import json

from collections import defaultdict

import click

from ennstatus import create_app

from ...status.functions import split_all_servers_to_types

@click.group(short_help='Get statistics')

def stats():

    pass

@stats.command('count')

@click.option('--by-type', 'by_type', is_flag=True, default=False)

@click.pass_obj

def count(obj, by_type):

    def calculate_host_number(config, type='all', servers=None):

        hosts = set()

        if type == 'all':

            for values in config['ENNSTATUS_SERVERS'].values():

                ips = frozenset(values['IPS'])

                hosts.add(ips)

            return len(hosts)

        else:

            for server in servers[servertype]:

                ips = frozenset(

                    config['ENNSTATUS_SERVERS'][server.name.lower()]['IPS']

                )

                hosts.add(ips)

        return len(hosts)

    app = create_app()

    with app.app_context():

        app.logger.disabled = True

        servers = split_all_servers_to_types()

    if not by_type:

        click.echo(

            'We have %s servers in total!' % (

                click.style(

                    str(sum(len(x) for x in servers.values())),

                    fg='blue'

                )

            )

        )

        click.echo(

            'We have %s different hosts!' % (

                click.style(

                    str(calculate_host_number(app.config)),

                    fg='blue'

                )

            )

        )

    else:

        for servertype, server in servers.items():

            click.echo(

                'We have %s %s servers!' % (

                    click.style(

                        str(len(server)),

                        fg='blue'

                    ),

                    click.style(

                        servertype,

                        fg='red'

                    )

                )

            )

            click.echo(

                'We have %s different %s hosts!' % (

                    click.style(

                        str(

                            calculate_host_number(

                                app.config,

                                type=servertype,

                                servers=servers

                            )

                        ),

                        fg='blue'

                    ),

                    click.style(

                        servertype,

                        fg='red'

                    )

                )

            )

@stats.command('countries')

@click.option('--by-type', 'by_type', is_flag=True, default=False)

@click.pass_obj

def countries(obj, by_type):

    app = create_app()

    with app.app_context():

        app.logger.disabled = True

        servers = split_all_servers_to_types()

    if not by_type:

        countries = defaultdict(int)

        for key, value in servers.items():

            for server in value:

                countries[server.country] += 1

        for key, value in sorted(countries.items(), key=lambda x: x[1]):

            click.echo(

                '%s: %s' % (

                    click.style(key, fg='green'),

                    click.style(str(value), fg='blue')

                )

            )

        click.echo(

            'We are hosted in %s different countries' % click.style(

                str(len(countries.keys())),

                fg='blue'

            )

        )

    else:

        type_countries = {

            'exit': defaultdict(int),

            'relay': defaultdict(int),

            'bridge': defaultdict(int)

        }

        for key, value in servers.items():

            for server in value:

                type_countries[key][server.country] += 1

        type_countries = dict((k, v) for k, v in type_countries.items() if v)

        for key, value in sorted(type_countries.items(), key=lambda x: x[0]):

            click.echo(

                click.style(

                    key.capitalize(),

                    fg='red',

                    bold=True,

                    underline=True

                )

            )

            for country, count in sorted(type_countries[key].items(), key=lambda x: x[1]):

                click.echo(

                    '%s: %s' % (

                        click.style(country, fg='green'),

                        click.style(str(count), fg='blue')

                    )

                )

            click.echo(

                '%s are hosted in %s different countries' % (

                    key,

                    click.style(

                        str(len(type_countries[key].keys())),

                        fg='blue'

                    )

                )

            )

@stats.command('exit_probability')

@click.option('--by-server', 'by_server', is_flag=True, default=False)

@click.pass_obj

def exit_probability(obj, by_server):

    app = create_app()

    with app.app_context():

        app.logger.disabled = True

        servers = split_all_servers_to_types()

    if not by_server:

        exit_probability = defaultdict(int)

        for server in servers['exit']:

            for subkey in ('1_week', '1_month', '3_months', '1_year', '5_years'):

                if server.mean_exit_probability[subkey] is not None:

                    exit_probability[subkey] += server.mean_exit_probability[subkey]

        for subkey in ('1_week', '1_month', '3_months', '1_year', '5_years'):

            click.echo(

                'Mean exit probability over %s: %s' % (

                    click.style(

                        subkey,

                        fg='blue'

                    ),

                    click.style(

                        str(round(exit_probability[subkey], 2)) + '%',

                        fg='red'

                    )

                )

            )

    else:

        for server in servers['exit']:

            click.echo(

                click.style(

                    server.name.capitalize(),

                    fg='red',

                    bold=True,

                    underline=True

                )

            )

            for subkey in ('1_week', '1_month', '3_months', '1_year', '5_years'):

                if server.mean_exit_probability[subkey] is not None:

                    click.echo(

                        'Mean exit probabilty over %s: %s' % (

                            click.style(

                                subkey,

                                fg='blue'

                            ),

                            click.style(

                                str(round(server.mean_exit_probability[subkey], 2)) + "%",

                                fg='red'

                            )

                        )

                    )