using System.Collections.Generic;

namespace ET
{
    [FriendClass(typeof (Unit))]
    [FriendClass(typeof (Farmland))]
    public static class FarmlandOperate
    {
        public static int GoPlant(Unit unit, Farmland farmland, People people)
        {
            if (farmland.FarmlandState != FarmlandState.FARMLAND_STATE_SEED)
            {
                return ErrorCode.ERR_FarmlandNotSeed;
            }

            PeopleOperate.ChangeBehave(unit, people, ConstBehaveType.BEHAVE_PREPARE_PLANT, farmland.Id);
            farmland.PeopleId = people.Id;
            return ErrorCode.ERR_Success;
        }

        public static int FinishPlant(Unit unit, Farmland farmland, People people)
        {
            if (farmland.FarmlandState != FarmlandState.FARMLAND_STATE_SEED)
            {
                return ErrorCode.ERR_FarmlandNotFree;
            }

            farmland.Plant();
            PeopleOperate.ChangeBehave(unit, people, ConstBehaveType.BEHAVE_IDLE);

            return ErrorCode.ERR_Success;
        }

        public static int GoHarvest(Unit unit, Farmland farmland, People people)
        {
            if (farmland.FarmlandState != FarmlandState.FARMLAND_STATE_RIPE)
            {
                return ErrorCode.ERR_FarmlandNotSeed;
            }

            PeopleOperate.ChangeBehave(unit, people, ConstBehaveType.BEHAVE_PREPARE_HARVEST, farmland.Id);
            farmland.PeopleId = people.Id;
            return ErrorCode.ERR_Success;
        }

        public static int FinishHarvest(Unit unit, Farmland farmland, People people)
        {
            if (farmland.FarmlandState == FarmlandState.FARMLAND_STATE_RIPE)
            {
                var storeNc = unit.GetComponent<StoreComponent>();
                storeNc.Add(farmland.Config.ProductID, farmland.Config.BasicProduction);
                if (farmland.Config.ByProduct > 0)
                {
                    storeNc.Add(farmland.Config.ByProduct, farmland.Config.ByProductNum);
                }

                storeNc.Add(farmland.CropCfgId, farmland.Config.SeedProduce);
                farmland.Harvest();
                PeopleOperate.StopBehave(unit, people);
                return ErrorCode.ERR_Success;
            }

            PeopleOperate.ChangeBehave(unit, people, ConstBehaveType.BEHAVE_IDLE);

            return ErrorCode.ERR_FarmlandNotRipe;
        }

        public static int FarmlandSeed(Unit unit, Farmland farmland, int CropCfgId)
        {
            var cropCfg = CropConfigCategory.Instance.Get(CropCfgId);
            var sc = unit.GetComponent<StoreComponent>();
            if (sc.Remove(cropCfg.SeedNeed, cropCfg.SeedNum))
            {
                farmland.Seed(cropCfg.Id);
                return ErrorCode.ERR_Success;
            }

            return ErrorCode.ERR_OperateFail;
        }
    }
}