#server for collecting DHT info

import json
import sqlite3
from sqlite3 import Error
import os
import socket
#ipaddress needs to be installed its not part of the standard lib
import ipaddress
import thread

SERVER = ""
DB_PATH = "vservdb/"


def check_coords(coords):
    coord_len = coords.replace(' ', '').replace('[', '').replace(']', '')
    digits_found = [x for x in coord_len if x.isdigit()]

    if len(digits_found) == len(coord_len):
        crus = True
    else:
        crus = False
    return crus


def valid_ipv6_check(ipv6add):
    try:
        if ipaddress.IPv6Address(unicode(ipv6add)):
            addr = True
    except:
        addr = False
    return addr


def isdatabase(db_path):
    if not os.path.exists(db_path + "yggindex.db"):
        if not os.path.exists(db_path):
            os.makedirs(db_path)
        try:
            conn = sqlite3.connect(db_path + 'yggindex.db')
            c = conn.cursor()
            c.execute('''create table yggindex(ipv6 varchar(45) UNIQUE, coords varchar(50),
                        ut unixtime default (strftime('%s','now')))''')
            conn.commit()
        except Error as e:
            print(e)
        finally:
            conn.close()
    else:
        print("found database will not create a new one")


def insert_new_entry(db_path, ipv6, coords):
    try:
        conn = sqlite3.connect(db_path + "yggindex.db")
        c = conn.cursor()
        conn.execute('''INSERT OR REPLACE INTO yggindex(ipv6, coords) VALUES(?, ?)''',\
                    (ipv6, coords)) 
        conn.commit()
        conn.close()
    except Error as e:
        print e


def error_check_insert_into_db(dht, switchpeers):
    try:
        if dht.get("status") == "success":
            for x, y in dht["response"]["dht"].iteritems():
                if valid_ipv6_check(x) and check_coords(y["coords"]):
                    insert_new_entry(DB_PATH, x, y["coords"])

        if dht.get("status") == "success":
            for x in switchpeers["response"]["switchpeers"].iteritems():
                if valid_ipv6_check(x[1]["ip"]) and check_coords(x[1]["coords"]):
                    insert_new_entry(DB_PATH, x[1]["ip"], x[1]["coords"])
    except:
        print"error in json file, aborting"


def proccess_incoming_data(datty, addr):
    print addr
    try:
        ddata = datty.recv(1024 * 20)
        data = json.loads(ddata.decode())
        error_check_insert_into_db(data["dhtpack"], data["switchpack"])
    except:
        print "ignoring, data was not json"


isdatabase(DB_PATH)

conn = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
conn.bind((SERVER, 45671))
conn.listen(30)

while True:
    try:
        dataraw, addr = conn.accept()
        thread.start_new_thread(proccess_incoming_data, (dataraw, addr))
    except Exception:
        print "bloop"