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


namespace Beyond
{
    //[RequireComponent(typeof(EPOOutline.Outlinable))]
    public class QuestObject : DistanceAlphaFader
    {
        public QuestUITag m_tagObject;
        public EPOOutline.Outlinable m_outlineable;
        public bool m_useFresnel = true;
        //[ColorUsageAttribute(true,true,0f,8f,0.125f,3f)]
        public Color m_fresnelColor = new Color(1f, 1f, .4f);
        public float m_fresnelPower = 2f;
        public float m_fresnelIntensity = 1f;
        private int m_FresnelColorID = Shader.PropertyToID("_FresnelColor");
        private int m_FresnelPowerID = Shader.PropertyToID("FresnelPower");
        private Renderer[] m_renderers;
        private List<Material> m_materials;

        public override void SetAlpha(float a)
        {
            if (m_useFresnel)
            {
                var color = m_fresnelColor * (m_fresnelIntensity * a);
                SetFresnelValues(m_fresnelPower, color);
            }
            else if (m_outlineable)
            {
                var c = m_outlineable.OutlineParameters.Color;
                c.a = a;
                m_outlineable.OutlineParameters.Color = c;
            } 
            
            if (m_tagObject)
                m_tagObject.SetAlpha(a);
        }

        void SetFresnelValues(float fresnelPower, Color fresnelColor)
        {
            foreach (var m in m_materials)
            {
                m.SetColor(m_FresnelColorID, fresnelColor);
                m.SetFloat(m_FresnelPowerID, fresnelPower);
            } 
        }
        protected override void Awake()
        {
            base.Awake();
            if (!m_outlineable)
            {
                m_outlineable = GetComponent<EPOOutline.Outlinable>();
            }

            if (m_useFresnel)
            {
                m_renderers = GetComponentsInChildren<Renderer>();
                m_materials = new List<Material>();
                foreach (var r in m_renderers)
                {
                    for (int i=0; i<r.materials.Length; i++)
                        m_materials.Add(r.materials[i]);
                }
            }
        }

        // Start is called before the first frame update
        protected override void Start()
        {
            base.Start();
            if (m_tagObject)
            {
                m_tagObject.SetMode(QuestUITag.Mode.REMOTELY_CONTROLLED);
                m_tagObject.SetAlpha(0f);
            }          
        }



    }
}