from typing import Optional
import struct

from eive_tmtc.config.definitions import CustomServiceList
from eive_tmtc.pus_tc.devs.pdec_handler import CommandId
from spacepackets.ecss import PusTelecommand
from tmtccmd.config import TmtcDefinitionWrapper, OpCodeEntry
from tmtccmd.config.tmtc import tmtc_definitions_provider

from tmtccmd.tc import DefaultPusQueueHelper
from tmtccmd.util import ObjectIdU32
from tmtccmd.tc.pus_200_fsfw_modes import Mode, pack_mode_data, Subservice
import eive_tmtc.config.object_ids as oids
from eive_tmtc.config.object_ids import get_object_ids

RTD_IDS = [
    oids.RTD_0_PLOC_HSPD,
    oids.RTD_1_PLOC_MISSIONBRD,
    oids.RTD_2_4K_CAM,
    oids.RTD_3_DAC_HSPD,
    oids.RTD_4_STR,
    oids.RTD_5_RW1_MX_MY,
    oids.RTD_6_DRO,
    oids.RTD_7_SCEX,
    oids.RTD_8_X8,
    oids.RTD_9_HPA,
    oids.RTD_10_PL_TX,
    oids.RTD_11_MPA,
    oids.RTD_12_ACU,
    oids.RTD_13_PLPCDU_HSPD,
    oids.RTD_14_TCS_BRD,
    oids.RTD_15_IMTQ,
]


class CommandId:
    WRITE_CONFIG = 6


class OpCode:
    ON = ["0", "on"]
    OFF = ["1", "off"]
    NORMAL = ["2", "normal"]
    WRITE_CONFIG = ["3", "Write config"]


class Info:
    ON = "Switch handler on"
    OFF = "Switch handler off"
    NORMAL = "Switch handler normal"
    WRITE_CONFIG = "Write config"


@tmtc_definitions_provider
def specify_rtd_cmds(defs: TmtcDefinitionWrapper):
    oce = OpCodeEntry()
    oce.add(keys=OpCode.ON, info=Info.ON)
    oce.add(keys=OpCode.NORMAL, info=Info.NORMAL)
    oce.add(keys=OpCode.OFF, info=Info.OFF)
    oce.add(keys=OpCode.WRITE_CONFIG, info=Info.WRITE_CONFIG)
    defs.add_service(
        name=CustomServiceList.RTD.value, info="RTD commands", op_code_entry=oce
    )


def pack_rtd_commands(
    op_code: str, object_id: Optional[ObjectIdU32], q: DefaultPusQueueHelper
):
    if object_id is not None and object_id not in RTD_IDS:
        print("Specified object ID not a valid RTD ID")
        object_id = None
    if object_id is None:
        tgt_rtd_idx = prompt_rtd_idx()
        object_id_dict = get_object_ids()
        object_id = object_id_dict.get(RTD_IDS[tgt_rtd_idx])
    if op_code in OpCode.ON:
        app_data = pack_mode_data(object_id=object_id.as_bytes, mode=Mode.ON, submode=0)
        q.add_pus_tc(
            PusTelecommand(
                service=200, subservice=Subservice.TC_MODE_COMMAND, app_data=app_data
            )
        )
    if op_code in OpCode.NORMAL:
        app_data = pack_mode_data(
            object_id=object_id.as_bytes, mode=Mode.NORMAL, submode=0
        )
        q.add_pus_tc(
            PusTelecommand(
                service=200, subservice=Subservice.TC_MODE_COMMAND, app_data=app_data
            )
        )
    if op_code in OpCode.OFF:
        app_data = pack_mode_data(
            object_id=object_id.as_bytes, mode=Mode.OFF, submode=0
        )
        q.add_pus_tc(
            PusTelecommand(
                service=200, subservice=Subservice.TC_MODE_COMMAND, app_data=app_data
            )
        )
    if op_code in OpCode.WRITE_CONFIG:
        command = object_id.as_bytes + struct.pack('!I', CommandId.WRITE_CONFIG)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))


def prompt_rtd_idx():
    while True:
        rtd_idx = input("Please specify RTD index [0-15]: ")
        if not rtd_idx.isdigit():
            print("Invalid input")
            continue
        rtd_idx = int(rtd_idx)
        if rtd_idx < 0 or rtd_idx > 15:
            print("Invalid device index")
            continue
        return rtd_idx