using Chickensoft.Introspection;
using Godot;

namespace GameJamDungeon;

public partial class EnemyLogic
{
  public partial record State
  {
    [Meta, Id("enemy_logic_state_idle")]
    public partial record Idle : Alive, IGet<Input.Alerted>, IGet<Input.PhysicsTick>, IGet<Input.PatrolToRandomSpot>
    {
      public Transition On(in Input.Alerted _)
      {
        return To<FollowPlayer>();
      }

      public Transition On(in Input.PhysicsTick input)
      {
        var delta = input.Delta;
        var enemy = Get<IEnemy>();
        var targetPosition = enemy.NavAgent.GetNextPathPosition();
        var velocity = (targetPosition - enemy.GlobalPosition).Normalized() * 3.0f;
        enemy.Velocity = velocity;
        enemy.Rotation = new Vector3(0, (float)Mathf.LerpAngle(enemy.Rotation.Y, Mathf.Atan2(enemy.Velocity.X, enemy.Velocity.Z), delta * 10.0), 0);

        Output(new Output.MovementComputed());
        return ToSelf();
      }

      public Transition On(in Input.PatrolToRandomSpot input)
      {
        var enemy = Get<IEnemy>();
        enemy.NavAgent.TargetPosition = input.PatrolTarget;
        return ToSelf();
      }
    }
  }
}