#!/usr/bin/env python3.10
from csv import DictReader
import os, socket, subprocess



def read_csv(csv_file = str):
    with open(csv_file, newline='') as csv:
        read_server = DictReader(csv)
        server_liste, user_liste = [] , []
        for row in read_server:
            user_liste.append(row['user'])
            server_liste.append(row['\ufeffserver'])            
    return {
                'server' : server_liste, 
                'user' : user_liste
                }


def ssh_connection(con_server= str,con_user = str,bash_script = """ls"""):
    return subprocess.Popen(
        "ssh -T {user}@{host} '{cmd}'".format(user=con_user, host=con_server, cmd=bash_script),
        shell=True,
        universal_newlines=True,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    ).communicate()

def ssh_connection_tt(con_server= str,con_user = str,bash_script = """ls"""):
    return subprocess.Popen(
        "echo '{cmd};exit'|ssh {host} -tt sudo su - {user} ".format(user=con_user, host=con_server, cmd=bash_script),
        shell=True,
        universal_newlines=True,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    ).communicate()


def ssh_check(con_server = str, check_port = 22):
    response = os.system("ping -c 1 " + con_server + '>& /dev/null')
    if response == 0:
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
            return s.connect_ex((con_server, check_port)) == 0
    else:
        return False
    

if __name__ == "__main__":
    script_folder = os.path.dirname(os.path.realpath(__file__))
    server_csv = script_folder + os.sep + "test.csv"
    run_script_bash = """
GREP_PACK="atlas_ibtools"
echo "test"
bash --version
"""
    run_oneline_bash="""ll; echo 'test'"""
    for count in range(0,len(read_csv(server_csv)['server'])):
        servername = read_csv(server_csv)['server'][count]
        con_username = read_csv(server_csv)['user'][count]
        user_server_con = str(con_username + '@' + servername)
        print(servername, "verbindng wird geprüft...",sep=' ')
        if ssh_check(con_server=servername) is True:
            print(servername, "erreichbar...", sep=' ')
            
            for show_output in list(ssh_connection_tt(con_server=servername, con_user=con_username, bash_script=run_oneline_bash)):
                print(show_output.rstrip())
            
            for show_output in list(ssh_connection(con_server=servername, con_user=con_username, bash_script=run_script_bash)):
                print(show_output.rstrip())
        else:
            print(servername, "nicht erreichbar oder kein ssh!!", sep=' ')
        #if ssh_check(con_server=servername) is True:
        #    print(servername, "port offen")
        #print("Server:", read_csv(server_csv)['server'][count], "User:", read_csv(server_csv)['user'][count], sep=" ")
        #ssh_connection(con_server=read_csv("test.csv")['server'][count])