using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using TMPro;
 using UnityEngine.EventSystems;
 public class TechNodeUI : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
 {
    [SerializeField]
    private Image techImage;
    [SerializeField] Image techStatusImage;
    [SerializeField] Sprite techStatusLocked;
    [SerializeField] Sprite techStatusUnlocked;
    [SerializeField] Sprite techStatusResearching;
    [SerializeField] Sprite techStatusCompleted;
    [SerializeField]
    private TextMeshProUGUI techTitleText;
    [HideInInspector]
    public Technology technology;
    [SerializeField]
    private Image nodeImage;
    [SerializeField]
    private TechNodeConnector connector;
    [SerializeField]
    private Outline outline;
    public void Initialize(Technology tech)
    {
        technology = tech;
        techTitleText.text = tech.techName;
        techImage.sprite = tech.techImage;
        outline.effectColor = tech.techUIColor;
        if (tech.availabilityState == Technology.AvailabilityState.Locked)
        {
            nodeImage.color = Color.gray;
            techStatusImage.sprite = techStatusLocked;
            techStatusImage.color = Color.black;
            TechEvents.OnTechUnlocked += UnlockedTechnology;
        }
        GetComponent<Button>().onClick.AddListener(StartResearching);
    }
    public void StartResearching()
    {
        if (technology.availabilityState == Technology.AvailabilityState.Unlocked && technology.StartResearching())
        {
            nodeImage.color = Color.blue;
            techStatusImage.color = Color.black;
            techStatusImage.sprite = techStatusResearching;
            TechEvents.OnTechResearchCompleted += CompletedResearch;
        }
    }
    public void Connect(List<TechNodeUI> nodes, Transform parent)
    {
        foreach (RequiredTech tech in technology.techRequirements)
        {
            TechNodeUI connectedNode = nodes.Find(t=>t.technology.techName == tech.techName);
            TechNodeConnector nodeConnector = Instantiate(connector, parent);
            nodeConnector.MakeConnections(transform.position, connectedNode.transform.position, connectedNode.technology.techUIColor);
        }
    }
    public void CompletedResearch(Technology tech)
    {
        nodeImage.color = Color.green;
        techStatusImage.sprite = techStatusCompleted;
        techStatusImage.color = Color.black;
        TechEvents.OnTechResearchCompleted -= CompletedResearch;
    }
    public void UnlockedTechnology(Technology tech)
    {
        if (tech == technology)
        {
            nodeImage.color = Color.yellow;
            techStatusImage.sprite = techStatusUnlocked;
            techStatusImage.color = Color.black;
            TechEvents.OnTechUnlocked -= UnlockedTechnology;
        }
    }
     public void OnPointerEnter(PointerEventData eventData)
    {
        TechTooltip.Instance.Show(this.technology);
    }
    public void OnPointerExit(PointerEventData eventData)
    {
        TechTooltip.Instance.Hide();
    }
 }