using System.Collections;
using Sirenix.OdinInspector;
using UnityEngine;
using Random = UnityEngine.Random;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class Boids : MonoBehaviour
    {
        [Title("군집(떼) 설정")]
        [Tooltip("Boid 프리팹")]
        [SerializeField] private Boid boidPrefab;
        
        [Range(1, 1000)]
        [Tooltip("생성할 개체 수")]
        [SerializeField] private int boidCount = 5;
        
        [Range(5, 100)]
        [Tooltip("개체 생성 범위")]
        [SerializeField] private float spawnRange = 10;

        [field: Tooltip("개체의 랜덤 속도 값\nx == Min\ny == Max")]
        [field: SerializeField] public Vector2 RandomSpeedRange { get; private set; } = new(5, 10);

        [field: Range(0, 10)]
        [field: Tooltip("응집력(뭉치기) 가중치")]
        [field: SerializeField] public float CohesionWeight { get; private set; } = 1;
        
        [field: Range(0, 10)]
        [field: Tooltip("정렬(같은 방향) 가중치")]
        [field: SerializeField] public float AlignmentWeight { get; private set; } = 1;
        
        [field: Range(0, 10)]
        [field: Tooltip("분리(서로 회피) 가중치")]
        [field: SerializeField] public float SeparationWeight { get; private set; } = 1;

        [field: Range(0, 100)]
        [field: Tooltip("경계 범위 내 행동 가중치")]
        [field: SerializeField] public float BoundsWeight { get; private set; } = 1;
        
        [field: Range(0, 100)]
        [field: Tooltip("장애물 회피 가중치")]
        [field: SerializeField] public float ObstacleWeight { get; private set; } = 10;
        
        [field: Range(0, 10)]
        [field: Tooltip("자아(독립행동) 가중치")]
        [field: SerializeField] public float EgoWeight { get; private set; } = 1;

        [Title("옵션")]
        [Tooltip("경계 범위 On/Off")]
        [SerializeField] private bool showBounds;
        
        public MeshRenderer BoundMeshRenderer { get; private set; }

        private void OnValidate()
        {
            if (BoundMeshRenderer)
            {
                BoundMeshRenderer.enabled = showBounds;
            }
        }

        private void Start()
        {
            CreateBoids();
        }

        private void CreateBoids()
        {
            BoundMeshRenderer = GetComponentInChildren<MeshRenderer>();
            BoundMeshRenderer.enabled = showBounds;
            var myTransform = transform;
            for (var i = 0; i < boidCount; i++)
            {
                var randomPos = Random.insideUnitSphere * spawnRange;
                var randomRotation = Quaternion.Euler(0, Random.Range(0, 360f), 0);
                var boid = Instantiate(boidPrefab, myTransform.position + randomPos, randomRotation, myTransform);
                boid.Init(this, Random.Range(RandomSpeedRange.x, RandomSpeedRange.y));
            }
        }

        public void SetBoundPos(Vector3 value) => BoundMeshRenderer.transform.position = value;
        public void SetBoundPosLerp(Vector3 value, float time) => StartCoroutine(BoundPosLerpCoroutine(value, 1/time));

        private IEnumerator BoundPosLerpCoroutine(Vector3 value, float time)
        {
            while (Vector3.Distance(transform.position, value) > 0.1f)
            {
                transform.position = Vector3.Lerp(transform.position, value, time * Time.deltaTime);
                yield return null;
            }
            
            transform.position = value;
        }
    }
}