using System.Collections.Generic;
using System.Linq;

namespace ET
{
    [FriendClass(typeof (Construct))]
    [FriendClass(typeof (Building))]
    [FriendClass(typeof (Farmland))]
    public static class ConstructOperate
    {
        public static Construct CreateConstruct(Unit unit, int configId, float x, float y, long id = 0, long buildingId = 0)
        {
            // if (unit.Food < 0)
            // {
            //     return null;
            // }
            var construct = unit.GetOrAddComponent<ConstructComponent>().CreateConstruct(unit,configId, x, y, id, buildingId);
            return construct;
        }

        public static int GoConstruct(Unit unit, long constructId, List<long> peopleIdList)
        {
            var construct = unit.GetComponent<ConstructComponent>().GetChild<Construct>(constructId);
            if (construct == null)
            {
                return ErrorCode.ERR_ConstructNotFound;
            }

            List<People> peopleList = new List<People>();
            foreach (var id in peopleIdList)
            {
                People people = unit.GetComponent<PeopleComponent>().GetChild<People>(id);
                if (people == null)
                {
                    return ErrorCode.ERR_PeopleNotFound;
                }

                var targetId = people.GetTargetId();
                if (targetId == constructId)
                {
                    return ErrorCode.ERR_BehaveError;
                }

                peopleList.Add(people);
            }

            foreach (var people in peopleList)
            {
                PeopleOperate.StopBehave(unit, people);
                construct.PreparePeopleIdList.Add(people.Id);
                people.SetBehaveType(ConstBehaveType.BEHAVE_PREPARE_CONSTRUCT);
                people.SetTargetId(construct.Id);
            }

            return ErrorCode.ERR_Success;
        }

        public static int StopConstruct(Unit unit, long constructId, long peopleId)
        {
            People people = unit.GetComponent<PeopleComponent>().GetChild<People>(peopleId);
            if (people == null)
            {
                return ErrorCode.ERR_PeopleNotFound;
            }

            var construct = unit.GetComponent<ConstructComponent>().GetChild<Construct>(constructId);
            if (construct == null)
            {
                return ErrorCode.ERR_ConstructNotFound;
            }

            if (construct.PeopleIdList.Remove(peopleId) || construct.PreparePeopleIdList.Remove(peopleId))
            {
                people.SetTargetId(0);
                people.SetBehaveType(ConstBehaveType.BEHAVE_IDLE);
                return ErrorCode.ERR_Success;
            }

            return ErrorCode.ERR_StopConstructError;
        }

        public static int StartConstruct(Unit unit, long constructId, long peopleId)
        {
            People people = unit.GetComponent<PeopleComponent>().GetChild<People>(peopleId);
            if (people == null)
            {
                return ErrorCode.ERR_PeopleNotFound;
            }

            var construct = unit.GetComponent<ConstructComponent>().GetChild<Construct>(constructId);
            if (construct == null)
            {
                return ErrorCode.ERR_ConstructNotFound;
            }

            if (construct.PreparePeopleIdList.Remove(peopleId))
            {
                construct.PeopleIdList.Add(peopleId);
                if (construct.IsConstructed == 0)
                {
                    construct.IsConstructed = 1;
                }

                people.SetBehaveType(ConstBehaveType.BEHAVE_CONSTRUCT);
                return ErrorCode.ERR_Success;
            }

            return ErrorCode.ERR_OperateFail;
        }

        public static int CancelConstruct(Unit unit, long constructId)
        {
            var construct = unit.GetComponent<ConstructComponent>().GetChild<Construct>(constructId);
            if (construct == null)
            {
                return ErrorCode.ERR_ConstructNotFound;
            }

            var rate = 100;
            if (construct.IsConstructed == 1)
            {
                rate = WorldParametersConfigCategory.Instance.Get(WorldParam.BuildingReturnRatio).Value[0];
            }

            for (int i = 0; i < construct.Config.ItemId.Length; i++)
            {
                unit.GetOrAddComponent<StoreComponent>().Add(construct.Config.ItemId[i], construct.Config.ItemNum[i] * rate / 100);
            }

            List<long> idList = construct.PeopleIdList.Union(construct.PreparePeopleIdList).ToList<long>();
            foreach (var id in idList)
            {
                People people = unit.GetComponent<PeopleComponent>().GetChild<People>(id);
                people.SetBehaveType(ConstBehaveType.BEHAVE_IDLE);
                people.SetTargetId(0);
            }

            construct.Dispose();
            return ErrorCode.ERR_Success;
        }

        public static Building ConstructFinish(Unit unit, long constructId)
        {
            var construct = unit.GetComponent<ConstructComponent>().GetChild<Construct>(constructId);
            Building build;
            if (construct == null)
            {
                return null;
            }

            if (construct.IsUpgrade)
            {
                build = unit.GetOrAddComponent<BuildingComponent>().GetChild<Building>(construct.BuildingId);
                build.IsUpgrade = 0;
            }
            else
            {
                build = unit.GetOrAddComponent<BuildingComponent>().AddChild<Building>();
                build.Position.x = construct.X;
                build.Position.y = construct.Y;
                //如果是农场
                if (build.Config.Special == (int)StructureSpecialEnum.FARMLAND)
                {
                    var farmland = build.AddChild<Farmland>();
                    farmland.FarmlandState = FarmlandState.FARMLAND_STATE_FREE;
                }
            }

            build.ConfigId = construct.Config.MixtureID;
            StructureConfig structureConfig = StructureConfigCategory.Instance.Get(build.ConfigId);
            if (structureConfig != null)
            {
                build.Durable = structureConfig.Durable;
            }

            List<long> idList = construct.PeopleIdList.Union(construct.PreparePeopleIdList).ToList<long>();
            foreach (var id in idList)
            {
                People people = unit.GetComponent<PeopleComponent>().GetChild<People>(id);
                people.SetBehaveType(ConstBehaveType.BEHAVE_IDLE);
                people.SetTargetId(0);
            }

            construct.Dispose();
            return build;
        }

        public static bool CheckOutBuildingByIds(Unit unit, int[] StructureID)
        {
            BuildingComponent bc = unit.GetOrAddComponent<BuildingComponent>();
            return bc.CheckOutBuildingByIds(StructureID);
        }

        public static bool CheckOutBuildingBySpecialType(Unit unit, int special)
        {
            BuildingComponent bc = unit.GetOrAddComponent<BuildingComponent>();
            return bc.CheckOutBuildingBySpecialType(special);
        }
    }
}