#!/usr/bin/env python
#
# Copyright (C) 2018 Linus Jahn <lnj@kaidan.im>
# Copyright (C) 2019 Hiroshi Miura <miurahr@linux.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

import requests
import traceback
import xml.etree.ElementTree as ElementTree
from logging import getLogger
from six import StringIO


class QtPackage:
    name = ""
    url = ""
    archive = ""
    desc = ""
    mirror = None

    def __init__(self, name, archive_url, archive, package_desc, has_mirror=False):
        self.name = name
        self.url = archive_url
        self.archive = archive
        self.desc = package_desc
        self.has_mirror = has_mirror


class QtArchives:
    BASE_URL = 'https://download.qt.io/online/qtsdkrepository/'
    archives = []
    base = None

    def __init__(self, os_name, qt_version, target, arch, mirror=None, logging=None):
        self.qt_version = qt_version
        self.target = target
        self.arch = arch
        if mirror is not None:
            self.has_mirror = True
            self.base = mirror + '/online/qtsdkrepository/'
        else:
            self.base = self.BASE_URL
        if logging:
            self.logger = logging
        else:
            self.logger = getLogger('aqt')
        self._get_archives(os_name)

    def _get_archives(self, os_name):
        qt_ver_num = self.qt_version.replace(".", "")

        # install mingw runtime package
        if self.arch in ['win64_mingw73', 'win32_mingw73', 'win64_mingw53', 'win32_mingw53']:
            archive_url = self.base + 'windows_x86/desktop/tools_mingw/'
            update_xml_url = "{0}Updates.xml".format(archive_url)
            try:
                r = requests.get(update_xml_url)
            except requests.exceptions.ConnectionError as e:
                print("Caught download error: %s" % e.args)
                exc_buffer = StringIO()
                traceback.print_exc(file=exc_buffer)
                self.logger.error('Download error:\n%s', exc_buffer.getvalue())
                raise e
            else:
                self.update_xml = ElementTree.fromstring(r.text)
                for packageupdate in self.update_xml.iter("PackageUpdate"):
                    name = packageupdate.find("Name").text
                    if name.split(".")[-1] != self.arch:
                        continue
                    downloadable_archives = packageupdate.find("DownloadableArchives").text.split(", ")
                    full_version = packageupdate.find("Version").text
                    split_version = full_version.split["-"]
                    named_version = split_version[0] + "-" + split_version[1]
                    package_desc = packageupdate.find("Description").text
                    for archive in downloadable_archives:
                        # ex. 7.3.0-1x86_64-7.3.0-release-posix-seh-rt_v5-rev0.7z
                        package_url = archive_url + name + "/" + named_version + archive
                        self.archives.append(QtPackage(name, package_url, archive, package_desc,
                                                       has_mirror=(self.mirror is not None)))
        # Ordinary packages
        if os_name == 'windows':
            archive_url = self.base + os_name + '_x86/' + self.target + '/' + 'qt5_' + qt_ver_num + '/'
        else:
            archive_url = self.base + os_name + '_x64/' + self.target + '/' + 'qt5_' + qt_ver_num + '/'

        # Get packages index
        update_xml_url = "{0}Updates.xml".format(archive_url)
        try:
            r = requests.get(update_xml_url)
        except requests.exceptions.ConnectionError as e:
            print("Caught download error: %s" % e.args)
            exc_buffer = StringIO()
            traceback.print_exc(file=exc_buffer)
            self.logger.error('Download error:\n%s', exc_buffer.getvalue())
            raise e
        else:
            self.update_xml = ElementTree.fromstring(r.text)
            for packageupdate in self.update_xml.iter("PackageUpdate"):
                name = packageupdate.find("Name").text
                if name.split(".")[-1] != self.arch:
                    continue
                if name.split(".")[-2] == "debug_info":
                    continue
                if packageupdate.find("DownloadableArchives").text is None:
                    continue
                if name == "qt.qt5.{}.{}".format(qt_ver_num, self.arch) or name == "qt.{}.{}".format(qt_ver_num, self.arch):
                    # basic packages
                    pass
                else:
                    # optional packages: FIXME: check option whether install or not
                    pass
                downloadable_archives = packageupdate.find("DownloadableArchives").text.split(", ")
                full_version = packageupdate.find("Version").text
                package_desc = packageupdate.find("Description").text
                for archive in downloadable_archives:
                    package_url = archive_url + name + "/" + full_version + archive
                    self.archives.append(QtPackage(name, package_url, archive, package_desc,
                                                   has_mirror=self.has_mirror))

        if len(self.archives) == 0:
            print("Error while parsing package information!")
            exit(1)

    def get_archives(self):
        return self.archives

    def get_target_config(self):
        return self.qt_version, self.target, self.arch