using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using WebLib;

namespace Education.Forms.組織
{
    public partial class 組織圖處理 : FormBase
    {
        private int 組織類別Id;

        protected void Page_Load(object sender, EventArgs e)
        {
            FunctionName = "組織圖處理";

            if (!IsPostBack)
                ddl組織類別.DataBind();
        }

        protected bool CheckInput()
        {
            if (txtNodeText.Text.Trim().Length == 0)
            {
                lbError.Text = "請輸入組織名稱";
                return false;
            }
            else
            {
                lbError.Text = "";
                return true;
            }
        }

        protected 組織圖 New組織圖Item(int 上層ID)
        {
            組織圖 result = new 組織圖();
            result.上層ID = 上層ID;
            result.組織類別ID = DAC.GetInt32(ddl組織類別.SelectedValue);
            result.組織名稱 = txtNodeText.Text;
            result.DB_CRUSR = UserId;
            result.部門主管 = ddl主管.SelectedValue;
            result.組織ID = Dao組織圖.InsertOne(result);

            return result;
        }

        protected void btnAddRoot_Click(object sender, EventArgs e)
        {
            if (!CheckInput())
                return;

            組織圖 newItem = New組織圖Item(0);
            TreeNode newNode = new TreeNode(txtNodeText.Text);
            newNode.Value = newItem.組織ID.ToString();

            TV.Nodes.Add(newNode);
            newNode.Selected = true;
        }

        protected void btnAdd_Click(object sender, EventArgs e)
        {
            if (!CheckInput())
                return;

            if (TV.SelectedNode == null || TV.SelectedNode.Parent == null)
                btnAddRoot_Click(sender, e);
            else
            {
                組織圖 newItem = New組織圖Item(DAC.GetInt32(TV.SelectedNode.Parent.Value));
                TreeNode newNode = new TreeNode(txtNodeText.Text);
                newNode.Value = newItem.組織ID.ToString();

                TV.SelectedNode.Parent.ChildNodes.Add(newNode);
                newNode.Selected = true;
            }
        }

        protected void btnAddDown_Click(object sender, EventArgs e)
        {
            if (!CheckInput())
                return;

            if (TV.SelectedNode == null)
                btnAddRoot_Click(sender, e);
            else
            {
                組織圖 newItem = New組織圖Item(DAC.GetInt32(TV.SelectedNode.Value));
                TreeNode newNode = new TreeNode(txtNodeText.Text);
                newNode.Value = newItem.組織ID.ToString();

                TV.SelectedNode.ChildNodes.Add(newNode);
                TV.SelectedNode.Expand();
                newNode.Selected = true;
            }
        }

        protected void btnUpdate_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            TV.SelectedNode.Text = txtNodeText.Text;

            組織圖List values = Dao組織圖.SelectOne(DAC.GetInt32(TV.SelectedNode.Value));
            if (values.Count == 0)
                return;
            values[0].組織名稱 = txtNodeText.Text;
            values[0].部門主管 = ddl主管.SelectedValue;
            values[0].DB_TRUSR = UserId;
            Dao組織圖.UpdateOne(values[0]);
        }

        protected void btnDelete_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            if (TV.SelectedNode.ChildNodes.Count > 0)
                return;

            int delId = DAC.GetInt32(TV.SelectedNode.Value);
            組織圖List values = Dao組織圖.SelectOne(DAC.GetInt32(TV.SelectedNode.Value));
            if (values.Count == 0)
                return;
            Dao組織圖.DeleteOne(values[0]);

            if (TV.SelectedNode.Parent == null)
            {
                TV.Nodes.Remove(TV.SelectedNode);
            }
            else
            {
                TV.SelectedNode.Parent.ChildNodes.Remove(TV.SelectedNode);
            }
        }

        protected void Update排序(TreeNodeCollection nodes)
        {
            for (int i = 0; i < nodes.Count; i++)
            {
                Dao組織圖.Update排序(DAC.GetInt32(nodes[i].Value), i + 1, UserId);
            }
        }

        protected void btnUp_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            if (TV.SelectedNode.Parent == null)
            {
                TreeNode node = TV.SelectedNode;
                int thisIndex = TV.Nodes.IndexOf(node);

                if (thisIndex == 0)
                    return;

                TV.Nodes.Remove(node);
                TV.Nodes.AddAt(thisIndex - 1, node);
                node.Selected = true;

                Update排序(TV.Nodes);
            }
            else
            {
                TreeNode node = TV.SelectedNode;
                TreeNode parent = node.Parent;
                int thisIndex = parent.ChildNodes.IndexOf(node);

                if (thisIndex == 0)
                    return;

                parent.ChildNodes.Remove(node);
                parent.ChildNodes.AddAt(thisIndex - 1, node);
                node.Selected = true;

                Update排序(parent.ChildNodes);
            }
        }

        protected void btnDown_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            if (TV.SelectedNode.Parent == null)
            {
                TreeNode node = TV.SelectedNode;
                int thisIndex = TV.Nodes.IndexOf(node);

                if (thisIndex == TV.Nodes.Count - 1)
                    return;

                TV.Nodes.Remove(node);
                TV.Nodes.AddAt(thisIndex + 1, node);
                node.Selected = true;

                Update排序(TV.Nodes);
            }
            else
            {
                TreeNode node = TV.SelectedNode;
                TreeNode parent = node.Parent;
                int thisIndex = parent.ChildNodes.IndexOf(node);

                if (thisIndex == parent.ChildNodes.Count - 1)
                    return;

                parent.ChildNodes.Remove(node);
                parent.ChildNodes.AddAt(thisIndex + 1, node);
                node.Selected = true;

                Update排序(parent.ChildNodes);
            }
        }

        protected void btnUpLevel_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            if (TV.SelectedNode.Parent == null)
                return;

            TreeNode node = TV.SelectedNode;
            TreeNode parent = node.Parent;
            TreeNode parentParent = node.Parent.Parent;

            if (parentParent == null)
            {
                parent.ChildNodes.Remove(node);
                TV.Nodes.AddAt(TV.Nodes.IndexOf(parent) + 1, node);
                node.Selected = true;

                Dao組織圖.Update上層ID(DAC.GetInt32(node.Value), 0, UserId);
                Update排序(TV.Nodes);
            }
            else
            {
                parent.ChildNodes.Remove(node);
                parentParent.ChildNodes.AddAt(parentParent.ChildNodes.IndexOf(parent) + 1, node);
                node.Selected = true;

                Dao組織圖.Update上層ID(DAC.GetInt32(node.Value), DAC.GetInt32(parentParent.Value), UserId);
                Update排序(parentParent.ChildNodes);
            }
        }

        protected void btnDownLevel_Click(object sender, EventArgs e)
        {
            if (TV.SelectedNode == null)
                return;

            TreeNode node = TV.SelectedNode;
            TreeNode parent = node.Parent;

            if (parent == null)
            {
                int thisIndex = TV.Nodes.IndexOf(node);
                if (thisIndex == 0)
                    return;
                TV.Nodes.Remove(node);
                TV.Nodes[thisIndex - 1].ChildNodes.Add(node);
                TV.Nodes[thisIndex - 1].Expand();
                node.Selected = true;

                Dao組織圖.Update上層ID(DAC.GetInt32(node.Value), DAC.GetInt32(TV.Nodes[thisIndex - 1].Value), UserId);
                Update排序(TV.Nodes[thisIndex - 1].ChildNodes);
            }
            else
            {
                int thisIndex = parent.ChildNodes.IndexOf(node);
                if (thisIndex == 0)
                    return;
                parent.ChildNodes.Remove(node);
                parent.ChildNodes[thisIndex - 1].ChildNodes.Add(node);
                parent.ChildNodes[thisIndex - 1].Expand();
                node.Selected = true;

                Dao組織圖.Update上層ID(DAC.GetInt32(node.Value), DAC.GetInt32(parent.ChildNodes[thisIndex - 1].Value), UserId);
                Update排序(parent.ChildNodes[thisIndex - 1].ChildNodes);
            }
        }

        protected void btnSelect組織類別_Click(object sender, EventArgs e)
        {
            組織類別Id = DAC.GetInt32(ddl組織類別.SelectedValue);
            Dao組織圖.DrawTree(TV, 組織類別Id);
            pnl組織圖.Visible = true;
            TV.ExpandAll();

            if (TV.Nodes.Count > 0)
            {
                TV.Nodes[0].Select();
                TV_SelectedNodeChanged(sender, e);
            }
        }

        protected void TV_SelectedNodeChanged(object sender, EventArgs e)
        {
            ddl主管.DataBind();
            if (TV.SelectedNode == null)
            {
                txtNodeText.Text = "";
                return;
            }

            txtNodeText.Text = TV.SelectedNode.Text;
            // 20181023 檢查部門主管是否在部門人員中，若有才設定 dropdown 的值
            組織圖 dept = Dao組織圖.SelectOne(DAC.GetInt32(TV.SelectedNode.Value)).FirstOrDefault();
            if (dept != null && ddl主管.Items.FindByValue(dept.部門主管) != null)
                ddl主管.SelectedValue = dept.部門主管;
        }
    }
}