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

namespace ProjectM.Authoring
{
    /// <summary>
    /// Authoring for the turret structure ghost prefab (duplicate UpgradePickup.prefab so the ownerless
    /// interpolated GhostAuthoringComponent comes free). Bakes <see cref="PlacedStructure"/>{Type=Turret} +
    /// <see cref="Turret"/> stats. BuildPlaceSystem stamps Cell + LastProcessedTick at placement.
    /// </summary>
    public class TurretAuthoring : MonoBehaviour
    {
        [Min(1f)] public float Range = 10f;
        [Min(1)] public int CooldownTicks = 30;
        [Min(1f)] public float Damage = 12f;
        [Min(1f)] public float MaxHp = 120f;

        private class TurretBaker : Baker<TurretAuthoring>
        {
            public override void Bake(TurretAuthoring authoring)
            {
                var entity = GetEntity(authoring, TransformUsageFlags.Dynamic);
                AddComponent(entity, new PlacedStructure
                {
                    Type = StructureType.Turret,
                    Cell = default,
                    NextTick = 0u,
                    LastProcessedTick = 0u,
                });
                AddComponent(entity, new Turret
                {
                    Range = authoring.Range,
                    CooldownTicks = authoring.CooldownTicks,
                    Damage = authoring.Damage,
                });
                // EB-1: structures are damageable + destructible (Husks push for them; HealthApplyDamageSystem
                // destroys a Destructible at Health<=0). The DamageEvent buffer MUST exist on the archetype or an
                // AI/turret strike crashes at ECB playback. NO HitRadius on purpose -> ProjectileDamageSystem (needs
                // Health+HitRadius) ignores structures, so player shots never friendly-fire your own turret.
                AddComponent(entity, new Health { Current = authoring.MaxHp, Max = authoring.MaxHp });
                AddBuffer<DamageEvent>(entity);
                AddComponent<Destructible>(entity);
            }
        }
    }
}