#!/usr/bin/env python
# -*- coding: utf-8 -*-

from __future__ import with_statement

__license__ = 'GPL v3'

# Standard Python modules.
import os, sys, re, hashlib
from calibre_plugins.dedrm.__init__ import PLUGIN_NAME, PLUGIN_VERSION

def WineGetKeys(scriptpath, extension, wineprefix=""):
    import subprocess
    from subprocess import Popen, PIPE, STDOUT

    import subasyncio
    from subasyncio import Process

    if extension == u".k4i":
        import json

    basepath, script = os.path.split(scriptpath)
    print u"{0} v{1}: Running {2} under Wine".format(PLUGIN_NAME, PLUGIN_VERSION, script)

    outdirpath = os.path.join(basepath, u"winekeysdir")
    if not os.path.exists(outdirpath):
        os.makedirs(outdirpath)

    if wineprefix != "" and os.path.exists(wineprefix):
         cmdline = u"WINEPREFIX=\"{2}\" wine python.exe \"{0}\" \"{1}\"".format(scriptpath,outdirpath,wineprefix)
    else:
        cmdline = u"wine python.exe \"{0}\" \"{1}\"".format(scriptpath,outdirpath)
    print u"{0} v{1}: Command line: “{2}”".format(PLUGIN_NAME, PLUGIN_VERSION, cmdline)

    try:
        cmdline = cmdline.encode(sys.getfilesystemencoding())
        p2 = Process(cmdline, shell=True, bufsize=1, stdin=None, stdout=sys.stdout, stderr=STDOUT, close_fds=False)
        result = p2.wait("wait")
    except Exception, e:
        print u"{0} v{1}: Wine subprocess call error: {2}".format(PLUGIN_NAME, PLUGIN_VERSION, e.args[0])
        return []

    winekeys = []
    # get any files with extension in the output dir
    files = [f for f in os.listdir(outdirpath) if f.endswith(extension)]
    for filename in files:
        try:
            fpath = os.path.join(outdirpath, filename)
            with open(fpath, 'rb') as keyfile:
                if extension == u".k4i":
                    new_key_value = json.loads(keyfile.read())
                else:
                    new_key_value = keyfile.read()
            winekeys.append(new_key_value)
        except:
            print u"{0} v{1}: Error loading file {2}".format(PLUGIN_NAME, PLUGIN_VERSION, filename)
            traceback.print_exc()
        os.remove(fpath)
    print u"{0} v{1}: Found and decrypted {2} {3}".format(PLUGIN_NAME, PLUGIN_VERSION, len(winekeys), u"key file" if len(winekeys) == 1 else u"key files")
    return winekeys