# -*- coding: utf-8 -*-
from __future__ import print_function
import willie

import json
import shelve
import time
import urllib2

from ffpb import pretty_date
from batcave import BatcaveClient

__batcave = None
highscores = None


def setup(bot):
    """Called by willie upon loading this plugin."""

    global __batcave, highscores

    __batcave = BatcaveClient(bot.config.ffpb.batcave_url)

    # load highscores from disk
    highscores = shelve.open('highscoredata', writeback=True)
    if not 'nodes' in highscores:
        highscores['nodes'] = 0
        highscores['nodes_ts'] = time.time()
    if not 'clients' in highscores:
        highscores['clients'] = 0
        highscores['clients_ts'] = time.time()


def shutdown(bot):
    """Called by willie upon loading this plugin."""

    global highscores

    # store highscores
    if not highscores is None:
        highscores.sync()
        highscores.close()
        highscores = None


@willie.module.interval(15)
def ffpb_get_stats(bot):
    """Fetch current statistics, if the highscore changes signal this."""

    status = __batcave.get_status()
    if status is None:
        bot.say('Yikes, offenbar ist das allwissende Auge gerade schlafen.')
        return

    (nodes_active, clients_count) = \
        (status['nodes_active'], status['clients_unique'])

    highscore_changed = False
    if nodes_active > highscores['nodes']:
        highscores['nodes'] = nodes_active
        highscores['nodes_ts'] = time.time()
        highscore_changed = True

    if clients_count > highscores['clients']:
        highscores['clients'] = clients_count
        highscores['clients_ts'] = time.time()
        highscore_changed = True

    if highscore_changed:
        print('HIGHSCORE changed: {0} nodes ({1}), {2} clients ({3})'.format(
            highscores['nodes'],
            highscores['nodes_ts'],
            highscores['clients'],
            highscores['clients_ts'],
        ))
        if not bot.config.ffpb.msg_target is None:
            action_msg = 'notiert sich den neuen Highscore: {0} Knoten ({1}), {2} Clients ({3})'

            action_target = bot.config.ffpb.msg_target
            if not bot.config.ffpb.msg_target_public is None:
                action_target = bot.config.ffpb.msg_target_public

            bot.msg(action_target, '\x01ACTION %s\x01' % action_msg.format(
                highscores['nodes'], pretty_date(int(highscores['nodes_ts'])),
                highscores['clients'], pretty_date(int(highscores['clients_ts'])),
            ))


@willie.module.commands('status')
def ffpb_status(bot, trigger):
    """State of the network: count of nodes + clients"""

    stats = __batcave.get_status()
    if stats is None:
        bot.say('Uff, kein Plan wo der Zettel ist. Fragst du später nochmal?')
        return

    bot.say('Es sind {0} Knoten und ca. {1} Clients online.'.format(
            stats["nodes_active"], stats["clients_unique"]))


@willie.module.commands('raw-status')
def ffpb_batcave_status(bot, trigger):
    """State as given by BATCAVE."""

    status = __batcave.get_status()
    bot.say('Status: ' + str(json.dumps(status))[1:-1])


@willie.module.commands('highscore')
def ffpb_highscore(bot, trigger):
    """Print current highscores (nodes + clients)."""

    bot.say('Highscore: {0} Knoten ({1}), {2} Clients ({3})'.format(
        highscores['nodes'], pretty_date(int(highscores['nodes_ts'])),
        highscores['clients'], pretty_date(int(highscores['clients_ts']))))


@willie.module.commands('rollout-status')
def ffpb_rolloutstatus(bot, trigger):
    """Display statistic on how many nodes have installed the given firmware version."""

    # initialize results dictionary
    result = {}
    skipped = 0

    # inform users about changed command parameters
    if not trigger.group(2) is None:
        bot.reply('Dieses Kommando nimmt keinen Parameter mehr an.')
        return

    nodes = __batcave.get_nodes()

    # check each node in ALFRED data
    for item in nodes:
        if (not 'software' in item) or (not 'firmware' in item['software']) or (not 'autoupdater' in item['software']):
            skipped += 1
            continue

        release = item['software']['firmware']['release']
        branch = item['software']['autoupdater']['branch']
        enabled = item['software']['autoupdater']['enabled']
        if not release in result or result[release] is None:
            result[release] = {'stable': None, 'testing': None,}
        if not branch in result[release] or result[release][branch] is None:
            result[release][branch] = {'auto': 0, 'manual': 0, 'total': 0,}

        result[release][branch]['total'] += 1
        mode = 'auto' if enabled else 'manual'
        result[release][branch][mode] += 1

    # respond to user
    releases = sorted([x for x in result])
    for release in releases:
        output = 'Rollout von \'{0}\':'.format(release)
        branches = sorted([x for x in result[release]])
        first = True
        for branch in branches:
            item = result[release][branch]
            if item is None:
                continue

            if not first:
                output += ','
            first = False

            total = item['total']
            auto_count = item['auto']
            manual_count = item['manual']

            output += ' {2} {0}'.format(branch, total, auto_count, manual_count)
            if manual_count > 0:
                output += ' (+{3} manuell)'.format(branch, total, auto_count, manual_count)

        bot.say(output)

    # output count of nodes for which the autoupdater's branch and/or
    # firmware version could not be retrieved
    if skipped > 0:
        bot.say('plus {0} Knoten deren Status gerade nicht abfragbar war'.format(skipped))


@willie.module.commands('providers')
def ffpb_providers(bot, trigger):
    """Fetch the top 5 providers from BATCAVE."""

    providers = __batcave.get_providers()
    providers.sort(key=lambda x: x['count'], reverse=True)

    top5 = providers[:5]
    top5 = ['{0} ({1:.0f}%)'.format(x['name'], x['percentage']) for x in top5]
    bot.say('Unsere Top 5 Provider: ' + ', '.join(top5))