using System;
using System.Data;
using System.Data.OleDb;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Linq;
using System.Data.Entity.Infrastructure;

public partial class admin_project_kind_reg : MyWeb.config
{
    DataTable treeDt = new DataTable();
    const int LevelMax = Model.project.KindLevelMax;  //分類層數
    private Model.ezEntities _db = new Model.ezEntities();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack) {
       
            BuildTreeView();

            if (!isStrNull(Request["num"]))
            {
                int _num = Val(Request["num"]);
                var prod = _db.project_kind.AsEnumerable().Where(q => q.num == _num).OrderBy(q => q.kind).FirstOrDefault();

                if (prod != null)
                {
                    title_msg.Text = "修改<span class=\"text-primary\">【" + prod.kind + "】</span>的分類名稱";
                    item_name.Text = prod.kind;
                    demo.Text = prod.demo;
                    HiddenField1.Value = prod.kind;
                }
                else
                {
                    Response.Redirect(Request.Url.AbsolutePath );

                }                

                edit.Visible = true;
                add.Visible = false;
                down_table.Visible = true;
                start.Visible = false;
            }
            else
            {
                table.Visible = false;
                down_table.Visible = false;
                if (Convert.ToString(Request["msg"]) == "A") { start.Text = "【資料修改成功】"; }
                else if (Convert.ToString(Request["msg"]) == "B") { start.Text = "【資料新增成功】"; }
                else if (Convert.ToString(Request["msg"]) == "C") { start.Text = "【資料刪除成功】"; }
                else { start.Text = "【請點選下方欲新增、修改或刪除的分類】"; }
            }

        }
    }

    #region 建立分類

  
    protected void TreeTopology()
    {
        MyWeb.sql sql = new MyWeb.sql();
        OleDbConnection sqlConn = sql.conn(db, p_name);
        try
        {
            sqlConn.Open();
            OleDbCommand sqlCmd = new OleDbCommand("", sqlConn);
            sqlCmd.CommandText = "SELECT num,kind,root FROM project_kind  ORDER BY kind,root, range";        
            treeDt = sql.dataTable(sqlCmd);
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
        finally
        {
            sqlConn.Close();
            sqlConn.Dispose();
        }
    }

    public void BuildTreeView()
    {
        TreeView2.Nodes.Clear();
        TreeTopology();
        BuildChild(0, TreeView2.Nodes);
        treeDt.Dispose();
    }

    public void BuildChild(int RootUid, TreeNodeCollection Nodes, int Level=1)
    {
        DataTable dt = treeDt;
        foreach (DataRow row in dt.Rows)
        {
            if (row["root"].ToString() == RootUid.ToString())
            {
                TreeNode NewNode = new TreeNode();
                if (Convert.ToString(Request["num"]) == row["num"].ToString() & HiddenField1.Value != "AddMainItem")
                {
                    NewNode.Text = "<b><span style=\"color:blue\">" + row["kind"].ToString() + "</span></b>";
                    if (Level +1 > LevelMax)
                    {
                        ImageButton5.Visible = false;
                    }
                }
                else
                {
                    NewNode.Text = row["kind"].ToString();
                }
                NewNode.NavigateUrl = Request.Url.AbsolutePath + "?num=" + row["num"].ToString() ;
                NewNode.Expand();
                Nodes.Add(NewNode);
                if (Level + 1 <= LevelMax)
                {
                    BuildChild((int)row["num"], NewNode.ChildNodes, Level + 1);
                }
                    
            }        
        }
    }

    #endregion

    #region 新增分類按鈕事件

    protected void ImageButton5_Click(object sender, EventArgs e)
    {
         title_msg.Text = "於<span class=\"text-primary\">【" + HiddenField1.Value + "】</span>分類下，新增次分類";
        item_name.Text = "";
        demo.Text = "";
        add.Visible = true;
        edit.Visible = false;
        down_table.Visible = false;
        start.Visible = false;

    }
    protected void ImageButton4_Click(object sender, EventArgs e)
    {
        title_msg.Text = "<span class=\"text-primary\">於根目錄下，新增主分類</span>";
        table.Visible = true;
        item_name.Text = "";
        demo.Text = "";
        add.Visible = true;
        edit.Visible = false;
        down_table.Visible = false;
        start.Visible = false;
        HiddenField1.Value = "AddMainItem";
        BuildTreeView();
    }

    #endregion

    #region 資料修改

    protected void edit_Click(object sender, EventArgs e)
    {
        L_msg.Text = "";

        int _num = Val(Request["num"]);
        try
        {
            Model.project_kind project_kind = _db.project_kind.Where(q => q.num == _num).FirstOrDefault();//修改
            if (project_kind != null)
            {
                project_kind.kind = item_name.Text;
                project_kind.demo = demo.Text;

                _db.SaveChanges();

                Model.admin_log admin_log = new Model.admin_log();
                admin_log.writeLog(admin.info.u_id, (int)Model.admin_log.Systems.Project, (int)Model.admin_log.Status.Update, "分類：" + item_name.Text);

                L_msg.Type = alert_type.success;
                L_msg.Text = "操作成功";
            }
            else
            {
                L_msg.Type = alert_type.danger;
                L_msg.Text = "無此資料";
            }

        }
        catch (DbUpdateConcurrencyException)
        {
            L_msg.Type = alert_type.danger;
            L_msg.Text = "Error";
            throw;
        }
       
        
        BuildTreeView();
      

    }

    #endregion

    #region 資料新增

    protected void add_Click(object sender, EventArgs e)
    {
        L_msg.Text = "";
        int range = 1;
        int root = 0;

        if (HiddenField1.Value != "AddMainItem")
        {
            root = Convert.ToInt32(Request["num"]);
        }

        try
        {
            var prod = _db.project_kind.AsEnumerable().Where(q => q.root == root).OrderByDescending(q => q.range).FirstOrDefault();
            if (prod != null)
                if (prod.range.HasValue)
                    range = prod.range.Value + 1;

            Model.project_kind project_kind = new Model.project_kind();//新增
            project_kind.kind = item_name.Text;
            project_kind.root = root;
            project_kind.range = range;
            project_kind.demo = demo.Text;
            _db.project_kind.Add(project_kind);
            _db.SaveChanges();

            Model.admin_log admin_log = new Model.admin_log();
            admin_log.writeLog(admin.info.u_id, (int)Model.admin_log.Systems.Project, (int)Model.admin_log.Status.Insert, "分類：" + item_name.Text);

            L_msg.Type = alert_type.success;
            L_msg.Text = "操作成功";
        }
        catch (DbUpdateConcurrencyException)
        {
            throw;
        }
    

        BuildTreeView();
      
    }

    #endregion

    #region 資料刪除

    protected void ImageButton6_Click(object sender, EventArgs e)
    {        
        int num = Val(Request["num"]);
        del_product(num);

        var prod = _db.project_kind.AsEnumerable().Where(q => q.num == num).FirstOrDefault(); //刪除該筆資料
        if (prod != null)
        {
            _db.project_kind.Remove(prod);
            _db.SaveChanges(); //執行
        }

      
        Del_Ohter_Items(Val(Request["num"]));
        Model.admin_log admin_log = new Model.admin_log();
        admin_log.writeLog(admin.info.u_id, (int)Model.admin_log.Systems.Project, (int)Model.admin_log.Status.Delete, "分類：" + item_name.Text);

        Response.Redirect(Request.Url.AbsolutePath + "?msg=C");
    }

    public void Del_Ohter_Items(int d_num)
    {
        var prod = _db.project_kind.AsEnumerable().Where(q => q.root == d_num).ToList();
        if (prod.Count > 0)
        {
            foreach (var row in prod)
            {
                del_product(row.num);
                Del_Ohter_Items(row.num);
            }

            //查詢結果全部刪除
            _db.project_kind.RemoveRange(prod);
            _db.SaveChanges();
        }

    }

    public void del_product(int num)
    {      
        var prod = _db.projects.AsEnumerable().Where(q => q.kind == num).ToList();
        if (prod.Count > 0)
        {
            ////查詢結果全部刪除
            //_db.projects.RemoveRange(prod);
            //_db.SaveChanges();

            //清空分類
            foreach (var item in prod)
                item.kind = null;
            _db.SaveChanges();
        }
    }

    #endregion

   
}