"""Onionr - Private P2P Communication.

This module defines commands to show stats/details about the local node
"""
import os
import logger
from onionrblocks import onionrblacklist
from onionrutils import mnemonickeys
from utils import sizeutils, gethostname, getconsolewidth, identifyhome
from coredb import blockmetadb, keydb
import onionrcrypto
import config
from etc import onionrvalues
from filepaths import lock_file

import psutil
"""
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""


def _is_running():
    script = onionrvalues.SCRIPT_NAME
    if os.path.isfile(lock_file):
        for process in psutil.process_iter():
            if process.name() == script:
                return True
    return False


def show_stats():
    """Print/log statistic info about our Onionr install."""
    try:
        # define stats messages here
        totalBlocks = len(blockmetadb.get_block_list())
        home = identifyhome.identify_home()
        totalBanned = len(onionrblacklist.OnionrBlackList().getList())

        messages = {
            # info about local client

            # This line is inaccurate if dev mode is enabled
            'Onionr Daemon Status':
            ((logger.colors.fg.green + 'Online') \
                if _is_running() \
                else logger.colors.fg.red + 'Offline'),

            # file and folder size stats
            'div1': True,  # this creates a solid line across the screen, a div
            'Total Block Size':
            sizeutils.human_size(sizeutils.size(home + 'blocks/')),
            'Total Plugin Size':
            sizeutils.human_size(sizeutils.size(home + 'plugins/')),
            'Log File Size':
            sizeutils.human_size(sizeutils.size(home + 'output.log')),

            # count stats
            'div2': True,
            'Known Peers (nodes)':
            str(max(len(keydb.listkeys.list_adders()) - 1, 0)),
            'Enabled Plugins':
            str(len(config.get('plugins.enabled', list()))) + ' / ' +
            str(len(os.listdir(home + 'plugins/'))),
            'Stored Blocks': str(totalBlocks),
            'Deleted Blocks': str(totalBanned)
        }

        # color configuration
        colors = {
            'title': logger.colors.bold,
            'key': logger.colors.fg.lightgreen,
            'val': logger.colors.fg.green,
            'border': logger.colors.fg.lightblue,

            'reset': logger.colors.reset
        }

        # pre-processing
        maxlength = 0
        width = getconsolewidth.get_console_width()
        for key, val in messages.items():
            if not (type(val) is bool and val is True):
                maxlength = max(len(key), maxlength)
        prewidth = maxlength + len(' | ')
        groupsize = width - prewidth - len('[+] ')

        # generate stats table
        logger.info(colors['title'] + 'Onionr v%s Statistics' %
                    onionrvalues.ONIONR_VERSION + colors['reset'],
                    terminal=True)
        logger.info(colors['border'] + '-' * (maxlength + 1) +
                    '+' + colors['reset'], terminal=True)
        for key, val in messages.items():
            if not (type(val) is bool and val is True):
                val = [str(val)[i:i + groupsize]
                       for i in range(0, len(str(val)), groupsize)]

                logger.info(colors['key'] + str(key).rjust(maxlength) +
                            colors['reset'] + colors['border'] +
                            ' | ' + colors['reset'] + colors['val'] +
                            str(val.pop(0)) + colors['reset'], terminal=True)

                for value in val:
                    logger.info(' ' * maxlength + colors['border'] + ' | ' +
                                colors['reset'] + colors['val'] + str(
                        value) + colors['reset'], terminal=True)
            else:
                logger.info(colors['border'] + '-' * (maxlength +
                                                      1) + '+' +
                            colors['reset'], terminal=True)
        logger.info(colors['border'] + '-' * (maxlength + 1) +
                    '+' + colors['reset'], terminal=True)
    except Exception as e:  # pylint: disable=W0703
        logger.error('Failed to generate statistics table. ' +
                     str(e), error=e, timestamp=False, terminal=True)


def show_details():
    """Print out details.

    node transport address(es)
    active user ID
        active user ID in mnemonic form
    """
    details = {
        'Data directory': identifyhome.identify_home(),
        'Node Address': gethostname.get_hostname(),
        'Public Key': onionrcrypto.pub_key.replace('=', ''),
        'Human-readable Public Key': mnemonickeys.get_human_readable_ID()
    }

    for detail in details:
        logger.info('%s%s: \n%s%s\n' % (logger.colors.fg.lightgreen,
                                        detail, logger.colors.fg.green,
                                        details[detail]), terminal=True)


show_details.onionr_help = "Shows relevant information "  # type: ignore
show_details.onionr_help += "for your Onionr install: node "  # type: ignore
show_details.onionr_help += "address, and active public key."  # type: ignore

show_stats.onionr_help = "Shows statistics for your Onionr "  # type: ignore
show_stats.onionr_help += "node. Slow if Onionr is not running"  # type: ignore
