# coding=utf-8
"""
meetbot.py - Sopel meeting logger module
Copyright © 2012, Elad Alfassa, <elad@fedoraproject.org>
Licensed under the Eiffel Forum License 2.

This module is an attempt to implement at least some of the functionallity of Debian's meetbot
"""
from __future__ import unicode_literals, absolute_import, print_function, division

import time
import os
from sopel.config.types import (
    StaticSection, FilenameAttribute, ValidatedAttribute
)
from sopel.web import quote
from sopel.modules.url import find_title
from sopel.module import example, commands, rule, priority
from sopel.tools import Ddict, Identifier
import codecs


class MeetbotSection(StaticSection):
    meeting_log_path = FilenameAttribute('meeting_log_path', directory=True,
                                         default='~/www/meetings')
    """Path to meeting logs storage directory

    This should be an absolute path, accessible on a webserver."""
    meeting_log_baseurl = ValidatedAttribute(
        'meeting_log_baseurl',
        default='http://localhost/~sopel/meetings'
    )
    """Base URL for the meeting logs directory"""


def configure(config):
    config.define_section('meetbot', MeetbotSection)
    config.meetbot.configure_setting(
        'meeting_log_path',
        'Enter the directory to store logs in.'
    )
    config.meetbot.configure_setting(
        'meeting_log_baseurl',
        'Enter the base URL for the meeting logs.',
    )


def setup(bot):
    bot.config.define_section('meetbot', MeetbotSection)


meetings_dict = Ddict(dict)  # Saves metadata about currently running meetings
"""
meetings_dict is a 2D dict.

Each meeting should have:
channel
time of start
head (can stop the meeting, plus all abilities of chairs)
chairs (can add infolines to the logs)
title
current subject
comments (what people who aren't voiced want to add)

Using channel as the meeting ID as there can't be more than one meeting in a channel at the same time.
"""
meeting_log_path = ''  # To be defined on meeting start as part of sanity checks, used by logging functions so we don't have to pass them bot
meeting_log_baseurl = ''  # To be defined on meeting start as part of sanity checks, used by logging functions so we don't have to pass them bot
meeting_actions = {}  # A dict of channels to the actions that have been created in them. This way we can have .listactions spit them back out later on.


# Get the logfile name for the meeting in the requested channel
# Used by all logging functions
def figure_logfile_name(channel):
    if meetings_dict[channel]['title'] is 'Untitled meeting':
        name = 'untitled'
    else:
        name = meetings_dict[channel]['title']
    # Real simple sluggifying. This bunch of characters isn't exhaustive, but
    # whatever. It's close enough for most situations, I think.
    for c in ' ./\\:*?"<>|&*`':
        name = name.replace(c, '-')
    timestring = time.strftime('%Y-%m-%d-%H:%M', time.gmtime(meetings_dict[channel]['start']))
    filename = timestring + '_' + name
    return filename


# Start HTML log
def logHTML_start(channel):
    logfile = codecs.open(meeting_log_path + channel + '/' + figure_logfile_name(channel) + '.html', 'a', encoding='utf-8')
    timestring = time.strftime('%Y-%m-%d %H:%M', time.gmtime(meetings_dict[channel]['start']))
    title = '%s at %s, %s' % (meetings_dict[channel]['title'], channel, timestring)
    logfile.write('<!doctype html>\n<html>\n<head>\n<meta charset="utf-8">\n<title>%TITLE%</title>\n</head>\n<body>\n<h1>%TITLE%</h1>\n'.replace('%TITLE%', title))
    logfile.write('<h4>Meeting started by %s</h4><ul>\n' % meetings_dict[channel]['head'])
    logfile.close()


# Write a list item in the HTML log
def logHTML_listitem(item, channel):
    logfile = codecs.open(meeting_log_path + channel + '/' + figure_logfile_name(channel) + '.html', 'a', encoding='utf-8')
    logfile.write('<li>' + item + '</li>\n')
    logfile.close()


# End the HTML log
def logHTML_end(channel):
    logfile = codecs.open(meeting_log_path + channel + '/' + figure_logfile_name(channel) + '.html', 'a', encoding='utf-8')
    current_time = time.strftime('%H:%M:%S', time.gmtime())
    logfile.write('</ul>\n<h4>Meeting ended at %s UTC</h4>\n' % current_time)
    plainlog_url = meeting_log_baseurl + quote(channel + '/' + figure_logfile_name(channel) + '.log')
    logfile.write('<a href="%s">Full log</a>' % plainlog_url)
    logfile.write('\n</body>\n</html>')
    logfile.close()


# Write a string to the plain text log
def logplain(item, channel):
    current_time = time.strftime('%H:%M:%S', time.gmtime())
    logfile = codecs.open(meeting_log_path + channel + '/' + figure_logfile_name(channel) + '.log', 'a', encoding='utf-8')
    logfile.write('[' + current_time + '] ' + item + '\r\n')
    logfile.close()


# Check if a meeting is currently running
def ismeetingrunning(channel):
    try:
        if meetings_dict[channel]['running']:
            return True
        else:
            return False
    except KeyError:
        return False


# Check if nick is a chair or head of the meeting
def ischair(nick, channel):
    try:
        if nick.lower() == meetings_dict[channel]['head'] or nick.lower() in meetings_dict[channel]['chairs']:
            return True
        else:
            return False
    except KeyError:
        return False


# Start meeting (also preforms all required sanity checks)
@commands('startmeeting')
@example('.startmeeting title or .startmeeting')
def startmeeting(bot, trigger):
    """
    Start a meeting.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, there is already a meeting in progress here!')
        return
    if trigger.is_privmsg:
        bot.say('Can only start meetings in channels')
        return
    # Start the meeting
    meetings_dict[trigger.sender]['start'] = time.time()
    if not trigger.group(2):
        meetings_dict[trigger.sender]['title'] = 'Untitled meeting'
    else:
        meetings_dict[trigger.sender]['title'] = trigger.group(2)
    meetings_dict[trigger.sender]['head'] = trigger.nick.lower()
    meetings_dict[trigger.sender]['running'] = True
    meetings_dict[trigger.sender]['comments'] = []

    global meeting_log_path
    meeting_log_path = bot.config.meetbot.meeting_log_path
    if not meeting_log_path.endswith('/'):
        meeting_log_path = meeting_log_path + '/'
    global meeting_log_baseurl
    meeting_log_baseurl = bot.config.meetbot.meeting_log_baseurl
    if not meeting_log_baseurl.endswith('/'):
        meeting_log_baseurl = meeting_log_baseurl + '/'
    if not os.path.isdir(meeting_log_path + trigger.sender):
        try:
            os.makedirs(meeting_log_path + trigger.sender)
        except Exception:  # TODO: Be specific
            bot.say("Can't create log directory for this channel, meeting not started!")
            meetings_dict[trigger.sender] = Ddict(dict)
            raise
            return
    # Okay, meeting started!
    logplain('Meeting started by ' + trigger.nick.lower(), trigger.sender)
    logHTML_start(trigger.sender)
    meeting_actions[trigger.sender] = []
    bot.say('Meeting started! use .action, .agreed, .info, .chairs, .subject and .comments to control the meeting. to end the meeting, type .endmeeting')
    bot.say('Users without speaking permission can use .comment ' +
            trigger.sender + ' followed by their comment in a PM with me to '
            'vocalize themselves.')


# Change the current subject (will appear as <h3> in the HTML log)
@commands('subject')
@example('.subject roll call')
def meetingsubject(bot, trigger):
    """
    Change the meeting subject.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('what is the subject?')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    meetings_dict[trigger.sender]['current_subject'] = trigger.group(2)
    logfile = codecs.open(meeting_log_path + trigger.sender + '/' + figure_logfile_name(trigger.sender) + '.html', 'a', encoding='utf-8')
    logfile.write('</ul><h3>' + trigger.group(2) + '</h3><ul>')
    logfile.close()
    logplain('Current subject: ' + trigger.group(2) + ', (set by ' + trigger.nick + ')', trigger.sender)
    bot.say('Current subject: ' + trigger.group(2))


# End the meeting
@commands('endmeeting')
@example('.endmeeting')
def endmeeting(bot, trigger):
    """
    End a meeting.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    meeting_length = time.time() - meetings_dict[trigger.sender]['start']
    # TODO: Humanize time output
    bot.say("Meeting ended! total meeting length %d seconds" % meeting_length)
    logHTML_end(trigger.sender)
    htmllog_url = meeting_log_baseurl + quote(trigger.sender + '/' + figure_logfile_name(trigger.sender) + '.html')
    logplain('Meeting ended by %s, total meeting length %d seconds' % (trigger.nick, meeting_length), trigger.sender)
    bot.say('Meeting minutes: ' + htmllog_url)
    meetings_dict[trigger.sender] = Ddict(dict)
    del meeting_actions[trigger.sender]


# Set meeting chairs (people who can control the meeting)
@commands('chairs')
@example('.chairs Tyrope Jason elad')
def chairs(bot, trigger):
    """
    Set the meeting chairs.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('Who are the chairs?')
        return
    if trigger.nick.lower() == meetings_dict[trigger.sender]['head']:
        meetings_dict[trigger.sender]['chairs'] = trigger.group(2).lower().split(' ')
        chairs_readable = trigger.group(2).lower().replace(' ', ', ')
        logplain('Meeting chairs are: ' + chairs_readable, trigger.sender)
        logHTML_listitem('<span style="font-weight: bold">Meeting chairs are: </span>' + chairs_readable, trigger.sender)
        bot.say('Meeting chairs are: ' + chairs_readable)
    else:
        bot.say("Only meeting head can set chairs")


# Log action item in the HTML log
@commands('action')
@example('.action elad will develop a meetbot')
def meetingaction(bot, trigger):
    """
    Log an action in the meeting log
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('try .action someone will do something')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    logplain('ACTION: ' + trigger.group(2), trigger.sender)
    logHTML_listitem('<span style="font-weight: bold">Action: </span>' + trigger.group(2), trigger.sender)
    meeting_actions[trigger.sender].append(trigger.group(2))
    bot.say('ACTION: ' + trigger.group(2))


@commands('listactions')
@example('.listactions')
def listactions(bot, trigger):
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    for action in meeting_actions[trigger.sender]:
        bot.say('ACTION: ' + action)


# Log agreed item in the HTML log
@commands('agreed')
@example('.agreed Bowties are cool')
def meetingagreed(bot, trigger):
    """
    Log an agreement in the meeting log.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('try .action someone will do something')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    logplain('AGREED: ' + trigger.group(2), trigger.sender)
    logHTML_listitem('<span style="font-weight: bold">Agreed: </span>' + trigger.group(2), trigger.sender)
    bot.say('AGREED: ' + trigger.group(2))


# Log link item in the HTML log
@commands('link')
@example('.link http://example.com')
def meetinglink(bot, trigger):
    """
    Log a link in the meeing log.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('try .action someone will do something')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    link = trigger.group(2)
    if not link.startswith("http"):
        link = "http://" + link
    try:
        title = find_title(link, verify=bot.config.core.verify_ssl)
    except Exception:  # TODO: Be specific
        title = ''
    logplain('LINK: %s [%s]' % (link, title), trigger.sender)
    logHTML_listitem('<a href="%s">%s</a>' % (link, title), trigger.sender)
    bot.say('LINK: ' + link)


# Log informational item in the HTML log
@commands('info')
@example('.info all board members present')
def meetinginfo(bot, trigger):
    """
    Log an informational item in the meeting log
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        bot.say('Can\'t do that, start meeting first')
        return
    if not trigger.group(2):
        bot.say('try .info some informative thing')
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    logplain('INFO: ' + trigger.group(2), trigger.sender)
    logHTML_listitem(trigger.group(2), trigger.sender)
    bot.say('INFO: ' + trigger.group(2))


# called for every single message
# Will log to plain text only
@rule('(.*)')
@priority('low')
def log_meeting(bot, trigger):
    if not ismeetingrunning(trigger.sender):
        return
    if trigger.startswith('.endmeeting') or trigger.startswith('.chairs') or trigger.startswith('.action') or trigger.startswith('.info') or trigger.startswith('.startmeeting') or trigger.startswith('.agreed') or trigger.startswith('.link') or trigger.startswith('.subject'):
        return
    logplain('<' + trigger.nick + '> ' + trigger, trigger.sender)


@commands('comment')
def take_comment(bot, trigger):
    """
    Log a comment, to be shown with other comments when a chair uses .comments.
    Intended to allow commentary from those outside the primary group of people
    in the meeting.

    Used in private message only, as `.comment <#channel> <comment to add>`
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not trigger.sender.is_nick():
        return
    if not trigger.group(4):  # <2 arguements were given
        bot.say('Usage: .comment <#channel> <comment to add>')
        return

    target, message = trigger.group(2).split(None, 1)
    target = Identifier(target)
    if not ismeetingrunning(target):
        bot.say("There's not currently a meeting in that channel.")
    else:
        meetings_dict[trigger.group(3)]['comments'].append((trigger.nick, message))
        bot.say("Your comment has been recorded. It will be shown when the"
                " chairs tell me to show the comments.")
        bot.msg(meetings_dict[trigger.group(3)]['head'], "A new comment has been recorded.")


@commands('comments')
def show_comments(bot, trigger):
    """
    Show the comments that have been logged for this meeting with .comment.
    https://github.com/sopel-irc/sopel/wiki/Using-the-meetbot-module
    """
    if not ismeetingrunning(trigger.sender):
        return
    if not ischair(trigger.nick, trigger.sender):
        bot.say('Only meeting head or chairs can do that')
        return
    comments = meetings_dict[trigger.sender]['comments']
    if comments:
        msg = 'The following comments were made:'
        bot.say(msg)
        logplain('<%s> %s' % (bot.nick, msg), trigger.sender)
        for comment in comments:
            msg = '<%s> %s' % comment
            bot.say(msg)
            logplain('<%s> %s' % (bot.nick, msg), trigger.sender)
        meetings_dict[trigger.sender]['comments'] = []
    else:
        bot.say('No comments have been logged.')
