using Godot;
using System;

public partial class player : Camera3D
{
    private const string _path = "/root/player/";

    [Export]
    private Label _con;
    [Export]
    private Label _mousePosLabel;
    [Export]
    private Label _cursorPosLabel;
    [Export]
    private RayCast3D _cursor;
    [Export]
    private Node3D _cursorPoint;
    private bool _mUp, _mDown, _mLeft, _mRight, _wIn, _wOut;


    private enum buildingType
    {
        kash,
        pr,
        nuke
    }

    [Export]
    private PackedScene _kash_building;
    [Export]
    private PackedScene _pr_building;
    [Export]
    private PackedScene _nuke_building;

    [Export]
    private TextureProgressBar _nuke, _pr, _kash;

    [Export]
    private Label _chatter, _timer, _pr_count, _nuke_count, _kash_count;

    [Export]
    private AudioStreamPlayer _sndChtr, _sndBtn;

    [Export]
    private Timer _tmrChtr, _tmrCashGen;

    [Export]
    private Button _btnEnd, _btnNukes, _btnPR, _btnKashCow;

    private float Nukes { get => (float)_nuke.Value; set => _nuke.Value = value; }
    private float PR { get => (float)_pr.Value; set => _pr.Value = value; }
    private float Kash { get => (float)_kash.Value; set => _kash.Value = value; }
    private int KashFlow { get; set; } = 1;
    private int GameTime { get; set; } = 60;

    private string Chatter
    {
        get => _chatter.Get("text").ToString(); set
        {
            if (value != "")
                _sndChtr.Play();
            _chatter.Set("text", value);
            _tmrChtr.Start();
        }
    }


    public base_building CurrentBuilding { get; set; }

    public override void _Ready()
    {
        _tmrChtr.Start();
        _tmrChtr.Timeout += () => Chatter = "";
        _tmrCashGen.Timeout += MakeMoney;
        _btnEnd.Pressed += () => _sndBtn.Play();
        _btnNukes.Pressed += () => HandleBtnNuke();
        _btnPR.Pressed += () => HandleBtnPR();
        _btnKashCow.Pressed += () => HandleBtnKash();
        Chatter = "The enemy is stockpiling weapons of mass destruction.";

        SetBarLabels();
    }

    private void UnHandBuilding()
    {
        if (CurrentBuilding != null)
        {
            GetParent().RemoveChild(CurrentBuilding);
            CurrentBuilding.QueueFree();
            CurrentBuilding = null;
            game_manager.CurrentState = game_manager.State.Play;
        }
    }

    private void InstantiateBuilding(buildingType type)
    {
        PackedScene toInstantiate = null;
        UnHandBuilding();
        switch (type)
        {
            case buildingType.kash:
                toInstantiate = _kash_building;
                break;
            case buildingType.pr:
                toInstantiate = _pr_building;
                break;
            case buildingType.nuke:
                toInstantiate = _nuke_building;
                break;
            default:
                toInstantiate = _kash_building;
                break;
        }

        CurrentBuilding = toInstantiate.Instantiate<base_building>();
        this.GetParent().CallDeferred("add_child", CurrentBuilding);
        game_manager.CurrentState = game_manager.State.Building;
    }

    private void HandleBtnNuke()
    {
        _sndBtn.Play();
        InstantiateBuilding(buildingType.nuke);
    }
    private void HandleBtnPR()
    {
        _sndBtn.Play();
        InstantiateBuilding(buildingType.pr);
    }
    private void HandleBtnKash()
    {
        _sndBtn.Play();
        InstantiateBuilding(buildingType.kash);
    }

    public override void _Process(double delta)
    {
        Vector3 rot = this.Rotation;
        bool zin = true, zout = true;

        if (Input.IsActionPressed("CamNorth"))
            _mUp = true;
        if (Input.IsActionPressed("CamSouth"))
            _mDown = true;
        if (Input.IsActionPressed("CamEast"))
            _mRight = true;
        if (Input.IsActionPressed("CamWest"))
            _mLeft = true;

        this.Rotation -= rot;
        if (this.Position.Y < 5)
            zin = false;
        else if (this.Position.Y > 45)
            zout = false;
        if (_mLeft && this.Position.X > -30)
            this.Translate(new Vector3((float)-delta * 10, 0, 0));
        if (_mRight && this.Position.X < 30)
            this.Translate(new Vector3((float)delta * 10, 0, 0));
        if (_mUp && this.Position.Z > -25)
            this.Translate(new Vector3(0, 0, (float)-delta * 10));
        if (_mDown && this.Position.Z < 25)
            this.Translate(new Vector3(0, 0, (float)delta * 10));
        this.Rotation += rot;

        if (_wIn && zin)
            this.Translate(new Vector3(0, 0, (float)-delta * 10));
        if (_wOut && zout)
            this.Translate(new Vector3(0, 0, (float)delta * 10));

        _con.Set("text", this.Position);


        if (_cursor != null && _cursorPoint != null)
        {
            //Get the collision with map and change its X and Z value to always be in the center of a tile
            Vector3I collisionVector = (Vector3I)_cursor.GetCollisionPoint();
            _cursorPosLabel.Text = "Virtual Cursor Postion" + collisionVector.ToString();
            _cursorPoint.GlobalPosition = new Vector3(collisionVector.X - collisionVector.X % 2, 1.1f, collisionVector.Z - collisionVector.Z % 2);

            if (game_manager.CurrentState == game_manager.State.Building)
                HandleBuilding();
        }
    }

    public override void _Input(InputEvent @event)
    {
        _mLeft = _mRight = _mUp = _mDown = _wIn = _wOut = false;

        if (@event is InputEventMouseMotion mouse)
        {
            Vector2 vec = mouse.Position;
            if (vec.X < 5)
                _mLeft = true;
            else if (vec.X > 1915)
                _mRight = true;
            if (vec.Y < 20)
                _mUp = true;
            else if (vec.Y > 1060)
                _mDown = true;


            _mousePosLabel.Text = "Mouse position: " + vec.ToString();

            _cursor.Position = new Vector3(
                (vec.X - GetViewport().GetVisibleRect().Size.X / 2) * this.Position.Y / 1000,
                -((vec.Y - GetViewport().GetVisibleRect().Size.Y / 2) * this.Position.Y / 1000)
                , 0
                );
        }
        else if (@event is InputEventMouseButton mousebtn)
        {
            if (mousebtn.ButtonIndex == MouseButton.WheelUp)
                _wIn = true;
            else if (mousebtn.ButtonIndex == MouseButton.WheelDown)
                _wOut = true;
        }
    }
    private void CheckGame()
    {
        bool gameover = false;

        if (PR <= 0)
            gameover = true;
        else if (Nukes >= 100)
        {
            _btnEnd.Disabled = false;
            _btnEnd.Pressed += () => { _sndBtn.Play(); Nuke(); };
        }
        if (GameTime <= 0)
            gameover = true;

        if (gameover)
            Chatter = "Game Over.";
    }

    public void BuildBuilding(int price, int pr, int nukes, int kashFlow = 0)
    {
        if (price > Kash)
        {
            Chatter = "Not enough money.";
            CheckGame();
            return;
        }

        Nukes += nukes;
        PR += pr;
        Kash -= price;
        KashFlow += kashFlow;

        base_building tempBuilding = (base_building)CurrentBuilding.Duplicate();
        GetParent().CallDeferred("add_child", tempBuilding);

        game_manager.CurrentState = game_manager.State.Play;

        SetBarLabels();
        CheckGame();
    }

    private void MakeMoney()
    {
        Kash += KashFlow;
        GameTime--;
        _timer.Set("text", GameTime.ToString());

        SetBarLabels();
        CheckGame();
    }

    private void SetBarLabels()
    {
        _kash_count.Text = $"{Kash}M$({KashFlow}M$/s)";
        _nuke_count.Text = $"{Nukes} Megatons";
        _pr_count.Text = $"{PR}(%) Approval";
    }


    public void HandleBuilding()
    {
        if (CurrentBuilding != null)
        {
            CurrentBuilding.GlobalPosition = _cursorPoint.GlobalPosition;

            if (Input.IsActionJustPressed("rotate"))
            {
                CurrentBuilding.RotateY(Mathf.DegToRad(90));
            }

            if (Input.IsActionJustPressed("cancel"))
            {
                UnHandBuilding();
            }

            if (Input.IsActionJustPressed("build"))
            {
                if (CurrentBuilding.IsPlaceable)
                {
                    switch (CurrentBuilding.DisplayName)
                    {
                        case "Radio Tower":
                            propaganda_building radio = (propaganda_building)CurrentBuilding;
                            BuildBuilding(radio.KashCost, radio.Approval, 0);
                            break;
                        case "Nuke Silo":
                            arms_building silo = (arms_building)CurrentBuilding;
                            BuildBuilding(silo.KashCost, silo.Approval, silo.Megaton);
                            break;
                        case "Factory":
                            kash_building factory = (kash_building)CurrentBuilding;
                            BuildBuilding(factory.KashCost, 0, 0, factory.KashGenPerSec);
                            break;
                        default:
                            break;
                    }
                }
            }
        }
    }

    public void Nuke()
    {

        var scene = GD.Load<PackedScene>("res://endings/mad.tscn");
        var instance = scene.Instantiate();
        GetNode<Node>("/root/").AddChild(instance);
        this.GetParent().QueueFree();
    }
}