using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace IStation.BLL
{
    /// <summary>
    /// 项目
    /// </summary>
    public partial class Project
    {
        private readonly IDAL.IProject<Entity.Project> _dal
        = DAL.Factory.DataAccess.CreateDAL<IDAL.IProject<Entity.Project>>(Settings.DataAccess.ProjectDLLName, Settings.DataAccess.DALNameSpace);

        #region Cache 

        //根据  查询缓存
        private List<Model.Project> GetCache()
        {
            return ProjectCacheHelper.GetSet(() =>
            {
                var entities = _dal.QueryAll();
                var models = Entity2Models(entities);
                if (models == null)
                {
                    models = new List<Model.Project>();
                }
                return models;
            }, ConfigHelper.CacheKeepTime, ConfigHelper.CacheRandomTime);
        }

        //根据 Id 更新缓存
        private void UpdateProjectCache( long Id)
        {
            var entity_ds = _dal.QueryById(Id);
            var model_ds = Entity2Model(entity_ds);
            var all = GetCache();
            var model = all.Find(x => x.Id == Id);
            if (model == null)
            {
                all.Add(model_ds);
            }
            else
            {
                model.Reset(model_ds);
            }
        }

        //根据 Ids 更新缓存
        private void UpdateProjectCache( IEnumerable<long> Ids)
        {
            if (Ids == null || Ids.Count() < 1)
                return;
            var entities = _dal.QueryByIds(Ids);
            var models = Entity2Models(entities);
            var all = GetCache();
            all.RemoveAll(x => Ids.Contains(x.Id));
            if (models != null && models.Count > 0)
            {
                all.AddRange(models);
            }
        }

        //根据 Id 移除缓存
        private void RemoveProjectCache( long Id)
        {
            var all = GetCache();
            all.RemoveAll(x => x.Id == Id);
        }

        #endregion

        #region Query 

        /// <summary>
        /// 查询全部
        /// </summary>
        public List<Model.Project> QueryAll()
        {
            var all = GetCache();
            return all.ToList();
        }

        /// <summary>
        /// 根据 Id查询
        /// </summary>
        public Model.Project QueryById( long Id)
        {
            var all = QueryAll();
            return all.Find(x => x.Id == Id);
        }

        /// <summary>
        /// 根据 Ids 查询
        /// </summary>
        public List<Model.Project> QueryByIds( IEnumerable<long> Ids)
        {
            if (Ids == null || Ids.Count() < 1)
                return default;
            var all = QueryAll();
            return all.Where(x => Ids.Contains(x.Id)).ToList();
        }
        #endregion

        #region Insert

        /// <summary>
        /// 插入
        /// </summary>
        public long Insert( Model.Project model)
        { 
            if (model == null)
                return default;
            var entities = Model2Entity(model);
            var Id = _dal.Insert(entities);
            if (Id > 0)
            {
                UpdateProjectCache(Id);
            }
            return Id;
        }

        /// <summary>
        /// 批量插入
        /// </summary>
        public bool Inserts( IEnumerable<Model.Project> list)
        {
            
            if (list == null || list.Count() < 1)
                return default;
            var entities = Model2Entities(list.ToList());
            var Ids = _dal.InsertsR(entities);
            if (Ids != null && Ids.Count > 0)
            {
                UpdateProjectCache(Ids);
                return true;
            }
            return false;
        }

        #endregion

        #region Update

        /// <summary>
        /// 更新
        /// </summary>
        public bool Update( Model.Project model)
        { 
            if (model == null)
                return default;
            if (model.Id < 1)
                return default;
            var entities = Model2Entity(model);
            var bol = _dal.Update(entities);
            if (bol)
            {
                UpdateProjectCache(model.Id);
            }
            return bol;
        }

        /// <summary>
        /// 批量更新
        /// </summary>
        public bool Updates( List<Model.Project> list)
        { 
            if (list == null || list.Count() < 1)
                return default;
            if (list.ToList().Exists(x => x.Id < 1))
                return default;
            var entities = Model2Entities(list.ToList());
            var bol = _dal.Updates(entities);
            if (bol)
            {
                UpdateProjectCache(list.Select(x => x.Id).ToList());
            }
            return bol;
        }

        #endregion

        #region Exist

        /// <summary>
        /// 根据 Id 判断是否存在
        /// </summary>
        public bool IsExistById( long Id)
        {
            var all = QueryAll();
            return all.Exists(x => x.Id == Id);
        } 
        #endregion

        #region Delete

        /// <summary>
        /// 根据 Id 删除
        /// </summary>
        public bool DeleteById( long Id, out string msg)
        {
            msg = string.Empty;
            var bol = _dal.DeleteById(Id);
            if (bol)
            {
                RemoveProjectCache(Id);
            }
            return bol;
        }

        #endregion

        #region Import

        /// <summary>
        /// 导入
        /// </summary>
        public long Import(string fileName, out string msg)
        {
            if (!File.Exists(fileName))
            {
                msg = "文件不存在";
                return default;
            }
            return _dal.Import(fileName, out msg);
        }

        #endregion

        #region Export

        /// <summary>
        /// 导出
        /// </summary>
        public bool Export(long id, string fileName, out string msg)
        {  
            if (id < 1)
            {
                msg = "id<1";
                return default;
            }
            return _dal.Export(id, fileName, out msg); 
        } 
        #endregion

    }
}