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

public class TrafficLightHandler : MonoBehaviour
{
    public Intersection intersection;
    public int lightPhase;
    public GameObject RedLight;
    public GameObject YellowLight;
    public GameObject GreenLight;
    public Color RedColor;
    public Color YellowColor;
    public Color GreenColor;
    public Color BlackColor;
    private int currentLight;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        ManageLightChanges();
    }

    private void ManageLightChanges()
    {
        if(intersection.currentRedLightsGroup == lightPhase)
        {
            ChangeLight(3);
            currentLight = 3;   
        }else{
            ChangeLight(1);
            currentLight = 1;
        }
    }
    private void ChangeLight(int lightToSet)
    {
        //turn off all lights
        RedLight.GetComponent<Renderer>().material.color =  BlackColor;
        YellowLight.GetComponent<Renderer>().material.color =  BlackColor;
        GreenLight.GetComponent<Renderer>().material.color =  BlackColor;
        switch (lightToSet)
        {
            case (1): //green
                GreenLight.GetComponent<Renderer>().material.color =  GreenColor;
                break;
            case (2): //yellow
                YellowLight.GetComponent<Renderer>().material.color = YellowColor;
                break;
            case (3): //red
                RedLight.GetComponent<Renderer>().material.color =  RedColor;
                break;
        }
    }
}