"""
clients array:
0 - Socket
1 - nickname
2 - active client or not (0 active , -1 disconnected)
3 - client ip
"""

from socket import * # sockets
from threading import Thread # thread
import sys
import os
#store information of the clients
clients = []
#store clients in a private chat
privateChat = []
#thread that receives inputs at the server terminal
def listClients():
    while 1:
        somethin = raw_input('see list?\n')
        #list all available connections
        if somethin == "list()":
            if len(clients) !=0:
                for i in range(0, len(clients)):
                    #checks which clients are connected
                    if clients[i][2]==0:
                        print "name: %s ip: %s port: 12000"%(clients[i][1],clients[i][3])
            else:
                print "no such clients logged"


        elif somethin == "close()":
            for i in range(0, len(clients)):
                if clients[i][2]==0:
                    try:
                        clients[i][0].send("close")
                    except:
                        print "Logged out client"

            break
    serverSocket.close()
    os._exit(0)
    sys.exit("Finished Execution")

#parallely manage clients
def clientManager(connectionSocket,t_id):
    #receive the nickname of the client
    good_name = "no"
    while good_name == "no":
        sentence = connectionSocket.recv(1024)
        good_name = "yes"
        for i in range(0, len(clients)):
            if sentence == clients[i][1]:
                good_name = "no"
                connectionSocket.send("Name already in use, choose another nickname:")
                break

    clients[t_id][1] = sentence
    identification = "Cliente %s has logged in." % (sentence)
    print identification
    for i in range(0, len(clients)):
            if clients[i][2]==0:
                clients[i][0].send(identification)
    while 1:
        try:
            message = connectionSocket.recv(1024) #
        except:
            os._exit(0)
        serv_response = "[%s]: %s" % (clients[t_id][1],message)
        #store the id of who sent the message
        clientSender = t_id
        print serv_response
        #change nickname
        if "name(" in message:
            new_name = message.split('name(')
            new_name = new_name[1].split(')')
            new_name = new_name[0]
            good_name = "yes"
            for i in range(0, len(clients)):
                if new_name == clients[i][1]:
                    good_name = "no"
                    break
            if good_name == "no":
                clients[t_id][0].send("Name already in use, choose another nickname:")
            else:
                nick_change = "%s changed to: %s"%(clients[t_id][1],new_name)
                clients[t_id][1] = new_name
                print "New nick is: %s"%new_name
                for i in range(0, len(clients)):
                    if clients[i][2]==0:
                        clients[i][0].send(nick_change)
        #send list of connected users
        elif "/list" in message:
            for i in range(0, len(clients)):
                if clients[i][2]==0:
                    send_list = "name: %s ip: %s port: 12000\n"%(clients[i][1],clients[i][3])
                    clients[t_id][0].send(send_list)

        else:
            if message == "/quit":
                clients[t_id][2]=-1
                serv_response = "Client %s left the room."%clients[t_id][1]
                print "Client %s left the room."%clients[t_id][1]
                for i in range(0, len(clients)):
                    if clients[i][2]==0 and i!= clientSender:
                        clients[i][0].send(serv_response)
                break
            for i in range(0, len(clients)):
                if clients[i][2]==0 and i!= clientSender:
                    clients[i][0].send(serv_response)



    connectionSocket.close()


serverName = '' # server ip
serverPort = 12000 # port to be connected
global serverSocket
serverSocket = socket(AF_INET,SOCK_STREAM) # TCP socket creation
try:
    serverSocket.bind((serverName,serverPort)) # bind server ip with its port
except:
    print "Port already in use"
    serverSocket.close()
    os._exit(0)
t = Thread(target=listClients, args=())
t.start()
serverSocket.listen(1)
print "TCP server waiting connections on port %d ..." % (serverPort)
counter = 0
while 1:
    #indicates if it was invited to a private chat
    flagInvP=0
    #inicializes who invited
    inviterID=0
    #inicializes who is in private chat
    inPrivateChat = 0
    try:
        connectionSocket, addr = serverSocket.accept()
    except:
        serverSocket.close()
        os._exit(0)
    clients.append([connectionSocket,0,0,addr,flagInvP,inviterID,inPrivateChat])

    t = Thread(target=clientManager, args=(connectionSocket,counter,))
    t.start()
    counter += 1
serverSocket.close()