"""
TV information, written by Lurchington 2010
modified by rmmh 2010
"""

import datetime
from urllib2 import URLError

from util import hook, http


base_url = "http://thetvdb.com/api/"
api_key = "469B73127CA0C411"


@hook.command
def tv_next(inp):
    ".tv_next <series> -- get the next episode of <series> from thetvdb.com"

    # http://thetvdb.com/wiki/index.php/API:GetSeries
    try:
        query = http.get_xml(base_url + 'GetSeries.php', seriesname=inp)
    except URLError:
        return "error contacting thetvdb.com"
        
    series_id = query.xpath('//seriesid/text()')

    if not series_id:
        return "unknown tv series (using www.thetvdb.com)"

    series_id = series_id[0]

    try:
        series = http.get_xml(base_url + '%s/series/%s/all/en.xml' %
                              (api_key, series_id))
    except URLError:    
        return "error contacting thetvdb.com"
                              
    series_name = series.xpath('//SeriesName/text()')[0]

    if series.xpath('//Status/text()')[0] == 'Ended':
        return '%s has ended.' % series_name

    next_eps = []
    today = datetime.date.today()

    for episode in reversed(series.xpath('//Episode')):
        first_aired = episode.findtext("FirstAired")
        try:
            airdate = datetime.date(*map(int, first_aired.split('-')))
        except (ValueError, TypeError):
            continue

        episode_name = episode.findtext("EpisodeName") or "No Title Yet"
        episode_num = "S%02dE%02d" % (int(episode.findtext("SeasonNumber")),
                                      int(episode.findtext("EpisodeNumber")))
        episode_desc = '%s "%s"' % (episode_num, episode_name)

        if airdate > today:
            next_eps = ['%s (%s)' % (first_aired, episode_desc)]
        elif airdate == today:
            next_eps = ['Today (%s)' % episode_desc] + next_eps
        else:
            #we're iterating in reverse order with newest episodes last
            #so, as soon as we're past today, break out of loop
            break

    if not next_eps:
        return "there are no new episodes scheduled for %s" % series_name

    if len(next_eps) == 1:
        return "the next episode of %s airs %s" % (series_name, next_eps[0])
    else:
        next_eps = ', '.join(next_eps)
        return "the next episodes of %s: %s" % (series_name, next_eps)