using System;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.UI;
using WI;

namespace CHN
{

    public class Machine : MonoBehaviour
    {
        public string code; 
        public string[] typeOptions;
        public UI_MachineKPI machineKPI;
        public Sprite previewImage;
        public Vector3 centerPos;

        Renderer[] renderers;
        public List<Material> HoverMaterials = new List<Material>();
        Dictionary<Renderer, Material[]> originMaterials = new();

        public Material translucentMat;
        Material hoverRedMat;

        public override void AfterAwake()
        {
            if (!gameObject.activeSelf)
                return;
            GetComponentInParent<Floor>().machines.Add(this);
            centerPos = transform.GetMeshGroupCenter();
            renderers = GetComponentsInChildren<Renderer>();

            translucentMat = Resources.Load<Material>("MAT_Translucent");
            hoverRedMat = Resources.Load<Material>("Mat_HoverColor");
            CachingOriginMat();
        }

        void CachingOriginMat()
        {
            foreach (Renderer renderer in renderers)
            {
                Material[] originMat = renderer.materials;
                originMaterials.Add(renderer, originMat);
            }
        }

        public void ActivateTranslucent()
        {
            foreach (Renderer renderer in renderers) 
            {
                Material[] newMats = renderer.sharedMaterials;

                for (int i = 0; i < newMats.Length; i++) 
                {
                    newMats[i] = translucentMat;
                }

                renderer.sharedMaterials = newMats;
            }
        }

        public void StartFlash()
        {
            StartCoroutine(Flash());
        }

        public void StopFlash()
        {
            StopAllCoroutines();
            foreach (var m in HoverMaterials)
            {
                m.color = new Color(m.color.r, m.color.g, m.color.b, 0f);
            }
        }

        public void DeactivateTranslucent()
        {
            foreach (Renderer renderer in renderers)
            {
                Material[] originMat = originMaterials[renderer];
                renderer.sharedMaterials = originMat;
            }
            AddHoverMaterials();
        }

        public int GetMachineFloorIndex()
        {
            Transform currentParent = transform.parent;

            while (currentParent != null)
            {
                Floor myFloor = currentParent.GetComponent<Floor>();
                if (myFloor != null)
                {
                    return myFloor.floorIndex;
                }
                currentParent = currentParent.parent;
            }

            return 0;
        }

        void AddHoverMaterials()
        {
            HoverMaterials.Clear();
            foreach (var renderer in renderers)
            {
                var highlightMat = hoverRedMat;
                List<Material> RendererMats = new List<Material>();
                RendererMats.AddRange(renderer.sharedMaterials);
                RendererMats.Add(highlightMat);
                renderer.sharedMaterials = RendererMats.ToArray();
                HoverMaterials.Add(highlightMat);
            }
        }

        IEnumerator Flash()
        {
            float alpha = 0f;
            float coeff = 0.05f;
            while (true)
            {
                yield return new WaitForSeconds(0.05f);
                foreach(var m in HoverMaterials)
                {
                    m.color = new Color(m.color.r,m.color.g,m.color.b,alpha);
                }
                if (alpha > 0.5f)
                {
                    alpha = 0.5f;
                    coeff = -coeff;
                }
                else if (alpha < 0f)
                {
                    alpha = 0f;
                    coeff = -coeff;
                }
                else
                {
                    alpha += coeff;
                }
            }
        }
    }
}