using Newtonsoft.Json;
using SqlSugar;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReZero.SuperAPI 
{
    internal class InsertRange : CommonDataService, IDataService
    {
        public async Task<object> ExecuteAction(DataModel dataModel)
        {
            var db = App.GetDbTableId(dataModel.TableId) ?? App.Db;
            var type = await EntityGeneratorManager.GetTypeAsync(dataModel.TableId);
            base.InitDb(type, db);
            this.InitData(type, db, dataModel);
            this.SetDefaultValue(dataModel, db, type);
            await db.InsertableByObject(dataModel.Data).PageSize(1000).ExecuteCommandAsync(); 
            base.ClearAll(dataModel);
            return true;
        }
        internal new void InitData(Type type, ISqlSugarClient db, DataModel dataModel)
        {
            var json = dataModel?.DefaultParameters?.FirstOrDefault().Value + "";
            object obj = JsonConvert.DeserializeObject(json, typeof(List<>).MakeGenericType(type))!;
            SetDefaultPkValue(type, db, obj);
            dataModel!.Data = obj;
        }

        private void SetDefaultPkValue(Type type, ISqlSugarClient db, object obj)
        {
            var entityInfo = db.EntityMaintenance.GetEntityInfo(type);
            var columnInfo = entityInfo.Columns.Where(it => it.IsPrimarykey).FirstOrDefault();
            if (columnInfo != null && IsSnowFlakeSingle(columnInfo))
            {
                foreach (var item in (IList)obj)
                {
                    if (Convert.ToInt64(columnInfo.PropertyInfo.GetValue(item)) == 0)
                    {
                        columnInfo.PropertyInfo.SetValue(item, SqlSugar.SnowFlakeSingle.Instance.NextId());
                    }
                }
            }
        }

        private void SetDefaultValue(DataModel dataModel, ISqlSugarClient db, Type type)
        {
            if (EntityMappingService.IsAnyDefaultValue(dataModel))
            {
                foreach (var item in (IList)dataModel.Data!)
                {
                    var para = new DataModel()
                    {
                        Data = item,
                        DefaultValueColumns=dataModel.DefaultValueColumns
                    };
                    EntityMappingService.GetDataByDefaultValueParameters(type, db, para);
                }
            }
        }
    }
}