"""
Per-game session logging for troubleshooting and prompt refinement.

Writes one JSONL file per game under logs/ plus a human-readable summary .txt.
"""
from __future__ import annotations

import json
import os
import uuid
from datetime import datetime, timezone
from typing import TYPE_CHECKING, Any, Dict, List, Optional

import config
import content

if TYPE_CHECKING:
    from engine import GameState, RoundLog, WordEntry


def _ts() -> str:
    return datetime.now(timezone.utc).isoformat()


def _pool_snapshot(pool: List[WordEntry]) -> List[Dict[str, Any]]:
    return [
        {
            "word": w.word, "category": w.category, "tier": w.tier,
            "used": w.used, "round_used": w.round_used,
        }
        for w in pool
    ]


def _archetype_snapshot(arch: Optional[content.Archetype]) -> Optional[Dict[str, str]]:
    if arch is None:
        return None
    return {"id": arch.id}


def _debater_snapshot(debater: Optional[content.Debater]) -> Optional[Dict[str, str]]:
    if debater is None:
        return None
    return {
        "id": debater.id, "name": debater.name, "emoji": debater.emoji,
        "type": debater.type, "stats": debater.stats,
    }


def _ability_snapshot(card: content.AbilityCard) -> Dict[str, Any]:
    return {
        "id": card.id,
        "name": card.name,
        "emoji": card.emoji,
        "description": card.description,
        "timing": card.timing,
    }


def _judge_snapshot(judge: content.Judge) -> Dict[str, str]:
    return {
        "id": judge.id,
        "name": judge.name,
        "emoji": judge.emoji,
        "bias_blurb": judge.bias_blurb,
    }


def _llm_info() -> Dict[str, str]:
    model = config.ANTHROPIC_MODEL if config.LLM_PROVIDER == "anthropic" else config.HF_MODEL
    return {"provider": config.LLM_PROVIDER, "model": model}


def _sanitize_ability_args(args: Optional[Dict]) -> Optional[Dict]:
    if not args or not args.get("word_flagged"):
        return args
    out = dict(args)
    for key in ("wildcard_word", "plant_word"):
        if key in out:
            out[key] = config.FLAGGED_WORD_REPLACEMENT
    return out


class GameLogger:
    """Append-only JSONL logger for a single game session."""

    def __init__(self, game_id: str, log_dir: Optional[str] = None):
        self.game_id = game_id
        self.log_dir = log_dir or config.LOG_DIR
        os.makedirs(self.log_dir, exist_ok=True)
        stamp = datetime.now().strftime("%Y%m%d_%H%M%S")
        base = f"game_{stamp}_{game_id[:8]}"
        self.jsonl_path = os.path.join(self.log_dir, f"{base}.jsonl")
        self.txt_path = os.path.join(self.log_dir, f"{base}.txt")
        self._events: List[Dict[str, Any]] = []

    def _write(self, event: Dict[str, Any]) -> None:
        event = {"ts": _ts(), "game_id": self.game_id, **event}
        self._events.append(event)
        with open(self.jsonl_path, "a", encoding="utf-8") as f:
            f.write(json.dumps(event, ensure_ascii=False) + "\n")

    def log_game_setup(
        self,
        state: GameState,
        player_flavor: str,
        opponent_flavor: str,
    ) -> None:
        self._write({
            "event": "game_setup",
            "llm": _llm_info(),
            "player_pool": {
                "flavor_seed": player_flavor,
                "words": _pool_snapshot(state.player_pool),
            },
            "opponent_pool": {
                "flavor_seed": opponent_flavor,
                "words": _pool_snapshot(state.opponent_pool),
            },
            "opponent_roster": [_debater_snapshot(d) for d in state.opponent_roster],
            "abilities_hand": [_ability_snapshot(c) for c in state.abilities_hand],
            "abilities_enabled": config.ABILITIES_ENABLED,
        })

    def log_round_setup(
        self,
        state: GameState,
        topic_meta: Dict[str, str],
    ) -> None:
        self._write({
            "event": "round_setup",
            "round": state.round_num,
            "topic": state.current_topic,
            "topic_seed_word": topic_meta.get("seed_word"),
            "topic_frame": topic_meta.get("frame"),
            "judge": _judge_snapshot(state.current_judge),
            "player_side": state.current_player_side,
            "opponent_side": state.current_opponent_side,
            "first_to_argue": state.current_first_to_argue,
        })

    def log_round_result(
        self,
        log: RoundLog,
        opponent_rationale: str = "",
        appeal: bool = False,
    ) -> None:
        self._write({
            "event": "round_appeal" if appeal else "round_result",
            "round": log.round_num,
            "topic": log.topic,
            "judge": _judge_snapshot(log.judge),
            "player_side": log.player_side,
            "opponent_side": log.opponent_side,
            "first_to_argue": log.first_to_argue,
            "player_debater": _debater_snapshot(getattr(log, "player_debater", None)),
            "opponent_debater": _debater_snapshot(getattr(log, "opponent_debater", None)),
            "player_words": log.player_words,
            "opponent_words": log.opponent_words,
            "opponent_selection_rationale": opponent_rationale,
            "player_argument": log.player_argument,
            "opponent_argument": log.opponent_argument,
            "ability_played": log.ability_played,
            "ability_args": _sanitize_ability_args(log.ability_args),
            "content_flag_active": log.content_flag_active,
            "content_flag_ability": log.content_flag_ability,
            "judge_result": log.judge_result,
            "scores": {
                "player": log.judge_result.get("player_score"),
                "opponent": log.judge_result.get("opponent_score"),
            },
        })

    def log_game_end(self, state: GameState) -> None:
        total_p = sum(p for p, o in state.scores)
        total_o = sum(o for p, o in state.scores)
        rounds_won = sum(1 for p, o in state.scores if p > o)
        rounds_lost = sum(1 for p, o in state.scores if o > p)
        self._write({
            "event": "game_end",
            "winner": state.winner,
            "rounds_won": rounds_won,
            "rounds_lost": rounds_lost,
            "total_points": {"player": total_p, "opponent": total_o},
            "per_round_scores": state.scores,
        })
        self._write_summary_txt(state)

    def _write_summary_txt(self, state: GameState) -> None:
        lines = [
            f"THE PODIUM — Game Log",
            f"Game ID: {self.game_id}",
            f"Log file: {self.jsonl_path}",
            f"LLM: {_llm_info()['provider']} / {_llm_info()['model']}",
            "",
            "=" * 60,
            "SETUP",
            "=" * 60,
        ]
        for ev in self._events:
            if ev["event"] == "game_setup":
                lines.append(f"Player flavor seed: {ev['player_pool']['flavor_seed']}")
                lines.append(f"Player words: {', '.join(w['word'] for w in ev['player_pool']['words'])}")
                lines.append(f"Opponent flavor seed: {ev['opponent_pool']['flavor_seed']}")
                lines.append(f"Opponent words: {', '.join(w['word'] for w in ev['opponent_pool']['words'])}")
                opp_roster = ev.get("opponent_roster", [])
                lines.append("Opponent roster: " + ", ".join(
                    f"{d['emoji']} {d['name']}" for d in opp_roster
                ))
                if ev["abilities_hand"]:
                    lines.append("Ability hand: " + ", ".join(
                        f"{c['emoji']} {c['name']}" for c in ev["abilities_hand"]
                    ))
                break

        for ev in self._events:
            if ev["event"] not in ("round_result", "round_appeal"):
                continue
            lines += [
                "",
                "=" * 60,
                f"ROUND {ev['round']}" + (" (APPEAL RE-SCORE)" if ev["event"] == "round_appeal" else ""),
                "=" * 60,
                f"Topic: {ev['topic']}",
                f"Judge: {ev['judge']['emoji']} {ev['judge']['name']}",
                f"Sides: player={ev['player_side']}, opponent={ev['opponent_side']}",
                f"First to argue: {ev['first_to_argue']}",
                f"Player words: {', '.join(ev['player_words'])}",
                f"Opponent words: {', '.join(ev['opponent_words'])}",
            ]
            if ev.get("ability_played"):
                lines.append(f"Ability played: {ev['ability_played']} {ev.get('ability_args') or ''}")
            lines += [
                "",
                "--- Player argument ---",
                ev["player_argument"],
                "",
                "--- Opponent argument ---",
                ev["opponent_argument"],
                "",
                f"Scores: player={ev['scores']['player']} opponent={ev['scores']['opponent']}",
                f"Verdict: {ev['judge_result'].get('verdict', '')}",
            ]
            breakdown = ev["judge_result"].get("breakdown", {})
            if breakdown:
                lines.append(f"Breakdown: {json.dumps(breakdown)}")

        for ev in self._events:
            if ev["event"] == "game_end":
                lines += [
                    "",
                    "=" * 60,
                    "FINAL",
                    "=" * 60,
                    f"Winner: {ev['winner']}",
                    f"Rounds: {ev['rounds_won']} - {ev['rounds_lost']}",
                    f"Total points: player={ev['total_points']['player']} opponent={ev['total_points']['opponent']}",
                ]

        with open(self.txt_path, "w", encoding="utf-8") as f:
            f.write("\n".join(lines) + "\n")


# ---------------------------------------------------------------------------
# Module-level helpers used by engine.py
# ---------------------------------------------------------------------------

_loggers: Dict[str, GameLogger] = {}


def new_game_logger() -> GameLogger:
    game_id = uuid.uuid4().hex
    logger = GameLogger(game_id)
    _loggers[game_id] = logger
    return logger


def get_logger(game_id: Optional[str]) -> Optional[GameLogger]:
    if not game_id or not config.GAME_LOGGING_ENABLED:
        return None
    return _loggers.get(game_id)


def log_if_enabled(state: GameState, fn_name: str, *args, **kwargs) -> None:
    """Call a GameLogger method if logging is enabled for this state."""
    logger = get_logger(getattr(state, "log_id", None))
    if logger is None:
        return
    getattr(logger, fn_name)(*args, **kwargs)