using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Stone.Entity;
using System.Data;
using System.Windows.Forms;

namespace Stone.User
{
    public class F_Authority
    {
        public static void Init(TreeView leftTree, string UserName)
        {
            leftTree.CheckBoxes = true;

            DataSet dsMenu = GetData();
            DataTable dtAuthority = GetAuthority(UserName);
            DataRow[] drOnes = dsMenu.Tables[0].Select("[Levels]=1", "[Sort] asc");
            foreach (DataRow drOne in drOnes)
            {
                string oneCode = drOne["Code"].ToString();

                TreeNode nodeOne = new TreeNode(drOne["Name"].ToString(), 0, 1);
                if (Convert.ToInt32(drOne["IsChild"]) == 1) nodeOne = new TreeNode(drOne["Name"].ToString(), 2, 3);
                nodeOne.Tag = drOne["Code"].ToString();

                if (dtAuthority.Select("[MenuCode]='" + oneCode + "'").Length > 0) nodeOne.Checked = true;


                DataRow[] drTows = dsMenu.Tables[0].Select("[Levels]=2 and [Code] like '" + oneCode + "%'", "[Sort] asc");
                foreach (DataRow drTow in drTows)
                {
                    string towCode = drTow["Code"].ToString();
                    

                    TreeNode nodeTow = new TreeNode(drTow["Name"].ToString(), 0, 1);
                    if (Convert.ToInt32(drTow["IsChild"]) == 1) nodeTow = new TreeNode(drTow["Name"].ToString(), 2, 3);
                    nodeTow.Tag = drTow["Code"].ToString();

                    if (dtAuthority.Select("[MenuCode]='" + towCode + "'").Length > 0) nodeTow.Checked = true;

                    DataRow[] drThrees = dsMenu.Tables[0].Select("[Levels]=3 and [Code] like '" + towCode + "%'", "[Sort] asc");
                    foreach (DataRow drThree in drThrees)
                    {
                        string treeCode = drThree["Code"].ToString();

                        TreeNode nodeThree = new TreeNode(drThree["Name"].ToString(), 0, 1);
                        if (Convert.ToInt32(drThree["IsChild"]) == 1) nodeThree = new TreeNode(drThree["Name"].ToString(), 2, 3);
                        nodeThree.Tag = drThree["Code"].ToString();

                        if (dtAuthority.Select("[MenuCode]='" + treeCode + "'").Length > 0) nodeThree.Checked = true;

                        nodeTow.Nodes.Add(nodeThree);
                    }


                    nodeOne.Nodes.Add(nodeTow);
                }

                leftTree.Nodes.Add(nodeOne);
            }


            
            leftTree.ExpandAll();
        }

        private static DataSet GetData()
        {
            Entity_t_Sys_Menu t_Menu = new Entity_t_Sys_Menu();
            return t_Menu.GetData("[IsShow]=1");

        }

        private static DataTable GetAuthority(string UserName)
        {
            Entity_t_Sys_User t_Sys_User = new Entity_t_Sys_User();
            Entity_t_Sys_Menu_Authority t_Sys_Menu_Authority = new Entity_t_Sys_Menu_Authority();

            DataTable dtUser = t_Sys_User.GetData("[Name]='" + UserName + "'").Tables[0];
            if (dtUser.Rows.Count == 0) throw new Exception(UserName + " 在系统中不存在");

            string UserID = dtUser.Rows[0]["ID"].ToString();

            return t_Sys_Menu_Authority.GetData("[UserID]=" + UserID).Tables[0];
            
        }

    }
}