import logging
from decimal import Decimal
from django.conf import settings
from django.db.models import Q

from measurement.measures import Weight

from core.xps import get_quote
from core.models import (
    ShippingRate,
    SiteSettings,
)
from core import (
    ShippingService,
    ShippingProvider,
    ShippingContainer
)

logger = logging.getLogger(__name__)


def get_shipping_container_choices_from_weight(weight):
    is_selectable = Q(
        is_selectable=True
    )
    min_weight_matched = Q(
        min_order_weight__lte=weight) | Q(
        min_order_weight__isnull=True
    )
    max_weight_matched = Q(
        max_order_weight__gte=weight) | Q(
        max_order_weight__isnull=True
    )
    containers = ShippingRate.objects.filter(
        is_selectable & min_weight_matched & max_weight_matched
    )
    return containers


def get_shipping_container_from_choices(choices):
    if len(choices) == 0:
        return SiteSettings.load().default_shipping_rate.container
    return choices[0].container

# - A 48 36
# - B 80 48 60 72 64 80 96
# - Small mailing box: 12 24 16 32
# - Shoe box: 48 64
# - Large flat rate box: 96 128



def get_shipping_cost(total_weight, postal_code):
    if not total_weight > Weight(lb=0):
        return Decimal('0.00')

    container = "box_a"
    if total_weight <= Weight(lb=3):
        container = "box_a"
    elif total_weight <= Weight(lb=6):
        container = "box_b"
    else:
        container = "large_flat_rate_box"

    shipping_cost = get_quote(postal_code, str(total_weight.lb), container)

    return Decimal(shipping_cost)


def build_usps_rate_request(weight, container, zip_destination):
    service = ShippingContainer.get_shipping_service_from_container(container)
    return \
        {
            'service': service,
            'zip_origination': SiteSettings.load().default_zip_origination,
            'zip_destination': zip_destination,
            'pounds': weight,
            'ounces': '0',
            'container': container,
            'width': '',
            'length': '',
            'height': '',
            'girth': '',
            'machinable': 'TRUE'
        }