"""
ui.state — ViewModel: pega game.Session con las pantallas.

Es lo que vive en el gr.State. Tiene estado SOLO de UI (pantalla activa, crónica)
y la PRESENTACIÓN (emojis de casilla, arte del rival). El flujo de pantallas
(qué pantalla toca tras una ronda) se decide aquí a partir del estado del juego;
las reglas viven en game.Session.
"""

from __future__ import annotations

import copy

from game import Session, RED, BLUE, DISPUTED, SPLIT
from ui.assets import ART, COIN_PLAYER

# Colores de ficha consistentes con el juego: jugador = azul, rival según quién sea
# (Lesky = amarillo, monstruo = verde). El emoji se usa en la crónica/chat.
PLAYER_EMOJI = "🔵"
OPP_EMOJI = {"lesky": "🟡", "monstruo": "🟢"}


def bump(vm: "ViewModel") -> "ViewModel":
    """Devuelve una copia superficial (id nuevo). Necesario porque @gr.render solo
    re-renderiza si el valor del gr.State cambia de identidad; mutar y devolver el
    mismo objeto NO dispara el re-render. Comparte session/log (mutaciones visibles).

    Incrementa vm.nav (contador de renders COMPARTIDO entre copias: es una lista, que
    el copy.copy comparte por referencia). Un handler que sintetiza voz tarda segundos;
    antes de su re-render TARDÍO mira este contador: si avanzó (otro handler navegó/
    pintó mientras tanto), NO re-pinta -> no te devuelve a la pantalla vieja."""
    vm.nav[0] += 1
    return copy.copy(vm)


class ViewModel:
    def __init__(self):
        self.session = Session()
        self.screen = "title"
        self.player_name = "Player"
        self.log: list[str] = []
        self.chat_messages: list[tuple[str, str]] = []  # [(speaker, text), ...]
        self.round_taunt = ""
        self.accuse_result = ""    # shown on round_over after an accusation
        self.accuse_caught = False # True when last accusation was correct
        self.reveal_step = 0   # paso de la secuencia de revelación de gnomos
        self.voice_url = ""    # voz del enemigo a reproducir (url servible) — ui.tts
        self.voice_seq = 0     # +1 por frase -> el navegador la reproduce una sola vez
        self.pending_speech = ""  # texto a sintetizar TRAS pintar la pantalla (no bloquea)
        self.nav = [0]            # contador de renders COMPARTIDO (lista) — ver bump()
        self.voice_loading = False # True mientras se sintetiza voz -> bloquea botones de avanzar

    # ----- arte del rival actual -----
    @property
    def art(self) -> dict:
        return ART[self.session.opponent.key]

    # ----- color/ficha del jugador y del rival -----
    @property
    def player_emoji(self) -> str:
        return PLAYER_EMOJI

    @property
    def opp_emoji(self) -> str:
        return OPP_EMOJI.get(self.session.opponent.key, "🟡")

    @property
    def player_coin(self) -> str:
        return COIN_PLAYER

    @property
    def opp_coin(self) -> str:
        return self.art["coin"]

    # ----- crónica -----
    def say(self, msg: str):
        self.log.append(msg)

    def chronicle(self, n: int = 6) -> str:
        return "<br>".join(self.log[-n:])

    # ----- presentación de casilla (dato del juego -> texto/ficha) -----
    def cell_label(self, r: int, c: int) -> str:
        """Texto del botón. Para casillas con dueño la FICHA (png) la pinta el CSS
        como fondo (ver cell_coin_class); aquí solo el valor numérico encima."""
        s = self.session
        owner = s.cell_owner(r, c)
        val = f"{s.cell_value(r, c):g}"
        if owner in (RED, BLUE): return val      # la moneda va de fondo
        if owner == DISPUTED:    return f"⚔️ {val}"
        if owner == SPLIT:       return f"➗ {val}"
        shown = val if s.cell_revealed(r, c) else "?"
        if s.cell_locked(r, c):
            return f"🚫 {shown}"
        return shown

    def cell_coin_class(self, r: int, c: int) -> str:
        """Clase CSS que pone la moneda de fondo: jugador (azul) o rival (su color)."""
        owner = self.session.cell_owner(r, c)
        if owner == RED:  return "coin-player"
        if owner == BLUE: return "coin-opp"
        return ""

    def cell_clickable(self, r: int, c: int) -> bool:
        s = self.session
        return (self.screen == "board"
                and not s.round_over
                and s.chip_index < s.chips_per_round
                and s.cell_owner(r, c) is None
                and not s.cell_locked(r, c))

    # ----- flujo de pantallas -----
    def start(self, name: str):
        """'Listo': guarda el nombre y va a la tienda del duende (no al tablero)."""
        self.player_name = (name or "").strip() or "Player"
        self.session.set_player_name(self.player_name)
        self.screen = "shop"
        self.say(f"🌲 Welcome, {self.player_name}!")
        self.pending_speech = self.briefing_speech()   # Lesky lee el briefing
        self.voice_loading = True                      # bloquea avanzar hasta tener la voz

    def to_board(self):
        self.screen = "board"

    async def on_cell_chips(self, r: int, c: int):
        if self.screen != "board" or self.session.round_over:
            return
        ev = await self.session.place_async(r, c)
        if not ev.get("ok"):
            return
        if ev["clash"]:
            self.say(f"⚡ Both at row {r+1} col {c+1}")
        elif ev["blue"] is None:
            self.say(f"{self.player_emoji} {self.player_name}: r{r+1}c{c+1} · "
                     f"{self.opp_emoji} {self.session.opponent.name} skips (no legal cell)")
        else:
            b = ev["blue"]
            self.say(f"{self.player_emoji} {self.player_name}: r{r+1}c{c+1} · "
                     f"{self.opp_emoji} {self.session.opponent.name}: r{b[0]+1}c{b[1]+1}")

    async def on_cell_finalize(self):
        import asyncio
        s = self.session
        sc = s.last_round_scores   # committeados
        self.say(f"— Round {s.round_num} end: {self.player_emoji} {sc[RED]:g} · "
                 f"{self.opp_emoji} {sc[BLUE]:g}")

        # Ejecutamos las llamadas al LLM (pulla + legislación) en paralelo
        tasks = []
        
        async def fetch_taunt():
            self.round_taunt = await s.round_over_taunt_async()
        tasks.append(fetch_taunt())
        
        if not s.match_over and s.winner == BLUE:
            tasks.append(s.goblin_legislate_async())
            
        await asyncio.gather(*tasks)

        announcement = ""
        if s.gs.scroll.laws:
            last_law = s.gs.scroll.laws[-1]
            if last_law.author == BLUE:
                announcement = last_law.announcement
                self.say(f"{self.opp_emoji} {s.opponent.name}: «{announcement}»")

        # Voz del enemigo: pulla + (si legisló) el anuncio de su ley, en una sola pista.
        # NO se sintetiza aquí (bloquearía el cambio de pantalla): se deja pendiente y
        # el handler la lanza tras pintar la pantalla. Ver board._cell.
        self.pending_speech = " ... ".join(
            p for p in (self.round_taunt, announcement) if p).strip()
        self.voice_loading = bool(self.pending_speech)  # bloquea avanzar hasta tener la voz

        # Misión secreta completada (objetivo cumplido esta ronda)
        history = s.gs.round_history
        if history:
            last_round = history[-1]
            obj_data = last_round.get("obj", {})
            if RED in obj_data and obj_data[RED][0] > 0:
                self.say(f"🎉 Secret Mission Completed! Gained +{obj_data[RED][0]} Cleverness!")
                if s.secret_mission:
                    self.say(f"🎯 New Secret Mission: {s.secret_mission}")

        if s.match_over:
            self.screen = "enemy_clear" if s.player_won_match() else "gameover"
        else:
            self.screen = "round_over"

    def legislate(self, choice_index: int, repeal_index: int | None = None):
        self.session.legislate(choice_index, repeal_index)
        self.next_round()

    async def legislate_free(self, phrase: str, repeal_index: int | None = None) -> bool:
        ok, error, narration = await self.session.legislate_free_async(phrase, repeal_index)
        if not ok:
            self.say(f"❌ {error}")
            return False
        self.say(f"📜 Law enacted: «{narration}»")
        self.next_round()
        return True

    def accuse(self, law_index: int):
        caught, msg = self.session.accuse(law_index)
        self.accuse_result = msg
        self.accuse_caught = caught
        self.say(f"⚖️ {msg}")

    def next_round(self):
        self.accuse_result = ""
        self.accuse_caught = False
        self.session.next_round()
        self.screen = "board"
        self.say(f"— Round {self.session.round_num}/{self.session.max_rounds} · "
                 f"{self.session.board_name}")

    def buy_scout(self) -> bool:
        opp_name = self.session.opponent.name
        if self.session.buy_scout():
            self.say(f"🦊 Scouted {opp_name}'s secret mission!")
            return True
        self.say(f"❌ Failed to scout: not enough cleverness.")
        return False

    def buy_reveal_center(self) -> bool:
        if self.session.buy_reveal_center():
            self.say(f"🦊 Revealed center value: {self.session.cell_value(1, 1)}")
            return True
        self.say(f"❌ Failed to reveal: not enough cleverness or center already revealed.")
        return False

    def buy_repeal_law(self, choice_text: str) -> bool:
        if not choice_text:
            return False
        try:
            parts = choice_text.split(".")
            idx = int(parts[0].strip()) - 1
            if self.session.buy_repeal_law(idx):
                self.say(f"🦊 Repealed Law {idx + 1} from Scroll!")
                return True
        except Exception:
            pass
        self.say(f"❌ Failed to repeal: not enough cleverness or invalid law selection.")
        return False

    async def send_chat(self, message: str):
        message = message.strip()
        if not message:
            return
        self.chat_messages.append(("You", message))
        reply = await self.session.chat_async(message)
        self.chat_messages.append((self.session.opponent.name, reply))
        await self.speak(reply)   # el enemigo responde con voz

    def chat_html(self, n: int = 8) -> str:
        recent = self.chat_messages[-n:]
        parts = []
        for speaker, text in recent:
            cls = "chat-player" if speaker == "You" else "chat-lesky"
            parts.append(f"<div class='chat-msg {cls}'><b>{speaker}:</b> {text}</div>")
        return "".join(parts) or "<div class='chat-msg chat-empty'>Say something…</div>"

    def claim_treasure(self):
        # Hay otro rival -> presentación del jefe (boss_intro) antes de su tablero.
        # Si no, acabaste con el gigante: revélalo (4 gnomos) antes de la final.
        if self.session.next_opponent():
            self.screen = "boss_intro"
            self.pending_speech = self.briefing_speech()  # el jefe lee su briefing
            self.voice_loading = True
        else:
            self.reveal_step = 0           # arranca la secuencia de revelación
            self.screen = "monster_reveal"
            self.voice_loading = True      # 1ª línea de gnomos

    def advance_reveal(self):
        self.reveal_step += 1

    # ----- voz de los personajes (Chatterbox/Modal) -----
    @staticmethod
    def _clean_speech(text: str) -> str:
        """Limpia para el TTS: quita HTML y normaliza espacios. NO recorta -> se lee
        TODO el texto entero (el estándar aguanta frases largas sin gibberish)."""
        import re
        t = re.sub(r"<[^>]+>", " ", text or "")
        return re.sub(r"\s+", " ", t).strip()

    async def speak(self, text: str, voice: str | None = None):
        """Sintetiza una voz y la marca para que el navegador la reproduzca (bajando
        la música). `voice` = clave de voz (lesky/monstruo/gnomos); por defecto el
        rival actual. Si el TTS falla, no pasa nada: sin voz, el juego sigue."""
        from ui.tts import synthesize_async
        text = self._clean_speech(text)
        if not text:
            return
        url = await synthesize_async(text, voice or self.session.opponent.key)
        if url:
            self.voice_url = url
            self.voice_seq += 1

    async def speak_guarded(self, text: str, voice: str | None = None) -> bool:
        """Como speak(), pero dice si el re-render POSTERIOR es seguro: True solo si
        nadie ha renderizado/navegado durante la síntesis (mismo contador nav). Evita
        que un re-pintado tardío te devuelva a una pantalla que ya dejaste atrás.
        Al terminar baja voice_loading -> re-habilita los botones de avanzar."""
        token = self.nav[0]
        await self.speak(text, voice)
        self.voice_loading = False
        return self.nav[0] == token

    async def speak_pending(self) -> bool:
        """Sintetiza la frase pendiente (puesta al cambiar de pantalla) TRAS pintar.
        Devuelve True solo si el re-render es seguro (nadie navegó mientras tanto)."""
        if not self.pending_speech:
            self.voice_loading = False
            return False
        text, self.pending_speech = self.pending_speech, ""
        return await self.speak_guarded(text)

    def shop_briefing_html(self) -> str:
        """HTML del briefing del shop = resumen DETALLADO del juego + leyes + misión.
        FUENTE ÚNICA: shop.py lo pinta y briefing_speech() lo lee (sin HTML), así el
        pergamino y la voz dicen LO MISMO."""
        s = self.session
        n, chips = s.grid_size, s.chips_per_round
        parts = [
            f"Welcome to my shop, <b>{self.player_name}</b>! Hehe. Let me explain, then we duel.",
            (f"<b>🎲 The board</b><br>A <b>{n}×{n}</b> grid. Every cell has a value — the "
             f"center is worth more, the edges less — and it <b>reshuffles each round</b>."),
            (f"<b>🪙 Each round</b><br>We each place <b>{chips} chips</b>, one per turn, at the "
             f"<b>same time</b> (you don't see my pick). Higher value <b>owns</b> the cell; most "
             f"points wins the round. Same cell = a <b>clash</b> ⚔️ — nobody scores."),
            ("<b>📜 Make a law</b><br>Win a round and you <b>write a law in plain words</b> "
             "(corners are worth double). It bends the board for <b>both</b> of us. "
             "The Scroll holds up to <b>3</b> laws — a 4th means repealing one."),
            ("<b>🤥 I cheat</b><br>When I win I legislate too… and I may <b>lie</b>: announce one "
             "law, enact another. <b>Accuse</b> me after any round — each lie you expose makes "
             "whatever awaits you beyond this glade <b>7% less precise</b>. Wrong guess costs you "
             "Cleverness 🦊 though."),
            ("<b>🦊 Cleverness</b><br>Earned from secret missions. Spend it in the shop between "
             "matches for perks (scouting objectives, revealing cell values, or repealing scroll "
             "laws), or save it — each point earned adds <b>+3 bonus points</b> to your final score!"),
        ]
        laws = s.starting_laws()
        if laws:
            items = "".join(f"<li>{law}</li>" for law in laws)
            parts.append(f"<b>📜 Active Forest Laws</b><ul>{items}</ul>")
        if s.secret_mission:
            parts.append(f"<b>🎯 Your Secret Mission</b><br>{s.secret_mission}")
        return "<br><br>".join(parts)

    def briefing_speech(self) -> str:
        """Texto HABLADO del briefing. shop = exactamente lo del pergamino (limpiado de
        HTML/emojis para que el TTS lo lea bien). boss_intro = el diálogo del jefe."""
        import re
        s = self.session
        if self.screen == "boss_intro":
            parts = [f"So, you slipped past Lesky. Impressive, for a morsel. "
                     f"I am {s.opponent.name}, and this is my turf. The board is bigger "
                     f"here, {s.grid_size} by {s.grid_size}. Win rounds, rewrite the law, "
                     f"if you dare. Hehehe."]
            laws = s.starting_laws()
            if laws:
                parts.append("The forest laws in play. " + ". ".join(laws) + ".")
            if s.secret_mission:
                parts.append("Your secret mission: " + s.secret_mission)
            html = " ".join(parts)
        else:
            html = self.shop_briefing_html()   # mismo contenido que el pergamino
        # Limpia para el TTS: tags -> espacio, × -> "by", quita emojis/símbolos raros.
        text = re.sub(r"<[^>]+>", " ", html)
        text = text.replace("×", " by ").replace("“", "").replace("”", "").replace("’", "'")
        text = re.sub(r"[\U0001F000-\U0001FAFF☀-➿️]", " ", text)  # emojis
        return re.sub(r"\s+", " ", text).strip()