#nullable enable
using System;
using System.Linq;
using Sandbox;

namespace Editor.Mcp
{
	internal static class SyntheticAimDriver
	{
		public static ToolOutcome<object> SimulateAim( string mode = "angles", float pitch = 0f, float yaw = 0f, float roll = 0f, float deltaX = 0f, float deltaY = 0f )
		{
			if ( !Game.IsPlaying )
			{
				return ToolOutcome<object>.Failure( null, ToolStatus.Unavailable, "aim.playmode_inactive", "Play mode must be active to simulate aim." );
			}

			var normMode = mode.ToLowerInvariant();
			if ( normMode == "delta" )
			{
				Sandbox.Input.MouseDelta = new Vector2( deltaX, deltaY );
				Sandbox.Input.AnalogLook = new Angles( deltaY, -deltaX, 0 );
				return ToolOutcome<object>.Ready( new
				{
					Mode = "delta",
					DeltaX = deltaX,
					DeltaY = deltaY,
					AnalogLook = Sandbox.Input.AnalogLook,
					MouseDelta = Sandbox.Input.MouseDelta
				} );
			}

			var clampedPitch = Math.Clamp( pitch, -89f, 89f );
			var targetAngles = new Angles( clampedPitch, yaw, roll );

			// 1. Set global engine AnalogLook
			Sandbox.Input.AnalogLook = targetAngles;

			// 2. Update any active player controller in scene
			string? targetFound = null;
			var players = Game.ActiveScene?.GetAllComponents<PlayerController>();
			var target = players?.FirstOrDefault();
			if ( target != null )
			{
				target.EyeAngles = targetAngles;
				targetFound = target.GameObject.Name;
			}

			// 3. Also update CameraComponent if no PlayerController handled it
			var camera = Game.ActiveScene?.GetAllComponents<CameraComponent>()?.FirstOrDefault();
			if ( camera != null && target == null )
			{
				camera.WorldRotation = targetAngles.ToRotation();
				targetFound = camera.GameObject.Name;
			}

			return ToolOutcome<object>.Ready( new
			{
				Mode = "angles",
				TargetGameObject = targetFound,
				AppliedAngles = new { Pitch = clampedPitch, Yaw = yaw, Roll = roll },
				AimForward = targetAngles.Forward
			} );
		}
	}
}