using Sandbox;
using System;
using System.Reflection.Metadata;

public sealed class SpringArm : Component
{
	[Property] public GameObject TargetTransform { get; set; } //Object to follow.

	[Property] public Vector3 Offset = new Vector3( 270, -4, 75 );

	[Property] public float maxClamp = 85.0f;
	[Property] public float minClamp = -85.0f;

	[Property, Category( "Smoothers" )] private float CameraLerpSpeed = 10f;

	public GameObject camera;

	protected override void OnAwake()
	{
		//initial camera position.

		camera = this.GameObject.Children[0]; //the camera is the first child of the pivot
		if ( camera != null )
		{
			camera.LocalPosition = Offset;
		}

	}
	protected override void OnUpdate()
	{
		HandlePosition();
		HandleRotation( Input.AnalogLook.yaw, Input.AnalogLook.pitch );
	}
	public void HandlePosition()
	{
		if ( camera == null )
			return;

		WorldPosition = Vector3.Lerp(
			WorldPosition,
			TargetTransform.WorldPosition,
			Time.Delta * CameraLerpSpeed
		);
	}

	public void HandleRotation( float yaw, float pitch )
	{
		// Get current rotation in Euler angles
		var angles = WorldRotation.Angles();

		// Apply yaw normally
		angles.yaw += yaw;

		// Apply pitch and clamp
		angles.pitch = Math.Clamp( angles.pitch + pitch, minClamp, maxClamp );

		// Keep roll at 0
		angles.roll = 0f;

		// Reconstruct rotation
		WorldRotation = Rotation.From( angles );
	}
}