#!/usr/bin/python3
#
# Copyright (C) 2012 Canonical, Ltd.
# Author: Matthew Fischer <matthew.fischer@canonical.com>

import sys
import json
import random
import argparse
import string

class ManagementServer():
    def __init__(self, url, name):
        self.RemoteDesktopServers = []
        self.AdditionalManagementServers = []
        self.URL = url
        self.Name = name

    def set_default(self, tsName):
        if isinstance(tsName, str):
            self.DefaultServer = tsName
        else:
            raise TypeError("set_default expects a string argument")

    def add_terminal_server(self, server):
        self.RemoteDesktopServers.append(server)

    def add_additional_management_server(self, amserver):
        if isinstance(amserver, AdditionalManagementServer):
            self.AdditionalManagementServers.append(amserver)
        else:
            raise TypeError("add_additional_management_server expects a "\
                "AdditionalManagementServer argument")

    def toJson(self):
        return json.dumps(self, default=convert_to_builtin_type)

class AdditionalManagementServer():
    def __init__(self, url, name):
        self.URL = url
        self.Name = name

class TerminalServer():
    def __init__(self, url, name, protocol, domainRequired = True, 
        username = None, password = None):
        self.URL = url
        self.Name = name
        self.Protocol = protocol
        self.DomainRequired = domainRequired
        self.Username = username
        self.Password = password

    def add_domain(self, domainName):
        if isinstance(domainName, str):
            self.WindowsDomain = domainName
        else:
            raise TypeError("add_domain expects a string argument")

    def toJson(self):
        return json.dumps(self, default=convert_to_builtin_type)

def convert_to_builtin_type(obj):
    d = { }
    d.update(obj.__dict__)
    return d

def freerdp(email):
    ms = ManagementServer("http://tc.canonical.com", "Landscape")
    ts1 = TerminalServer("23.21.151.133", "FreeRDP US", "freerdp", False, 
        "Administrator")
    ts2 = TerminalServer("46.137.222.181", "FreeRDP Asia", "freerdp", False,
        "Administrator")
    ts3 = TerminalServer("46.137.189.194", "FreeRDP UK", "freerdp", False,
        "Administrator")
    ms.add_terminal_server(ts1)
    ms.add_terminal_server(ts2)
    ms.add_terminal_server(ts3)
    ms.set_default(ts1.Name)
    print(ms.toJson())

def print_error(text):
    print("{ \"Error\": \"%s\" }" % text)

def error(email):
    print_error("Server did not respond")

def citrix(email):
    ms = ManagementServer("http://tc.canonical.com", "Landscape")
    ts1 = TerminalServer("107.21.17.35", "Citrix USA", "ICA", True, 
        "useradmin1")
    ts2 = TerminalServer("107.21.17.35", "Citrix 2", "ICA", True,
        "useradmin2")
    ts3 = TerminalServer("107.21.17.35", "Citrix 3", "ICA", True,
        "useradmin3")
    ts4 = TerminalServer("107.21.17.35", "Citrix 4", "ICA", True,
        "useradmin4", "userpass")
    ts1.add_domain("IP-0A00001E")
    ts2.add_domain("IP-0A00001E")
    ts3.add_domain("IP-0A00001E")
    ts4.add_domain("IP-0A00001E")
    ms.add_terminal_server(ts1)
    ms.add_terminal_server(ts2)
    ms.add_terminal_server(ts3)
    ms.add_terminal_server(ts4)
    print(ms.toJson())

def vmware(email):
    ms = ManagementServer("http://tc.canonical.com", "Landscape")
    ts = TerminalServer("https://10.193.37.140", "VMWare-View Lexington", 
        "vmware", True, "Administrator")
    ts.add_domain("VMWARE")
    ms.add_terminal_server(ts)
    print(ms.toJson())

def defaults(email):
    ms = ManagementServer("http://tc.canonical.com", "Landscape")
    ts1 = TerminalServer("https://10.10.10.10", "AAA", "vmware")
    ts2 = TerminalServer("https://10.10.10.10", "ZZZ", "vmware")
    ts3 = TerminalServer("https://10.10.10.10", "MMM-Default", "vmware", True)
    ts1.add_domain("VMWARE")
    ts2.add_domain("VMWARE")
    ts3.add_domain("VMWARE")
    ms.set_default(ts3.Name)
    ms.add_terminal_server(ts1)
    ms.add_terminal_server(ts2)
    ms.add_terminal_server(ts3)
    print(ms.toJson())

# a choice of random problems in the json that the parser should catch
def missing_fields(email):
    val = random.randint(1,4)
    ms = ManagementServer("http://tc.canonical.com", "Landscape")
    ts3 = TerminalServer("https://10.10.10.10", "TS1-Default", "vmware", True)
    ts3.add_domain("VMWARE")
    ms.set_default(ts3.Name)

    # no ts's
    if val == 1:
        print(ms.toJson())
        return

    # no protocol in TS
    elif val == 2:
        ts3.Protocol = None

    # no url in TS
    elif val == 3:
        ts3.URL = None

    # no name in TS
    elif val == 4:
        ts3.Name = None

    ms.add_terminal_server(ts3)
    print(ms.toJson())

def big(email):
    ms = ManagementServer("http://tc.canonical.com", "Landscape")

    ts1 = TerminalServer("107.21.17.35", "XenServer", "ICA")
    ts2 = TerminalServer("http://1.2.3.4", "Citrix2", "ICA", True, 
        "fakeuser", "fakepassword")
    ts3 = TerminalServer("10.21.17.35", "Accenture", "freerdp", True, 
        "fakeuser")
    ts4 = TerminalServer("https://4.5.6.7", "Accenture 2", "freerdp", False)
    ts5 = TerminalServer("5.21.17.35", "VmWare Cloud", "vmware", False, 
        "fakeuser", "fakepassword")
    ts6 = TerminalServer("http://8.9.10.11", "Canonicloud", "vmware", True)

    ts1.add_domain("ASIA")
    ts2.add_domain("DOMAIN1")
    ts3.add_domain("EUROPE")
    ts4.add_domain("domain2")

    ms.add_terminal_server(ts1)
    ms.add_terminal_server(ts2)
    ms.add_terminal_server(ts3)
    ms.add_terminal_server(ts4)
    ms.add_terminal_server(ts5)
    ms.add_terminal_server(ts6)
    ms.set_default(ts4.Name)

    ams1 = AdditionalManagementServer("http://1.2.3.4", "AMS1")
    ams2 = AdditionalManagementServer("http://5.6.7.8", "Landscape - Accenture")
    ams3 = AdditionalManagementServer("http://10.10.10.10", "AMS3")
    ms.add_additional_management_server(ams1)
    ms.add_additional_management_server(ams2)
    ms.add_additional_management_server(ams3)

    print(ms.toJson())

def garbage(email):
    print("{, garbage''''''''}}}}}}}}{{{},garbage\n\r\n\n\n\n")

def random_string(email):
    numchars = random.randint(0,4096)
    print(''.join(random.choice(string.printable) for x in range(numchars)))

emailaddrs = {"b" : big,  #lots of domains/servers
              "c" : citrix,
              "d" : defaults,  #for easy testing of default ts
              "e" : error,
              "f" : freerdp,
              "g" : garbage,
              "m" : missing_fields,  #json missing some fields
              "r" : random_string,
              "v" : vmware,
}

def help():
    helpstr = "Email address to retrieve server info for.  Currently "\
        "the options are: "
    emaillist = ""
    for key in emailaddrs:
        emaillist += key + ", "
    helpstr += emaillist[:-2]
    return helpstr

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument('email', help=help())

    args = parser.parse_args()

    password = sys.stdin.read()

    if args.email in emailaddrs:
        if password != args.email:
            print_error("Invalid password")
            sys.exit(-1);
        else:
            emailaddrs[args.email](args.email)
    else:
        print_error("Invalid username")
        sys.exit(-1);