using System.Collections;
using System.Collections.Generic;
using AibisDream.Framework;
using UnityEngine;

namespace AibisDream
{
    public class BatchSpawner : Spawner
    {
        [SerializeField] private Vector2 batchInterval;
        private bool _isSpawning;
        
        protected override ISelector<MobileObjectData> CreateSelector(IEnumerable<MobileObjectData> datas)
        {
            return new BatchSelector<MobileObjectData>(datas, item => item.weight);
        }

        protected override void OnUpdate()
        {
            if (_isSpawning) return;
            
            curInterval += Time.deltaTime;
            // 按时间间隔生成物体
            if (curInterval >= targetInterval)
            {
                Spawn();
                curInterval = 0;
                targetInterval = Random.Range(intervalRange.x, intervalRange.y);
            }
        }

        protected override void Spawn()
        {
            StartCoroutine(SpawnCoroutine());
        }

        private IEnumerator SpawnCoroutine()
        {
            _isSpawning = true;
            for (var i = 0; i < selector.Count; i++)
            {
                // 生成物体
                var data = selector.Select();
                var mobileObj = factory.CreateMobileObject(data);
                mobileObjects.Add(mobileObj);
                // 销毁时同样记录
                mobileObj.OnDisposed += o => mobileObjects.Remove(o);

                var interval = Random.Range(batchInterval.x, batchInterval.y);
                yield return new WaitForSeconds(interval);
            }

            _isSpawning = false;
        }
    }
}