using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
using ArduinoBluetoothAPI;
using System;
using UnityEngine.Events;
using System.Text;
using TMPro;


//public enum Tier {1,2,3 }

[Serializable]
public class HeartRateEvent : UnityEvent<string>
{

}
public class HeartData : MonoBehaviour
{

    BluetoothHelper bluetoothHelper;

    public float baseLine, currentTier;
    private float tier0, tier1, tier2, tier3,baseTier, adjustingTier, difference, increment, median, joystickX,counter;
    public Vector2 joystickPos;
    private List<float> MedianHeartRateCol = new List<float>();
    private List<float> previousTiers = new List<float>();
    bool pressed, running;
    public AudioSource src;

    public GameObject btn1,btn2;

    //only for testing
    // public GameObject elevator;

    [HideInInspector]
    public HeartRateEvent getHeartData;

    public BaseLineCalculator bls;

    public TMP_Text avgHR;

    private void Start()
    {
        bls = new BaseLineCalculator();
        joystickX = 0f;
        //baseline represents an initial Beats pr. 300 iteration
        baseTier = 0.5f;
        tier0 = 0;
        tier1 = 3f;
        tier2 = 2;
        tier3 = 1;
        //tier2 = 0.5f;
        //tier3 = 0.25f;


        // currentTier = baseTier;
        currentTier = tier0;


        if(getHeartData == null)
        {
            getHeartData = new HeartRateEvent();
        }
        getHeartData.AddListener(ReceiveData);
        counter = 0;
    }

    private void FixedUpdate()
    {
        //testing purposes
    //    elevator.transform.Translate((Vector3.up * currentTier) * 0.5f);
    }

    void EvaluateTier(float heartMedian)
    {
        float previousTier = currentTier;

        switch (heartMedian)
        {
            case float i when i > baseLine * 1.3f:
                //intermediateRate = tier3;
                SetTier(tier3);
                print("tier3");

                break;
            case float i when i > baseLine * 1.2f:
                //intermediateRate = tier2;
                SetTier(tier2);
                print("tier2");

                break;
            case float i when i > baseLine * 1.1f:
                //intermediateRate = tier1;
                SetTier(tier1);
                print("tier1");

                break;
            default:
                //intermediateRate = tier0;
                SetTier(baseTier);
                print("basetier");

                break;
        }


        //if the current tier is an increase by 2, set the tier to 0 -- moved to elevator ride
        // if(currentTier >= previousTier + 2f)
        // {
        //     currentTier = tier0;
        // }

        print(currentTier + " current tier");
    }

    //evaluates if the current tier is equal or larger than the 2nd to last of the list - if true evaluate tier should set current tier to stopTier
    // because this should prove that the users heartrate has jumped a tier within the last 10 seconds - having a bad time!
    // bool evaluatePreviousTier(float currentTier)
    // {
    //     //do nothing if there is only the one entry or none
    //     if (previousTiers.Count <= 1)
    //     {
    //         return false;

    //     }
    //     else
    //         //return if the current tier estimation is greater than the 2nd to last entry,
    //         return currentTier >= previousTiers[previousTiers.Count - 2];
    // }

    public void SetTier(float tier)
    {
        currentTier = tier;
    }

    public float GetCurrentTier()
    {
        return currentTier;
    }

   public void ReceiveData(string androidMessage)
   {
       counter++;
        float heartRateString = float.Parse(androidMessage);

        if(counter > 10)
        {
            EvaluateTier(heartRateString);

            if(!running)
            {
                running = true;
                baseLine = bls.returnAverageBpm();

                //show start button
                btn1.SetActive(true);
                btn2.SetActive(true);


            }

        } else
        {
             bls.addValueToBaseLine(heartRateString);
        }

   }
}