namespace DanieleMarotta.RiversongCodeShowcase
{
    [GameSystemGroup(typeof(DayOnlyAgentSpawnSystemsGroup))]
    public class ProducerDeliveryAgentSystem : GameSystem, IUpdatable
    {
        [InjectService]
        private GameConfig _config;

        [InjectService]
        private IEntityCache _entityCache;

        [InjectService]
        private IAgentCommonLogic _agentCommonLogic;

        public ProducerDeliveryAgentSystem(IServiceLocator serviceLocator) : base(serviceLocator)
        {
        }

        public void Update()
        {
            var agentDefinition = (AgentDefinition)_config.Agents.GenericAgent.Asset;

            foreach (var producer in _entityCache.GetProducers())
            {
                if (!producer.Definition.DeliversOutput) continue;

                ref var productionState = ref producer.GetProductionStateRW();
                ref var recipe = ref productionState.Recipe;

                foreach (var (productHandle, amount) in recipe.Inputs)
                    if (_agentCommonLogic.TryFetchProductFromStorage(agentDefinition, producer, productHandle, amount))
                        return;

                _agentCommonLogic.TryDeliverProduct(agentDefinition, producer, recipe.OutputProductHandle);
            }
        }
    }
}