import core
import os
import subprocess
from multiprocessing import Process, Manager, Pool, TimeoutError, freeze_support
from sys import platform
from time import sleep
import time
import csv
import uuid 

displaydata = None
settings = None
netdata_res = None
procdata_res = None

sysid = hex(uuid.getnode())
res = subprocess.check_output(["WMIC", "ComputerSystem", "GET", "UserName"], universal_newlines=True)
_, username = res.strip().rsplit("\n", 1)
userid, sysdom = username.rsplit("\\", 1)

def run_ps(cmd):
    if platform == "win32":
        completed = subprocess.run(["powershell", "-Command", cmd], capture_output=True)
        return completed

def netstat():
    print("netstat started")
    data = run_ps("netstat -n -o -b")
    return data

def netstat_done(res):
    print("netstat done")
    procdata_res = pool.apply_async(process_netstat, (res,))
    #print(procdata_res.get())
    #netdata_res = pool.apply_async(netstat)

def process_netstat(data):
    print("netstat processing")
    if platform == 'win32':
        #output = data.stdout
        #print(output)
        output = data.stdout.decode().split('\r\n')

        output2 = list()
        output2.append([sysid, userid, sysdom, int( time.time() )])
        print(output2)
        procname = ""
        """for x in range(4, len(output)):
                tmp = output[x].split(" ")
                print(tmp)
                tmp = [i for i in output[x] if i]
                print(tmp)
                print(len(tmp))
                if len(len(tmp) == 1):
                    procname = tmp[0]
                    print(x)
                else:
                    print(x)
                    output2[x] = list()
                    output2[x].append(procname)
                    output2[x].append(output[x].split(" "))
                    output2[x] = [i for i in output2[x] if i]
        output2 = [i for i in output2 if i]
        print(output2)"""
        x = len(output) - 1
        procname = "Unknown"
        while x > 3:
            string = output[x]
            #print("LINE: ", string)
            string_split = string.split(" ")
            string_split = [i for i in string_split if i]
            if string.find("Can not obtain ownership information") >= 0:
                procname = "Windows System"
            elif string.find("]") >= 0 and string.find("[") == 1:
                procname = string[2:-1]
            elif len(string_split) == 5: # and string.find("TIME_WAIT") < 0:
                tmp = [procname,]
                tmp.extend(string.split(" "))
                tmp = [i for i in tmp if i]
                #print(tmp)
                output2.append(tmp)
            #else:
                #print("Garbage data", string)
            x = x - 1
        #output2 = output2[2:]
        #print(output2)
        with open("out.csv", "w", newline="") as f:
            writer = csv.writer(f)
            writer.writerows(output2)
        print("done")


def mainloop(pool):
    # worker pool: netstat, netstat cleanup, upload, download, ui tasks
    print("start loop")
    global netdata_res
    global procdata_res
    global rawdata
    #print(res.get(timeout=1))
    if netdata_res is None or netdata_res.ready():
        #rawdata = netdata_res.get()
        #procdata_res = pool.apply_async(process_netstat, (rawdata))
        print("netstat starting")
        netdata_res = pool.apply_async(netstat, callback=netstat_done)
    sleep(10)

if __name__ == '__main__':
    freeze_support() # required if packaged into EXE
    # create manager to share data to me, background, foreground
    # create worker pool
    #global sysid
    #sysdom, userid
    print(sysid, sysdom, userid)
    with Pool(processes=5) as pool:
        with Manager() as manager:
            displaydata = manager.list(range(2)) # data to be printed
            settings = manager.list(range(20)) # configuration
            # launch background UI app as process
            p = Process(target=core.background, args=(displaydata,settings))
            p.start()   
            #p.join() # not a foreground job, so let's not join it
            keeprunning = True

            # initial setup
            #netdata_res = pool.apply_async(netstat, callback=netstat_done)


            # launch loop
            while(keeprunning):
                mainloop(pool)

    
    
        
        # launch main, non-blocking, loop