import re

from util import hook, http


@hook.command('u')
@hook.command
def urban(inp):
    '''.u/.urban <phrase> -- looks up <phrase> on urbandictionary.com'''

    url = 'http://www.urbandictionary.com/iphone/search/define'
    page = http.get_json(url, term=inp, headers={'Referer': 'http://m.urbandictionary.com'})
    defs = page['list']

    if page['result_type'] == 'no_results':
        return 'not found.'

    out = defs[0]['word'] + ': ' + defs[0]['definition'].replace('\r\n', ' ')

    if len(out) > 400:
        out = out[:out.rfind(' ', 0, 400)] + '...'

    return out


# define plugin by GhettoWizard & Scaevolus
@hook.command('dictionary')
@hook.command
def define(inp):
    ".define/.dictionary <word> -- fetches definition of <word>"

    url = 'http://ninjawords.com/'

    h = http.get_html(url + http.quote_plus(inp))

    definition = h.xpath('//dd[@class="article"] | '
                         '//div[@class="definition"] |'
                         '//div[@class="example"]')

    if not definition:
        return 'No results for ' + inp

    def format_output(show_examples):
        result = '%s: ' % h.xpath('//dt[@class="title-word"]/a/text()')[0]

        correction = h.xpath('//span[@class="correct-word"]/text()')
        if correction:
            result = 'definition for "%s": ' % correction[0]

        sections = []
        for section in definition:
            if section.attrib['class'] == 'article':
                sections += [[section.text_content() + ': ']]
            elif section.attrib['class'] == 'example':
                if show_examples:
                    sections[-1][-1] += ' ' + section.text_content()
            else:
                sections[-1] += [section.text_content()]

        for article in sections:
            result += article[0]
            if len(article) > 2:
                result += ' '.join('%d. %s' % (n + 1, section)
                                   for n, section in enumerate(article[1:]))
            else:
                result += article[1] + ' '

        synonyms = h.xpath('//dd[@class="synonyms"]')
        if synonyms:
            result += synonyms[0].text_content()

        result = re.sub(r'\s+', ' ', result)
        result = re.sub('\xb0', '', result)
        return result

    result = format_output(True)
    if len(result) > 450:
        result = format_output(False)

    if len(result) > 450:
        result = result[:result.rfind(' ', 0, 450)]
        result = re.sub(r'[^A-Za-z]+\.?$', '', result) + ' ...'

    return result


@hook.command('e')
@hook.command
def etymology(inp):
    ".e/.etymology <word> -- Retrieves the etymology of chosen word"

    url = 'http://www.etymonline.com/index.php'

    h = http.get_html(url, term=inp)

    etym = h.xpath('//dl')

    if not etym:
        return 'No etymology found for ' + inp

    etym = etym[0].text_content()

    etym = ' '.join(etym.split())

    if len(etym) > 400:
        etym = etym[:etym.rfind(' ', 0, 400)] + ' ...'

    return etym