"""Python parity for Wave 5-9 voice packs that were Rust-only:

  - wol         Wake-on-LAN magic packet to a MAC stored in memory
  - banter      pause / resume idle banter, fire-one
  - conversation summary + repeat from LLM history
  - ddg_answer  DuckDuckGo Instant Answer Q&A (no API key)

These piggyback on existing Python modules (memory_store, scheduler_store,
the openai client kept in main.py) and degrade gracefully — e.g. ddg_answer
opens a browser fallback when the API has no instant answer.

Each `do_*` is callable with the standard `(action, voice)` signature so
extensions.py can wire it identically to the Rust packs' yaml entries.
"""
import json
import random
import re
import socket
import struct
import urllib.parse
import urllib.request
import webbrowser
from typing import Callable, Optional, List

import memory_store


_speak: Optional[Callable[[str], None]] = None
_history: Optional[List[dict]] = None  # populated by main.py at startup


def set_speak(fn: Callable[[str], None]) -> None:
    global _speak
    _speak = fn


def set_history_ref(history_list: list) -> None:
    """main.py owns the live LLM `message_log`. Inject the reference here so
    conversation.summary/repeat can read it without re-importing main."""
    global _history
    _history = history_list


def _say(text: str) -> None:
    if _speak is not None:
        _speak(text)
    else:
        print(f"[wave59] {text}")


# ─── Wake-on-LAN ────────────────────────────────────────────────────────────


def _normalise_mac(mac: str) -> Optional[str]:
    """Return the canonical 12-hex-digits form or None if malformed.

    Accepts AA:BB:CC:DD:EE:FF, AA-BB-..., AABB.CCDD.EEFF, AABBCCDDEEFF.
    """
    cleaned = re.sub(r"[^0-9A-Fa-f]", "", mac or "").upper()
    if len(cleaned) != 12:
        return None
    return cleaned


def _build_magic_packet(mac_hex: str) -> bytes:
    mac_bytes = bytes.fromhex(mac_hex)
    return b"\xff" * 6 + mac_bytes * 16


def _send_magic_packet(packet: bytes) -> bool:
    """Best-effort UDP broadcast on port 9. Returns True on send success."""
    try:
        with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
            sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
            sock.sendto(packet, ("255.255.255.255", 9))
        return True
    except OSError as e:
        print(f"[wol] send failed: {e}")
        return False


def do_wol(action=None, voice=None, alias: str = "server") -> None:
    """Mirror of resources/commands/wol/wake.lua.

    Reads MAC from memory["wol_<alias>"] or env JARVIS_WOL_TARGET, normalises,
    and fires the magic packet. The alias is fixed to "server" here just like
    the Rust side — extending to multiple aliases is straightforward."""
    mac = memory_store.recall(f"wol_{alias}")
    if not mac:
        import os
        mac = os.environ.get("JARVIS_WOL_TARGET", "")
    if not mac:
        _say(f"Сэр, MAC-адрес не задан. Скажи: запомни wol_{alias}, а потом адрес.")
        return
    cleaned = _normalise_mac(mac)
    if cleaned is None:
        _say(f"Сэр, MAC-адрес в памяти выглядит подозрительно: {mac}")
        return
    ok = _send_magic_packet(_build_magic_packet(cleaned))
    if not ok:
        _say("Не получилось отправить пакет.")
        return
    pretty = "-".join(cleaned[i:i+2] for i in range(0, 12, 2))
    _say(f"Пакет отправлен на {pretty}")


# ─── Idle banter ────────────────────────────────────────────────────────────
#
# Python doesn't ship a background idle-banter thread (the Rust one does).
# These handlers expose just the user-facing actions so the same voice
# phrases work on both sides. A real Python bg-thread would mirror
# crates/jarvis-core/src/idle_banter.rs — left as future work, since the
# Python edition is typically run alongside the Rust daemon anyway.

_BANTER_PAUSED = False

_BANTER_LINES = [
    "Системы в норме, сэр. Всё под контролем.",
    "Я здесь, если что, сэр. Никуда не делся.",
    "Сэр, мне иногда кажется, что я думаю. Возможно, мне это только кажется.",
    "Сэр, статус: чашка кофе крайне рекомендована.",
    "К вашим услугам, сэр. Голос звучит немного хрипло, но это исправимо.",
    "Жду команд, сэр. У меня есть весь день.",
]


def do_banter_fire(action=None, voice=None) -> None:
    if _BANTER_PAUSED:
        _say("В этот раз без комментариев, сэр.")
        return
    _say(random.choice(_BANTER_LINES))


def do_banter_pause(action=None, voice=None) -> None:
    global _BANTER_PAUSED
    _BANTER_PAUSED = True
    _say("Молчу, сэр.")


def do_banter_resume(action=None, voice=None) -> None:
    global _BANTER_PAUSED
    _BANTER_PAUSED = False
    _say("Хорошо, сэр. Возвращаюсь к комментариям.")


# ─── Conversation summary / repeat ──────────────────────────────────────────


def do_conversation_summary(action=None, voice=None) -> None:
    """LLM-driven recap of the last ~12 turns from main.py's message_log.

    Offline-safe: if GROQ_TOKEN missing or history empty, returns a graceful
    short message instead of attempting a network call.
    """
    if _history is None or len(_history) <= 1:
        # _history[0] is the system prompt; need at least one real turn
        _say("Мы пока ещё ни о чём не говорили, сэр.")
        return

    # last 12 real turns (skip system at [0])
    turns = _history[-12:] if len(_history) > 12 else _history[1:]
    if not turns:
        _say("Мы пока ещё ни о чём не говорили, сэр.")
        return

    import os
    token = os.environ.get("GROQ_TOKEN", "")
    if not token:
        # Offline fallback — speak the last user message
        last_user = next(
            (m for m in reversed(turns) if m.get("role") == "user"),
            None,
        )
        if last_user:
            _say("Без сети, сэр. Последний раз вы спросили: " + last_user.get("content", "")[:200])
        else:
            _say("Без сети, сэр.")
        return

    try:
        from openai import OpenAI
        client = OpenAI(
            api_key=token,
            base_url=os.environ.get("GROQ_BASE_URL", "https://api.groq.com/openai/v1"),
        )
        transcript_lines = []
        for m in turns:
            who = "Я" if m.get("role") == "assistant" else "Пользователь"
            transcript_lines.append(who + ": " + (m.get("content") or ""))
        sys_msg = (
            "Ты — J.A.R.V.I.S. По ниже идущему диалогу с пользователем составь короткое "
            "напоминание (1-3 предложения), о чём шла речь. Говори от первого лица в "
            "стиле британского дворецкого. Не пересказывай дословно — сожми суть."
        )
        resp = client.chat.completions.create(
            model=os.environ.get("GROQ_MODEL", "llama-3.3-70b-versatile"),
            messages=[
                {"role": "system", "content": sys_msg},
                {"role": "user", "content": "\n".join(transcript_lines)},
            ],
            max_tokens=200,
            temperature=0.4,
        )
        text = (resp.choices[0].message.content or "").strip()
        if not text:
            _say("Не смог разобрать ответ.")
            return
        _say(text)
    except Exception as e:
        print(f"[conversation] LLM call failed: {e}")
        _say("LLM не отвечает.")


def do_conversation_repeat(action=None, voice=None) -> None:
    if _history is None:
        _say("Я ещё ничего не говорил, сэр.")
        return
    last = next(
        (m for m in reversed(_history) if m.get("role") == "assistant"),
        None,
    )
    if last is None:
        _say("Я ещё ничего не говорил, сэр.")
        return
    _say(last.get("content") or "")


# ─── DuckDuckGo Instant Answer ──────────────────────────────────────────────


_DDG_TRIGGERS = [
    "что такое", "кто такой", "кто такая",
    "расскажи про", "расскажи о",
    "найди информацию о", "найди информацию про",
    "поищи в интернете", "поищи в сети",
    "погугли что такое",
    "what is", "who is", "tell me about", "look up", "search the web for",
]


def _strip_ddg_trigger(phrase: str) -> str:
    p = (phrase or "").lower().strip()
    for t in _DDG_TRIGGERS:
        if p.startswith(t):
            return p[len(t):].strip()
    return p


def do_ddg_answer(action=None, voice=None) -> None:
    query = _strip_ddg_trigger(voice or "")
    if not query:
        _say("Что искать?")
        return
    url = ("https://api.duckduckgo.com/?q="
           + urllib.parse.quote(query, safe="")
           + "&format=json&no_html=1&skip_disambig=1")
    try:
        req = urllib.request.Request(url, headers={"User-Agent": "Mozilla/5.0 J.A.R.V.I.S."})
        with urllib.request.urlopen(req, timeout=8) as resp:
            data = json.loads(resp.read().decode("utf-8"))
    except (urllib.error.URLError, OSError, json.JSONDecodeError, TimeoutError) as e:
        print(f"[ddg] fetch failed: {e}")
        _say("DDG не отвечает.")
        return

    answer = (data.get("AbstractText") or "").strip()
    if not answer:
        answer = (data.get("Answer") or "").strip()
    if not answer:
        answer = (data.get("Definition") or "").strip()
    if not answer:
        related = data.get("RelatedTopics") or []
        for r in related:
            t = (r or {}).get("Text", "").strip()
            if t:
                answer = t
                break
    if not answer:
        fallback = "https://duckduckgo.com/?q=" + urllib.parse.quote(query, safe="")
        try:
            webbrowser.open(fallback)
        except OSError:
            pass
        _say(f"Ничего конкретного не нашёл, открываю поиск по запросу: {query}")
        return

    if len(answer) > 320:
        answer = answer[:300] + "…"
    _say(answer)