import logging
import datetime

from sqlalchemy import *
from sqlalchemy.exc import DatabaseError
from sqlalchemy.orm import relation, backref, class_mapper, joinedload
from sqlalchemy.orm.session import Session
from sqlalchemy.ext.declarative import declarative_base

from rhodecode.lib.dbmigrate.migrate import *
from rhodecode.lib.dbmigrate.migrate.changeset import *
from rhodecode.lib.utils2 import str2bool

from rhodecode.model.meta import Base
from rhodecode.model import meta
from rhodecode.lib.dbmigrate.versions import _reset_base, notify

log = logging.getLogger(__name__)


def get_by_name(cls, key):
    return cls.query().filter(cls.app_settings_name == key).scalar()


def upgrade(migrate_engine):
    """
    Upgrade operations go here.
    Don't create your own engine; bind migrate_engine to your metadata
    """
    _reset_base(migrate_engine)
    from rhodecode.lib.dbmigrate.schema import db_2_0_0

    # issue fixups
    fixups(db_2_0_0, meta.Session)


def downgrade(migrate_engine):
    meta = MetaData()
    meta.bind = migrate_engine


def fixups(models, _SESSION):
    notify("Fixing default auth modules")
    plugins = "rhodecode.lib.auth_modules.auth_rhodecode"
    opts = []
    ldap_enabled = str2bool(getattr(get_by_name(models.RhodeCodeSetting, "ldap_active"), "app_settings_value", False))
    if ldap_enabled:
        plugins += ",rhodecode.lib.auth_modules.auth_ldap"
        opts.append(("auth_ldap_enabled", "True", "bool"))

    opts.append(
        ("auth_plugins", plugins, "list"),
    )
    opts.append(("auth_rhodecode_enabled", "True", "bool"))

    for name, default, type_ in opts:
        setting = get_by_name(models.RhodeCodeSetting, name)
        if not setting:
            # if we don't have this option create it
            setting = models.RhodeCodeSetting(name, default, type_)

        _SESSION().add(setting)
        _SESSION().commit()

    # copy over the LDAP settings
    old_ldap = [
        ("ldap_active", "false", "bool"),
        ("ldap_host", "", "unicode"),
        ("ldap_port", "389", "int"),
        ("ldap_tls_kind", "PLAIN", "unicode"),
        ("ldap_tls_reqcert", "", "unicode"),
        ("ldap_dn_user", "", "unicode"),
        ("ldap_dn_pass", "", "unicode"),
        ("ldap_base_dn", "", "unicode"),
        ("ldap_filter", "", "unicode"),
        ("ldap_search_scope", "", "unicode"),
        ("ldap_attr_login", "", "unicode"),
        ("ldap_attr_firstname", "", "unicode"),
        ("ldap_attr_lastname", "", "unicode"),
        ("ldap_attr_email", "", "unicode"),
    ]
    for k, v, t in old_ldap:
        old_setting = get_by_name(models.RhodeCodeSetting, k)
        name = "auth_%s" % k
        setting = get_by_name(models.RhodeCodeSetting, name)
        if not setting:
            # if we don't have this option create it
            setting = models.RhodeCodeSetting(name, old_setting.app_settings_value, t)

        _SESSION().add(setting)
        _SESSION().commit()
