# -*- coding: utf-8 -*-

# Authors:
#   Thomas Woerner <twoerner@redhat.com>
#
# Based on ipa-client-install code
#
# Copyright (C) 2017  Red Hat
# see file 'COPYING' for use and warranty information
#
# 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 3 of the License, or
# (at your option) any later version.
#
# 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/>.

__all__ = ["gssapi", "version", "ipadiscovery", "api", "errors", "x509",
           "constants", "sysrestore", "certmonger", "certstore",
           "delete_persistent_client_session_data", "ScriptError",
           "CheckedIPAddress", "validate_domain_name", "normalize_hostname",
           "validate_hostname", "services", "tasks", "CalledProcessError",
           "write_tmp_file", "ipa_generate_password", "DN", "kinit_keytab",
           "kinit_password", "GSSError", "CLIENT_INSTALL_ERROR",
           "is_ipa_client_installed", "CLIENT_ALREADY_CONFIGURED",
           "nssldap_exists", "remove_file", "check_ip_addresses",
           "print_port_conf_info", "configure_ipa_conf", "purge_host_keytab",
           "configure_sssd_conf", "realm_to_suffix", "run", "timeconf",
           "serialization", "configure_krb5_conf", "get_ca_certs",
           "SECURE_PATH", "get_server_connection_interface",
           "disable_ra", "client_dns",
           "configure_certmonger", "update_ssh_keys",
           "configure_openldap_conf", "hardcode_ldap_server",
           "get_certs_from_ldap", "save_state", "create_ipa_nssdb",
           "configure_nisdomain", "configure_ldap_conf",
           "configure_nslcd_conf", "nosssd_files", "configure_ssh_config",
           "configure_sshd_config", "configure_automount",
           "configure_firefox", "sync_time", "check_ldap_conf",
           "sssd_enable_ifp"]

import sys

# HACK: workaround for Ansible 2.9
# https://github.com/ansible/ansible/issues/68361
if 'ansible.executor' in sys.modules:
    for attr in __all__:
        setattr(sys.modules[__name__], attr, None)

else:
    from ipapython.version import NUM_VERSION, VERSION

    if NUM_VERSION < 30201:
        # See ipapython/version.py
        IPA_MAJOR, IPA_MINOR, IPA_RELEASE = [int(x) for x in
                                             VERSION.split(".", 2)]
        IPA_PYTHON_VERSION = IPA_MAJOR*10000 + IPA_MINOR*100 + IPA_RELEASE
    else:
        IPA_PYTHON_VERSION = NUM_VERSION

    class installer_obj(object):
        def __init__(self):
            pass

        def set_logger(self, logger):
            self.logger = logger

        # def __getattribute__(self, attr):
        #    value = super(installer_obj, self).__getattribute__(attr)
        #    if not attr.startswith("--") and not attr.endswith("--"):
        #        logger.debug(
        #            "  <-- Accessing installer.%s (%s)" % (attr, repr(value)))
        #    return value

        # def __getattr__(self, attr):
        #    # logger.info("  --> ADDING missing installer.%s" % attr)
        #    self.logger.warn("  --> ADDING missing installer.%s" % attr)
        #    setattr(self, attr, None)
        #    return getattr(self, attr)

        # def __setattr__(self, attr, value):
        #    logger.debug("  --> Setting installer.%s to %s" %
        #                 (attr, repr(value)))
        #    return super(installer_obj, self).__setattr__(attr, value)

        def knobs(self):
            for name in self.__dict__:
                yield self, name

    # Initialize installer settings
    installer = installer_obj()
    # Create options
    options = installer
    options.interactive = False
    options.unattended = not options.interactive

    if NUM_VERSION >= 40400:
        # IPA version >= 4.4

        import sys
        import inspect
        import gssapi
        import logging

        from ipapython import version
        try:
            from ipaclient.install import ipadiscovery
        except ImportError:
            from ipaclient import ipadiscovery
        from ipalib import api, errors, x509
        from ipalib import constants
        try:
            from ipalib import sysrestore
        except ImportError:
            try:
                from ipalib.install import sysrestore
            except ImportError:
                from ipapython import sysrestore
        try:
            from ipalib.install import certmonger
        except ImportError:
            from ipapython import certmonger
        try:
            from ipalib.install import certstore
        except ImportError:
            from ipalib import certstore
        from ipalib.rpc import delete_persistent_client_session_data
        from ipapython import certdb, ipautil
        from ipapython.admintool import ScriptError
        from ipapython.ipautil import CheckedIPAddress
        from ipalib.util import validate_domain_name, normalize_hostname, \
            validate_hostname
        from ipaplatform import services
        from ipaplatform.paths import paths
        from ipaplatform.tasks import tasks
        try:
            from cryptography.hazmat.primitives import serialization
        except ImportError:
            serialization = None
        from ipapython.ipautil import CalledProcessError, write_tmp_file, \
            ipa_generate_password
        from ipapython.dn import DN
        try:
            from ipalib.install.kinit import kinit_keytab, kinit_password
        except ImportError:
            from ipapython.ipautil import kinit_keytab, kinit_password
        from ipapython.ipa_log_manager import standard_logging_setup
        from gssapi.exceptions import GSSError
        try:
            from ipaclient.install.client import configure_krb5_conf, \
                get_ca_certs, SECURE_PATH, get_server_connection_interface, \
                disable_ra, client_dns, \
                configure_certmonger, update_ssh_keys, \
                configure_openldap_conf, \
                hardcode_ldap_server, get_certs_from_ldap, save_state, \
                create_ipa_nssdb, configure_ssh_config, \
                configure_sshd_config, \
                configure_automount, configure_firefox, configure_nisdomain, \
                CLIENT_INSTALL_ERROR, is_ipa_client_installed, \
                CLIENT_ALREADY_CONFIGURED, nssldap_exists, remove_file, \
                check_ip_addresses, print_port_conf_info, configure_ipa_conf, \
                purge_host_keytab, configure_sssd_conf, configure_ldap_conf, \
                configure_nslcd_conf, nosssd_files
            get_ca_cert = None
        except ImportError:
            # Create temporary copy of ipa-client-install script (as
            # ipa_client_install.py) to be able to import the script easily
            # and also to remove the global finally clause in which the
            # generated ccache file gets removed. The ccache file will be
            # needed in the next step.
            # This is done in a temporary directory that gets removed right
            # after ipa_client_install has been imported.
            import shutil
            import tempfile
            temp_dir = tempfile.mkdtemp(dir="/tmp")
            sys.path.append(temp_dir)
            temp_file = "%s/ipa_client_install.py" % temp_dir

            with open("/usr/sbin/ipa-client-install", "r") as f_in:
                with open(temp_file, "w") as f_out:
                    for line in f_in:
                        if line.startswith("finally:"):
                            break
                        f_out.write(line)
            import ipa_client_install

            shutil.rmtree(temp_dir, ignore_errors=True)
            sys.path.remove(temp_dir)

            argspec = inspect.getargspec(
                ipa_client_install.configure_krb5_conf)
            if argspec.keywords is None:
                def configure_krb5_conf(
                        cli_realm, cli_domain, cli_server, cli_kdc, dnsok,
                        filename, client_domain, client_hostname, force=False,
                        configure_sssd=True):
                    global options
                    options.force = force
                    options.sssd = configure_sssd
                    return ipa_client_install.configure_krb5_conf(
                        cli_realm, cli_domain, cli_server, cli_kdc, dnsok,
                        options, filename, client_domain, client_hostname)
            else:
                configure_krb5_conf = ipa_client_install.configure_krb5_conf
            if NUM_VERSION < 40100:
                get_ca_cert = ipa_client_install.get_ca_cert
                get_ca_certs = None
            else:
                get_ca_cert = None
                get_ca_certs = ipa_client_install.get_ca_certs
            SECURE_PATH = ("/bin:/sbin:/usr/kerberos/bin:/usr/kerberos/sbin:"
                           "/usr/bin:/usr/sbin")

            get_server_connection_interface = \
                ipa_client_install.get_server_connection_interface
            disable_ra = ipa_client_install.disable_ra
            client_dns = ipa_client_install.client_dns
            configure_certmonger = ipa_client_install.configure_certmonger
            update_ssh_keys = ipa_client_install.update_ssh_keys
            configure_openldap_conf = \
                ipa_client_install.configure_openldap_conf
            hardcode_ldap_server = ipa_client_install.hardcode_ldap_server
            get_certs_from_ldap = ipa_client_install.get_certs_from_ldap
            save_state = ipa_client_install.save_state

            create_ipa_nssdb = certdb.create_ipa_nssdb

            argspec = \
                inspect.getargspec(ipa_client_install.configure_nisdomain)
            if len(argspec.args) == 3:
                configure_nisdomain = ipa_client_install.configure_nisdomain
            else:
                def configure_nisdomain(options, domain, statestore=None):
                    return ipa_client_install.configure_nisdomain(options,
                                                                  domain)

            configure_ldap_conf = ipa_client_install.configure_ldap_conf
            configure_nslcd_conf = ipa_client_install.configure_nslcd_conf
            nosssd_files = ipa_client_install.nosssd_files

            configure_ssh_config = ipa_client_install.configure_ssh_config
            configure_sshd_config = ipa_client_install.configure_sshd_config
            configure_automount = ipa_client_install.configure_automount
            configure_firefox = ipa_client_install.configure_firefox

        from ipapython.ipautil import realm_to_suffix, run

        try:
            from ipaclient.install import timeconf
            time_service = "chronyd"
        except ImportError:
            try:
                from ipaclient.install import ntpconf as timeconf
            except ImportError:
                from ipaclient import ntpconf as timeconf
            time_service = "ntpd"

        try:
            from ipaclient.install.client import sync_time
        except ImportError:
            sync_time = None

        try:
            from ipaclient.install.client import check_ldap_conf
        except ImportError:
            check_ldap_conf = None

        try:
            from ipaclient.install.client import sssd_enable_ifp
        except ImportError:
            sssd_enable_ifp = None

        logger = logging.getLogger("ipa-client-install")
        root_logger = logger

    else:
        # IPA version < 4.4

        raise Exception("freeipa version '%s' is too old" % VERSION)


def setup_logging():
    standard_logging_setup(
        paths.IPACLIENT_INSTALL_LOG, verbose=False, debug=False,
        filemode='a', console_format='%(message)s')


def ansible_module_get_parsed_ip_addresses(ansible_module,
                                           param='ip_addresses'):
    ip_addresses = ansible_module.params.get(param)
    if ip_addresses is None:
        return None

    ip_addrs = []
    for ip in ip_addresses:
        try:
            ip_parsed = ipautil.CheckedIPAddress(ip)
        except Exception as e:
            ansible_module.fail_json(msg="Invalid IP Address %s: %s" % (ip, e))
        ip_addrs.append(ip_parsed)
    return ip_addrs
