using System.Collections.Generic;
using Assets.Plugins.SVLTools.Extensions;
using Assets.Plugins.SVLTools.Init;
using Assets.Scripts.CoordinateSystems;
using UnityEngine;

namespace Assets.Scripts.SpaceObjects.Components.Infographic.Trajectory
{
    public class TrajectoryGlLinesRenderer : InitableCacheBehaviour,
        ITrajectoryRenderer
    {
        #region Private

        private readonly List<Vector3> _points = new List<Vector3>();

        private CoordinateSystem _coordinateSystem;

        #endregion

        #region Public

        public Material LinesMaterial;

        #endregion

        #region Interface

        public override void Init()
        {
            base.Init();

            _coordinateSystem = gameObject.GetComponentInParent<CoordinateSystem>();
        }

        public float Width { get; set; }

        public void AddFirst(Vector3d point)
        {
            _points.Add(CoordinateToUnit(point));
        }

        public void RemoveFirst()
        {
            _points.RemoveAt(0);
        }

        public void RemoveLast()
        {
            _points.RemoveAt(_points.Count - 1);
        }

        public void Set(Vector3d point, int index)
        {
            _points[index] = CoordinateToUnit(point);
        }

        public void Clear()
        {
            _points.Clear();
        }

        public void CloseCurve(bool value)
        {
        }

        public void SetTrajectoryVisibleLength(float length)
        {
        }

        public void SetTailOpacity(float tailOpacity)
        {
        }

        #endregion

        #region Logic

        private Vector3 CoordinateToUnit(Vector3d coordinate)
        {
            return (coordinate * _coordinateSystem.BaseCoordinateToUnitK).ToVector3();
        }

        private void OnRenderObject()
        {
            //if (Camera.current.cullingMask != (Camera.current.cullingMask | 1 << gameObject.layer))
            //  return;

            //LinesMaterial.SetPass(0);

            //GL.PushMatrix();

            //GL.MultMatrix(transform.localToWorldMatrix);

            //GL.Begin(GL.LINES);

            //GL.Color(new Color(1, 1, 1, 1F));

            //var last = _points[0];
            //for (int i = 1; i < _points.Count - 1; ++i)
            //{
            //  var first = _points[i];
            //  GL.Vertex3(last.x, last.y, last.z);
            //  GL.Vertex3(first.x, first.y, first.z);
            //  last = first;
            //}

            //GL.End();

            //GL.PopMatrix();
        }

        void OnDrawGizmos()
        {
            for (int i = 0; i < _points.Count - 2; ++i)
                Debug.DrawLine(_points[i], _points[i+1], Color.green);
        }

        #endregion
    }
}