using ProjectM.Simulation;
using Unity.Entities;
using UnityEngine;

namespace ProjectM.Authoring
{
    /// <summary>
    /// MC-1 — marks a Husk prefab as a CHARGER variant. Compose this WITH <see cref="EnemyAuthoring"/> on the
    /// prefab root (both bakers share the primary entity): EnemyAuthoring bakes the common Husk components and
    /// Charger-tuned stats; this bakes the server-only <see cref="LungeState"/> (zeroed = not lunging).
    /// Component-PRESENCE is the discriminator <c>EnemyAISystem</c> branches on — no enum/brain byte (the Burst
    /// cross-assembly-enum hazard) — routing the Charger to the commit→lunge→whiff-stagger pass while the Grunt
    /// pass excludes it via <c>.WithNone&lt;LungeState&gt;()</c>. NOT a <c>[GhostField]</c>: the lunged position
    /// replicates via stock LocalTransform like every Husk.
    /// </summary>
    public class ChargerAuthoring : MonoBehaviour
    {
        private class ChargerBaker : Baker<ChargerAuthoring>
        {
            public override void Bake(ChargerAuthoring authoring)
            {
                var entity = GetEntity(authoring, TransformUsageFlags.Dynamic);
                AddComponent<LungeState>(entity);
                // Slice 1 (Feature D): the replicated mid-lunge cue, baked DISABLED (a Charger spawns not-lunging).
                // EnemyAISystem derives the bit each tick from LungeState.UntilTick (visiting disabled entities via
                // .WithPresent<IsLunging>()). Adding this [GhostEnabledBit] changes the Charger ghost hash -> RE-BAKE.
                AddComponent<IsLunging>(entity);
                SetComponentEnabled<IsLunging>(entity, false);
            }
        }
    }
}