import ctypes
import logging
import os
import shutil
import sys
import threading
import time
import traceback
import webbrowser
import requests
from io import BytesIO
from threading import Thread
from zipfile import ZipFile

from uuid import uuid1
from hashlib import md5

from win32com.client import Dispatch
from win32comext.shell import shell, shellcon

import fishy
import winshell

from fishy import web


def not_implemented():
    logging.error("Not Implemented")


def empty_function():
    pass


def wait_until(func):
    while not func():
        time.sleep(0.1)


def sign(x):
    return -1 if x < 0 else 1


def open_web(website):
    """
    Opens a website on browser,
    uses multi-threading so that current thread doesnt get blocked
    :param website: url
    """
    logging.debug("opening web, please wait...")
    Thread(target=lambda: webbrowser.open(website, new=2)).start()


def initialize_uid():
    from .config import config

    if config.get("uid") is not None:
        return

    new_uid = web.register_user()
    if new_uid is not None:
        config.set("uid", new_uid)
    else:
        logging.error("Couldn't register uid, some features might not work")


def _create_new_uid():
    """
    Creates a unique id for user
    """
    return md5(str(uuid1()).encode()).hexdigest()


def install_thread_excepthook():
    """
    Workaround for sys.excepthook thread bug
    https://bugs.python.org/issue1230540
    (https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1230540&group_id=5470).
    Call once from __main__ before creating any threads.
    If using psyco, call psycho.cannotcompile(threading.Thread.run)
    since this replaces a new-style class method.
    """
    run_old = threading.Thread.run

    # noinspection PyBroadException
    def run(*args, **kwargs):
        try:
            run_old(*args, **kwargs)
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception:
            sys.excepthook(*sys.exc_info())

    threading.Thread.run = run


def unhandled_exception_logging(*exc_info):
    text = "".join(traceback.format_exception(*exc_info))
    logging.error("Unhandled exception: %s", text)


def manifest_file(rel_path):
    """
    returns a file from the manifest files,
    used to get the files which are installed along with the scripts
    :param rel_path: relative path from `__init__.py`
    :return: abs path of the file
    """
    return os.path.join(os.path.dirname(fishy.__file__), rel_path)


def create_shortcut_first():
    from .config import config

    if not config.get("shortcut_created", False):
        create_shortcut(False)
        config.set("shortcut_created", True)


# noinspection PyBroadException
def create_shortcut(anti_ghosting: bool):
    """
    creates a new shortcut on desktop
    """
    try:
        desktop = winshell.desktop()
        path = os.path.join(desktop, "Fishybot ESO.lnk")

        shell = Dispatch('WScript.Shell')
        shortcut = shell.CreateShortCut(path)

        if anti_ghosting:
            shortcut.TargetPath = r"C:\Windows\System32\cmd.exe"
            python_dir = os.path.join(os.path.dirname(sys.executable), "pythonw.exe")
            shortcut.Arguments = f"/C start /affinity 1 /low {python_dir} -m fishy"
        else:
            shortcut.TargetPath = os.path.join(os.path.dirname(sys.executable), "python.exe")
            shortcut.Arguments = "-m fishy"

        shortcut.IconLocation = manifest_file("icon.ico")
        shortcut.save()

        logging.info("Shortcut created")
    except Exception:
        traceback.print_exc()
        logging.error("Couldn't create shortcut")


def get_addondir():
    # noinspection PyUnresolvedReferences
    from win32com.shell import shell, shellcon
    documents = shell.SHGetFolderPath(0, shellcon.CSIDL_PERSONAL, None, 0)
    return os.path.join(documents, "Elder Scrolls Online", "live", "Addons")        


def addon_exists(name, url=None, v=None):
    return os.path.exists(os.path.join(get_addondir(), name))


def get_addonversion(name, url=None, v=None):
    if addon_exists(name):
        txt = name + ".txt"
        try:
            with open(os.path.join(get_addondir(), name, txt)) as f:
                for line in f:
                    if "AddOnVersion" in line:
                        return int(line.split(' ')[2])
        except Exception:
            pass
    return 0


# noinspection PyBroadException
def install_addon(name, url, v=None):
    try:
        r = requests.get(url, stream=True)
        z = ZipFile(BytesIO(r.content))
        z.extractall(path=get_addondir())
        logging.info("Add-On "+name+" installed successfully!\nPlease make sure to enable \"Allow outdated addons\" in ESO")
        return 0
    except Exception as ex:
        logging.error("Could not install Add-On "+name+", try doing it manually")
        return 1


def remove_addon(name, url=None, v=None):
    try:
        shutil.rmtree(os.path.join(get_addondir(), name))
        logging.info("Add-On "+name+" removed!")
    except FileNotFoundError:
        pass
    except PermissionError as ex:
        logging.error("Fishy has no permission to remove "+name+" Add-On")
        return 1
    return 0


def get_documents():
    return shell.SHGetFolderPath(0, shellcon.CSIDL_PERSONAL, None, 0)


def restart():
    os.execl(sys.executable, *([sys.executable] + sys.argv))


def log_raise(msg):
    logging.error(msg)
    raise Exception(msg)


def update():
    from .config import config

    config.delete("dont_ask_update")
    restart()


# noinspection PyProtectedMember,PyUnresolvedReferences
def _get_id(thread):
    # returns id of the respective thread
    if hasattr(thread, '_thread_id'):
        return thread._thread_id
    for id, thread in threading._active.items():
        if thread is thread:
            return id


def kill_thread(thread):
    thread_id = _get_id(thread)
    res = ctypes.pythonapi.PyThreadState_SetAsyncExc(thread_id,
                                                     ctypes.py_object(SystemExit))
    if res > 1:
        ctypes.pythonapi.PyThreadState_SetAsyncExc(thread_id, 0)
        print('Exception raise failure')