using iWareCommon.Common.Entity;
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using iWareCommon.Common.EnumType;
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using iWareCommon.Common.Service;
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using iWareCommon.Utils;
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using iWareDataCore.ORM;
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using iWareDataCore.Properties;
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using iWareDataCore.RBAC.Dao;
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using iWareDataCore.RBAC.Entity;
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using System;
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using System.Collections.Generic;
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using System.Data.Entity.Validation;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace iWareDataCore.RBAC.Service
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{
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public class ContentService : CommonService<ContentEntity, RBACContent, DbModelCore>
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{
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private static object Lock = new object();
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private ContentService() : base(ContentDao.GetInstance()) { }
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private static ContentService Instance = null;
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/// <summary>
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/// 获取单例的方法
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/// </summary>
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/// <returns>菜单服务的单例实体</returns>
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public static ContentService GetInstance()
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{
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if (Instance == null)
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{
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lock (Lock)
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{
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if (Instance == null)
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{
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Instance = new ContentService();
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}
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}
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}
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return Instance;
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}
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public override int Delete(int id, out string msg)
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{
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msg = "";
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using (var dbModel = new DbModelCore())
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{
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try
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{
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var roleContents = dbModel.RBACRoleContents.Where(x => x.contentid == id).ToList();
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foreach (var roleContent in roleContents)
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{
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dbModel.RBACRoleContents.Remove(roleContent);
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}
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var one = dbModel.RBACContents.First(x => x.id == id);
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var count = dbModel.RBACContents.Where(x => x.parentid == id).ToList().Count;
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if (count > 0)
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{
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msg = "该菜单有子菜单，请先删除子菜单！";
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return -1;
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}
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dbModel.RBACContents.Remove(one);
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dbModel.SaveChanges();
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return id;
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}
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catch (DbEntityValidationException ex)
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{
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var errs = ex.EntityValidationErrors.SelectMany(validationResult => validationResult.ValidationErrors).Select(m => m.ErrorMessage);
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msg = string.Join(", ", errs);
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LogTextHelper.WriteLog(Resources.LogDir, this.ToString(), "Delete", msg);
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return -1;
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}
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catch (Exception ex)
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{
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msg = ex.Message;
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LogTextHelper.WriteLog(Resources.LogDir, this.ToString(), "Delete", ex.Message);
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return -1;
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}
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}
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}
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/// <summary>
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/// 判断souce能否移动到target
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/// </summary>
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/// <param name="sourceId">起始位置</param>
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/// <param name="targetId">目标位置</param>
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/// <param name="msg">异常错误信息</param>
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/// <returns>能否移动</returns>
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private bool CanMove(int sourceId, int targetId, DbModelCore dbModel, out string msg)
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{
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msg = "";
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var contents = ContentDao.GetInstance().QueryByParam(new QueryParam { Order = new Dictionary<string, object> { { "ContentIndex", "ASC" } } }, dbModel);
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if (contents == null)
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{
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return false;
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}
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var ids = new List<int>();
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foreach (var content in contents)
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{
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ids.Add(content.Id);
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}
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var childrenDictionary = TreeHelper<ContentEntity>.GetChildrenDictionary(contents);
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if (!ids.Contains(sourceId) && !sourceId.Equals(-1))
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{
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msg = "起始菜单不存在";
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return false;
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}
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if (!ids.Contains(targetId) && !targetId.Equals(-1))
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{
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msg = "目标菜单不存在";
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return false;
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}
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if (TreeHelper<ContentEntity>.IsChildOrEq(targetId, sourceId, childrenDictionary))
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{
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msg = "不能将菜单移动到本身或其子菜单下";
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return false;
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}
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return true;
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}
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public override int Update(ContentEntity t, out string msg)
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{
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using (var dbModel = new DbModelCore())
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{
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try
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{
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if (!CanMove(t.Id, t.ParentId, dbModel, out msg))
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{
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return -1;
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}
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return ContentDao.GetInstance().Update(t, dbModel);
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}
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catch (DbEntityValidationException ex)
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{
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var errs = ex.EntityValidationErrors.SelectMany(validationResult => validationResult.ValidationErrors).Select(m => m.ErrorMessage);
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msg = string.Join(", ", errs);
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LogTextHelper.WriteLog(Resources.LogDir, this.ToString(), "Update", msg);
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return -1;
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}
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catch (Exception ex)
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{
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msg = ex.HResult == (int)EDbError.记录已存在 ? "此纪录已存在" : ex.Message;
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LogTextHelper.WriteLog(Resources.LogDir, this.ToString(), "Update", msg);
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return -1;
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}
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}
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}
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}
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}
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