#! /usr/bin/env python3

import os, sys, subprocess

class nfs_server_conf:
    def __init__(self, nfs_srv_folders = ["/nfsroot/publicnfs","/nfsroot/datennfs"]) -> None:
        if not os.geteuid()==0:
            raise PermissionError("Sie sind kein Root")
        self.nfs_srv_folders = nfs_srv_folders

    def create_serverfolder(self):
        for srv_folder in self.nfs_srv_folders:
                if os.path.exists(srv_folder):
                    print(srv_folder,"ist bereits vorhanden !")
                else:
                    os.makedirs(srv_folder, mode=1777)

    def mount_serverfolder(self):
        for srv_folder in self.nfs_srv_folders:
            with open("/etc/systemd/system/" + os.path.basename(srv_folder) + ".mount", "w") as unit_file:
                print("""[Unit]\nDescription=Mount nfs Server Share\n[Mount]\nWhat={srv_folder}\nWhere={srv_point}\nType=None\nOptions=bind\n[Install]\nWantedBy=multi-user.target""".format(
                    srv_folder=srv_folder,
                    srv_point="/" + os.path.basename(srv_folder)), file=unit_file)
            try:
                mountfile = os.path.basename(srv_folder) + ".mount"
                subprocess.run(['systemctl', 'daemon-reload'])
                print(mountfile)
                #subprocess.run('systemctl start ')
                subprocess.Popen('systemctl start ' + mountfile, shell=True)
            except SystemError:
                raise "Service " + unit_file + " konnte nicht gestart werden"
                                                
                
    def nfs_server_conf(self):
        pass

    def nfs_con_user(self):
        pass

    def start_nfs_server(self):
        pass
    
    def main(self):
        print("Erstelle Server Verzeichnise : ")
        nfs_server_conf.create_serverfolder(self)
        nfs_server_conf.mount_serverfolder(self)

    def __str__(self) -> str:
        pass

if __name__ == "__main__":
    my_nfs_server = nfs_server_conf()
    my_nfs_server.main()