"use strict";

// Layer: simulation/colony-situation
// Owns colony mood/situation signal collection and priority arbitration.
(function (global) {
  function avgOf(list, fn) { return list.length ? list.reduce((sum, t) => sum + (Number(fn(t)) || 0), 0) / list.length : 0; }
  function countOf(list, fn) { return list.reduce((sum, t) => sum + (fn(t) ? 1 : 0), 0); }
  function nearestAverage(alive) {
    if (alive.length < 2) return Infinity;
    let total = 0;
    for (const a of alive) {
      let best = Infinity;
      for (const b of alive) {
        if (a === b) continue;
        const dx = (a.x || 0) - (b.x || 0);
        const dy = (a.y || 0) - (b.y || 0);
        const d2 = dx * dx + dy * dy;
        if (d2 < best) best = d2;
      }
      if (Number.isFinite(best)) total += Math.sqrt(best);
    }
    return total / alive.length;
  }
  function collect(worldRef) {
    const now = worldRef?.time || 0;
    const alive = (worldRef?.tarinai || []).filter(t => t && !t.dead);
    const n = alive.length;
    const ratio = value => n ? value / n : 0;
    const panicCount = countOf(alive, t => t.state === "panic" || (t.fearTimer || 0) > 0.2 || (t.panicTargetUntil || 0) > now);
    const safetyHighCount = countOf(alive, t => (t.needs?.safety || 0) >= 52 || (t.fearTimer || 0) > 0.35);
    const weakCount = countOf(alive, t => (t.energy || 0) < 45 || (t.hunger || 0) > 88 || (t.needs?.health || 0) > 58);
    const diseasedCount = countOf(alive, t => t.zunchiDisease || t.sleepDisease || t.explosionDisease || t.fightDisease);
    const breedingCount = countOf(alive, t => (t.loveMochiTimer || 0) > 0.1 || t.state === "birth_ritual" || (t.birthRitualTimer || 0) > 0.1);
    const recentDeaths = (Array.isArray(worldRef?.recentDeathTimes) ? worldRef.recentDeathTimes : []).filter(t => now - (Number(t) || -999) <= 30).length;
    const nearestAvg = nearestAverage(alive);
    const fieldId = String(worldRef?.fieldType || "garden");
    const overcrowdLimit = fieldId === "cage" ? 28 : (fieldId === "park" ? 140 : 75);
    const previousPopulation = Number(worldRef?.lastColonyMoodPopulation);
    const populationIncreasing = Number.isFinite(previousPopulation) && n > previousPopulation;
    return {
      now,
      alive,
      n,
      previousPopulation,
      populationIncreasing,
      avgEnergy: avgOf(alive, t => t.energy || 0),
      avgStress: avgOf(alive, t => t.stress || 0),
      avgHunger: avgOf(alive, t => t.hunger || 0),
      avgSafety: avgOf(alive, t => t.needs?.safety || 0),
      panicCount,
      safetyHighCount,
      weakCount,
      diseasedCount,
      breedingCount,
      recentDeaths,
      nearestAvg,
      recentShock: (now - (worldRef?.lastShootAt || -999) <= 8) || (now - (worldRef?.lastGenkotsuAt || -999) <= 8),
      panicRatio: ratio(panicCount),
      safetyRatio: ratio(safetyHighCount),
      weakRatio: ratio(weakCount),
      diseaseRatio: ratio(diseasedCount),
      breedingRatio: ratio(breedingCount),
      overcrowdLimit,
      denseCrowd: Number.isFinite(nearestAvg) && nearestAvg < 58 && n >= Math.max(12, Math.floor(overcrowdLimit * 0.75)),
    };
  }
  function choose(worldRef, m) {
    const candidates = [];
    const add = (id, priority, ok) => { if (ok) candidates.push({ id, priority }); };
    const devastationSignal = m.recentDeaths >= 3 || (m.n <= 2 && (worldRef?.deadCount || 0) > 0 && (m.recentDeaths > 0 || m.weakRatio >= 0.35 || m.panicRatio >= 0.20));
    const crisisExhaustionSignal = m.avgEnergy < 30 && m.weakRatio >= 0.48;
    add("devastation", 120, m.n <= 10 && devastationSignal);
    add("crisis", 110, m.recentDeaths >= 2 || crisisExhaustionSignal || (m.avgHunger > 92 && m.weakRatio >= 0.48));
    add("confusion", 100, (m.recentShock && (m.panicRatio >= 0.10 || m.safetyRatio >= 0.18)) || m.panicRatio >= 0.25);
    add("fearful", 90, (m.avgSafety >= 50 && m.safetyRatio >= 0.28) || (m.recentShock && m.safetyRatio >= 0.18));
    add("disease_spread", 82, m.diseaseRatio >= 0.25 || (m.diseasedCount >= 3 && m.diseaseRatio >= 0.16));
    add("weakened", 74, !m.populationIncreasing && ((m.avgEnergy < 54 && m.weakRatio >= 0.18) || m.avgHunger > 82 || m.weakRatio >= 0.34));
    add("breeding", 66, m.breedingRatio >= 0.10 || m.breedingCount >= 2 || m.now - (worldRef?.lastBirthAt || -999) <= 45);
    add("happy", 46, m.avgStress < 28 && m.panicRatio < 0.08 && m.diseaseRatio < 0.12 && m.weakRatio < 0.18);
    add("overcrowded", 34, m.n >= m.overcrowdLimit || m.denseCrowd);
    add("isolated", 28, m.n <= 1 || (m.n <= 3 && m.nearestAvg > Math.max(180, Math.min(worldRef?.w || 900, worldRef?.h || 600) * 0.32)));
    if (!candidates.length) return "relaxed";
    candidates.sort((a, b) => b.priority - a.priority);
    return candidates[0].id;
  }
  function evaluate(worldRef, force = false) {
    const now = worldRef?.time || 0;
    if (!worldRef) return { id: "relaxed", label: "\u5B89\u5B9A", effects: { personality: {} } };
    if (!force && worldRef.colonyMood && now < (worldRef.nextColonyMoodEvalAt || 0)) return worldRef.colonyMood;
    const metrics = collect(worldRef);
    const id = choose(worldRef, metrics);
    const next = worldRef.colonyMoodDefinition?.(id) || { id, label: id, effects: { personality: {} } };
    worldRef.colonyMood = next;
    worldRef.lastColonyMoodPopulation = metrics.n;
    const dayLength = Math.max(1, Number(worldRef?.config?.dayLength ?? global.CONFIG?.dayLength ?? 120) || 120);
    worldRef.nextColonyMoodEvalAt = now + dayLength / 12;
    global.TarinaiAchievements?.evaluateWorld?.(worldRef, next);
    return next;
  }
  global.TarinaiColonySituationSystem = Object.freeze({ evaluate });
})(typeof window !== "undefined" ? window : globalThis);