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


public class BasicLevelProgressionSystem : MonoBehaviour
{
    [SerializeField]
    private ObjectiveText objectiveGui;
    [SerializeField]
    private WaypointMarker marker;
    [SerializeField]
    private PlayerComponent player;
    //[SerializeField]
    //private float minDist = 3;
    
    [SerializeField]
    private List<ProgressionSection> sections;
    public List<ProgressionSection> Sections { get { return sections; } }
    //Fire1 is click or A
    //Place is F or "Y" button
    //Cycle is Tab or RB
    //Siwtch is Shift or "X"
    public enum InputType { FIRE1, PLACE, CYCLE, SWITCH, COLLISION, LOCATION,AIM,EXTERNAL};
    private int progress = 0;
    private bool transitioning = false;
    
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {

        Transform cur = this.getCurrent().getActive();
        if(cur != null)
        {
            if (!this.getCurrent().objectiveOneMet)
            {
                marker.target = cur;
                objectiveGui.visualObjects[0].text.text = this.getCurrent().instruction1;
                objectiveGui.visualObjects[1].text.text = this.getCurrent().istruction2;
            }
            else if(!this.getCurrent().objectiveTwoMet)
            {
                marker.target = cur;
            }
        }

        if(Input.GetButtonDown("Fire1")||Input.GetAxis("Fire1")>0.5f&&!transitioning)
        {
            ProgressCurrentIfInput(InputType.FIRE1);
        }
        if (Input.GetButtonDown("TempPlace"))
        {
            ProgressCurrentIfInput(InputType.PLACE);
        }
        if (Input.GetButtonDown("CycleItems"))
        {   
            ProgressCurrentIfInput(InputType.CYCLE);
        }
        if(Input.GetButtonDown("Fire3"))
        {
            
            ProgressCurrentIfInput(InputType.SWITCH);
        }
        if(Input.GetAxis("Aim")>.5f || Input.GetButtonDown("Aim"))
        {
            if(!transitioning)
            ProgressCurrentIfInput(InputType.AIM);
        }

        if (Vector3.Distance(player.transform.position, this.getCurrent().getActive().position) < 3)
        {
            bool canIterate= this.getCurrent().Iterate();
            if (!canIterate)
            {
                if (!this.getCurrent().objectiveOneMet && this.getCurrent().conditionalOne == InputType.LOCATION)
                {
                    OnePassed();
                }else if (this.getCurrent().objectiveOneMet && this.getCurrent().conditionalTwo == InputType.LOCATION && !this.getCurrent().objectiveTwoMet)
                {
                    TwoPassed();
                }
                
            }
        }

    }
    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.GetComponentInParent<PlayerComponent>() != null)
        {
            ProgressCurrentIfCollide();
        }
    }

    void ProgressCurrentIfCollide()
    {

    }

    private void OnePassed()
    {
        this.getCurrent().objectiveOneMet = true;
        this.getCurrent().Progress();

        this.objectiveGui.visualObjects[0].isComplete = true;
    }
    public void TwoPassed()
    {
        if (transitioning)
        {
            return;
        }
        this.getCurrent().objectiveTwoMet = true;
        this.objectiveGui.visualObjects[1].isComplete = true;
        this.objectiveGui.FadeOut();
        transitioning = true;
        StartCoroutine(waitForFadeIn());
    }
    public void ProgressCurrentIfInput(InputType type)
    {
        
        if (this.getCurrent().AtEnd() && this.getCurrent().conditionalOne == type&&!this.getCurrent().objectiveOneMet)
        {
            OnePassed();
        }else if(this.getCurrent().AtEnd() && this.getCurrent().conditionalTwo == type)
        {
            TwoPassed();
        }
        
    }

    public ProgressionSection getCurrent()
    {
        
        return this.sections[progress];
    }

    private IEnumerator waitForFadeIn()
    {

        yield return new WaitForSeconds(3);
        if (this.sections.Count > this.progress+1)
        {
            this.progress++;
            this.objectiveGui.FadeIn();
            this.objectiveGui.visualObjects[0].isComplete = false;
            this.objectiveGui.visualObjects[1].isComplete = false;
        }
        else
        {

        }
        transitioning = false;
       
    }
}



[System.Serializable]
public class ProgressionSection
{
    [SerializeField]
    public string instruction1;
    [SerializeField]
    public string istruction2;
    [SerializeField]
    public bool objectiveOneMet = false;
    [SerializeField]
    public BasicLevelProgressionSystem.InputType conditionalOne;
    [SerializeField]
    public bool objectiveTwoMet = false;
    [SerializeField]
    public BasicLevelProgressionSystem.InputType conditionalTwo;

    [SerializeField]
    public List<Transform> positionsOne= new List<Transform>();
    [SerializeField]
    public List<Transform> positionsTwo = new List<Transform>();
    [HideInInspector]
    public int activePosition = 0;
    public Transform getActive()
    {
        if (!objectiveOneMet)
        {
            return positionsOne[activePosition];
        }
        else 
        {
            
            return positionsTwo[activePosition];
        }

    }
    public bool Iterate()
    {
        if (!objectiveOneMet && this.activePosition + 1 < positionsOne.Count)
        {
            this.activePosition += 1;
            return true;
        }else if (objectiveOneMet && !objectiveTwoMet && this.activePosition + 1 < positionsTwo.Count)
        {
            this.activePosition += 1;
            return true;
        }
        return false;
        
    }
    public bool AtEnd()
    {
        if (!objectiveOneMet && this.activePosition + 1 < positionsOne.Count)
        {

            return false;
        }
        else if (objectiveOneMet && !objectiveTwoMet && this.activePosition + 1 < positionsTwo.Count)
        {
            
            return false;
        }
        return true;
    }
    public void Progress()
    {
        this.activePosition = 0;
    }
}