"""
Onionr - Private P2P Communication

Gossip plugin server, multiplexing using gevent
"""
import os

import selectors
import socket

import filepaths
"""
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 start_server():

    sel = selectors.DefaultSelector()

    def accept(sock, mask):
        conn, addr = sock.accept()  # Should be ready
        print('accepted', conn, 'from', addr)
        conn.setblocking(False)
        sel.register(conn, selectors.EVENT_READ, read)

    def read(conn, mask):
        data = conn.recv(1000)  # Should be ready
        if data:
            print('echoing', repr(data), 'to', conn)
            conn.send(data)  # Hope it won't block
        else:
            print('closing', conn)
            sel.unregister(conn)
            conn.close()

    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
    socket_file = filepaths.identifyhome.identify_home() + "torgossip.sock"
    try:
        os.remove(socket_file)
    except FileNotFoundError:
        pass

    sock.bind(socket_file)
    sock.listen(100)
    sock.setblocking(False)
    sel.register(sock, selectors.EVENT_READ, accept)

    while True:
        events = sel.select()
        for key, mask in events:
            callback = key.data
            callback(key.fileobj, mask)
if __name__ == "__main__":
    start_server()