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

import BeautifulSoup
import datetime
import dateutil.parser
import dingguo
import email.message
import ioex.datetimeex
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')

    if not 'Namecheap' in html:
        raise Exception()

    doc = BeautifulSoup.BeautifulSoup(html)

    email_date = dateutil.parser.parse(mail['date'])
    order_date = dateutil.parser.parse(
        doc.find(text = re.compile('Order Date:')).findNext(text = re.compile('\d+'))
        ).replace(tzinfo = email_date.tzinfo)
    # ensure timezone is correct
    assert (email_date - order_date) < datetime.timedelta(minutes = 30)

    order = dingguo.Order(
        platform = u'namecheap',
        order_id = doc.find(text = re.compile('Order Number:')).findNext().findNext().text,
        order_date = order_date,
        customer_id = doc.find(text = re.compile('User Name:')).findNext().findNext().text,
        )

    for item_row_tag in doc.find(text = re.compile('TITLE')).findParent('table').findAll('tr')[1:-2]:
        title_tag, quantity_tag, duration_tag, price_tag, subtotal_tag = item_row_tag.findAll('td')
        assert int(quantity_tag.text.replace('&nbsp;', '')) == 1
        item = dingguo.Service(
            name = title_tag.text.replace('\r\n', '').replace('&nbsp;', '').strip(),
            price_brutto = dingguo.Sum.parse_text(price_tag.text.replace('&nbsp;', '')),
            duration = ioex.datetimeex.Duration(
                years = int(duration_tag.text.replace(' year&nbsp;', '')),
                ),
            )
        order.items.append(item)
        fee_tag = subtotal_tag.find('small')
        if fee_tag:
            fee_name, fee_price = fee_tag.text.split('  ')
            order.items.append(dingguo.Service(
                name = '%s %s' % (item.name, fee_name),
                price_brutto = dingguo.Sum.parse_text(fee_price),
                duration = item.duration,
                ))

    total_price = dingguo.Sum.parse_text(
            doc.find(text = re.compile('^TOTAL$')).findNext('strong').text
            )
    assert total_price.value == sum([i.price_brutto.value for i in order.items])

    return [order]