using UnityEngine;

namespace RR.Common.Behaviour
{
    public class Oscillator : MonoBehaviour
    {
        [Header("Motion")]
        [SerializeField] private Vector3 localAxis = Vector3.forward;
        [SerializeField, Min(0f)] private float amplitude = 20f;
        [SerializeField, Min(0f)] public float frequency = 1f;
        [SerializeField] private float phaseOffsetDeg = 0f;
        [SerializeField] private bool randomizePhaseOnEnable = false;
        [SerializeField] private bool useUnscaledTime = false;
        [SerializeField] private bool resetBaseOnEnable = true;

        private Quaternion _baseLocalRotation;
        private float _phaseRad;

        void Awake()
        {
            _baseLocalRotation = transform.localRotation;
            _phaseRad = phaseOffsetDeg * Mathf.Deg2Rad;
        }

        void OnEnable()
        {
            if (resetBaseOnEnable)
                _baseLocalRotation = transform.localRotation;

            if (randomizePhaseOnEnable)
                _phaseRad = Random.value * Mathf.PI * 2f;
        }

        void Update()
        {
            Vector3 axis = localAxis.sqrMagnitude > 1e-6f ? localAxis.normalized : Vector3.forward;
            float t = useUnscaledTime ? Time.unscaledTime : Time.time;

            float angle = amplitude * Mathf.Sin(2f * Mathf.PI * frequency * t + _phaseRad);
            transform.localRotation = _baseLocalRotation * Quaternion.AngleAxis(angle, axis);
        }
    }
}