using Cysharp.Threading.Tasks;
using Random = UnityEngine.Random;

namespace DanieleMarotta.RiversongCodeShowcase
{
    public class HarvestFertileTileIntentExecutionLogic : IntentExecutionLogic
    {
        private IEntityCollection _entityCollection;

        private IProductStackFactory _productStackFactory;

        private World _world;

        private ITileSpace _tileSpace;

        public override UniTask InitializeAsync(IServiceLocator serviceLocator)
        {
            _entityCollection = serviceLocator.GetService<IEntityCollection>();
            _productStackFactory = serviceLocator.GetService<IProductStackFactory>();
            _world = serviceLocator.GetService<World>();
            _tileSpace = serviceLocator.GetService<ITileSpace>();

            return UniTask.CompletedTask;
        }

        public override IntentExecutionResult Execute(Agent agent, in AgentIntent intent)
        {
            if (!_entityCollection.TryGet<Building>(agent.HomeId, out var farm)) return IntentExecutionResult.Failure;

            var tile = _tileSpace.WorldToTile(agent.Position);

            ref var fertility = ref _world.Fertility.GetValueRW(tile);
            fertility.CurrentFertility = 0;

            var product = farm.Definition.FarmProduct;
            var amount = Random.Range(farm.Definition.MinDroppedAmount, farm.Definition.MaxDroppedAmount + 1);
            _productStackFactory.CreateOrMerge(tile, product, amount);

            return IntentExecutionResult.Success;
        }
    }
}