#!/bin/python3
import sys
from os import environ, system, path
from tabulate import tabulate
from hcloud import Client
from hcloud.images.domain import Image
from hcloud.server_types.domain import ServerType
from hcloud.ssh_keys.domain import SSHKey
from hcloud.datacenters.domain import Datacenter
from hcloud.primary_ips.domain import PrimaryIP
from hcloud.volumes.domain import Volume
from hcloud.servers.domain import ServerCreatePublicNetwork
from hcloud.locations.domain import Location

server_name = "lgsm-1"
#server_type = "cx11"
server_type_id = None
server_key = 6513932
server_image = 45557056
server_ipv4 = 11737045
server_ipv6 = 11737053
volume_id = 22257210 #11742041

# please put the token in a file named .token in the same dir as the python script
token_file = open("%s/.token"%path.dirname(__file__), "r")
token = token_file.read().replace("\n","")
token_file.close()
client = Client(token=token)

# get volume
volume = Volume(volume_id)

# get server types
models = client.server_types.get_all()

# functions
def delete_server(s):
    print  ("detach volume")
    response = client.volumes.detach(volume)
    response.wait_until_finished()
    print("deleting server...")
    response = s.delete()
    response.wait_until_finished()

def check_servertype(server_type):
    # return id or None
    for m in models:
        if m.name == server_type and m.deprecated == False:
            return(m.id)
    return(None)

def select_servertype():
    # return id or None
    models_list = []
    for m in models:
        models_list.append([str(m.id), str(m.name), str(m.description), str(m.cores), str(m.memory), str(m.disk), str(m.storage_type), str(m.cpu_type), str(m.deprecated)])
    print(tabulate(models_list, headers=["ID","Name","Description", "Cores", "Memory", "Disk", "Storage Type", "CPU Type", "Deprecated"], tablefmt="rounded_grid"))
    return(input("Selection: "))

if len(sys.argv) < 2:
    print("shcloud python script")
    print("")
    print("usage:")
    print("shcloud.py create <server_model>")
    print("shcloud.py delete")
    exit(0)

if sys.argv[1] == "delete":
    delete_server(client.servers.get_by_name(server_name))
    exit(0)

if sys.argv[1] == "create":
    # check if server model was selected
    if len(sys.argv) > 2:
        # get server models
        server_type_id = check_servertype(sys.argv[2])
        # if not found force the user to select one
        while server_type_id == None:
            print("Server type not found. Please select one:")
            server_type_id = check_servertype(select_servertype())
    else:
        while server_type_id == None:
            print("Server type not found. Please select one:")
            server_type_id = check_servertype(select_servertype())
    # check if server already exists
    servers = client.servers.get_all()
    for s in servers:
        if s.name == server_name:
            print("server already there")
            answer = input("delete? y/N: ")
            if answer.lower() == "y":
                delete_server(s)
                exit(0) # for now, until I have a way to wait
            else:
                print("Server should not be deleted. Aboring...")
                exit(0)

    # create new server
    print("create new server")
    response = client.servers.create(
        name=server_name,
        server_type=ServerType(id=server_type_id),
        image=Image(id=server_image),
        ssh_keys=[SSHKey(id=server_key)],
        location=Location(name="fsn1"),
        volumes=[Volume(id=volume_id)],
        public_net=ServerCreatePublicNetwork(ipv4=PrimaryIP(id=server_ipv4),ipv6=PrimaryIP(id=server_ipv6),enable_ipv4 = True, enable_ipv6 = True)
    )
    response.action.wait_until_finished()
    print("done")