import struct
import datetime
import math

from spacepackets.ecss import PusService, PusTelecommand
from tmtccmd.config import CoreServiceList
from tmtccmd.config.tmtc import (
    OpCodeEntry,
    TmtcDefinitionWrapper,
    tmtc_definitions_provider,
)
from tmtccmd.pus.s11_tc_sched import create_time_tagged_cmd
from tmtccmd.pus.s17_test import create_service_17_ping_command
from tmtccmd.tmtc import service_provider
from tmtccmd.tmtc.decorator import ServiceProviderParams


class OpCodes:
    PING = "ping"
    TRIGGER_EVENT = "trig_event"
    PING_WITH_DATA = "ping_with_data"
    SCHEDULE_PING = "sched_ping"


class Info:
    PING = "Simple Ping and Connection Test"
    TRIGGER_EVENT = "Trigger an event"
    PING_WITH_DATA = "Ping with data. Size of sent data is sent back"
    SCHEDULE_PING = "Schedule a ping"


@tmtc_definitions_provider
def add_test_defs(defs: TmtcDefinitionWrapper):
    oce = OpCodeEntry()
    oce.add(keys=OpCodes.PING, info=Info.PING)
    oce.add(keys=OpCodes.TRIGGER_EVENT, info=Info.TRIGGER_EVENT)
    oce.add(keys=OpCodes.PING_WITH_DATA, info=Info.PING_WITH_DATA)
    oce.add(keys=OpCodes.SCHEDULE_PING, info=Info.SCHEDULE_PING)

    defs.add_service(
        name=CoreServiceList.SERVICE_17_ALT,
        info="PUS 17 Test Service",
        op_code_entry=oce,
    )


@service_provider(CoreServiceList.SERVICE_17_ALT)
def pack_test_command(p: ServiceProviderParams):
    info = p.info
    q = p.queue_helper
    if info.op_code == OpCodes.PING:
        q.add_log_cmd("Sending PUS TC [17,1]")
        q.add_pus_tc(create_service_17_ping_command())
    if info.op_code == OpCodes.TRIGGER_EVENT:
        q.add_log_cmd("Sending PUS TC Event Trigger [17, 128]")
        q.add_pus_tc(PusTelecommand(service=PusService.S17_TEST, subservice=128))
    if info.op_code == OpCodes.SCHEDULE_PING:
        q.add_log_cmd("Sending scheduled PUS ping")
        # Generate a UNIX timestamp 30 seconds in the future using the datetime API with a UTC timezone
        now = datetime.datetime.now(tz=datetime.timezone.utc)
        second_offset_to_now = input("Please specify offset to now in seconds: ")
        now += datetime.timedelta(seconds=int(second_offset_to_now))
        unix_stamp = struct.pack("!I", math.floor(now.timestamp()))
        print(f"Sending ping scheuled at {now}")
        ping = PusTelecommand(service=PusService.S17_TEST, subservice=128)
        q.add_pus_tc(
            create_time_tagged_cmd(
                release_time=unix_stamp,
                tc_to_insert=ping,
            )
        )
    if info.op_code == OpCodes.PING_WITH_DATA:
        q.add_log_cmd("Sending Ping With Data, Size Reported Back [17, 129]")
        while True:
            data_size = int(input("Please specify data size [0-1024]: "))
            if data_size < 0 or data_size > 1024:
                print("Invalid data size")
            break
        dummy_data = bytearray()
        next_byte = True
        for i in range(data_size):
            dummy_data.append(int(next_byte))
            next_byte = not next_byte
        q.add_pus_tc(
            PusTelecommand(
                service=PusService.S17_TEST, subservice=130, app_data=dummy_data
            )
        )