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

public class CollectEffect : MonoBehaviour
{
    public static CollectEffect instance;
    public Camera FXCam;
    public Transform solarPanel;
    public Transform goldMine;
    public RectTransform goldStats, metalStats;
    public Animator GoldAnim, MetalAnim;
    public RectTransform GoldEffect, MetalEffect;
    public float EffectScale  =1;

    void Awake(){
        instance=this;
    }

    void Start()
    {
    }

    public void Show(CollectablesData.ResourceType type, int amount){
        if(type == CollectablesData.ResourceType.Gold){
            GoldEffect.GetComponent<ParticleSystem>().maxParticles = (int)Mathf.Clamp(amount * EffectScale, 5, 100);
//             Vector3 ViewportPosition = Camera.main.WorldToViewportPoint(goldMine.position);
//             RectTransform CanvasRect = GoldEffect.root.GetComponent<RectTransform>();
//              Vector2 WorldObject_ScreenPosition=new Vector2(
//  ((ViewportPosition.x*CanvasRect.sizeDelta.x)-(CanvasRect.sizeDelta.x*0.5f)),
//  ((ViewportPosition.y*CanvasRect.sizeDelta.y)-(CanvasRect.sizeDelta.y*0.5f)));
//             Debug.Log(WorldObject_ScreenPosition);
            Vector2 WorldObject_ScreenPosition = Camera.main.WorldToScreenPoint(goldMine.position);
            StartCoroutine(startEffect(GoldEffect, WorldObject_ScreenPosition, goldStats.position));
            // StartCoroutine(PlayAnimation(GoldAnim, GoldEffect));
        }else{
            MetalEffect.GetComponent<ParticleSystem>().maxParticles = (int)Mathf.Clamp(amount * EffectScale, 5, 100);
            StartCoroutine(startEffect(MetalEffect, FXCam.WorldToScreenPoint(solarPanel.position), metalStats.position));

            // StartCoroutine(PlayAnimation(MetalAnim,MetalEffect));
        }
    }

    // IEnumerator PlayAnimation(Animator anim, Transform target){
    //     target.gameObject.SetActive(false);
    //     anim.Play("CollectAnim");
    //     yield return new WaitForSeconds(0.05f);
    //     target.gameObject.SetActive(true);
    //     while(anim.GetCurrentAnimatorStateInfo(0).IsName("CollectAnim")){
    //         target.position = anim.transform.position;
    //         yield return null;
    //     }

    // }

    IEnumerator startEffect(RectTransform item,Vector3 start, Vector3 stop){
        Vector3 diff = stop - start;
        item.gameObject.SetActive(true);
        Debug.Log(start + " : " + stop);
        for(int i =0; i < steps; i++){
            item.position = start + (diff * ((float)i/(float)steps));
            item.localScale = Vector3.one * (5 + (22 * (1-(float)(Mathf.Abs(((float)steps/2f) - i)) / ((float)steps / 2f))));
            
            yield return new WaitForFixedUpdate();
        }

        item.gameObject.SetActive(false);
    }
    [Header("Animation tweaks")]
    public int steps = 500;
    public int offset = 10;
    // IEnumerator startEffect(Vector3 start, Vector3 stop){
    //     Vector3 diff = stop - start;
    //     for(int i=0; i < transform.childCount; i++){
    //         StartCoroutine(travel(transform.GetChild(i), start,stop));
    //         yield return new WaitForSeconds(0.1f);
    //     }
    // }

    // IEnumerator travel(Transform item, Vector3 start, Vector3 stop){
    //     Vector3 diff = stop - start;
    //     item.gameObject.SetActive(true);

    //     for(int i =0; i < steps; i++){
    //         item.position = start + (diff * ((float)i/(float)steps));
    //         item.localScale = Vector3.one * (1-(float)(Mathf.Abs(((float)steps/2f) - i)) / ((float)steps / 2f));
    //         yield return new WaitForFixedUpdate();
    //     }

    //     item.gameObject.SetActive(false);
    // }
}