"""Player state and registry."""

from __future__ import annotations

import asyncio
import time
from dataclasses import dataclass, field
from typing import TYPE_CHECKING, Any

from telnetlib3 import GMCP, MSDP

from mudlib.caps import ClientCaps
from mudlib.entity import Entity

if TYPE_CHECKING:
    from mudlib.editor import Editor
    from mudlib.embedded_if_session import EmbeddedIFSession
    from mudlib.if_session import IFSession


@dataclass(eq=False)
class Player(Entity):
    """Represents a connected player."""

    writer: Any = None  # telnetlib3 TelnetWriter for sending output
    reader: Any = None  # telnetlib3 TelnetReader for reading input
    flying: bool = False
    mode_stack: list[str] = field(default_factory=lambda: ["normal"])
    caps: ClientCaps = field(default_factory=lambda: ClientCaps(ansi=True))
    editor: Editor | None = None
    if_session: IFSession | EmbeddedIFSession | None = None
    paint_mode: bool = False
    painting: bool = False
    paint_brush: str = "."
    prompt_template: str | None = None
    aliases: dict[str, str] = field(default_factory=dict)
    _last_msdp: dict = field(default_factory=dict, repr=False)
    _power_task: asyncio.Task | None = None
    kills: int = 0
    deaths: int = 0
    mob_kills: dict[str, int] = field(default_factory=dict)
    play_time_seconds: float = 0.0
    unlocked_moves: set[str] = field(default_factory=set)
    session_start: float = 0.0
    is_admin: bool = False

    @property
    def mode(self) -> str:
        """Current mode is the top of the stack."""
        return self.mode_stack[-1]

    @property
    def color_depth(self) -> str | None:
        """Best available color mode: truecolor, 256, 16, or None if no ANSI."""
        if not self.caps.ansi:
            return None
        return self.caps.color_depth

    async def send(self, message: str) -> None:
        """Send a message to the player via their telnet writer."""
        self.writer.write(message)
        await self.writer.drain()

    def send_gmcp(self, package: str, data: Any = None) -> None:
        """Send a GMCP message to the client (no-op if unsupported)."""
        if self.writer is not None:
            self.writer.send_gmcp(package, data)

    def send_msdp(self, variables: dict) -> None:
        """Send MSDP variables to the client (no-op if unsupported)."""
        if self.writer is not None:
            self.writer.send_msdp(variables)

    @property
    def gmcp_enabled(self) -> bool:
        """Whether this client has GMCP negotiated."""
        if self.writer is None:
            return False
        return bool(
            self.writer.local_option.enabled(GMCP)
            or self.writer.remote_option.enabled(GMCP)
        )

    @property
    def msdp_enabled(self) -> bool:
        """Whether this client has MSDP negotiated."""
        if self.writer is None:
            return False
        return bool(
            self.writer.local_option.enabled(MSDP)
            or self.writer.remote_option.enabled(MSDP)
        )


def accumulate_play_time(player: Player) -> None:
    """Accumulate play time since session start and reset timer.

    Args:
        player: The player to update
    """
    if player.session_start > 0:
        player.play_time_seconds += time.monotonic() - player.session_start
        player.session_start = time.monotonic()


# Global registry of connected players
players: dict[str, Player] = {}