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

import BeautifulSoup
import datetime
import dingguo
import email.message
import ioex
import re

def parse_order_confirmation_mail(mail):

    assert isinstance(mail, email.message.Message)

    html = mail.get_payload()[1].get_payload(decode = True).decode('utf-8')
    doc = BeautifulSoup.BeautifulSoup(html)

    """ Your Order#13998883(placed on Saturday 16 April, 2016)"""
    order_attr = re.search(
            ur'Your Order#(?P<id>\d+)\(placed on (?P<date>.*)\)',
            doc.find(text = re.compile(r'placed on')).parent.text,
            re.UNICODE,
            ).groupdict()

    with ioex.setlocale('en_US.UTF-8'):
        order = dingguo.Order(
                platform = u'banggood',
                order_id = order_attr['id'],
                order_date = datetime.datetime.strptime(order_attr['date'], '%A %d %B, %Y').date(),
                customer_id = None,
                )

    """ 1 x 10X E27 LED Bulb 7W Warm White 36 SMD 5730 AC 220V Corn Light (10xPOA162664)€23.431 x 5X E14 7W Warm White 36 SMD 5730 LED Corn Light Lamp Bulbs AC 220V (5xPOA162668)€12.31 """
    articles_text = doc.find(text = re.compile(r'Subtotal of Items')) \
            .parent.parent.text.replace('&nbsp;', ' ') \
            .split('Subtotal of Items:')[1].split('IMPORTANT NOTICE')[0]
    for article_match in re.finditer(
            ur'(?P<quantity>\d+) x (?P<name>[^\(]*) \((\d+x)?(?P<id>[^\)]+)\)'
                + ur'(?P<currency>[^\d]+)(?P<price>\d+.\d\d)(?P<option>((?!\d+ x).)+)?',
            articles_text,
            re.UNICODE,
            ):
        attr = article_match.groupdict()
        order.items.append(dingguo.Article(
            name = attr['name'],
            option = attr['option'],
            price_brutto = dingguo.Sum(
                float(attr['price']) / float(attr['quantity']),
                attr['currency'],
                ),
            product_id = attr['id'],
            quantity = int(attr['quantity']),
            ))

    shipping_line_tag = doc.find(text = re.compile('Sub-Total')).findNext('tr')
    shipping_option_tag, shipping_price_tag = shipping_line_tag.findAll('td')
    order.items.append(dingguo.Shipping(
        name = shipping_option_tag.text,
        price_brutto = dingguo.Sum.parse_text(shipping_price_tag.text),
        ))

    insurance_label_tag = shipping_line_tag.findNext(text = re.compile('Insurance'))
    if insurance_label_tag:
        order.items.append(dingguo.Service(
            name = insurance_label_tag.parent.text,
            price_brutto = dingguo.Sum.parse_text(insurance_label_tag.findNext().text),
            ))

    points_discount_label_tag = doc.find(text = re.compile('Discount Points'))
    if points_discount_label_tag:
        order.discounts.append(dingguo.Discount(
            name = u'redeem %d banggood points' % int(points_discount_label_tag.split(':')[1]),
            amount = dingguo.Sum.parse_text(points_discount_label_tag.findNext().text) * -1,
            ))

    return [order]