using System;
using System.Collections;
using System.Collections.Generic;
using PixelCrushers;
using Sirenix.OdinInspector;
using UnityEngine;

namespace Beyond
{ 
    public class Scannable : Saver, IScannable
    {
        private Renderer[] m_renderers;
        private List<Material> m_materials;
        [ColorUsageAttribute(true,true,0f,8f,0.125f,3f)]
        //[OnValueChanged("SetFresnelColor")]
        public Color m_fresnelColor = new Color(.5f, .5f, 2f);

        public enum CompassSetting
        {
            ADD,
            ADD_AFTER_SCAN,
            DONT_ADD
        }

        public CompassSetting m_addToCompass = CompassSetting.ADD_AFTER_SCAN;
        public float m_removeFromCompassAfter = 15f;
        public float m_minCompassDistance = 0f;

        public float m_fresnelTime = 1f;
        
        public float m_fresnelPower = 2f;
        private int m_FresnelColorID = Shader.PropertyToID("_FresnelColor");
        private int m_FresnelPowerID = Shader.PropertyToID("FresnelPower");
        private CompassMarker m_compassMarker;
        private bool m_compassAdded;
        public void Awake()
        {
            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]);
            }
        }

        public virtual void OnEnable()
        {
            if (m_addToCompass == CompassSetting.ADD)
            {
                AddToCompass();
            }
        }

        public void RemoveFromCompass()
        {
            if (m_compassMarker != null)
            {
                Destroy(m_compassMarker);
                m_compassMarker = null;
            }
            m_compassAdded = false;
        }

        public override string RecordData()
        {
            return SaveSystem.Serialize(m_compassAdded);
        }

        public override void ApplyData(string s)
        {
            m_compassAdded = SaveSystem.Deserialize<bool>(s);
            if (m_compassAdded)
            {
                AddToCompass();
            }
        }

        void SetValues(float fresnelPower, Color fresnelColor)
        {
            foreach (var m in m_materials)
            {
                m.SetColor(m_FresnelColorID, fresnelColor);
                m.SetFloat(m_FresnelPowerID, fresnelPower);
            } 
        }

        void AddToCompass()
        {
            m_compassMarker = GetComponent<CompassMarker>();
            if (m_compassMarker == null)
            {
                m_compassMarker = gameObject.AddComponent<CompassMarker>();
            }

            m_compassMarker.MinDistance = m_minCompassDistance;
            if (m_removeFromCompassAfter > 0f)
            {
                m_compassMarker.RemoveAfterTime(m_removeFromCompassAfter);
            }

            m_compassAdded = true;
        }

        IEnumerator SetFresnel()
        {
            var m = m_materials[0];
            
            Color startColor = m.GetColor(m_FresnelColorID);
            float startPower = m.GetFloat(m_FresnelPowerID);
            float timer = 0f;
            while (timer < m_fresnelTime)
            {
                float a = timer / m_fresnelTime;
                var color = Color.Lerp(startColor, m_fresnelColor,a);
                var power = Mathf.Lerp(startPower, m_fresnelPower, a);
                SetValues(power, color);
                timer += Time.deltaTime;
                yield return null;
            }
            SetValues(m_fresnelPower, m_fresnelColor);
            if (m_addToCompass == CompassSetting.ADD_AFTER_SCAN)
            {
                AddToCompass();
            }
            yield return new WaitForSeconds(3f);
            timer = 0f;
            while (timer < m_fresnelTime)
            {
                float a = 1f - timer / m_fresnelTime;
                var color = Color.Lerp(startColor, m_fresnelColor,a);
                var power = Mathf.Lerp(startPower, m_fresnelPower, a);
                SetValues(power, color);
                timer += Time.deltaTime;
                yield return null;
            }
            yield return null;
        }
        
        public virtual void OnScanned()
        {
            if (m_materials.Count == 0)
                return;
            StartCoroutine(SetFresnel());
        }
    }
}