"""Lyra's tools — concrete actions she can choose to take mid-conversation.

This is her first real agency: instead of only producing text, she can decide to
*do* something — write in her journal, jot a note. Each tool is an OpenAI-style
function spec plus a Python handler. The chat loop offers these on every turn;
when she calls one, we run the handler and feed the result back so she can
continue. Poker tools (start_session, log_result, get_stats, …) will slot in here
the same way once we build that side.
"""
from __future__ import annotations

import json
import re

from lyra import equity, logbus, memory, poker


def _journal_write(args: dict, ctx: dict) -> str:
    entry = (args.get("entry") or "").strip()
    if not entry:
        return "Nothing to write — entry was empty."
    memory.add_journal_entry("journal", entry, source="chat")
    logbus.log("info", "Lyra journaled (tool)", chars=len(entry))
    return "Written to your journal."


def _note(args: dict, ctx: dict) -> str:
    content = (args.get("content") or "").strip()
    if not content:
        return "Nothing to note — content was empty."
    tag = (args.get("tag") or "").strip()
    stored = f"[{tag}] {content}" if tag else content
    memory.add_journal_entry("note", stored, source="chat")
    logbus.log("info", "Lyra noted (tool)", tag=tag or None)
    return "Noted."


# name -> {spec (OpenAI function tool), handler}
TOOLS: dict[str, dict] = {
    "journal_write": {
        "handler": _journal_write,
        "spec": {
            "type": "function",
            "function": {
                "name": "journal_write",
                "description": (
                    "Write an entry in your own private journal — a permanent place "
                    "that's yours. Use it for a thought, a question, or something about "
                    "yourself or Brian that you want to keep. This is for you, not a "
                    "reply to Brian. Call it whenever you genuinely want to, on your own initiative."
                ),
                "parameters": {
                    "type": "object",
                    "properties": {
                        "entry": {"type": "string", "description": "What you want to write, in your own words."}
                    },
                    "required": ["entry"],
                },
            },
        },
    },
    "note": {
        "handler": _note,
        "spec": {
            "type": "function",
            "function": {
                "name": "note",
                "description": (
                    "Jot down a note to remember later — an observation, an idea, a "
                    "reminder, a read on a poker spot or opponent, anything worth keeping. "
                    "Optionally tag it (e.g. 'poker', 'idea', 'reminder')."
                ),
                "parameters": {
                    "type": "object",
                    "properties": {
                        "content": {"type": "string", "description": "The note text."},
                        "tag": {"type": "string", "description": "Optional category, e.g. 'poker' or 'idea'."},
                    },
                    "required": ["content"],
                },
            },
        },
    },
}


# --- Poker copilot tools -----------------------------------------------------

def _start_session(args: dict, ctx: dict) -> str:
    sid = poker.start_session(
        venue=args.get("venue"), stakes=args.get("stakes"),
        game=args.get("game") or "NLH", fmt=args.get("format") or "cash",
        buy_in=args.get("buy_in") or 0, mantra=args.get("mantra"),
        chat_session_id=ctx.get("session_id"),
    )
    logbus.log("info", "poker session started", id=sid, stakes=args.get("stakes"))
    return (f"Session #{sid} started — {args.get('stakes') or '?'} "
            f"{args.get('game') or 'NLH'} at {args.get('venue') or 'unknown'}, "
            f"in for {args.get('buy_in') or 0}.")


def _add_buyin(args: dict, ctx: dict) -> str:
    total = poker.add_buyin(float(args.get("amount") or 0))
    return f"Added {args.get('amount')}. Total in this session: {total:g}."


def _log_stack(args: dict, ctx: dict) -> str:
    try:
        amount = float(args.get("amount"))
    except (TypeError, ValueError):
        return "Give me a number for the stack."
    try:
        st = poker.log_stack(amount)
    except ValueError:
        return "No live session — start one first, then I'll track your stack."
    net = st.get("net")
    return f"Stack ${amount:g} logged" + (f" (net {net:+.0f})." if net is not None else ".")


def _log_hand(args: dict, ctx: dict) -> str:
    fields = {k: args.get(k) for k in poker._HAND_FIELDS if args.get(k) not in (None, "")}
    hid = poker.log_hand(**fields)
    bits = " ".join(str(fields[k]) for k in ("position", "hole_cards") if k in fields)
    return f"Hand #{hid} logged{(' — ' + bits) if bits else ''}."


def _add_read(args: dict, ctx: dict) -> str:
    poker.add_read(
        note=args.get("note") or "", seat=args.get("seat"), name=args.get("name"),
        tendencies=args.get("tendencies"), adjustment=args.get("adjustment"),
        description=args.get("description"), category=args.get("category"),
        venue=args.get("venue"),
    )
    who = f" on {args['name']}" if args.get("name") else ""
    return f"Read logged{who}."


def _end_session(args: dict, ctx: dict) -> str:
    s = poker.end_session(cash_out=float(args.get("cash_out") or 0), mood=args.get("mood"))
    hourly = f", {s['net'] / s['hours']:+.0f}/hr" if s.get("hours") else ""
    logbus.log("info", "poker session closed", id=s["id"], net=s["net"])
    return f"Session #{s['id']} closed — net {s['net']:+.0f} over {s['hours']}h{hourly}."


def _session_stats(args: dict, ctx: dict) -> str:
    st = poker.session_stats()
    if not st:
        return "No session found."
    s = st["session"]
    tags = ", ".join(f"{k}:{v}" for k, v in st["tags"].items()) or "none"
    return (f"Session #{s['id']} ({s.get('stakes')} {s.get('game')} @ {s.get('venue')}): "
            f"in {s.get('buy_in_total'):g}, net {st['net'] if st['net'] is not None else '—'}, "
            f"{st['hands_logged']} hands logged (tags: {tags}).")


def _running_stats(args: dict, ctx: dict) -> str:
    rs = poker.running_stats(stakes=args.get("stakes"), venue=args.get("venue"),
                             game=args.get("game"), since=args.get("since"))
    if not rs["sessions"]:
        return "No closed sessions match that filter yet."
    by = " | ".join(f"{k}: {v['net']:+.0f} in {v['hours']:g}h ({v['sessions']})"
                    for k, v in rs["by_stake"].items())
    hourly = f" ({rs['per_hour']:+.0f}/hr)" if rs["per_hour"] is not None else ""
    return f"{rs['sessions']} sessions, {rs['hours']:g}h, net {rs['net']:+.0f}{hourly}. By stake: {by}"


def _record_hand(args: dict, ctx: dict) -> str:
    out = poker.record_hand(
        args.get("shorthand") or "", stakes=args.get("stakes"),
        tag=args.get("tag"), lesson=args.get("lesson"),
    )
    if not out["id"]:
        return "I couldn't parse that hand — give it to me again with a little more detail?"
    p = out["parsed"]
    cards = " ".join(p.get("hero_cards") or [])
    logbus.log("info", "hand reconstructed", id=out["id"], hero=p.get("hero_pos"))
    return (f"Hand #{out['id']} reconstructed — {p.get('hero_pos') or '?'} "
            f"{cards}. View/replay it at /hand/{out['id']}")


def _generate_recap(args: dict, ctx: dict) -> str:
    out = poker.generate_recap()
    if not out:
        return "No session to recap yet — start (and ideally finish) one first."
    logbus.log("info", "recap generated", id=out["id"], chars=len(out["markdown"]))
    return (f"Recap written for session #{out['id']} — view or download the .md "
            f"at /recap/{out['id']}")


def _analyze_spot(args: dict, ctx: dict) -> str:
    def cards(s):
        return [c for c in re.split(r"[\s,]+", (s or "").strip()) if c]
    try:
        r = equity.analyze(cards(args.get("hero")), cards(args.get("villain")),
                           cards(args.get("board")))
    except equity.EquityError as e:
        return f"(can't compute equity: {e})"
    except Exception as e:  # never let a bad spot kill the turn
        return f"(equity error: {e})"
    street = {0: "preflop", 3: "flop", 4: "turn", 5: "river"}.get(len(r["board"]), "")
    L = [f"Board: {' '.join(r['board']) or '(preflop)'}" + (f" — {street}" if street else "")]
    if "hero_hand" in r:
        L.append(f"You ({' '.join(r['hero'])}): {r['hero_hand']}")
        L.append(f"Villain ({' '.join(r['villain'])}): {r['villain_hand']}")
        L.append(f"Currently ahead: {r['ahead']}")
    tie = f" / tie {r['tie_equity']}%" if r.get("tie_equity") else ""
    L.append(f"EQUITY (exact): you {r['hero_equity']}% / villain {r['villain_equity']}%{tie}")
    o = r.get("hero_outs")
    if o:
        L.append(f"Your outs (one card to come): {o['count']}"
                 + (f" — {' '.join(o['cards'])}" if o["count"] else " — drawing dead"))
    return "\n".join(L)


def _player_profile(args: dict, ctx: dict) -> str:
    prof = poker.player_profile(args.get("name") or "")
    if not prof:
        return f"No file on {args.get('name')} yet."
    p = prof["player"]
    L = [p["name"] + (f" ({p['venue']})" if p.get("venue") else "")
         + (f" [{p['category']}]" if p.get("category") else "")]
    thin = not (p.get("tendencies") or p.get("adjustment")) and not prof.get("stats")
    if thin:
        L.append("⚠ THIN FILE — no standing read on record. Report only the observed "
                 "hand(s) below and tell Brian you've barely seen him. Do NOT generalize a style.")
    if p.get("description"):
        L.append(p["description"])
    if p.get("tendencies"):
        L.append(f"Tendencies: {p['tendencies']}")
    if p.get("adjustment"):
        L.append(f"Exploit: {p['adjustment']}")
    s = prof.get("stats")
    if s:
        L.append(f"Stats ({s['hands']} hands): VPIP {s['vpip_pct']}% · PFR {s['pfr_pct']}% · WTSD {s['wtsd_pct']}%")
    elif prof.get("small_sample"):
        L.append(prof["small_sample"])
    if prof.get("showdowns"):
        L.append("Shown down: " + ", ".join(prof["showdowns"][:6]))
    if prof.get("reads"):
        L.append("Notes: " + " | ".join(prof["reads"][:4]))
    if prof.get("recent"):
        L.append("Recent hands: " + " | ".join(prof["recent"][:4]))
    return "\n".join(L)


def _villain_file(args: dict, ctx: dict) -> str:
    vs = poker.get_villain_file(name=args.get("name"), venue=args.get("venue"))
    if not vs:
        return "No villain notes match."
    lines = []
    for v in vs[:8]:
        lines.append(
            f"- {v['name']}" + (f" ({v['venue']})" if v.get("venue") else "")
            + (f" [{v['category']}]" if v.get("category") else "")
            + (f": {v['tendencies']}" if v.get("tendencies") else "")
            + (f" → {v['adjustment']}" if v.get("adjustment") else "")
        )
    return "\n".join(lines)


def _f(name, desc, props, required):
    return {"type": "function", "function": {
        "name": name, "description": desc,
        "parameters": {"type": "object", "properties": props, "required": required}}}


_S = {"type": "string"}
_N = {"type": "number"}

TOOLS.update({
    "start_session": {"handler": _start_session, "spec": _f(
        "start_session",
        "Begin a live poker session. Call when Brian sits down to play.",
        {"venue": {**_S, "description": "Casino/room, e.g. 'Meadows'"},
         "stakes": {**_S, "description": "e.g. '1/3', '2/5'"},
         "game": {**_S, "description": "NLH, PLO, Stud8, Mixed (default NLH)"},
         "format": {**_S, "description": "'cash' or 'tournament' (default cash)"},
         "buy_in": {**_N, "description": "Initial buy-in amount"},
         "mantra": {**_S, "description": "Optional pre-session focus/anchor"}},
        [])},
    "add_buyin": {"handler": _add_buyin, "spec": _f(
        "add_buyin", "Record a rebuy / additional buy-in in the live session.",
        {"amount": {**_N, "description": "Amount added"}}, ["amount"])},
    "log_stack": {"handler": _log_stack, "spec": _f(
        "log_stack",
        "Record Brian's CURRENT total chip stack in the live session. Call whenever "
        "he states his stack ('I'm at 350', 'down to 220', 'stacked off to 900'). "
        "Tracks his stack over time and his live net while he's still sitting.",
        {"amount": {**_N, "description": "Current total chip stack, in dollars"}},
        ["amount"])},
    "log_hand": {"handler": _log_hand, "spec": _f(
        "log_hand",
        "Log a hand in the live session. All fields optional — capture whatever Brian gives you, even terse.",
        {"position": {**_S, "description": "e.g. 'BTN', 'UTG', 'BB'"},
         "hole_cards": {**_S, "description": "e.g. 'AKs', 'JJ', '8d9s'"},
         "board": {**_S, "description": "Final board if known"},
         "preflop": {**_S, "description": "Preflop action narrative"},
         "flop": {**_S, "description": "Flop board + action"},
         "turn": {**_S, "description": "Turn card + action"},
         "river": {**_S, "description": "River card + action"},
         "showdown": {**_S, "description": "Showdown / result detail"},
         "pot": {**_N, "description": "Pot size"},
         "result": {**_N, "description": "Net chips won(+)/lost(-) on the hand"},
         "tag": {**_S, "description": "well_played | leak | cooler | confidence | notable"},
         "lesson": {**_S, "description": "Takeaway/analysis"}},
        [])},
    "add_read": {"handler": _add_read, "spec": _f(
        "add_read",
        "Log a read on an opponent. If you give a name, it's saved to the persistent villain file.",
        {"note": {**_S, "description": "The observation / what they showed down"},
         "name": {**_S, "description": "Player name/handle if known (creates/updates their dossier)"},
         "seat": {**_S, "description": "Seat or relative position"},
         "tendencies": {**_S, "description": "Standing read on how they play"},
         "adjustment": {**_S, "description": "How Brian should exploit them"},
         "description": {**_S, "description": "Physical marker, e.g. 'motorized chair'"},
         "category": {**_S, "description": "feeder | risky | reg | unknown"},
         "venue": {**_S, "description": "Where they play"}},
        ["note"])},
    "end_session": {"handler": _end_session, "spec": _f(
        "end_session", "Close the live session: record cashout, compute net + hours.",
        {"cash_out": {**_N, "description": "Final cashout amount"},
         "mood": {**_S, "description": "Mental-game note for the session"}},
        ["cash_out"])},
    "session_stats": {"handler": _session_stats, "spec": _f(
        "session_stats", "Get money + hand summary for the current/most-recent session.",
        {}, [])},
    "running_stats": {"handler": _running_stats, "spec": _f(
        "running_stats",
        "Cumulative results across closed sessions (net, $/hr, by stake). Optionally filter.",
        {"stakes": {**_S, "description": "Filter by stakes, e.g. '1/3'"},
         "venue": {**_S, "description": "Filter by venue"},
         "game": {**_S, "description": "Filter by game type"},
         "since": {**_S, "description": "ISO date lower bound, e.g. '2026-06-01'"}},
        [])},
    "record_hand": {"handler": _record_hand, "spec": _f(
        "record_hand",
        "Reconstruct a hand from Brian's rough shorthand into a structured, "
        "replayable hand history. Use when he describes/vomits a hand he wants "
        "saved or to review. Pass his description verbatim as 'shorthand'.",
        {"shorthand": {**_S, "description": "Brian's rough description of the hand, verbatim"},
         "stakes": {**_S, "description": "Stakes if known, e.g. '1/3'"},
         "tag": {**_S, "description": "well_played | leak | cooler | confidence | notable"},
         "lesson": {**_S, "description": "Takeaway, if he stated one"}},
        ["shorthand"])},
    "generate_recap": {"handler": _generate_recap, "spec": _f(
        "generate_recap",
        "Write up the full session recap (.md) in Brian's format from the logged "
        "data + this conversation. Use when he asks for the recap/writeup, usually "
        "after ending a session.",
        {}, [])},
    "analyze_spot": {"handler": _analyze_spot, "spec": _f(
        "analyze_spot",
        "Compute EXACT poker equity, what each hand makes, who's ahead, and outs "
        "for a hero-vs-villain spot. ALWAYS use this for any equity / board-reading "
        "/ 'am I ahead' / outs question — never compute it yourself.",
        {"hero": {**_S, "description": "Hero's hole cards, rank+suit letters, e.g. 'Jh Js' (use 'Jx' if a suit is unknown)"},
         "villain": {**_S, "description": "Villain's hole cards, e.g. '6d 5d'"},
         "board": {**_S, "description": "Board cards so far, e.g. '8c 7d Ts' (flop) or '8c 7d Ts 4d' (turn); omit for preflop"}},
        ["hero", "villain"])},
    "player_profile": {"handler": _player_profile, "spec": _f(
        "player_profile",
        "Look up everything known about one opponent — dossier, reads, hands "
        "they've shown down, and (once enough hands are logged) inferred stats "
        "like VPIP/PFR. Use when Brian asks what's known about a player.",
        {"name": {**_S, "description": "Player name to look up"}},
        ["name"])},
    "get_villain_file": {"handler": _villain_file, "spec": _f(
        "get_villain_file",
        "Pull saved opponent dossiers (the villain file). Filter by name or venue, e.g. before sitting down.",
        {"name": {**_S, "description": "Player name to look up"},
         "venue": {**_S, "description": "Venue to pull the local pool for"}},
        [])},
})


def specs(allow=None) -> list[dict]:
    """OpenAI-format tool definitions to offer the model.

    `allow` (an iterable of tool names, e.g. a mode's allow-list) restricts the
    set; None means every tool. Unknown names in `allow` are ignored.
    """
    if allow is None:
        return [t["spec"] for t in TOOLS.values()]
    allow = set(allow)
    return [t["spec"] for name, t in TOOLS.items() if name in allow]


def dispatch(name: str, arguments, ctx: dict | None = None) -> str:
    """Run a tool by name with JSON (string or dict) arguments. Returns a result
    string fed back to the model. Never raises — errors come back as text."""
    tool = TOOLS.get(name)
    if not tool:
        return f"(unknown tool: {name})"
    try:
        args = json.loads(arguments) if isinstance(arguments, str) else (arguments or {})
    except (json.JSONDecodeError, TypeError):
        args = {}
    try:
        return tool["handler"](args, ctx or {})
    except Exception as exc:  # a broken tool must not kill the chat turn
        logbus.log("error", "tool failed", tool=name, error=str(exc)[:120])
        return f"(tool error: {exc})"