using Godot;
using System;

public partial class GobalCamera : Camera2D
{
    public Vector2 zoomSpeed = new Vector2(0.05f, 0.05f);
    public float zoomMin = 0.1f;
    public float zoomMax = 4.0f;
    [Export] public float dragSensitivity = 0.35f;
    [Export] public float cameraStepSize = 10.0f;

    public override void _Input(InputEvent @event)
    {
        base._Input(@event);

        if (@event is InputEventMouseMotion mouseMotion && Input.IsMouseButtonPressed(MouseButton.Middle))
        {
            Position -= mouseMotion.Relative * dragSensitivity / Zoom;
        }

        if (@event is InputEventAction eventAction && eventAction.IsPressed())
        {
            switch (eventAction.AsText())
            {
                case "camera_up":
                    Position -= new Vector2(0, cameraStepSize);
                    break;
                case "camera_down":
                    Position += new Vector2(0, cameraStepSize);
                    break;
                case "camera_left":
                    Position -= new Vector2(cameraStepSize, 0);
                    break;
                case "camera_right":
                    Position += new Vector2(cameraStepSize, 0);
                    break;
            }

            GD.Print(eventAction.AsText());
        }

        if (@event is InputEventMouseButton mouseButton)
        {
            switch (mouseButton.ButtonIndex)
            {
                case MouseButton.WheelUp:
                    Zoom += zoomSpeed;
                    Zoom.Clamp(zoomMin, zoomMax);
                    break;
                case MouseButton.WheelDown:
                    Zoom -= zoomSpeed;
                    Zoom.Clamp(zoomMin, zoomMax);
                    break;
            }

            Zoom.Clamp(zoomMin, zoomMax);
        }
    }

    public static Vector2 Lerp(Vector2 from, Vector2 to, float weight) => from + (to - from) * weight;
}