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

namespace ProjectM.Authoring
{
    /// <summary>
    /// Authoring for a Harvester machine ghost prefab (duplicate a structure ghost so the ownerless interpolated
    /// GhostAuthoringComponent comes free). Bakes <see cref="PlacedStructure"/>{Type=Harvester} + <see cref="Harvester"/>
    /// stats + an empty <see cref="MachineOutput"/> buffer. BuildPlaceSystem stamps the Cell at placement; the
    /// production system initializes the tick baseline on first encounter (NextTick/LastProcessedTick baked 0).
    /// </summary>
    public class HarvesterAuthoring : MonoBehaviour
    {
        [Tooltip("Resource id this generator produces (1=Aether, 2=Ore, 3=Biomass).")]
        public byte OutputResourceId = 2; // Ore
        [Min(1)] public int Yield = 1;
        [Min(1)] public int PeriodTicks = 60;

        private class HarvesterBaker : Baker<HarvesterAuthoring>
        {
            public override void Bake(HarvesterAuthoring authoring)
            {
                var entity = GetEntity(authoring, TransformUsageFlags.Dynamic);
                AddComponent(entity, new PlacedStructure
                {
                    Type = StructureType.Harvester,
                    Cell = default,
                    NextTick = 0u,
                    LastProcessedTick = 0u,
                });
                AddComponent(entity, new Harvester
                {
                    ResourceId = authoring.OutputResourceId,
                    Yield = authoring.Yield,
                    PeriodTicks = authoring.PeriodTicks,
                });
                AddBuffer<MachineOutput>(entity);
            }
        }
    }
}