"use client";

import { type CSSProperties, useEffect, useRef } from "react";
import { problemaPorId } from "@/lib/jogo/problemas";
import { ARMAS, HORDAS, JOGADOR } from "@/lib/jogo/valores";
import type { Retrato } from "./contrato";
import { TOQUE_TOPO } from "./medidas";

const AREA_TOPO = "env(safe-area-inset-top)";
const AREA_ESQUERDA = "env(safe-area-inset-left)";
const AREA_DIREITA = "env(safe-area-inset-right)";
/** Centro do aviso: 22% da altura, no terço de cima, longe da mira. */
const AVISO_CENTRO = "22%";
/** Barra do topo (botão de 44 px entre duas folgas) onde o feed começa. */
const BARRA_TOPO = `calc(max(var(--sp-2), ${AREA_TOPO}) + 44px + var(--sp-2))`;
/** No toque o feed termina acima do botão mais alto, com uma folga. */
const FEED_ALTURA_MAXIMA = `calc(100dvh - ${BARRA_TOPO} - ${TOQUE_TOPO} - var(--sp-2))`;

type Props = {
  retrato: Retrato;
  mudo: boolean;
  aoAlternarMudo(): void;
  aoContinuar(): void;
  aoSair(): void;
};

const fundo =
  "bg-[rgba(10,10,10,.72)] font-[family-name:var(--font-mono)] tracking-[0.02em] text-[#f4f2ed]";
const painel = `${fundo} text-[13px]`;
const botao =
  "pointer-events-auto inline-flex min-h-11 items-center justify-center border border-white/40 bg-[var(--ink)] px-sp-4 font-display text-[15px] font-medium text-[#f4f2ed] hover:bg-white/15";

function Alto({ retrato }: { retrato: Retrato }) {
  const problema = problemaPorId(retrato.problemaAtual)?.nome ?? "";
  if (retrato.fase === "chefao") return <>Chefão · {problema}</>;
  return (
    <>
      Horda {retrato.horda + 1} de {HORDAS.tamanhos.length} · {problema} ·
      faltam {retrato.restantes}
    </>
  );
}

function IconeSom({ mudo }: { mudo: boolean }) {
  return (
    <svg
      aria-hidden="true"
      width="22"
      height="22"
      viewBox="0 0 24 24"
      fill="none"
      stroke="currentColor"
      strokeWidth="2"
      strokeLinecap="round"
      strokeLinejoin="round"
    >
      <path d="M4 9v6h4l5 4V5L8 9H4z" />
      {mudo ? (
        <path d="M17 9l5 6M22 9l-5 6" />
      ) : (
        <path d="M17 8.5a5 5 0 0 1 0 7M19.5 6a8.5 8.5 0 0 1 0 12" />
      )}
    </svg>
  );
}

export default function Hud({
  retrato,
  mudo,
  aoAlternarMudo,
  aoContinuar,
  aoSair,
}: Props) {
  const continuar = useRef<HTMLButtonElement>(null);
  useEffect(() => {
    if (retrato.pausado) continuar.current?.focus();
  }, [retrato.pausado]);

  const arma = ARMAS[retrato.arma];
  const municao =
    retrato.arma === 0 ? "∞" : arma.gasta ? String(retrato.municao) : null;
  const resolvido =
    retrato.fase === "pausa" ? problemaPorId(retrato.problemaAtual) : undefined;
  const emJogo = retrato.fase === "horda" || retrato.fase === "chefao";
  const vida = Math.max(0, Math.min(JOGADOR.vida, Math.round(retrato.vida)));

  return (
    <div className="pointer-events-none absolute inset-0 overflow-hidden font-display">
      <div
        aria-hidden="true"
        className="absolute left-1/2 top-1/2 h-2 w-2 -translate-x-1/2 -translate-y-1/2 rounded-full bg-[var(--slash)] ring-1 ring-black/70"
      />

      <div
        className="absolute flex items-start justify-between gap-sp-2"
        style={{
          top: `max(var(--sp-2), ${AREA_TOPO})`,
          left: `max(var(--sp-2), ${AREA_ESQUERDA})`,
          right: `max(var(--sp-2), ${AREA_DIREITA})`,
        }}
      >
        <p className={`${painel} px-sp-3 py-sp-2 leading-[1.4]`}>
          {emJogo ? <Alto retrato={retrato} /> : "Expediente dos Mortos"}
        </p>
        <div className="flex min-w-0 shrink-0 flex-col items-end gap-sp-2">
          <div className="flex items-start gap-sp-2">
            <p className={`${painel} px-sp-3 py-sp-2 leading-[1.4]`}>
              Você {retrato.placar.jogador} · Drones {retrato.placar.drones}
            </p>
            <button
              type="button"
              onClick={aoAlternarMudo}
              aria-label={mudo ? "Ligar o som" : "Desligar o som"}
              className={`${botao} w-11 px-0`}
            >
              <IconeSom mudo={mudo} />
            </button>
          </div>
          <ul
            aria-live="polite"
            aria-label="Últimas eliminações"
            style={{ "--feed-max": FEED_ALTURA_MAXIMA } as CSSProperties}
            className={`${resolvido ? "opacity-0" : ""} ${fundo} grid w-max max-w-[40vw] gap-sp-1 overflow-hidden px-sp-3 py-sp-2 text-[12px] leading-4 empty:p-0 [&>li]:truncate [&>li:nth-last-child(n+6)]:hidden [@media(max-height:499px)]:[&>li:nth-last-child(n+4)]:hidden [@media(pointer:coarse)]:max-h-[var(--feed-max)]`}
          >
            {retrato.feed.map((linha) => (
              <li key={`${linha.passo}-${linha.texto}`}>{linha.texto}</li>
            ))}
          </ul>
        </div>
      </div>

      {retrato.drones.length > 0 ? (
        <ul
          aria-label="Drones aliados"
          className="absolute left-sp-2 top-20 grid w-36 gap-sp-1"
        >
          {retrato.drones.map((drone, i) => {
            const solucao = problemaPorId(drone.problemaId)?.solucao ?? "";
            return (
              <li
                key={`${drone.problemaId}-${i}`}
                className={`${painel} px-sp-2 py-sp-1 text-[12px] leading-[1.3]`}
              >
                <span className="block">{solucao}</span>
                <span className="block">
                  {drone.eliminacoes}{" "}
                  {drone.eliminacoes === 1 ? "eliminação" : "eliminações"}
                </span>
              </li>
            );
          })}
        </ul>
      ) : null}

      <div
        className={`${painel} absolute bottom-sp-2 left-sp-2 grid w-48 gap-sp-1 px-sp-3 py-sp-2`}
      >
        <div className="flex items-center gap-sp-2">
          <span>Vida</span>
          <div
            role="progressbar"
            aria-label="Vida"
            aria-valuemin={0}
            aria-valuemax={JOGADOR.vida}
            aria-valuenow={vida}
            className="h-2 flex-1 bg-white/25"
          >
            <div
              className="h-full bg-[var(--slash)]"
              style={{ width: `${(vida / JOGADOR.vida) * 100}%` }}
            />
          </div>
          <span>{vida}</span>
        </div>
        <p>
          {arma.nome}
          {municao !== null ? ` · ${municao}` : ""}
        </p>
      </div>

      {resolvido ? (
        <div
          className="absolute inset-x-0 flex -translate-y-1/2 justify-center"
          style={{ top: AVISO_CENTRO }}
        >
          <div className="w-80 max-w-[calc(100%-2rem)] bg-[var(--ink)] p-sp-4 text-[#f4f2ed] ring-1 ring-[var(--slash)] [@media(max-height:499px)]:w-56 [@media(max-height:499px)]:p-sp-3">
            <p className="text-[20px] font-semibold leading-[1.15] tracking-[-0.02em] [@media(max-height:499px)]:text-[16px]">
              Resolvido: {resolvido.nome}
            </p>
            <p className="mt-sp-2 text-[15px] leading-[1.4] text-[rgba(244,242,237,.8)] [@media(max-height:499px)]:text-[13px]">
              {resolvido.solucao} entrou para o seu time
            </p>
          </div>
        </div>
      ) : null}

      {retrato.pausado ? (
        <div
          role="dialog"
          aria-modal="true"
          aria-labelledby="hud-pausa"
          className="pointer-events-auto absolute inset-0 flex items-center justify-center bg-black/70 p-sp-4"
        >
          <div className="w-full max-w-md bg-[var(--ink)] p-sp-6 text-[#f4f2ed] ring-1 ring-white/25">
            <h2
              id="hud-pausa"
              className="text-[28px] font-semibold leading-none tracking-[-0.02em]"
            >
              Pausado
            </h2>
            <div className="mt-sp-4 flex flex-wrap gap-sp-2">
              <button
                ref={continuar}
                type="button"
                onClick={aoContinuar}
                className={`${botao} bg-[var(--slash)] text-[var(--ink)] hover:bg-[var(--paper)]`}
              >
                Continuar
              </button>
              <button
                type="button"
                onClick={aoAlternarMudo}
                aria-pressed={!mudo}
                className={botao}
              >
                {mudo ? "Som desligado" : "Som ligado"}
              </button>
              <button type="button" onClick={aoSair} className={botao}>
                Sair
              </button>
            </div>
          </div>
        </div>
      ) : null}
    </div>
  );
}