"use strict";

const HEALTH = (() => {
  const MAJOR_DAMAGE_WINDOW = 24;
  const WEAKENED_TRACE_WINDOW = 45;
  const WEAKENED_SUFFIX = "\u3067\u8870\u5f31";
  const CAUSES = Object.freeze({
    fight: "\u55a7\u5629",
    hunger: "\u98e2\u9913",
    stress: "\u30b9\u30c8\u30ec\u30b9\u904e\u591a",
    poke: "\u3064\u3064\u304b\u308c\u3059\u304e",
    firecracker: "\u7206\u7af9",
    genkotsu: "\u3052\u3093\u3053\u3064",
    accident: "\u4e8b\u6545",
    collision: "\u885d\u7a81",
    outOfBounds: "\u4ed5\u69d8\u306b\u3088\u308a\u753b\u9762\u5916\u3067\u524a\u9664",
    lifespan: "\u5929\u5bff\u3092\u5168\u3046\u3057\u305f",
    sleepDisease: "\u306d\u3080\u308a\u75c5",
    explosionDisease: "\u7206\u767a\u75c5",
    fightDisease: "\u304d\u305a\u3064\u304d\u75c5",
    zunchiDisease: "\u305a\u3093\u3061\u75c5",
    antEaten: "\u30a2\u30ea\u306b\u98df\u3079\u3089\u308c\u305f",
    giantDrug: "\u5de8\u5927\u85ac",
    dwarfDrug: "\u77ee\u5c0f\u85ac",
  });
  const DISEASE_RE = /([^\u3001\u3002\s]+\u75c5)/;

  function causeLabel(reason = "") {
    const text = String(reason || "");
    if (!text) return "";
    if (text.includes(WEAKENED_SUFFIX)) return text.replace(/\u3067\u8870\u5f31.*$/, "");
    if (/\u55a7\u5629|fight|headbutt/.test(text)) return CAUSES.fight;
    if (/\u3052\u3093\u3053\u3064|genkotsu/.test(text)) return CAUSES.genkotsu;
    if (/\u5de8\u5927\u85ac|giant/.test(text)) return CAUSES.giantDrug;
    if (/\u77ee\u5c0f\u85ac|dwarf/.test(text)) return CAUSES.dwarfDrug;
    if (/\u7206\u7af9|firecracker|explosion/.test(text)) return CAUSES.firecracker;
    if (/\u4ed5\u69d8\u306b\u3088\u308a\u753b\u9762\u5916\u3067\u524a\u9664|\u753b\u9762\u5916\u3067\u524a\u9664|out.*bounds|offscreen/.test(text)) return CAUSES.outOfBounds;
    if (/\u885d\u7a81|collision/.test(text)) return CAUSES.collision;
    if (/\u3064\u3064\u304b\u308c|\u3064\u3064\u304d|poke/.test(text)) return CAUSES.poke;
    if (/\u306d\u3080\u308a\u75c5|sleep.*disease/.test(text)) return CAUSES.sleepDisease;
    if (/\u7206\u767a\u75c5|explosion.*disease/.test(text)) return CAUSES.explosionDisease;
    if (/\u3051\u3093\u304b\u75c5|\u304d\u305a\u3064\u304d\u75c5|fight.*disease/.test(text)) return CAUSES.fightDisease;
    if (/\u305a\u3093\u3061\u75c5|zunchi_sick|zunchi.*\u75c5/.test(text)) return CAUSES.zunchiDisease;
    if (/\u30a2\u30ea\u306b\u98df\u3079\u3089\u308c\u305f|eaten.*ant|ant.*eaten/.test(text)) return CAUSES.antEaten;
    if (/\u75c5/.test(text)) {
      const disease = text.match(DISEASE_RE);
      return disease ? disease[1] : CAUSES.zunchiDisease;
    }
    if (/\u98e2|\u7a7a\u8179|\u98df\u3079\u7269|hunger/.test(text)) return CAUSES.hunger;
    if (/\u30b9\u30c8\u30ec\u30b9|stress/.test(text)) return CAUSES.stress;
    if (/\u30dc\u30fc\u30eb|\u843d\u3061|\u843d\u4e0b|\u77f3|\u9053\u5177|\u4e8b\u6545|\u5f53\u305f|ball|drop|stone|accident/.test(text)) return CAUSES.accident;
    if (/\u5bff\u547d|\u5929\u5bff/.test(text)) return CAUSES.lifespan;
    return "";
  }

  function recentDamageCause(t, maxAge = MAJOR_DAMAGE_WINDOW) {
    const now = t.world?.time || 0;
    if (t.lastDamageCause && now - (t.lastDamageAt || -999) <= maxAge) return t.lastDamageCause;
    return "";
  }

  function rememberDamage(t, amount, reason = "") {
    const cause = causeLabel(reason) || CAUSES.accident;
    const now = t.world?.time || 0;
    t.lastDamageCause = cause;
    t.lastDamageAmount = Math.max(0, amount || 0);
    t.lastDamageAt = now;
    if (t.lastDamageAmount >= 6 || t.lastDamageAmount >= Math.max(4, (t.energy || 0) * 0.22)) {
      t.lastMajorDamageCause = cause;
      t.lastMajorDamageAmount = t.lastDamageAmount;
      t.lastMajorDamageAt = now;
    }
    return cause;
  }

  function weakenedDeathReasonFor(cause = "") {
    const text = String(cause || "").trim();
    if (!text) return "";
    return text.includes(WEAKENED_SUFFIX) ? text : `${text}${WEAKENED_SUFFIX}`;
  }

  function hasRecentMajorDamage(t) {
    const now = t.world?.time || 0;
    return Boolean(t.lastMajorDamageCause && now - (t.lastMajorDamageAt || -999) <= MAJOR_DAMAGE_WINDOW);
  }

  function isFightingContext(t, recent) {
    return Boolean(t.fightTimer > 0.04 || t.defeatedTimer > 0.04 || t.defeatedById || t.fightWinnerId || recent === CAUSES.fight);
  }

  function dominantDeathCause(t, reason = "", opts = {}) {
    const text = String(reason || "").trim();
    const direct = causeLabel(text);
    const recentMajor = hasRecentMajorDamage(t);
    const recent = recentDamageCause(t, 20);
    const fighting = isFightingContext(t, recent);
    if (recentMajor && t.lastMajorDamageCause === CAUSES.collision) return CAUSES.collision;
    if (recentMajor && (!direct || direct === t.lastMajorDamageCause || opts.fromDamage || t.energy <= 18 || t.mood <= 16 || t.stress >= 124 || t.hunger >= 112)) {
      return weakenedDeathReasonFor(t.lastMajorDamageCause);
    }
    const weakenedTrace = recentDamageCause(t, WEAKENED_TRACE_WINDOW);
    const traceCanWeaken = weakenedTrace && weakenedTrace !== CAUSES.stress && weakenedTrace !== CAUSES.hunger && weakenedTrace !== CAUSES.lifespan && weakenedTrace !== CAUSES.outOfBounds;
    if (traceCanWeaken && (!direct || direct === CAUSES.stress || direct === CAUSES.hunger || direct === weakenedTrace || opts.fromDamage) && (t.energy <= 20 || t.mood <= 16 || t.stress >= 124 || t.hunger >= 114)) {
      return weakenedDeathReasonFor(weakenedTrace);
    }
    if (direct && direct !== CAUSES.stress) return direct;
    if (t.zunchiDisease && ((t.zunchiDiseaseSeverity || 0) >= 0.30 || /\u75c5|zunchi/.test(text))) return CAUSES.zunchiDisease;
    if (t.hunger >= 108 || (t.hunger >= 94 && t.energy <= 26) || /\u98e2|\u7a7a\u8179|hunger/.test(text)) return CAUSES.hunger;
    if (fighting && (t.energy <= 44 || t.stress >= 112 || t.mood <= 22 || opts.fromDamage)) return CAUSES.fight;
    if (recent && recent !== CAUSES.stress && (t.energy <= 22 || t.mood <= 14 || t.stress >= 126 || opts.fromDamage)) return weakenedDeathReasonFor(recent);
    if (text.includes(CAUSES.lifespan) || text.includes("\u5bff\u547d")) return CAUSES.lifespan;
    if (direct) return direct;
    if (t.stress >= 118 || /\u30b9\u30c8\u30ec\u30b9|stress|\u6c17\u5206/.test(text)) return CAUSES.stress;
    if (t.energy <= 0.5) return CAUSES.accident;
    return "";
  }

  function normalizeDeathReason(t, reason = "", opts = {}) {
    const text = String(reason || "").trim();
    if (text.includes(WEAKENED_SUFFIX)) return text;
    const cause = dominantDeathCause(t, text, opts) || CAUSES.accident;
    if (cause.includes(WEAKENED_SUFFIX)) return cause;
    const canWeaken = cause && !cause.endsWith("\u75c5") && cause !== CAUSES.hunger && cause !== CAUSES.stress && cause !== CAUSES.lifespan && cause !== CAUSES.outOfBounds && cause !== CAUSES.collision && cause !== CAUSES.genkotsu;
    if (canWeaken && (opts.weakened || (hasRecentMajorDamage(t) && cause === t.lastMajorDamageCause))) return weakenedDeathReasonFor(cause);
    return cause;
  }

  function applyDamage(t, amount, reason = "") {
    const before = t.energy;
    const loss = Math.max(0, amount || 0);
    t.energy = clamp(t.energy - loss, 0, 100);
    const actualLoss = Math.max(0, before - t.energy);
    let cause = "";
    if (actualLoss > 0.01) {
      cause = rememberDamage(t, actualLoss, reason);
      t.world?.emit?.("tarinai:damaged", { tarinai: t, amount: actualLoss, cause, reason });
      if (cause === CAUSES.fight || /\u55a7\u5629|fight/.test(String(reason || ""))) t.recordBleedExposure();
      audio.damage?.(actualLoss);
      if (t.sleepDisease) t.recoverSleepDisease("\u30c0\u30e1\u30fc\u30b8\u3067\u306d\u3080\u308a\u75c5\u304c\u6cbb\u3063\u305f");
      if (t.wakeFromDamage) t.wakeFromDamage(cause || reason);
      if (t.maybeBecomeTimidAfterDamage) t.maybeBecomeTimidAfterDamage(cause || reason);
      t.showHpBar();
    }
    if (t.energy <= 0.5) {
      const majorNow = actualLoss >= Math.max(10, before * 0.42);
      t.die(normalizeDeathReason(t, reason || cause, { fromDamage: true, weakened: majorNow }));
    }
  }

  function briefDeathReason(t, reason = t.deathReason) {
    const text = String(reason || "");
    if (!text) return "";
    const normalized = normalizeDeathReason(t, text);
    return normalized.length > 12 ? `${normalized.slice(0, 12)}\u2026` : normalized;
  }

  return Object.freeze({
    MAJOR_DAMAGE_WINDOW,
    WEAKENED_TRACE_WINDOW,
    CAUSES,
    causeLabel,
    recentDamageCause,
    rememberDamage,
    weakenedDeathReasonFor,
    dominantDeathCause,
    normalizeDeathReason,
    applyDamage,
    briefDeathReason,
  });
})();

window.HEALTH = HEALTH;