#!/usr/bin/env python3

"""Socket Client Gemini Telescope implementation
To be used as a concrete class to system control a Gemini telescope
"""

# Standard library imports
#import socket
#import logging
import os
import sys
import time

# Third party imports
# None

# Local application imports
sys.path.append('../../..')

# My parent class and exceptions
from device_controller.abstract_component.device_controller import (
    printd,
    DeviceController,
    Gen2NatCmds, 
    #Cmd,
    UnknownNativeCmdException, UnknownGenericCmdArgException
)

#from src.client.socket_client_telescope_abstract import Position, UnknownNativeCmdException, TimeoutException, SocketClientTelescopeAbstract
##from src_socket.client.socket_client_telescope_abstract import *

# My device controller component(s)
#from device_controller.abstract_component.mount import *
from device_controller.abstract_component.mount import DC_Mount

# My simulator
from device_controller.concrete_component.gemini.gemini_simulator import DS_Gemini

'''
# Default timeouts
TIMEOUT_SEND = 10
TIMEOUT_RECEIVE = 10
'''

MY_DEVICE_CHANNEL_BUFFER_SIZE = 1024

''' Moved inside the Protocol class
# COMMON CONSTANTS WITH SERVER
TERMINATOR = '\x00'
COMMAND5 = '050000'
#COMMAND6_SIMPLE = '\x00\x06'
COMMAND6 = '\x00\x06\x00'
COMMAND6_SIMPLE = '6'
'''


'''
def printd(*args, **kwargs):
    if os.environ.get('PYROS_DEBUG')=='1': print(*args, **kwargs)
'''

class DC_MountBis(DC_Mount):
    pass


#class DeviceControllerTelescopeGemini(DC_Mount):
#class DC_Gemini(DC_Mount):
class DC_Gemini(DeviceController):


    # Gemini communication protocol
    # @override
    class Protocol:

        # Default timeouts
        TIMEOUT_SEND = 10
        TIMEOUT_RECEIVE = 10

        # COMMON CONSTANTS WITH SERVER
        TERMINATOR = '\x00'
        COMMAND5 = '050000'
        #COMMAND6_SIMPLE = '\x00\x06'
        COMMAND6 = '\x00\x06\x00'
        COMMAND6_SIMPLE = '6'

        # STAMP : 
        # 00 00 00 00 00 00 00' (8 bytes from '00' to 'FF', 1st one is LOW BYTE)
        # ex: 01 + STAMP = 01 00 00 00 00 00 00 00' (8 bytes from '00' to 'FF', 1st one is LOW BYTE)
        #STAMP_FILLER = '00000000000000' 
        #MY_FULL_STAMP = MYSTAMP + STAMP_FILLER
        # Initialize request number (will be increased at each request)
        request_num = 0
        # Request number stands on 4 digits (from 0001 to 9999)
        request_num_nb_digits = 4
        # For 4 digits, we should get the format '{:04d}':
        request_num_format = '{:0'+str(request_num_nb_digits)+'d}'
        # Stamp filler with 0
        STAMP_LENGTH = 8
        STAMP_FILLER = '0' * (STAMP_LENGTH - request_num_nb_digits)

        # @override
        @classmethod
        def formated_cmd(cls, cmd:str, values_to_set:str=None)->str:
            if values_to_set != None: 
                for value_to_set in values_to_set:
                    cmd += value_to_set
            if cmd not in (cls.COMMAND6, cls.COMMAND5):
                cmd += '#'
                if cmd not in ('bC#','bW#','bR#'): 
                    cmd=':'+cmd
            return cmd

        # @override
        #def encapsulate_data_to_send(self, command:str):
        #def encap_data_to_send(self, command:str):
        @classmethod
        def encap(cls, command:str):
            r''' Encapsulate useful data to be ready for sending

            If data is "complete" (with stamp, and well formatted), send it as is
            Otherwise, add stamp and format it

            3 types of commands:
            - TYPE1: '06' or '050000'
            - TYPE2: ':cde#' (mainly ':??#' - i.e : ':GD#', ':GR#', ...)
            - TYPE3: 'b?#' (bC# = Cold Start, bW# = selecting Warm Start, bR# = selecting Warm Restart)

            :Examples:
            >>> tele = DC_Gemini("localhost", 11110)
            Starting device simulator on (host:port):  localhost:11110
            >>> tele.encap(':GD#')
            ('00010000', '00010000:GD#\x00')
            >>> tele.encap(':GR#')
            ('00020000', '00020000:GR#\x00')
            >>> tele.close()

            # ne marche pas => '00010000:GD#\x00'
            '''

            ####return bytes(self.MYSTAMP + self.STAMP_FILLER + data + "\n", "utf-8")
            
            # TYPE1
            #printd("command to encapsulate is", repr(command))
            
            if command == cls.COMMAND6_SIMPLE: command = cls.COMMAND6
            
            if command not in (cls.COMMAND6, cls.COMMAND5):
                # TYPE2 or 3
                #has_starting_car = data.find(':') > -1
                if len(command) < 3: raise UnknownNativeCmdException(command)
                if not (command[-1]=='#'): raise UnknownNativeCmdException(command)
                if not (command[0]==':') and command not in ('bC#','bW#','bR#'): raise UnknownNativeCmdException(command)
                #stamp,command = data.split(':',1)
            
            #if command.find('#')>-1: command,_ = command.split('#',1)
            cls.request_num += 1
            # Format to request_num_nb_digits (4) digits
            request_num_str = cls.request_num_format.format(cls.request_num)
            cls.last_stamp = request_num_str + cls.STAMP_FILLER
            
            #if command == COMMAND6_SIMPLE: command = COMMAND6_REAL
            data_encapsulated = cls.last_stamp + command + cls.TERMINATOR
            #return super().encap(data_encapsulated)
            #return self._my_channel.encap(data_encapsulated)
            #return data_encapsulated
            return cls.last_stamp, data_encapsulated
    
            #return bytes(data + "\n", "utf-8")
            ####return bytes(self.MYSTAMP + self.STAMP_FILLER + data + "\n", "utf-8")
    
        # @override
        #def uncap_received_data(self, data_received:str)->str:
        #def uncap(cls, data_received:str)->str:
        @classmethod
        def uncap(cls, dcc_name:str, stamp:str, data_received:str)->str:
            #data_received = super().uncap(data_received_bytes)
            ##data_received = self._my_channel.uncap(data_received_bytes)
    
            #>>> tele.uncap(b'001700001\x00')
    
            r"""
                Extract useful data from received raw data 
    
            >>> tele = DC_Gemini("localhost", 11110)
            Starting device simulator on (host:port):  localhost:11110
            >>> tele.last_stamp = '00170000'
            >>> tele.uncap('00170000', '001700001#')
            '1'
            >>> tele.close()
            """

            printd("\n*********** DEBUG IS ON ***********\n")
            printd(f"(gemini protoc used from {dcc_name}) data_received_bytes type is", type(data_received))
            printd(f"(gemini protoc used from {dcc_name}) data received is", data_received)
            ##data_received = data_received_bytes.decode()
            #printd("data_received is", data_received)
            # Remove STAMP (and \n at the end):
            #useful_data = data_received.split(self.MY_FULL_STAMP)[1][:-1]
            #useful_data = data_received.split(cls.last_stamp)[1][:-1]
            printd(f"*** (gemini protoc used from {dcc_name}) Last stamp is ***", cls.last_stamp, ", data received is", data_received)
            '''
            # Normal case: LAST stamp found
            if cls.last_stamp in data_received:
                useful_data = data_received.split(cls.last_stamp)[1][:-1]
            # Bad case: LAST stamp NOT found => try PREVIOUS stamp
            else:
                request_num_str = cls.request_num_format.format(cls.request_num-1)
                temp_last_stamp = request_num_str + cls.STAMP_FILLER
                if temp_last_stamp in data_received:
                    useful_data = data_received.split(temp_last_stamp)[1][:-1]
                else:
                    raise Exception("BAD STAMP")
            '''
            if stamp not in data_received:
                    raise Exception("BAD STAMP, this is not the answer to my request, but another request's")
            else:
                useful_data = data_received.split(stamp)[1][:-1]
            # Remove '#' at the end, if exists
            if useful_data[-1] == '#': useful_data = useful_data[:-1]
            return useful_data

        # end of class Protocol




    #data = " ".join(sys.argv[1:])
    #data_to_send = bytes(data + "\n", "utf-8")

    ''' Commands dictionary
    '''

    #
    # VERSION 1 : 1 gros dictionnaire par commande
    # CON : long et error prone
    #

    get_ack = {
        'generic_name': 'get_ack',
        'native_name': Protocol.COMMAND6,
        'params': {},
        # ready
        'final_device_responses': {
            'G' : 'after completed startup',
            'B' : 'while the initial startup message is being displayed (new in L4)',
            'b' : 'while waiting for the selection of the Startup Mode',
            'S' : 'during a Cold Start (new in L4)',
        },
        'final_simul_response': 'G',
        'immediate_response': {
            'ready' : 'gg',
            'wait' : 10,
            'error' : '',
        },
        # native error codes
        'errors': {
            '0' : 'pb 0 ...',
            '1' : 'pb 1 ...',
        }
    }
    get_ra = {
        'generic_name': 'set_ra',
        'native_name': 'GR',
        'params': {'ra':'', },
        # ready
        'final_device_responses': [],
        'final_simul_response': '15:01:49',
        'immediate_response': {
            'ready' : 'gg',
            'wait' : 10,
            'error' : '',
        },
        # native error codes
        'errors': {
            '0' : 'pb 0 ...',
            '1' : 'pb 1 ...',
        }
    }

    #
    # VERSION 2 : on utilise la methode build_cmd() en précisant key=val à chaque paramètre (sauf les paramètres vides, par défaut)
    # PRO: court, pas d'erreur possible
    # CON: appel de fonction

    mes_commandes = Gen2NatCmds({})
    get_ack = mes_commandes.build_cmd(
        generic_name = 'get_ack', 
        native_name = Protocol.COMMAND6,
        #params = {},
        final_device_responses={
            'G': 'after completed startup',
            'B': 'while the initial startup message is being displayed (new in L4)',
            'b': 'while waiting for the selection of the Startup Mode',
            'S': 'during a Cold Start (new in L4)',
        },
        final_simul_response='G',
        immediate_responses={
            'ready': 'gg',
            'wait': 10,
            'error': '',
        },
        errors = {
            '0': 'pb 0 ...',
            '1': 'pb 1 ...',
        }
    )
    mes_commandes.add_cmd(get_ack)

    #
    # VERSION 3 (+court): on utilise la methode build_cmd() SANS préciser le nom des param => il faut alors les rentrer TOUS
    #

    get_ack = mes_commandes.build_cmd(
        'get_ack', 
        Protocol.COMMAND6,
        {},
        {
            'G' : 'after completed startup',
            'B' : 'while the initial startup message is being displayed (new in L4)',
            'b' : 'while waiting for the selection of the Startup Mode',
            'S' : 'during a Cold Start (new in L4)',
        },
        'G', 
        {
            'ready' : 'gg',
            'wait' : 10,
            'error' : '',
        },
        {
            '0' : 'pb 0 ...',
            '1' : 'pb 1 ...',
        }
    )

    # Commande vide
    cmd2 = mes_commandes.build_cmd('cmd2_generic', 'cmd2_native')

    #
    # OPTIMISATION possible pour les commandes get et set : 
    # on construit les 2 en même temps, et ca génère 2 commandes différentes (un get et un set)
    #
    get_dec, set_dec = mes_commandes.build_cmd_get_set(generic_name='dec', native_get_name='GD', native_set_name='Sd')
    do_init = mes_commandes.build_cmd_do('do_init', 'titi')


    #
    # VERSION 4 : Command class (Cmd)
    #
    '''
    get_ack2 = Cmd(
        #generic_name = 
        'get_ack2', 
        #native_name = 
        Protocol.COMMAND6,
        {},
        {
            'G' : 'after completed startup',
            'B' : 'while the initial startup message is being displayed (new in L4)',
            'b' : 'while waiting for the selection of the Startup Mode',
            'S' : 'during a Cold Start (new in L4)',
        },
        'G', 
        {
            'ready' : 'gg',
            'wait' : 10,
            'error' : '',
        },
        {
            '0' : 'pb 0 ...',
            '1' : 'pb 1 ...',
        }
    )
    '''


    # Utilisation, affichage
    mes_commandes.add_cmd(get_ack)
    #mes_commandes.add_cmd2(get_ack2)
    mes_commandes.add_cmd(cmd2)
    mes_commandes.add_cmd(set_ra)

    print("******************************")
    print("Mes commandes")
    mes_commandes.print_mes_commandes()
    print("******************************")

    GEN2NAT_CMDS_GENERAL = {

        # Possible answers:
        # - B# while the initial startup message is being displayed (new in L4),
        # - b# while waiting for the selection of the Startup Mode,
        # - S# during a Cold Start (new in L4),
        # - G# after completed startup
        'get_ack': [Protocol.COMMAND6, 'G', ['G', 'B','b','S']],

        # General commands for the Gemini controller
        'get_date': ['GC', '10/10/19'],
        'set_date': ['SC'],
        'get_time': ['GL', '10:20:36'],
        'set_time': ['SL'],
    }
    GEN2NAT_CMDS_MOUNT = {

        # GET & SET commands

        # RA-DEC (p109-110)
        #:Sr<hh>:<mm>.<m># or :Sr<hh>:<mm>:<ss>#
        #Sets the object's Right Ascension and the object status to "Not Selected". The :Sd# command has to follow to complete the selection. The subsequent use of the :ON...# command is recommended
        #:Sd{+-}<dd>{*°}<mm># or :Sd{+- }<dd>{*°:}<mm>:<ss>
        #Sets the object's declination. It is important that the :Sr# command has been send prior. Internal calculations are done that may take up to 0.5 seconds. If the coordinate selection is valid the object status is set to "Selected"
        #'RADEC': [('GR','GD'), ''],
        #'ra': ['GR', None, 'Sr', None, 'commentaire'],
        ##get_ra.,
        'get_ra': ['GR', '15:01:49'],
        'set_ra': ['Sr'],
        'get_dec': ['GD', '+12:29'],
        'set_dec': ['Sd'],
        # get_radec and set_radec are already defined in abstract class

        'get_timezone': ['GG', "+00"],
        'set_timezone': ['SG', '1'],

        # ALT-AZ (p?)
        "get_alt": ['GA'],
        "get_az": ['GZ'],
        #"ALT-AZ": [('GA','GZ'), ''],

        # LONG-LAT
        "get_long": ['Gg', '+10'],
        "set_long": ['Sg'],
        "get_lat": ['Gt', '+45:00:00'],
        "set_lat": ['St'],
        #"LONGLAT": [('Gg','Gt'), ''],

        "get_hangle": ['GH'],

        'get_vel': ['Gv', 'T'],
        #"get_maxvel": ['Gv'],

        
        # DO commands
        # defined in abstract class:
        #'do_init': ['do_init'],
        'do_park': ['hP'],
        'do_warm_start': ['bW'],
        'do_prec_refr': ['p3'],

        # for test only
        'gem_only': [],

        'do_move': ['MS', '0', '1Object below horizon.', '2No object selected.', '3Manual Control.', '4Position unreachable.', '5Not aligned.', '6Outside Limits.' ],    
        'do_movenorth': ['Mn'],
        'do_movesouth': ['Ms'],
        'do_movewest': ['Mw'],
        'do_moveeast': ['Me'],
        'do_stop': ['Q'],
    }
    GEN2NAT_CMDS = {
        # My GENERAL commands
        **GEN2NAT_CMDS_GENERAL,

        # SPECIFIC commands for my DCCs
        'DC_Mount' : GEN2NAT_CMDS_MOUNT
    }


    # Gemini is using UDP
    #def __init__(self, device_host:str="localhost", device_port:int=11110, channel=socket, DEBUG=False):
    #def __init__(self, device_host:str="localhost", device_port:int=11110, DEBUG=False):
    #def __init__(self, device_host:str="localhost", device_port:int=11110, dcc_list=[], DEBUG=False):
    def __init__(self, device_host:str="localhost", device_port:int=11110, dcc_list=[]):
        ##super().__init__(device_host, device_port, "SOCKET-UDP", 1024, DEBUG)
        #super().__init__(device_host, device_port, "SOCKET-UDP", MY_DEVICE_CHANNEL_BUFFER_SIZE, protoc=self.Protocol, gen2nat_cmds=self.GEN2NAT_CMDS, device_sim=DS_Gemini, DEBUG=DEBUG)
        super().__init__(device_host, device_port, "SOCKET-UDP", MY_DEVICE_CHANNEL_BUFFER_SIZE, protoc=self.Protocol, gen2nat_cmds=self.GEN2NAT_CMDS, device_sim=DS_Gemini)

        '''
        Initialize my dcc(s), passing them the SAME parameters as I use :
            - device_host, device_port,
            - self._my_channel (passed by superclass), MY_DEVICE_CHANNEL_BUFFER_SIZE, 
            - self.Protocol,
            - self.GEN2NAT_CMDS (subset of my commands related to the dcc), 
            - NO SIMULATOR (because my dccs will use the same as me and I have already launched it),
            - DEBUG
        '''
        # TODO: utiliser dcc_list
        # Default list of DCCs (if not given)
        if not dcc_list: dcc_list = [DC_Mount, DC_MountBis]
        # @override superclass empty list of dc components
        self.set_dc_components( 
            [
                #DC_Mount(device_host, device_port, self._my_channel, 1024, protoc= self.Protocol, gen2nat_cmds= self.GEN2NAT_CMDS['DC_Mount'], device_sim=None, DEBUG=DEBUG),
                DC_Mount(device_host, device_port, self._my_channel, MY_DEVICE_CHANNEL_BUFFER_SIZE, protoc=self.Protocol, gen2nat_cmds=self.GEN2NAT_CMDS_MOUNT, device_sim=None),
                DC_MountBis(device_host, device_port, self._my_channel, MY_DEVICE_CHANNEL_BUFFER_SIZE, protoc=self.Protocol, gen2nat_cmds=self.GEN2NAT_CMDS_MOUNT, device_sim=None),
            ]
        )



    # @overwrite
    #def get_ack(self): return self.execute_native_cmd(COMMAND6, 'G')
    #def do_warm_start(self): return self.execute_native_cmd('bW')

    #TODO: déplacer dans parent avec nouvelles commandes set_speed_slew, set_speed_average, ...
    # @override
    def set_speed(self, speed_rate):
        native_cmd = None
        # quick
        if speed_rate == "slew": native_cmd = 'RS'
        # average
        if speed_rate == "average": native_cmd = 'RM'
        # slow
        if speed_rate == "center": native_cmd = 'RC'
        # very slow
        if speed_rate == "guide": native_cmd = 'RG'
        if not native_cmd: raise UnknownGenericCmdArgException(__name__, speed_rate)
        return self.execute_unformated_native_cmd(native_cmd)


if __name__ == "__main__":
    
    import doctest
    doctest.testmod()
    exit()
    """
    # Classic usage:
    #tele_ctrl = SocketClient_Gemini(HOST, PORT)
    # More elegant usage, using "with":
    ##with SocketClientTelescopeGemini("localhost", 11110, DEBUG=False) as tele_ctrl:
    with TelescopeControllerGemini("localhost", 11110, DEBUG=False) as tele_ctrl:
        
        # 0) CONNECT to server (only for TCP, does nothing for UDP)
        tele_ctrl._connect_to_server()
        
        #tele_ctrl.config()
        
        # Send some commands to the Telescope
        #pos = tele_ctrl.get_position()
        
        # Do EXPERT mode execution
        while True:
            
            # 1) SEND REQUEST data to server
            # saisie de la requête au clavier et suppression des espaces des 2 côtés
            data = input("(EXPERT MODE) REQUEST TO SERVER [ex: ':GD#' (Get Dec), ':GR#' (Get RA)']: ").strip()
            # test d'arrêt
            if data == "": break
            #data_to_send = bytes(data + "\n", "utf-8")
            tele_ctrl.send_data(data)
            #mysock.sendto("%s" % data, (HOST, PORT))
            #printd("Sent: {}".format(data))
    
            # 2) RECEIVE REPLY data from server
            data_received = tele_ctrl.receive_data()
            #reponse, adr = mysock.recvfrom(buf)
            #printd("Received: {}".format(data_received))
            #printd("Useful data received: {}".format(data_useful))
            printd('\n')

        #tele_ctrl.close()
    """