namespace DanieleMarotta.RiversongCodeShowcase
{
    [GameSystemGroup(typeof(DayOnlyAgentSpawnSystemsGroup))]
    public class ProviderAgentSystem : GameSystem, IUpdatable
    {
        private const int MaxAgentCount = 10;

        [InjectService]
        private GameConfig _config;

        [InjectService]
        private IEntityCache _entityCache;

        [InjectService]
        private IProductCatalog _productCatalog;

        [InjectService]
        private IAgentCommonLogic _agentCommonLogic;

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

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

            foreach (var provider in _entityCache.GetProviders())
                if (provider.Definition.FetchesProducts)
                    foreach (var (product, amount) in provider.Definition.ProvidedProducts)
                        if (_agentCommonLogic.TryFetchProductFromStorage(agentDefinition, provider, _productCatalog.GetHandle(product), amount, MaxAgentCount))
                            break;
        }
    }
}