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

import BeautifulSoup
import datetime
import dateutil.parser
import dingguo
import email.message
import ioex
import pytz
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 'indiegogo' in html:
        raise Exception()

    email_recipient_address = mail['delivered-to'].decode('utf8')
    email_date = dateutil.parser.parse(mail['date'])
    order = dingguo.Order(
        platform = u'indiegogo',
        order_id = '%s-%sZ' % (
            email_recipient_address,
            email_date.astimezone(pytz.utc).replace(tzinfo = None).isoformat(),
            ),
        order_date = email_date,
        customer_id = email_recipient_address,
        )

    doc = BeautifulSoup.BeautifulSoup(html)

    campaign_name_tag = doc.find(text = re.compile(u'vielen Dank für deinen Beitrag')).findNext('a')
    reward_label_tag = doc.find(text = re.compile(u'Perk:'))

    order.items.append(dingguo.Contribution(
        campaign = dingguo.Campaign(
            name = campaign_name_tag.text,
            founder = doc.find(text = re.compile(u'Kontaktiere den Kampagnenstarter')).findNext().text,
            website_url = campaign_name_tag['href'],
            ),
        price_brutto = dingguo.Sum.parse_text(
            doc.find(text = re.compile(u'Unterstützung:')).findNext().text
            ),
        reward = reward_label_tag.findNext().text if reward_label_tag else None,
        ))

    shipping_costs_label_tag = doc.find(text = re.compile(u'Versand:'))
    if shipping_costs_label_tag:
        with ioex.setlocale('de_AT.utf8'):
            estimated_arrival_start = datetime.datetime.strptime(
                    doc.find(text = re.compile('Voraussichtliche Lieferung:')).findNext().text,
                    '%B %Y'
                    ).replace(tzinfo = email_date.tzinfo)
        order.items.append(dingguo.Shipping(
            price_brutto = dingguo.Sum.parse_text(
                shipping_costs_label_tag.findNext().text
                ),
            estimated_arrival_time = ioex.datetimeex.Period(
                start = estimated_arrival_start,
                end = (estimated_arrival_start + datetime.timedelta(days = 32)).replace(day = 1),
                ),
            destination_point = doc.find(text = re.compile('Lieferadresse:'))
                .findNext().text.replace('\r\n', '\n'),
            ))

    return [order]