using Godot;
using Godot.NativeInterop;
using System;
using System.Collections.Generic;
using System.Numerics;

public partial class SlotMachine : Sprite2D
{
    [Export] public Wheel[] Wheels;
    int _spins;
    int _points;

    bool _isSpinning = false;

    public int Spins
    {
        get
        {
            return _spins;
        }
        set
        {
            _spins = value;
            GetNode<SpinsUI>("%Spins").Text = _spins + " spins";
        }
    }

    public int Points
    {
        get
        {
            return _points;
        }
        set
        {
            _points = value;
            GetNode<Label>("%Points").Text = _points.ToString();
        }
    }

    public override void _Ready()
	{
        Spins = 9;
        GetOptionPicker().Show(false);
    }

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
        if (_isSpinning)
        {
            bool stillSpinning = false;
            foreach (Wheel wheel in Wheels)
            {
                if (wheel.Spinning)
                    stillSpinning = true;
            }

            if (stillSpinning == false)
            {
                Score();

                _isSpinning = false;
            }
        }
	}

    private void Score()
    {
        List<SlotSymbol> slots = new List<SlotSymbol>();
        int points = 0;

        bool x2 = false;

        foreach (Wheel wheel in Wheels)
        {
            SlotSymbol newSlotSymbol = wheel.GetActiveSlotSymbol();
            int matches = 0;
             
            foreach (SlotSymbol otherSlot in slots)
            {
                if (otherSlot.SlotType == newSlotSymbol.SlotType && newSlotSymbol.SlotType != SlotSymbol.Type.SPIN && newSlotSymbol.SlotType != SlotSymbol.Type.X2)
                {
                    matches++;
                }
            }


            if (newSlotSymbol.SlotType == SlotSymbol.Type.SEVEN)
            {
                points += 7;
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.SPIN)
            {
                Spins++;
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.X2)
            {
                x2 = true;
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.CHERRY)
            {
                if (matches == 2)
                {
                    points += 15;
                }
                else if (matches == 1)
                {
                    points += 3;
                }
                else
                {
                    points += 2;
                }
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.BANANA)
            {
                if (matches == 2)
                {
                    points += 20;
                }
                else if (matches == 1)
                {
                    points += 10;
                }
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.BELL)
            {
                if (matches == 2)
                {
                    points += 75;
                }
                else if (matches == 1)
                {
                    points += 25;
                }
            }
            else if (newSlotSymbol.SlotType == SlotSymbol.Type.BAR)
            {
                if (matches == 2)
                {
                    points += 150;
                }
            }

            slots.Add(newSlotSymbol);


        }

        if (x2)
        {
            points *= 2;
        }

        GetNode<Label>("%Readout").Text = "+" + points.ToString();
        Points += points;
        GetOptionPicker().Reset();
        GetOptionPicker().Show(true);
        HideReadout();
    }

    async void HideReadout()
    {
        await ToSignal(GetTree().CreateTimer(1.5f), SceneTreeTimer.SignalName.Timeout);
        GetNode<Label>("%Readout").Text = "";
    }
    OptionPicker GetOptionPicker()
    {
        return GetNode<OptionPicker>("%OptionPicker");
    }

    public override void _Input(InputEvent @event)
    {
        if (@event is InputEventKey keyEvent && keyEvent.Pressed)
        {
            if (keyEvent.Keycode == Key.Enter || keyEvent.Keycode == Key.KpEnter || keyEvent.Keycode == Key.Space)
            {
                Spin();
            }

            if (_isSpinning == false)
            {
                if (keyEvent.Keycode == Key.Key1)
                {
                    Wheels[0].ReplaceCurrentOption(GetOptionPicker().Select(0));
                }
                if (keyEvent.Keycode == Key.Key2)
                {
                    Wheels[1].ReplaceCurrentOption(GetOptionPicker().Select(1));
                }
                if (keyEvent.Keycode == Key.Key3)
                {
                    Wheels[2].ReplaceCurrentOption(GetOptionPicker().Select(2));
                }
            }

        }
    }

    private void Spin()
    {
        if (Spins <= 0 || _isSpinning)
            return;

        GetOptionPicker().Show(false);
        GetNode<Label>("%Readout").Text = "";
        _isSpinning = true;
        Spins--;
        float extraLength = 0f;

        foreach (Wheel wheel in Wheels)
        {
            wheel.Spin(extraLength);
            extraLength += 1f;
        }
    }
}