"""The scouting desk — proactive poker recall slid into Lyra's context before she
replies, the way a broadcast stats desk hands the commentator a note.

Two detectors run on the incoming message: known NAMES (deterministic) and
physical DESCRIPTORS (fuzzy, via the identity resolver). A confident hit becomes a
`SCOUTING DESK` system note she can cite; an ambiguous descriptor is filed to the
review queue instead of interrupting. Everything here is best-effort and wrapped
by the caller — it must never break a chat turn. Silence is the default.

See docs/SCOUTING_DESK.md.
"""
from __future__ import annotations

import re

from lyra import clock, logbus, poker

# Cues that a span names a *person at the table* worth resolving as a villain.
_ROLE = r"(?:guy|dude|man|kid|reg|player|villain|fish|whale|nit|lag|tag|maniac)"
_DESC_PATTERNS = (
    re.compile(rf"\bthe ([\w][\w\s'’-]{{2,28}}?) {_ROLE}\b", re.I),
    re.compile(rf"\b{_ROLE} (?:with|in|who has|sporting|rocking) (?:the |a |an )?([\w\s'’-]{{3,28}})", re.I),
)
_MIN_NAME = 3


def _named_hits(msg: str) -> list[int]:
    """Ids of known *named* villains whose name appears as a word in the message."""
    low = msg.lower()
    hits = []
    for r in poker._c().execute("SELECT id, name FROM poker_players WHERE named = 1").fetchall():
        name = (r["name"] or "").strip()
        if len(name) < _MIN_NAME:
            continue
        if re.search(rf"\b{re.escape(name.lower())}\b", low):
            hits.append(r["id"])
    return hits


def _descriptor_spans(msg: str) -> list[str]:
    spans, seen = [], set()
    for pat in _DESC_PATTERNS:
        for m in pat.finditer(msg):
            span = m.group(1).strip(" '’-").lower()
            if span and span not in seen:
                seen.add(span)
                spans.append(span)
    return spans


def _brief(player_id: int) -> str | None:
    """One compact line of episodic recall for a villain, or None if nothing known."""
    rec = poker.villain_recall(player_id)
    if not rec:
        return None
    p = rec["player"]
    who = p["name"] if rec["named"] else f"“{p['name']}”"
    bits = [who]
    tags = [t for t in (p.get("venue"), p.get("category")) if t]
    if tags:
        bits.append("(" + ", ".join(tags) + ")")
    if rec["times_seen"]:
        seen = f"seen {rec['times_seen']}×"
        if rec["last_seen"]:
            seen += f", last {clock.short(rec['last_seen'])}"
        bits.append(seen)
    st = rec.get("stats")
    if st:
        bits.append(f"VPIP {st['vpip_pct']}/PFR {st['pfr_pct']} ({st['hands']}h)")
    line = " ".join(bits)
    if rec["reads"]:
        line += " — reads: " + "; ".join(rec["reads"][:3])
    if rec["notable_hands"]:
        h = rec["notable_hands"][0]
        line += f" · notable hand #{h['hand_id']}" + (f" ({h['cards']})" if h.get("cards") else "")
    return line


def scout(user_msg: str, venue: str | None = None, session_id: int | None = None) -> str | None:
    """Build the SCOUTING DESK note for this message, or None. Never raises for a
    caller that forgets to guard — but callers should guard anyway."""
    try:
        msg = (user_msg or "").strip()
        if len(msg) < 3:
            return None
        if venue is None or session_id is None:
            live = poker.live_session()
            if live:
                venue = venue or live.get("venue")
                session_id = session_id or live.get("id")
        lines: list[str] = []
        seen_ids: set[int] = set()

        for pid in _named_hits(msg):
            if pid in seen_ids:
                continue
            b = _brief(pid)
            if b:
                lines.append(b)
                seen_ids.add(pid)

        for span in _descriptor_spans(msg):
            res = poker.resolve_villain(span, venue=venue, session_id=session_id)
            if res["band"] == "high" and res["match_id"] and res["match_id"] not in seen_ids:
                b = _brief(res["match_id"])
                if b:
                    lines.append(b + "  ← confirm it's the same guy")
                    seen_ids.add(res["match_id"])
            elif res["band"] == "ambiguous" and res["match_id"]:
                # Don't interrupt on a maybe — route it to the async review queue.
                poker.queue_identity_task(
                    "needs_clarification", [res["match_id"]], descriptor=span,
                    context=f'Brian referred to "{span}"', session_id=session_id,
                    confidence=res["confidence"])

        if not lines:
            return None
        logbus.log("info", "scouting desk", hits=len(lines))
        return ("SCOUTING DESK — structured recall for players in his message (cite it, "
                "don't invent; if unsure it's the same person, ask him):\n• "
                + "\n• ".join(lines))
    except Exception as exc:  # desk must never break a turn
        logbus.log("error", "scouting desk failed", error=str(exc)[:160])
        return None