import datetime
import math
import struct

from spacepackets.ecss import PusService, PusTelecommand
from tmtccmd.config import CmdTreeNode
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 DefaultPusQueueHelper


class OpCode:
    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"


def create_test_node() -> CmdTreeNode:
    node = CmdTreeNode("test", "Test Commands")
    node.add_child(CmdTreeNode(OpCode.PING, Info.PING))
    node.add_child(CmdTreeNode(OpCode.TRIGGER_EVENT, Info.TRIGGER_EVENT))
    node.add_child(CmdTreeNode(OpCode.PING_WITH_DATA, Info.PING_WITH_DATA))
    node.add_child(CmdTreeNode(OpCode.SCHEDULE_PING, Info.SCHEDULE_PING))
    return node


def build_test_commands(q: DefaultPusQueueHelper, cmd_path: str):
    if cmd_path == OpCode.PING:
        q.add_log_cmd("Sending PUS TC [17,1]")
        q.add_pus_tc(create_service_17_ping_command())
    if cmd_path == OpCode.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 cmd_path == OpCode.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 cmd_path == OpCode.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 _ 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
            )
        )