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

namespace ProjectM.Authoring
{
    /// <summary>
    /// MC-2 — marks a Husk prefab as a SPITTER variant (the ranged "reposition" question). Compose WITH
    /// <see cref="EnemyAuthoring"/> on the prefab root: EnemyAuthoring bakes the common Husk components + the spit's
    /// damage/cooldown (EnemyStats.AttackDamage / AttackCooldownTicks), this bakes the server-only
    /// <see cref="SpitterState"/> (zeroed NextShotTick = ready). Component-PRESENCE is the discriminator EnemyAISystem
    /// branches on (no enum); the Grunt + Charger passes exclude it via <c>.WithNone&lt;SpitterState&gt;()</c>. The
    /// actual spit projectile is a SEPARATE ghost configured by the SpitterProjectilePrefab subscene singleton.
    /// </summary>
    public class SpitterAuthoring : MonoBehaviour
    {
        [Min(0f), Tooltip("Distance the Spitter tries to hold from its target (band centre).")]
        public float PreferredRange = 9f;

        [Min(0f), Tooltip("Half-width dead-zone around PreferredRange where it holds and fires.")]
        public float RangeTolerance = 1.5f;

        [Min(0f), Tooltip("Muzzle speed of the spit (world units/second). Slow enough to be dodgeable at range.")]
        public float ProjectileSpeed = 11f;

        [Min(0f), Tooltip("If the target closes within this AND the Spitter can't retreat, it fires point-blank.")]
        public float CorneredRange = 3f;

        [Min(1), Tooltip("Telegraph wind-up before the spit fires (ticks). Keep >= ~24 (> interp delay) to stay dodgeable.")]
        public int WindupTicks = 26;

        private class SpitterBaker : Baker<SpitterAuthoring>
        {
            public override void Bake(SpitterAuthoring authoring)
            {
                var entity = GetEntity(authoring, TransformUsageFlags.Dynamic);
                AddComponent(entity, new SpitterState
                {
                    PreferredRange = authoring.PreferredRange,
                    RangeTolerance = authoring.RangeTolerance,
                    ProjectileSpeed = authoring.ProjectileSpeed,
                    CorneredRange = authoring.CorneredRange,
                    WindupTicks = authoring.WindupTicks,
                    NextShotTick = 0,
                });
            }
        }
    }
}