using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.UIElements;

public class LockOnManager : MonoBehaviour{
    [ShowInInspector]
    public UIDocument lockOnDocument;
    public GameObject lockOnTarget;

    private Label elementLabelName;
    private VisualElement elementRoot; 
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        if (lockOnTarget.GetComponent<ILockOnTarget>() == null) {
            Debug.LogError($"Game Object {lockOnTarget.name} does not implement the ILockOnTarget interface. Not processing lock-on actions!");
        }
        
        elementRoot = lockOnDocument.rootVisualElement.Query<VisualElement>("LockOnGroup");
        elementLabelName = lockOnDocument.rootVisualElement.Query<Label>("LockOnName").First();
    }

    // Update is called once per frame
    void LateUpdate(){
        if (lockOnTarget.GetComponent<ILockOnTarget>() != null) {
            // This is just test logic to get an image above a lock on.
            // TODO: Replace with something less silly
            Vector2 screenPos = RuntimePanelUtils.CameraTransformWorldToPanel(
                lockOnDocument.rootVisualElement.panel, 
                lockOnTarget.GetComponent<ILockOnTarget>().GetReticlePosition(),
                Camera.main.GetComponent<Camera>()
            );
            
            // Set name
            elementLabelName.name = lockOnTarget.name;
            
            // Set position (add the width/height of the element)
            elementRoot.style.top = new StyleLength(screenPos.y - elementRoot.resolvedStyle.height * .7f );
            elementRoot.style.left = new StyleLength(screenPos.x - elementRoot.resolvedStyle.width / 2f);
            
            // Set enabled
            elementRoot.SetEnabled(true);
        } else {
            elementRoot.SetEnabled(false);
        }
        
    }
}