namespace DanieleMarotta.RiversongCodeShowcase
{
    [GameSystemGroup(typeof(DayOnlyAgentSpawnSystemsGroup))]
    public class FarmingAgentSystem : GameSystem, IUpdatable
    {
        private const int MaxAgentCount = 1;

        [InjectService]
        private GameConfig _config;

        [InjectService]
        private IEntityCache _entityCache;

        [InjectService]
        private ITileSpace _tileSpace;

        [InjectService]
        private IAgentFactory _agentFactory;

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

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

            foreach (var farm in _entityCache.GetFarmBuildings())
            {
                if (!_agentFactory.CanSpawnAgent(farm, MaxAgentCount, AgentJob.Farmer)) continue;

                var position = _tileSpace.TileToWorld(farm.Rect.Center);
                var agent = _agentFactory.CreateVillager(agentDefinition, farm, position, AgentJob.Farmer);

                IntentQueue.WorkFertileTile(ref agent.GetIntentQueueRW(), farm.Rect, farm.Id, agent.Id, farm.Definition.Range);
            }
        }
    }
}