using System;
using Sandbox;
using Sandbox.Citizen;
using ShrimpleCharacterController;

public sealed class Dedugan : Component
{
	[RequireComponent] public ShrimpleCharacterController.ShrimpleCharacterController Controller { get; set; }
	[RequireComponent] public CitizenAnimationHelper AnimationHelper { get; set; }

	public SkinnedModelRenderer Renderer { get; set; }
	public GameObject Camera { get; set; }

	[Property][Range(1f, 200f, 1f)] public float CamOffsetX { get; set; }
	[Property] public GameObject CameraPivot { get; set; }
	[Property] [Range(50f, 1200f, 10f)] public float WalkSpeed { get; set; } = 100f;
	[Property] [Range(100f, 1500f, 20f)] public float RunSpeed { get; set; } = 300f;
	[Property] [Range(25f, 1100f, 5f)] public float DuckSpeed { get; set; } = 50f;
	[Property] [Range(200f, 1500f, 20f)] public float JumpStrength { get; set; } = 350f;

	[Sync] public Angles NetworkedEyeAngles { get; set; } // для передачи углов другим клиентам
	private RagdollController RagdollController { get; set; }
	public Angles EyeAngles { get; set; }
	
	public Vector3 OverrideGravity { get; set; } = Vector3.Zero;

	private Vector3 _directionToAxis = Vector3.Up;
	private Vector3 _up = Vector3.Up;
	private Vector3 _forward = Vector3.Forward;
	private Vector3 _right = Vector3.Right;
	
	[Sync] private float IsDucking { get; set; } = 0f;

	private Vector3 wishDirection;

	protected override void OnStart()
	{
		base.OnStart();
		
		RagdollController = Components.Get<RagdollController>();
		Renderer = Components.Get<SkinnedModelRenderer>(FindMode.EverythingInSelfAndDescendants);

		if (!Network.IsOwner) return;

		// var cameraComponent = GameObject.GetComponentInParent<CameraComponent>(true, true) ;//new GameObject(true, "Camera");
		var cameraComponent = Scene.Camera ;//new GameObject(true, "Camera");
		Camera = cameraComponent.GameObject;
		Camera.SetParent(GameObject);
		// var cameraComponent = Camera.Components.Create<CameraComponent>();
		cameraComponent.ZFar = 32768f;
		cameraComponent.FieldOfView = 100f;
	}

	protected override void DrawGizmos()
	{
		base.DrawGizmos();

		Gizmo.Transform = global::Transform.Zero;
		Gizmo.Draw.LineThickness = 2f;
		Gizmo.Draw.IgnoreDepth = true;

		Gizmo.Draw.Color = Color.Blue;
		Gizmo.Draw.Arrow(WorldPosition, WorldPosition + (_up * 1200f));

		Gizmo.Draw.Color = Color.Red;
		Gizmo.Draw.Arrow(WorldPosition, WorldPosition + (_forward * 1200f));

		Gizmo.Draw.Color = Color.Green;
		Gizmo.Draw.Arrow(WorldPosition, WorldPosition + (_right * 1200f));

		Gizmo.Draw.Color = Color.Black;
		Gizmo.Draw.Arrow(WorldPosition, WorldPosition + (-_up * 100f));

		Gizmo.Draw.Color = Color.Magenta;
		Gizmo.Draw.Arrow(WorldPosition, WorldPosition + wishDirection * 10f);

		var textStartPos = new Vector2(10f);
		Gizmo.Draw.ScreenText($"IsOnGround: {Controller.IsOnGround}", textStartPos);
		Gizmo.Draw.ScreenText($"IsSlipping: {Controller.IsSlipping}", textStartPos.WithY(30f));
		Gizmo.Draw.ScreenText($"WishVelocity: {Controller.WishVelocity}", textStartPos.WithY(50f));
		Gizmo.Draw.ScreenText($"Test: {Vector3.Dot(_right, _up)}", textStartPos.WithY(70f));

		Gizmo.Draw.ScreenBiasedHalfCircle(WorldPosition, 3f);
	}

	protected override void OnFixedUpdate()
	{
		base.OnFixedUpdate();



		if ( OverrideGravity == Vector3.Zero )
		{
			_directionToAxis = Vector3.VectorPlaneProject(WorldPosition, Vector3.Right).Normal;
		
		}
		else
		{
			_directionToAxis = OverrideGravity;
		}
		
	
		
		_up = -_directionToAxis;
		_forward = Vector3.Right;
		_right = Vector3.Cross(_up, _forward).Normal;

		Controller.Up = _up;
		Controller.VectorGravity = -_up * 850f;

		if (Network.IsOwner)
		{
			LookAtSurfaceNormal(_up, _forward);

			wishDirection = Input.AnalogMove.Normal * Rotation.FromYaw(EyeAngles.yaw) * WorldRotation;

			var isDucking = Input.Down("Duck");
			var isRunning = Input.Down("Run");
			var wishSpeed = isDucking ? DuckSpeed :
				isRunning ? RunSpeed : WalkSpeed;

			var ragdollMul = RagdollController.Enabled ? 0f : 1f;
			Controller.WishVelocity = wishDirection * wishSpeed * ragdollMul;

			if (Input.Pressed("Jump") && Controller.IsOnGround)
			{
				Controller.Punch(-Controller.AppliedGravity.Normal * JumpStrength);
				AnimationHelper?.TriggerJump();
			}
			
			if (!AnimationHelper.IsValid()) return;
			IsDucking = Input.Down("Duck") ? 1f : 0f;
			
		}

		if ( !RagdollController.Enabled )
		{
			Controller.Move();
		}
		else
		{
			Controller.Velocity = 0;
		}

		if (!AnimationHelper.IsValid()) return;
		AnimationHelper.DuckLevel = IsDucking;
		AnimationHelper.WithWishVelocity(Controller.WishVelocity);
		AnimationHelper.WithVelocity(Controller.Velocity);
		AnimationHelper.IsGrounded = Controller.IsOnGround;
	}

	private void LookAtSurfaceNormal(Vector3 up, Vector3 moveDirection)
	{
		var newRotation = Rotation.LookAt(moveDirection, up);
		WorldRotation = Rotation.Lerp(WorldRotation, newRotation, Time.Delta * 10f);
	}

	protected override void OnUpdate()
	{
		base.OnUpdate();

		if (Network.IsOwner)
		{
			EyeAngles += Input.AnalogLook;
			EyeAngles = EyeAngles.WithPitch(MathX.Clamp(EyeAngles.pitch, -89f, 89f));
			NetworkedEyeAngles = EyeAngles;

			RotateCamera();
			
			var targetRotation = Rotation.LookAt(Rotation.FromYaw(EyeAngles.yaw).Forward, -_directionToAxis);
			var currentForward = Renderer.LocalRotation.Forward;
			float angleDiff = currentForward.Angle(targetRotation.Forward);
			
			if (angleDiff > 15f && Controller.Velocity.Length > 10f)
			{
				Renderer.LocalRotation = Rotation.Slerp(Renderer.LocalRotation, Rotation.FromYaw(EyeAngles.yaw), Time.Delta * 3f);
			}
			
			if ( Input.Pressed( "Use" ) )
			{
				var tr = Scene.Trace
					.Ray( Camera.WorldPosition, Camera.WorldPosition + Camera.WorldRotation.Forward * 500f ).IgnoreGameObjectHierarchy(GameObject).Run();

				if ( tr.Hit)
				{
					tr.GameObject.GetComponent<IInteractable>()?.OnUse();
				}
			}
			
		}
		else
		{
			EyeAngles = NetworkedEyeAngles;
			Renderer.LocalRotation = Rotation.Slerp(Renderer.LocalRotation, Rotation.FromYaw(EyeAngles.yaw), Time.Delta * 5f);
		}
	}

	void RotateCamera()
	{
		if ( RagdollController.Enabled )
		{
			var cameraOffset = RagdollController.WorldRotation.Up * 20f - Camera.WorldRotation.Forward * 200f;//RagdollController.LocalPosition + RagdollController.LocalRotation.Backward * (CamOffsetX + EyeAngles.pitch * .5f);
			Camera.WorldPosition = Vector3.Lerp( Camera.WorldPosition,  RagdollController.WorldPosition + cameraOffset, Time.Delta * 5f);
			Camera.LocalRotation = Rotation.Lerp(Camera.LocalRotation, EyeAngles.ToRotation(), Time.Delta * 2f);
		}
		else
		{
			Camera.LocalRotation = EyeAngles.ToRotation();
			var cameraOffset = CameraPivot.LocalPosition + CameraPivot.LocalRotation.Backward * (CamOffsetX + EyeAngles.pitch * .5f);
			Camera.LocalPosition = cameraOffset * Camera.LocalRotation;
		}
	}
	


	// void RotateCamera()
	// {
	// 	// 1. Задание локального вращения камеры
	// 	Rotation camRot = EyeAngles.ToRotation();
	// 	Camera.LocalRotation = camRot;
	//
	// 	// 2. Позиция Pivot'а в мире (нужно для трейса)
	// 	var pivotWorldPos = CameraPivot.LocalPosition;
	//
	// 	// 3. Смещение плеча (локально → в мир)
	// 	var shoulderOffsetWorld = Vector3.Zero;
	//
	// 	// 4. Желаемая мировая позиция камеры
	// 	var desiredWorldPos = pivotWorldPos - camRot.Forward * 10f + shoulderOffsetWorld;
	//
	// 	// 5. Трейс от Pivot до желаемой позиции камеры
	// 	var tr = Scene.Trace
	// 		.Ray(pivotWorldPos, desiredWorldPos)
	// 		.Radius(4f)
	// 		.IgnoreGameObjectHierarchy(GameObject)
	// 		.Run();
	//
	// 	// 6. Получаем локальную позицию относительно CameraPivot
	// 	var finalWorldCamPos = tr.EndPosition;
	// 	var finalLocalCamPos = CameraPivot.Transform.WorldToLocal.Transform(finalWorldCamPos);
	//
	// 	// 7. Применяем к камере
	// 	Camera.LocalPosition = finalLocalCamPos;
	// 	Camera.LocalRotation = camRot;
	// }
}