using UnityEngine;

namespace ProjectM.Client
{
    /// <summary>
    /// Live-tunable knobs for <see cref="AmbientMotionSystem"/> — the Phase 1.5 "world alive" ambient layer
    /// (per-biome drift particles + idle foliage sway + walk-through rustle). Mirrors the
    /// <see cref="WorldAtmosphereConfig"/>/<see cref="DynamicLightConfig"/> bridge idiom: a MonoBehaviour in
    /// the gameplay scene with a static <see cref="Instance"/> the client presentation system reads (falling
    /// back to these same defaults when absent). Pure presentation — never touches the simulation.
    /// </summary>
    public sealed class AmbientMotionConfig : MonoBehaviour
    {
        public static AmbientMotionConfig Instance;

        [Header("Master")]
        public bool Enabled = true;

        [Header("Biome drift particles (emitter follows the camera; sim space stays world)")]
        public bool DriftEnabled = true;
        [Min(0f)] public float DriftRate = 28f;
        [Min(0.01f)] public float DriftSize = 0.09f;
        public Color MeadowMoteColor = new Color(0.62f, 0.85f, 0.60f, 0.35f);
        public Color AridDustColor = new Color(0.85f, 0.68f, 0.45f, 0.28f);
        public Color CavernMoteColor = new Color(0.55f, 0.65f, 0.95f, 0.33f);
        public Color BlightSporeColor = new Color(0.72f, 0.50f, 0.85f, 0.33f);
        public Vector3 AridWind = new Vector3(2.2f, -0.15f, 0.5f);

        [Header("Idle foliage sway (root tilt) — OFF by default since 1.5b: ALL Synty flora uses the Synty/Foliage")]
        [Header("VERTEX-wind shader, so root tilt double-animates. Keep for A/B; rustle below stays the reactive layer.")]
        public bool SwayEnabled = false;
        [Min(1f)] public float SwayRadius = 30f;
        [Min(0f)] public float SwayAmpDeg = 1.4f;
        [Min(0.05f)] public float SwayHz = 0.8f;

        [Header("Walk-through rustle (local player brushing flora)")]
        public bool RustleEnabled = true;
        [Min(0.2f)] public float RustleRadius = 1.7f;
        [Min(0f)] public float RustleAmpDeg = 7f;
        [Min(0.5f)] public float RustleHz = 9f;
        [Min(0.2f)] public float RustleDecay = 2.5f;

        void OnEnable() { Instance = this; }
        void OnDisable() { if (Instance == this) Instance = null; }

        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
        static void ResetStatics() { Instance = null; }
    }
}