using System;
using System.Threading.Tasks;
using UnityEngine;

public class ShapeDetectionNPC : NPCController
{
    [Header("Shape Detection Minigame Config")]
    public QuestMarker questMarker;
    public RadioTransmitter radio;
    public Transform computerKeyboardKey;
    public ComputerPrinter computerPrinter;
    public Printer3DInputHole printerInsertionHole;
    public Texture2D GeneratedTexture { get; private set; }
    public ShapeScanner shapeScanner;
    public float radioAmount = 1f;
    

    // states:
    // 0 - idle
    // 1 - noticed player
    // 2 - player picked up radio
    // 3 - player spoke into the radio
    // 4 - player pressed enter on keyboard
    // 5 - player inserted picture into printer
    private int state;
    private float lastPlayerApproachTime;

    private void Awake()
    {
        state = 0;
        lastPlayerApproachTime = Time.time;
    }

    private void Start()
    {
        radio.OnPlayerPickUp += OnPlayerPickedUpRadio;
        radio.OnPlayerFinishedSpeaking += OnPlayerSpokeIntoRadio;
        computerPrinter.OnImagePrinted += OnPlayerPrintedImage;
        printerInsertionHole.OnPlayerInsertedPrintable += OnPlayerInitiatedPrinting;
    }

    protected async override void OnPlayerApproach()
    {
        if (Time.time < lastPlayerApproachTime + 0.5f)
        {
            return;
        }
        lastPlayerApproachTime = Time.time;

        if (state == 0)
        {
            state = 1;
            await CallPlayer();
            await Task.Delay(1000);
            questMarker.MoveTo(radio.transform, true);
        }
    }

    protected override void OnPlayerLeave()
    {
        if (Time.time < lastPlayerApproachTime + 0.5f)
        {
            return;
        }

        if (state == 1)
        {
            state = 0;
        }
    }

    private async Task CallPlayer()
    {
        if (state == 1)
        {
            SpeakVoiceLine(0, radio.gameObject, radioAmount);
            await Task.Delay(2000);
            // Has the player maybe picked up the radio during the last 2 seconds?
            if (state == 1)
            {
                SpeakVoiceLine(1, radio.gameObject, radioAmount);
                Invoke(nameof(CallPlayer), 4f);
            }
        }
    }

    private async void OnPlayerPickedUpRadio()
    {
        if (state == 1)
        {
            SpeakVoiceLine(2, radio.gameObject, radioAmount);
            state = 2;
            await Task.Delay(5000);
        }
    }

    private void OnPlayerSpokeIntoRadio()
    {
        if (state == 2)
        {
            SpeakVoiceLine(3, radio.gameObject, radioAmount);
            state = 3;
            questMarker.MoveTo(computerKeyboardKey);
        }
    }

    private void OnPlayerPrintedImage()
    {
        if (state == 3)
        {
            SpeakVoiceLine(4, radio.gameObject, radioAmount);
            state = 4;
            questMarker.MoveTo(printerInsertionHole.transform);
        }
    }

    private void OnPlayerInitiatedPrinting()
    {
        if (state == 4)
        {
            SpeakVoiceLine(5, radio.gameObject, radioAmount);
            state = 5;
            questMarker.MoveTo(shapeScanner.transform, true);
        }
    }
}