"""
Onionr - Private P2P Communication.

Lookup new peer transport addresses using the communicator
"""
import logger
from onionrutils import stringvalidators
from communicator import peeraction, onlinepeers
from utils import gettransports
import onionrexceptions
"""
    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 lookup_new_peer_transports_with_communicator(comm_inst):
    logger.info('Looking up new addresses...')
    tryAmount = 1
    newPeers = []
    transports = gettransports.get()

    for i in range(tryAmount):
        # Download new peer address list from random online peers
        if len(newPeers) > 10000:
            # Don't get new peers if we have too many queued up
            break
        try:
            peer = onlinepeers.pick_online_peer(comm_inst)
            newAdders = peeraction.peer_action(comm_inst, peer, action='pex')
        except onionrexceptions.OnlinePeerNeeded:
            continue
        try:
            newPeers = newAdders.split(',')
        except AttributeError:
            pass
    else:
        # Validate new peers are good format and not already in queue
        invalid = []
        for x in newPeers:
            x = x.strip()
            if not stringvalidators.validate_transport(x) \
                    or x in comm_inst.newPeers or x in transports:
                # avoid adding if its our address
                invalid.append(x)
        for x in invalid:
            try:
                newPeers.remove(x)
            except ValueError:
                pass
        comm_inst.newPeers.extend(newPeers)
    comm_inst.decrementThreadCount(
        'lookup_new_peer_transports_with_communicator')