"use strict";

(function (global) {
  function markWorldAfterStructureChange(worldRef, reason = "structure-change") {
    if (!worldRef) return;
    worldRef.drawListDirty = true;
    worldRef.markItemBucketsDirty?.(reason);
    worldRef.markSpatialDirty?.(reason);
    worldRef.markTerrainDirty?.(reason);
  }

  function markStructureGone(structure, reason = "structure-removed") {
    if (!structure || structure.dead) return false;
    structure.dead = true;
    structure.hp = 0;
    structure.amount = 0;
    structure.removedReason = String(reason || "structure-removed");
    return true;
  }

  function releaseStructureUsers(worldRef, structure, opts = {}) {
    if (!worldRef || !structure) return 0;
    const reason = opts.reason || "なくなった";
    const wake = opts.wake !== false;
    let released = 0;
    for (const t of worldRef.tarinai || []) {
      if (!t || t.dead) continue;
      const targetMatch = t.target === structure;
      const sleepTargetMatch = t.sleepSession?.targetId && t.sleepSession.targetId === structure.id;
      const nestMatch = structure.type === "nest_box" && t.insideNestBoxId === structure.id;
      if (!targetMatch && !sleepTargetMatch && !nestMatch) continue;

      if (nestMatch) {
        t.insideNestBoxId = null;
        t.nestBoxSleepTimer = 0;
      }
      if (sleepTargetMatch && t.sleepSession) {
        t.sleepSession.targetId = null;
        t.sleepSession.consumesGrassBedOnWake = false;
      }
      if (targetMatch) t.target = null;
      if (t.state === "sleep" || t.sleeping || t.state === "seek_bed" || nestMatch) {
        t.setActionState?.("idle", { clearTarget: true, reason, wake, sleeping: false });
      }
      released += 1;
    }
    return released;
  }

  function deleteStructure(worldRef, structure, opts = {}) {
    if (!structure || structure.dead) return false;
    const reason = opts.reason || "structure-deleted";
    releaseStructureUsers(worldRef, structure, { reason: opts.userReason || "置きものがなくなった", wake: opts.wake !== false });
    const changed = markStructureGone(structure, reason);
    if (!changed) return false;
    markWorldAfterStructureChange(worldRef, reason);
    worldRef?.emit?.("structure:deleted", { structure, type: structure.type, reason });
    return true;
  }

  function consumeGrassBedOnWake(worldRef, bed, user = null, reason = "wake") {
    if (!bed || bed.dead || bed.type !== "grass_bed") return false;
    bed.singleUsePending = false;
    bed.singleUseWakeReason = String(reason || "wake");
    bed.singleUseConsumedById = user?.id || bed.singleUseConsumedById || null;
    if (user?.target === bed) user.target = null;
    const changed = markStructureGone(bed, "grass-bed-wake-used");
    if (!changed) return false;
    markWorldAfterStructureChange(worldRef, "grass-bed-wake-used");
    worldRef?.emit?.("structure:usedUp", { structure: bed, user, reason: "wake" });
    return true;
  }

  function deleteItem(worldRef, item, opts = {}) {
    if (!item || item.dead) return false;
    if (item.isStructure) return deleteStructure(worldRef, item, { reason: opts.reason || "delete-tool", userReason: opts.userReason, wake: opts.wake });
    item.amount = 0;
    if (item.type !== "grass") item.dead = Boolean(opts.killNonStructure);
    markWorldAfterStructureChange(worldRef, opts.reason || "delete-tool");
    return true;
  }

  global.TarinaiStructureLifecycle = Object.freeze({
    markWorldAfterStructureChange,
    releaseStructureUsers,
    deleteStructure,
    consumeGrassBedOnWake,
    deleteItem,
  });
})(window);