in s.lower() for s in iso_file_list) and any("boot.wim" in s.lower() for s in iso_file_list):
            return "Windows"
        elif any("config.isoclient" in s.lower() for s in iso_file_list):
            return "opensuse"
        elif any("dban" in s.lower() for s in iso_file_list):
            return "slitaz"
        elif any("memtest.img" in s.lower() for s in iso_file_list):
            return "memtest"
        elif any("mt86.png" in s.lower() for s in iso_file_list) and any("isolinux" in s.lower() for s in iso_file_list):
            return 'raw_iso'
        elif any("menu.lst" in s.lower() for s in iso_file_list):
            return "grub4dos"
        elif any("bootwiz.cfg" in s.lower() for s in iso_file_list) and any("bootmenu_logo.png" in s.lower() for s in iso_file_list):
            return "grub4dos_iso"
        else:
            log(iso_file_list)

if __name__ == '__main__':
    iso_cfg_ext_dir = os.path.join(multibootusb_host_dir(), "iso_cfg_ext_dir")
    iso_link = 'Downloads/clonezilla-live-2.4.2-32-amd64.iso'
    iso_extract_file(iso_link, iso_cfg_ext_dir, 'cfg')
    log(distro(iso_cfg_ext_dir))