"use strict";

// Builds and finalizes Tarinai item-interaction scan context.
// This keeps scan radius, candidate collection, and post-interaction clamping in one place.

(function (global) {
  function create(tarinai, dt = 0) {
    if (!tarinai || !tarinai.world) return null;
      const foodNeed = Number(tarinai.needRaw?.food ?? tarinai.needs?.food ?? 0) || 0;
      const healthNeed = Number(tarinai.needRaw?.health ?? tarinai.needs?.health ?? 0) || 0;
      const currentNeed = getTarinaiBehaviorNeed(tarinai);
      const foodActionActive = currentNeed === "food" || ["seek_food", "eat", "seek_water"].includes(tarinai.state);
      const healthActionActive = currentNeed === "health" || tarinai.state === "seek_food";
      const mealReady = (tarinai.mealCooldownUntil || 0) <= (tarinai.world?.time || 0) || tarinai.hunger > 92 || foodNeed > 84;
      const wantsFood = foodActionActive || foodNeed >= needThreshold("food", "start") || tarinai.hunger > 70;
      const wantsMedicine = healthActionActive || healthNeed >= needThreshold("health", "start");
      const canBite = !tarinai.isZunchiSlave && tarinai.eatCooldown <= 0 && mealReady && wantsFood && tarinai.hunger > 18;
      const canSweetBite = !tarinai.isZunchiSlave && tarinai.eatCooldown <= 0 && mealReady && (wantsFood || wantsMedicine) && tarinai.hunger > 7;
      const canZunchiBite = tarinai.eatCooldown <= 0 && (tarinai.isZunchiSlave ? tarinai.hunger > 16 : (tarinai.hunger >= 102 || foodNeed >= 92)) && (tarinai.isZunchiSlave || !hasBetterFoodThanZunchiNearby(tarinai, tarinai.world, 260));
      const scanLimit = 28;
      const foodScanRadius = tarinai.radius + 92;
      const nearbyFood = tarinai.world.nearbyFood?.(tarinai.x, tarinai.y, foodScanRadius, true) || [];
      const nearbyItems = nearbyFood.length ? nearbyFood : tarinai.world.nearbyItems(tarinai.x, tarinai.y, foodScanRadius);
      const foodCandidates = [];
      if (tarinai.target && !tarinai.target.dead && (tarinai.target.type === "duplicator" || roleMatches(tarinai.target, "food") || roleMatches(tarinai.target, "medicine"))) foodCandidates.push(tarinai.target);
      for (const it of nearbyItems) {
        if (!it || it.dead || foodCandidates.includes(it)) continue;
        if (!(it.type === "duplicator" || roleMatches(it, "food") || roleMatches(it, "medicine") || it.type === "water")) continue;
        foodCandidates.push(it);
        if (foodCandidates.length >= scanLimit) break;
      }
      if (foodCandidates.length > 1 && foodCandidates.length <= scanLimit) {
        foodCandidates.sort((a, b) => foodPriorityScore(tarinai, b, b?.type === "duplicator" ? foodInteractionDistance(tarinai, b) : dist(tarinai, b)) - foodPriorityScore(tarinai, a, a?.type === "duplicator" ? foodInteractionDistance(tarinai, a) : dist(tarinai, a)));
      }
    return {
      dt,
      foodNeed,
      healthNeed,
      currentNeed,
      foodActionActive,
      healthActionActive,
      mealReady,
      wantsFood,
      wantsMedicine,
      canBite,
      canSweetBite,
      canZunchiBite,
      scanLimit,
      foodScanRadius,
      nearbyFood,
      nearbyItems,
      foodCandidates,
    };
  }

  function finalize(tarinai) {
    if (!tarinai) return false;
    tarinai.hunger = clamp(tarinai.hunger, 0, 115);
    tarinai.energy = clamp(tarinai.energy, 0, typeof tarinaiMaxEnergy === "function" ? tarinaiMaxEnergy(tarinai) : (Number(tarinai.maxEnergy) || 100));
    tarinai.stress = applyGroundStressModifier(tarinai, calculateStressFromNeeds(tarinai.needRaw || tarinai.needs || createDefaultNeeds()));
    tarinai.loneliness = clamp(tarinai.loneliness, 0, 110);
    return true;
  }

  function contactForCandidate(tarinai, ctx, item, opts = {}) {
    if (!tarinai || tarinai.dead || !ctx || !item || item.dead) return null;
    const role = opts.role || "food";
    const d = item.type === "duplicator" ? foodInteractionDistance(tarinai, item) : dist(tarinai, item);
    const baseReach = foodInteractionReach(tarinai, item, role);
    const activeBonus = item === tarinai.target && ctx.foodActionActive
      ? Number(opts.activeTargetBonus ?? (item.type === "duplicator" ? 18 : 4))
      : 0;
    const contactReach = baseReach + activeBonus;
    if (d > contactReach) return null;
    return { distance: d, reach: contactReach, baseReach };
  }

  global.TarinaiItemInteractionContext = Object.freeze({
    create,
    finalize,
    contactForCandidate,
  });
})(typeof window !== "undefined" ? window : globalThis);