using System;
using System.Collections.Generic;
using System.Text;
using UnityEngine;

namespace NBF
{
    public enum LineType
    {
        Hand,
        HandDouble,
        Spinning,
        SpinningFloat,
    }

    public class FishingLineSolver : FGearBase
    {
        [SerializeField] public LineType LineType;

        

        [Header("References")] [SerializeField]
        private Transform anchorTransform;
        
        [SerializeField] private FishingLineNode[] logicalNodes = Array.Empty<FishingLineNode>();

        public JointPinchController PinchController;

        #region LineNode

        /// <summary>
        /// 当前配置的逻辑节点只读列表。
        /// 外部可读取节点顺序，但不应直接修改数组内容。
        /// </summary>
        public IReadOnlyList<FishingLineNode> LogicalNodes => logicalNodes;


        /// <summary>
        /// 获取指定顺序索引的逻辑节点。
        /// 索引基于 logicalNodes 配置顺序；超出范围或节点为空时返回 null。
        /// </summary>
        public FishingLineNode GetLogicalNode(int logicalIndex)
        {
            if (logicalNodes == null || logicalIndex < 0 || logicalIndex >= logicalNodes.Length)
            {
                return null;
            }

            return logicalNodes[logicalIndex];
        }

        /// <summary>
        /// 获取当前起点逻辑节点。
        /// 会返回配置顺序中第一个非空节点。
        /// </summary>
        public FishingLineNode GetStartNode()
        {
            return FindFirstValidLogicalNode();
        }

        /// <summary>
        /// 获取当前终点逻辑节点。
        /// 会返回配置顺序中最后一个非空节点。
        /// </summary>
        public FishingLineNode GetEndNode()
        {
            return FindLastValidLogicalNode();
        }

        private FishingLineNode FindFirstValidLogicalNode()
        {
            if (logicalNodes == null)
            {
                return null;
            }

            for (var i = 0; i < logicalNodes.Length; i++)
            {
                if (logicalNodes[i] != null)
                {
                    return logicalNodes[i];
                }
            }

            return null;
        }

        private FishingLineNode FindLastValidLogicalNode()
        {
            if (logicalNodes == null)
            {
                return null;
            }

            for (var i = logicalNodes.Length - 1; i >= 0; i--)
            {
                if (logicalNodes[i] != null)
                {
                    return logicalNodes[i];
                }
            }

            return null;
        }

        #endregion

        protected override void OnInit()
        {
            var tipRb = Rod.Asset.LineConnectorRigidbody;
            anchorTransform = tipRb.transform;
        }
    }
}