using System.Collections.Generic;
using ET.EventType;
using NUnit.Framework;
using UnityEngine;

namespace ET
{
    [FriendClass(typeof(Building))]
    public class AfterCreateBuilding_AddComponent : AEvent<EventType.AfterCreateBuilding>
    {
        protected override void Run(AfterCreateBuilding args)
        {
            var unit = args.Unit;
            var building = args.Building;
            // 升级的过程中不显示原先的建筑
            if (building.IsUpgrade == 0)
            {
                var buildingViewComp = building.AddComponent<BuildingViewComponent>();
                buildingViewComp.CreateName().Coroutine();
                
                // 处理农田
                var farmland = building.GetChildByType<Farmland>();
                if (farmland != null)
                {
                    farmland.AddComponent<FarmlandViewComponent>();
                }
                
                // 在不是升级且是新建的建筑时处理田的管理
                if (args.IsNew)
                {
                    ProcessCabin(unit, building);
                    ProcessFarmland(unit, building);
                }
            }

            // update map info
        }

        // 处理田间小屋的逻辑
        private void ProcessCabin(Unit unit, Building building)
        {
            var cabin = building.GetChildByType<Cabin>();
            if (cabin == null)
            {
                return;
            }
            
            var mapComp = unit.ZoneScene().CurrentScene().GetComponent<MapComponent>();

            if (mapComp == null)
            {
                return;
            }

            Vector2Int cabinSize = new Vector2Int(cabin.GetRange(), cabin.GetRange());
            var cabinRect = mapComp.GetUnitRectIndicesOfCenter(building.Position, cabinSize);
            var farmlands = unit.GetGrandChildren<Farmland>();
            List<long> inAreaFarmlandIds = new();
            foreach (Farmland farmland in farmlands)
            {
                var farmlandBuilding = farmland.GetParent<Building>();

                var mapPos = mapComp.WorldToMapPos(farmlandBuilding.Position);
                if (mapComp.IsPosInRect(mapPos, cabinRect))
                {
                    inAreaFarmlandIds.Add(farmland.Id);
                }
            }

            if (inAreaFarmlandIds.Count > 0)
            {
                CabinHelper.AddFarmland(unit, cabin, inAreaFarmlandIds).Coroutine();
            }
        }

        // 处理田的逻辑，如果在田间小屋的周围需要被管理
        private void ProcessFarmland(Unit unit, Building building)
        {
            var farmland = building.GetChildByType<Farmland>();
            if (farmland == null)
            {
                return;
            }
            
            var mapComp = unit.ZoneScene().CurrentScene().GetComponent<MapComponent>();

            if (mapComp == null)
            {
                return;
            }

            var cabins = unit.GetGrandChildren<Cabin>();
            
            List<long> inAreaFarmlandIds = new();
            Vector2Int cabinSize = new Vector2Int();
            foreach (Cabin cabin in cabins)
            {
                cabinSize.Set(cabin.GetRange(), cabin.GetRange());
                inAreaFarmlandIds.Clear();
                var cabinBuilding = cabin.GetParent<Building>();
                var cabinRect = mapComp.GetUnitRectIndicesOfCenter(cabinBuilding.Position, cabinSize);
                
                var mapPos = mapComp.WorldToMapPos(building.Position);
                if (mapComp.IsPosInRect(mapPos, cabinRect))
                {
                    inAreaFarmlandIds.Add(farmland.Id);
                    CabinHelper.AddFarmland(unit, cabin, inAreaFarmlandIds).Coroutine();

                    break;
                }
            }

        }
    }
}