using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class Resource : MonoBehaviour, IPunObservable
{
    [SerializeField] protected float currentValue;
    [SerializeField] protected float maxValue;
    [SerializeField] protected float baseMaxValue;
    [SerializeField] protected float flatRegen;
    [SerializeField] protected float percentRegen;
    [SerializeField] protected float timeBetweenRegens;

    protected bool canRegen = true;

    public UnityEvent<float> onResourceChanged = new UnityEvent<float>();

    protected float baseFlatRegen;

    // Start is called before the first frame update
    protected virtual void Start()
    {
        currentValue = maxValue;
        onResourceChanged.Invoke(currentValue);

        StartCoroutine(RegenResource());
    }

    public virtual void ChangeValue(float value)
    {
        currentValue += value;

        currentValue = Mathf.Clamp(currentValue, 0, maxValue);

        onResourceChanged.Invoke(currentValue);
    }

    public float GetCurrentValue()
    {
        return currentValue;
    }
    public virtual float GetMaxValue()
    {
        return maxValue;
    }
    public virtual float GetBaseMaxValue()
    {
        return baseMaxValue;
    }

    public virtual void SetCurrentValue(float value)
    {
        currentValue = value;

        currentValue = Mathf.Clamp(currentValue, 0, maxValue);

        onResourceChanged.Invoke(currentValue);
    }
    public virtual void SetMaxValue(float value)
    {
        maxValue = value;
    }

    protected IEnumerator RegenResource()
    {
        while (canRegen)
        {
            yield return new WaitForSeconds(timeBetweenRegens);

            ChangeValue(flatRegen + (maxValue * percentRegen/100f));
        }

        StartCoroutine(RestartRegen());
    }

    protected IEnumerator RestartRegen()
    {
        while (!canRegen)
        {
            yield return new WaitForSeconds(timeBetweenRegens);
        }
        StartCoroutine(RegenResource());
    }

    public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
    {
        if (stream.IsWriting)
        {
            stream.SendNext(currentValue);
            stream.SendNext(maxValue);
        }
        else if (stream.IsReading)
        {
            SetCurrentValue((float)stream.ReceiveNext());
            SetMaxValue((float)stream.ReceiveNext());
        }
    }
}