import logging
import datetime
import struct
import sys

from eive_tmtc.config.events import get_event_dict
from eive_tmtc.config.object_ids import get_object_ids
from eive_tmtc.pus_tm.defs import PrintWrapper
from eive_tmtc.pus_tm.verification_handler import generic_retval_printout
from eive_tmtc.tmtc.acs.subsystem import AcsMode
from tmtccmd.tc.pus_200_fsfw_mode import Mode
from tmtccmd.tc.pus_201_fsfw_health import FsfwHealth

from tmtccmd.tm import Service5Tm
from tmtccmd.util.tmtc_printer import FsfwTmTcPrinter
from tmtccmd.fsfw import EventInfo
from spacepackets.ccsds.time import CdsShortTimestamp

_LOGGER = logging.getLogger(__name__)


def handle_event_packet(raw_tm: bytes, printer: FsfwTmTcPrinter):
    pw = PrintWrapper(printer)
    tm = Service5Tm.unpack(data=raw_tm, time_reader=CdsShortTimestamp.empty())
    event_dict = get_event_dict()
    event_def = tm.event_definition
    info = event_dict.get(event_def.event_id)
    if info is None:
        _LOGGER.warning(f"Event ID {event_def.event_id} has no information")
        info = EventInfo()
        info.name = "Unknown event"
    obj_ids = get_object_ids()
    obj_id_obj = obj_ids.get(event_def.reporter_id)
    if obj_id_obj is None:
        _LOGGER.warning(f"Object ID 0x{event_def.reporter_id.hex(sep=',')} has no name")
        obj_name = event_def.reporter_id.hex(sep=",")
    else:
        obj_name = obj_id_obj.name
    generic_event_string = f"Object {obj_name} generated Event {info.name} (ID: {event_def.event_id:#04x}) at {tm.time_provider.as_date_time()}"
    _LOGGER.info(generic_event_string)
    pw.printer.file_logger.info(
        f"{datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')}: {generic_event_string}"
    )
    specific_handler = False
    if info.name == "MODE_TRANSITION_FAILED":
        reason = generic_retval_printout(event_def.param1)
        for string in reason:
            pw.dlog(f"Reason from event parameter 1: {string}")
            pw.dlog(f"Mode, sequence or table: {event_def.param2:#08x}")
        specific_handler = True
    if info.name == "SUPV_UPDATE_PROGRESS" or info.name == "WRITE_MEMORY_FAILED":
        additional_event_info = f"Additional info: {info.info}"
        context = (
            f"Progress Percent: {event_def.param1 >> 24 & 0xff} | Sequence Count: {event_def.param1 & 0xffff} "
            f"| Bytes Written: {event_def.param2}"
        )
        pw.dlog(additional_event_info)
        pw.dlog(context)
        specific_handler = True
    if info.name == "MODE_INFO":
        specific_handler = True
        mode_name = "Unknown"
        if obj_name == "ACS_SUBSYSTEM":
            acs_mode = AcsMode(event_def.param1)
            pw.dlog(f"ACS Mode: {acs_mode!r}")
        elif obj_name == "ACS_CONTROLLER_ID":
            mode_name = Mode(event_def.param1)
            submode = AcsMode(event_def.param2)
            pw.dlog(f"Mode: {mode_name!r}")
            pw.dlog(f"ACS Mode: {submode!r}")
        else:
            if event_def.param1 == Mode.OFF:
                mode_name = "Off"
            elif event_def.param1 == Mode.ON:
                mode_name = "On"
            elif event_def.param1 == Mode.NORMAL:
                mode_name = "Normal"
            elif event_def.param1 == Mode.RAW:
                mode_name = "Raw"
            pw.dlog(
                f"Mode Number {event_def.param1}, Mode Name {mode_name}, Submode: {event_def.param2}"
            )
    if info.name == "VERSION_INFO":
        specific_handler = True
        ver_major = (event_def.param1 >> 24) & 0xFF
        ver_minor = (event_def.param1 >> 16) & 0xFF
        ver_rev = (event_def.param1 >> 8) & 0xFF
        has_git_sha = bool(event_def.param1 & 0xFF)
        git_sha = ""
        if has_git_sha:
            p2_as_bytes = event_def.param2.to_bytes(4, sys.byteorder)
            git_sha = p2_as_bytes.decode("ascii")
        version_string = f"v{ver_major}.{ver_minor}.{ver_rev}"
        pw.dlog(f"Version {version_string}")
        if has_git_sha:
            pw.dlog(f"Git SHA first four letters: {git_sha}")
    if info.name == "CLOCK_SET":
        specific_handler = True
        old_time = event_def.param1
        new_time = event_def.param2
        old_time_dt = datetime.datetime.fromtimestamp(old_time, datetime.timezone.utc)
        new_time_dt = datetime.datetime.fromtimestamp(new_time, datetime.timezone.utc)
        pw.dlog(f"Old time (UTC): {old_time_dt}")
        pw.dlog(f"New time (UTC): {new_time_dt}")
    if info.name == "CLOCK_DUMP":
        specific_handler = True
        # param 1 is timeval seconds, param 2 is timeval subsecond milliseconds
        time = event_def.param1 + event_def.param2 / 1000.0
        time_dt = datetime.datetime.fromtimestamp(time, datetime.timezone.utc)
        pw.dlog(f"Current time: {time_dt}")
    if info.name == "HEALTH_INFO":
        specific_handler = True
        health = FsfwHealth(event_def.param1)
        pw.dlog(f"{obj_name}: {health!r}")
    if info.name == "CHANGING_MODE":
        mode = event_def.param1
        submode = event_def.param2
        pw.dlog(f"Mode Number {mode}, Submode: {submode}")
    if not specific_handler:
        additional_event_info = f"Additional info: {info.info} | P1: {event_def.param1} | P2: {event_def.param2}"
        pw.dlog(additional_event_info)
    if not specific_handler:
        # printer.handle_long_tm_print(packet_if=tm.pus_tm, info_if=tm.pus_tm)
        pass