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

public class PlayerTalkRange : MonoBehaviour
{
    private List<NPC> npcsInRange = new(); //also indicate the npc you're closest to
    [Header("UI")]
    [SerializeField] private Transform talkPopupUI;
    [SerializeField] private Vector3 uiOffset;
    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.TryGetComponent(out NPC isNPC) && !npcsInRange.Contains(isNPC)) //placeholder key lol
        {
            npcsInRange.Add(isNPC);
        }
    }

    private void OnTriggerExit2D(Collider2D other)
    {
        if (other.TryGetComponent(out NPC isNPC) && npcsInRange.Contains(isNPC)) //placeholder key lol
        {
            npcsInRange.Remove(isNPC);
            if (npcsInRange.Count == 0)
            {
                talkPopupUI.gameObject.SetActive(false);
            }
        }
    }

    private void Update()
    {
        if (npcsInRange.Count > 0)
        {
            NPC closestNPC = null;
            foreach (NPC npc in npcsInRange)
            {
                if (!closestNPC || Vector3.Distance(closestNPC.transform.position, transform.position) >
                    Vector3.Distance(npc.transform.position, transform.position))
                {
                    closestNPC = npc;
                }
            }

            if (closestNPC)
            {
                if (!talkPopupUI.gameObject.activeSelf)
                {
                    talkPopupUI.gameObject.SetActive(true);
                }
                talkPopupUI.position = closestNPC.transform.position + uiOffset;
            }

            if (DialogueManager.instance.currentDialogueScript == null && Input.GetKeyDown(KeyCode.E))
            {
                closestNPC.StartDialogue();
            }
        }
    }
}