from hashlib import sha1
from multiprocessing import Queue

# On Windows the monkeypatching of `run_real` below doesn't work like on Linux
# This has the side effect of emitting the UIUpdate in DownloadThread complaining with a TypeError
# So import `legendary.core` and monkeypatch its imported DLManager
import legendary.core
from legendary.core import LegendaryCore as LegendaryCoreReal
from legendary.models.downloading import AnalysisResult
from legendary.models.game import Game, InstalledGame
from legendary.models.manifest import ManifestMeta

from .api_exception import LgndrException, LgndrCoreLogHandler
from .manager import DLManager

legendary.core.DLManager = DLManager


# fmt: off
class LegendaryCore(LegendaryCoreReal):

    def __init__(self, override_config=None, timeout=10.0):
        super(LegendaryCore, self).__init__(override_config=override_config, timeout=timeout)
        self.handler = LgndrCoreLogHandler()
        self.log.addHandler(self.handler)

    # skip_sync defaults to false but since Rare is persistent, skip by default
    # def get_installed_game(self, app_name, skip_sync=True) -> InstalledGame:
    #     return super(LegendaryCore, self).get_installed_game(app_name, skip_sync)

    # FIXME: delete this when legendary merges https://github.com/derrod/legendary/pull/477
    def get_cdn_manifest(self, game, platform='Windows', disable_https=False):
        manifest_urls, base_urls, manifest_hash = self.get_cdn_urls(game, platform)

        if disable_https:
            manifest_urls = [url.replace('https://', 'http://') for url in manifest_urls]

        manifest_bytes = None
        for url in manifest_urls:
            self.log.debug(f'Trying to download manifest from {url} ...')
            r = self.egs.unauth_session.get(url)
            if r.ok:
                manifest_bytes = r.content
                break
            else:
                self.log.warning(f'Unable to download manifest from {url}, trying next one ...')
        if not manifest_bytes:
            raise ValueError('Unable to get manifest data from any CDN URL')

        if sha1(manifest_bytes).hexdigest() != manifest_hash:
            raise ValueError('Manifest sha hash mismatch!')

        return manifest_bytes, base_urls

    def prepare_download(self, game: Game, base_game: Game = None, base_path: str = '',
                         status_q: Queue = None, max_shm: int = 0, max_workers: int = 0,
                         force: bool = False, disable_patching: bool = False,
                         game_folder: str = '', override_manifest: str = '',
                         override_old_manifest: str = '', override_base_url: str = '',
                         platform: str = 'Windows', file_prefix_filter: list = None,
                         file_exclude_filter: list = None, file_install_tag: list = None,
                         dl_optimizations: bool = False, dl_timeout: int = 10,
                         repair: bool = False, repair_use_latest: bool = False,
                         disable_delta: bool = False, override_delta_manifest: str = '',
                         egl_guid: str = '', preferred_cdn: str = None,
                         disable_https: bool = False) -> (DLManager, AnalysisResult, ManifestMeta):
        dlm, analysis, igame = super(LegendaryCore, self).prepare_download(
            game=game, base_game=base_game, base_path=base_path,
            status_q=status_q, max_shm=max_shm, max_workers=max_workers,
            force=force, disable_patching=disable_patching,
            game_folder=game_folder, override_manifest=override_manifest,
            override_old_manifest=override_old_manifest, override_base_url=override_base_url,
            platform=platform, file_prefix_filter=file_prefix_filter,
            file_exclude_filter=file_exclude_filter, file_install_tag=file_install_tag,
            dl_optimizations=dl_optimizations, dl_timeout=dl_timeout,
            repair=repair, repair_use_latest=repair_use_latest,
            disable_delta=disable_delta, override_delta_manifest=override_delta_manifest,
            egl_guid=egl_guid, preferred_cdn=preferred_cdn,
            disable_https=disable_https
        )
        # lk: monkeypatch run_real (the method that emits the stats) into DLManager

        # pylint: disable=E1111
        dlm.run_real = DLManager.run_real.__get__(dlm, DLManager)
        # lk: set the queue for reporting statistics back the UI
        dlm.status_queue = Queue()
        # lk: set the queue to send control signals to the DLManager
        # lk: this doesn't exist in the original class, but it is monkeypatched in
        dlm.signals_queue = Queue()
        return dlm, analysis, igame

    def uninstall_game(self, installed_game: InstalledGame, delete_files=True, delete_root_directory=False):
        try:
            super(LegendaryCore, self).uninstall_game(installed_game, delete_files, delete_root_directory)
        except Exception as e:
            raise e
        finally:
            pass

    def egl_import(self, app_name):
        try:
            super(LegendaryCore, self).egl_import(app_name)
        except LgndrException as ret:
            raise ret
        finally:
            pass

    def egl_export(self, app_name):
        try:
            super(LegendaryCore, self).egl_export(app_name)
        except LgndrException as ret:
            raise ret
        finally:
            pass

    def prepare_overlay_install(self, path=None):
        dlm, analysis_result, igame = super(LegendaryCore, self).prepare_overlay_install(path)
        # lk: monkeypatch status_q (the queue for download stats)
        # pylint: disable=E1111
        dlm.run_real = DLManager.run_real.__get__(dlm, DLManager)
        # lk: set the queue for reporting statistics back the UI
        dlm.status_queue = Queue()
        # lk: set the queue to send control signals to the DLManager
        # lk: this doesn't exist in the original class, but it is monkeypatched in
        dlm.signals_queue = Queue()
        return dlm, analysis_result, igame

# fmt: on