"use strict";

// Layer: simulation/system-maintenance
// Owns periodic compaction, counts refresh, grass limit enforcement,
// out-of-bounds cleanup, and draw-list invalidation.
(function (global) {
  function runMaintenance(worldRef, dt, itemCountBefore) {
    worldRef.compactTimer += dt;
    const compactInterval = 2.5;
    let itemsCompacted = false;
    if (worldRef.compactTimer >= compactInterval) {
      itemsCompacted = worldRef.compactItems();
      worldRef.compactTarinai();
      worldRef.compactAnts?.();
      worldRef.compactTimer = 0;
    }

    worldRef.countsTimer += dt;
    const countsInterval = 2.75;
    const itemCountChanged = worldRef.items.length !== itemCountBefore || worldRef.items.length !== (worldRef._lastMaintenanceItemCount ?? worldRef.items.length);
    const effectCountChanged = worldRef.effects.length !== (worldRef._lastMaintenanceEffectCount ?? worldRef.effects.length);
    const countsDue = worldRef.countsTimer >= countsInterval;
    if (countsDue || itemsCompacted || itemCountChanged || effectCountChanged || worldRef.itemBucketsDirty) {
      if (countsDue || itemsCompacted || itemCountChanged || worldRef.itemBucketsDirty) worldRef.updateItemCounts();
      if (countsDue || itemsCompacted || effectCountChanged) worldRef.updateEffectCounts();
      worldRef._lastMaintenanceItemCount = worldRef.items.length;
      worldRef._lastMaintenanceEffectCount = worldRef.effects.length;
      worldRef.countsTimer = 0;
    }
    if ((worldRef.time || 0) >= (worldRef.nextGrassLimitCheckAt || 0)) {
      worldRef.nextGrassLimitCheckAt = (worldRef.time || 0) + 3.0;
      const removedGrass = worldRef.enforceGrassLimit?.("periodic-grass-limit") || 0;
      if (removedGrass > 0) {
        worldRef.compactItems();
        worldRef.updateItemCounts();
      }
    }

    if ((worldRef.time || 0) >= (worldRef.nextFireCompactAt || 0)) {
      worldRef.nextFireCompactAt = (worldRef.time || 0) + 0.8;
      const compactedFires = global.TarinaiItemDynamicToolSystem?.compactWorldFires?.(worldRef) || 0;
      if (compactedFires > 0) {
        itemsCompacted = true;
        worldRef.updateItemCounts();
      }
    }

    if ((worldRef.time || 0) >= (worldRef.nextGrassBedExpiryCheckAt || 0)) {
      worldRef.nextGrassBedExpiryCheckAt = (worldRef.time || 0) + 5.0;
      const lifespan = Math.max(1, CONFIG.dayLength || 120); // \u30B2\u30FC\u30E0\u518524\u6642\u9593
      let removedBeds = 0;
      const grassBeds = typeof worldRef.itemsOfType === "function" ? worldRef.itemsOfType("grass_bed") : (worldRef.items || []);
      for (const it of grassBeds || []) {
        if (!it || it.dead || it.type !== "grass_bed") continue;
        if (!Number.isFinite(Number(it.createdAt))) it.createdAt = worldRef.time || 0;
        if ((worldRef.time || 0) - Number(it.createdAt || 0) < lifespan) continue;
        const removed = global.TarinaiStructureLifecycle?.deleteItem?.(worldRef, it, {
          reason: "grass-bed-expired",
          userReason: "\u304B\u3093\u305F\u3093\u30D9\u30C3\u30C9\u304C\u53E4\u304F\u306A\u3063\u3066\u6D88\u3048\u305F",
          wake: false,
          panicOwner: false,
        });
        if (removed) removedBeds += 1;
      }
      if (removedBeds > 0) {
        worldRef.compactItems();
        worldRef.updateItemCounts();
        worldRef.markSpatialDirty?.("grass-bed-expired");
        worldRef.markTerrainDirty?.("grass-bed-expired");
      }
    }

    if ((worldRef.outOfBoundsCheckAt || -999) + 5.0 <= worldRef.time) {
      worldRef.outOfBoundsCheckAt = worldRef.time;
      worldRef.sanitizeOutOfBounds();
    }

    // Render builds the visible stack from spatial cells every frame; the old
    // drawListDirty periodic invalidation is no longer a render input.
    worldRef.drawSortTimer = 0;
  }

  global.TarinaiMaintenanceSimulationSystem = Object.freeze({
    phases: Object.freeze({ runMaintenance }),
  });
})(typeof window !== "undefined" ? window : globalThis);