using UnityEngine;
using UnityEngine.Tilemaps;

namespace Platformer.Mechanics
{
    /// <summary>
    /// 게임 시작 시 프레임·렌더·물리 영역 기본 최적화 + One-Way Platform 자동 적용.
    /// PD 지시 2026-05-07 — 스크롤 버벅임 보완 + 점프·이동 시 지형 통과(One-Way Platform).
    /// </summary>
    public static class GameOptimizer
    {
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
        static void Init()
        {
            Application.targetFrameRate = 60;
            QualitySettings.vSyncCount = 0;
            Time.fixedDeltaTime = 1f / 60f;

            // BT5-Dev #22 — Layer 영역 분리: Player(13) ↔ Enemy(14) 충돌 영구 OFF.
            // IgnoreCollision 영역 instance 의존 X = 모든 Player·Enemy 영역 자동 통과 영역.
            Physics2D.IgnoreLayerCollision(13, 14, true);
            Debug.Log($"[BT22-LayerSep] Player(13) ↔ Enemy(14) collision OFF");
        }

        /// <summary>
        /// PD 지시 2026-05-07 — 모든 지형 Collider2D를 One-Way Platform으로 자동 변환.
        /// 위에서만 착지·측면·아래 통과. Player·Enemy·DeathZone·VictoryZone·TokenInstance·Trigger Collider 영역 제외.
        /// </summary>
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
        static void SetupOneWayPlatforms()
        {
            int applied = 0;
            int excludedTrigger = 0, excludedActor = 0;
            var allColliders = Object.FindObjectsByType<Collider2D>(FindObjectsSortMode.None);
            var appliedNames = new System.Collections.Generic.List<string>();
            var excludedNames = new System.Collections.Generic.List<string>();
            foreach (var c in allColliders)
            {
                if (c == null) continue;
                if (c.isTrigger) { excludedTrigger++; continue; }
                if (c.GetComponent<PlayerController>() != null
                    || c.GetComponent<EnemyController>() != null
                    || c.GetComponent<DeathZone>() != null
                    || c.GetComponent<TokenInstance>() != null
                    || c.GetComponent<VictoryZone>() != null
                    || c.GetComponent<AttackHitbox>() != null)
                {
                    excludedActor++;
                    continue;
                }

                c.usedByEffector = true;
                var effector = c.GetComponent<PlatformEffector2D>();
                if (effector == null) effector = c.gameObject.AddComponent<PlatformEffector2D>();
                effector.useOneWay = true;
                effector.surfaceArc = 180f;
                effector.rotationalOffset = 0f;
                effector.useSideFriction = false;
                effector.useSideBounce = false;
                applied++;
                if (appliedNames.Count < 8) appliedNames.Add($"{c.gameObject.name}({c.GetType().Name})");
            }
            Debug.Log($"[BT21-OneWay] applied={applied} trigger={excludedTrigger} actor={excludedActor} total={allColliders.Length}");
            Debug.Log($"[BT21-OneWay] appliedSamples=[{string.Join(", ", appliedNames)}]");
        }
    }
}