# -*- coding: utf-8 -*-
#
import traceback
from werkzeug.local import LocalProxy
from contextlib import contextmanager

from common.local import thread_local
from .models import Organization


def get_org_from_request(request):
    oid = request.session.get("oid")
    if not oid:
        oid = request.META.get("HTTP_X_JMS_ORG")

    request_params_oid = request.GET.get("oid")
    if request_params_oid:
        oid = request.GET.get("oid")

    if not oid:
        oid = Organization.DEFAULT_ID
    if oid.lower() == "default":
        oid = Organization.DEFAULT_ID
    elif oid.lower() == "root":
        oid = Organization.ROOT_ID
    org = Organization.get_instance(oid)
    return org


def set_current_org(org):
    if isinstance(org, str):
        org = Organization.get_instance(org)
    setattr(thread_local, 'current_org_id', org.id)


def set_to_default_org():
    set_current_org(Organization.default())


def set_to_root_org():
    set_current_org(Organization.root())


def _find(attr):
    return getattr(thread_local, attr, None)


def get_current_org():
    org_id = get_current_org_id()
    if org_id is None:
        return None
    org = Organization.get_instance(org_id)
    return org


def get_current_org_id():
    org_id = _find('current_org_id')
    return org_id


def get_current_org_id_for_serializer():
    org_id = get_current_org_id()
    if org_id == Organization.DEFAULT_ID:
        org_id = ''
    return org_id


@contextmanager
def tmp_to_root_org():
    ori_org = get_current_org()
    set_to_root_org()
    yield
    if ori_org is not None:
        set_current_org(ori_org)


@contextmanager
def tmp_to_org(org):
    ori_org = get_current_org()
    set_current_org(org)
    yield
    if ori_org is not None:
        set_current_org(ori_org)


def get_org_filters():
    kwargs = {}

    _current_org = get_current_org()
    if _current_org is None:
        return kwargs

    if _current_org.is_real():
        kwargs['org_id'] = _current_org.id
    elif _current_org.is_default():
        kwargs["org_id"] = ''
    return kwargs


def filter_org_queryset(queryset):
    kwargs = get_org_filters()

    #
    # lines = traceback.format_stack()
    # print(">>>>>>>>>>>>>>>>>>>>>>>>>>>>")
    # for line in lines[-10:-1]:
    #     print(line)
    # print("<<<<<<<<<<<<<<<<<<<<<<<<<<<<")
    queryset = queryset.filter(**kwargs)
    return queryset


current_org = LocalProxy(get_current_org)