#!/usr/bin/env python3
#
# Copyright (C) 2023 KeePassXC Team <team@keepassxc.org>
#
# This program is free software: you can redistribute it and/or modify
# it # under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 or (at your option)
# version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import argparse
import ctypes
from datetime import datetime
import logging
import os
import platform
import shutil
import subprocess
import sys


###########################################################################################
#                                       Globals
###########################################################################################


RELEASE_NAME = None
APP_NAME = 'KeePassXC'
SRC_DIR = os.getcwd()
GPG_KEY = 'BF5A669F2272CF4324C1FDA8CFB4C2166397D0D2'
GPG_GIT_KEY = None
OUTPUT_DIR = 'release'
ORIG_GIT_BRANCH = None
SOURCE_BRANCH = None
TAG_NAME = None
DOCKER_IMAGE = None
DOCKER_CONTAINER_NAME = 'keepassxc-build-container'
CMAKE_OPTIONS = []
CPACK_GENERATORS = 'WIX;ZIP'
COMPILER = 'g++'
MAKE_OPTIONS = f'-j{os.cpu_count()}'
BUILD_PLUGINS = 'all'
INSTALL_PREFIX = '/usr/local'
MACOSX_DEPLOYMENT_TARGET = '10.15'
TIMESTAMP_SERVER = 'http://timestamp.sectigo.com'


###########################################################################################
#                                   Errors and Logging
###########################################################################################


class Error(Exception):
    def __init__(self, msg, *args, **kwargs):
        self.msg = msg
        self.args = args
        self.kwargs = kwargs
        self.__dict__.update(kwargs)


class SubprocessError(Error):
    pass


class LogFormatter(logging.Formatter):
    _CLR = 'color' in os.getenv('TERM', '') or 'CLICOLOR_FORCE' in os.environ or sys.platform == 'win32'

    BOLD = '\x1b[1m' if _CLR else ''
    RED = '\x1b[31m' if _CLR else ''
    BRIGHT_RED = '\x1b[91m' if _CLR else ''
    YELLOW = '\x1b[33m' if _CLR else ''
    BLUE = '\x1b[34m' if _CLR else ''
    GREEN = '\x1b[32m' if _CLR else ''
    END = '\x1b[0m' if _CLR else ''

    _FMT = {
        logging.DEBUG: f'{BOLD}[%(levelname)s{END}{BOLD}]{END} %(message)s',
        logging.INFO: f'{BOLD}[{BLUE}%(levelname)s{END}{BOLD}]{END} %(message)s',
        logging.WARNING: f'{BOLD}[{YELLOW}%(levelname)s{END}{BOLD}]{END}{YELLOW} %(message)s{END}',
        logging.ERROR: f'{BOLD}[{RED}%(levelname)s{END}{BOLD}]{END}{RED} %(message)s{END}',
        logging.CRITICAL: f'{BOLD}[{BRIGHT_RED}%(levelname)s{END}{BOLD}]{END}{BRIGHT_RED} %(message)s{END}',
    }

    def format(self, record):
        return logging.Formatter(self._FMT.get(record.levelno)).format(record)


console_handler = logging.StreamHandler()
console_handler.setFormatter(LogFormatter())
logger = logging.getLogger(__file__)
logger.setLevel(os.getenv('LOGLEVEL') if 'LOGLEVEL' in os.environ else logging.INFO)
logger.addHandler(console_handler)


###########################################################################################
#                                      Helper Functions
###########################################################################################


def _run(cmd, *args, input=None, capture_output=True, timeout=None, check=False, **kwargs):
    """
    Run a command and return its output.
    Raises an error if ``check`` is ``True`` and the process exited with a non-zero code.
    """
    if not cmd:
        raise ValueError('Empty command given.')
    try:
        return subprocess.run(
            cmd, *args, input=input, capture_output=capture_output, timeout=timeout, check=check, **kwargs)
    except FileNotFoundError:
        raise Error('Command not found: %s', cmd[0] if type(cmd) in [list, tuple] else cmd)
    except subprocess.CalledProcessError as e:
        if e.stderr:
            raise SubprocessError('Command \'%s\' exited with non-zero code. Error: %s',
                                  cmd[0], e.stderr, **e.__dict__)
        else:
            raise SubprocessError('Command \'%s\' exited with non-zero code.', cmd[0], **e.__dict__)


def _cmd_exists(cmd):
    """Check if command exists."""
    return shutil.which(cmd) is not None


def _git_get_branch():
    """Get current Git branch."""
    branch = _run(['git', 'rev-parse', '--abbrev-ref', 'HEAD'], check=True).stdout.decode()
    global ORIG_GIT_BRANCH
    if not ORIG_GIT_BRANCH:
        ORIG_GIT_BRANCH = branch
    return branch


def _git_checkout(branch):
    """Check out Git branch."""
    try:
        _run(['git', 'checkout', branch], check=True)
    except SubprocessError as e:
        raise Error('Failed to check out branch \'%s\'. %s', branch, e.stderr.decode().capitalize())


def _cleanup():
    """Post-execution cleanup."""
    try:
        if ORIG_GIT_BRANCH:
            logger.info('Checking out original branch...')
            # _git_checkout(ORIG_GIT_BRANCH)
        return 0
    except Exception as e:
        logger.critical('Exception occurred during cleanup:', exc_info=e)
        return 1


###########################################################################################
#                                      CLI Commands
###########################################################################################


class Command:
    """Command base class."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


class Check(Command):
    """Perform a dry-run check, nothing is changed."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, version):
        print(version)


class Merge(Command):
    """Merge release branch into main branch and create release tags."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        parser.add_argument('version', help='Release version number or name')

    def run(self, version):
        print(version)


class Build(Command):
    """Build and package binary release from sources."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


class GPGSign(Command):
    """Sign previously compiled release packages with GPG."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


class AppSign(Command):
    """Sign binaries with code signing certificates on Windows and macOS."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


class Notarize(Command):
    """Submit macOS application DMG for notarization."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


class I18N(Command):
    """Update translation files and pull from or push to Transifex."""

    @classmethod
    def setup_arg_parser(cls, parser: argparse.ArgumentParser):
        pass

    def run(self, **kwargs):
        pass


###########################################################################################
#                                       CLI Main
###########################################################################################


def main():
    if sys.platform == 'win32':
        # Enable terminal colours
        ctypes.windll.kernel32.SetConsoleMode(ctypes.windll.kernel32.GetStdHandle(-11), 7)

    sys.stderr.write(f'{LogFormatter.BOLD}{LogFormatter.GREEN}KeePassXC{LogFormatter.END}'
                     f'{LogFormatter.BOLD} Release Preparation Tool{LogFormatter.END}\n')
    sys.stderr.write(f'Copyright (C) 2016-{datetime.now().year} KeePassXC Team <https://keepassxc.org/>\n\n')

    parser = argparse.ArgumentParser(add_help=True)
    subparsers = parser.add_subparsers(title='commands')
    subparsers.required = True

    check_parser = subparsers.add_parser('check', help=Check.__doc__)
    Check.setup_arg_parser(check_parser)
    check_parser.set_defaults(_cmd=Check)

    merge_parser = subparsers.add_parser('merge', help=Merge.__doc__)
    Merge.setup_arg_parser(merge_parser)
    merge_parser.set_defaults(_cmd=Merge)

    build_parser = subparsers.add_parser('build', help=Build.__doc__)
    Build.setup_arg_parser(build_parser)
    build_parser.set_defaults(_cmd=Build)

    gpgsign_parser = subparsers.add_parser('gpgsign', help=GPGSign.__doc__)
    Merge.setup_arg_parser(gpgsign_parser)
    gpgsign_parser.set_defaults(_cmd=GPGSign)

    appsign_parser = subparsers.add_parser('appsign', help=AppSign.__doc__)
    AppSign.setup_arg_parser(appsign_parser)
    appsign_parser.set_defaults(_cmd=AppSign)

    notarize_parser = subparsers.add_parser('notarize', help=Notarize.__doc__)
    Notarize.setup_arg_parser(notarize_parser)
    notarize_parser.set_defaults(cm_cmdd=Notarize)

    i18n_parser = subparsers.add_parser('i18n', help=I18N.__doc__)
    I18N.setup_arg_parser(i18n_parser)
    i18n_parser.set_defaults(_cmd=I18N)

    args = parser.parse_args()
    args._cmd().run(**{k: v for k, v in vars(args).items() if k is not '_cmd'})


if __name__ == '__main__':
    ret = 0
    try:
        main()
    except Error as e:
        logger.error(e.msg, *e.args, extra=e.kwargs)
        ret = 1
    except KeyboardInterrupt:
        logger.warning('Process interrupted.')
        ret = 3
    except SystemExit as e:
        ret = e.code
    except Exception as e:
        logger.critical('Unhandled exception:', exc_info=e)
        ret = 4
    finally:
        ret |= _cleanup()
        sys.exit(ret)