using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PTMedInsuInterface.Forms
{
    public partial class InterfaceChooser : Form
    {
       const int ITEM_WIDTH = 300;
       const int ITEM_HEIGTH = 80;
       const int ITEM_ROW_SPACE = 6;
       const int ITEM_COL_SPACE = 8;
       int CURRENT_PAGE = 1;
       int PAGE_SIZE;

       int ITEM_ROWS;
       int ITEM_COLS;

        DataTable dtInterface = new DataTable();
        DataTable dtOriginalInterface = new DataTable();

        public DataRow drSelectedInterface;
        public InterfaceChooser(JArray ja)
        {
            InitializeComponent();
            try
            {
            //需要将窗体的KeyPreview属性设置为true(如下图所示：),将系统传入的键值先传递给窗体，再传递给控件。MSDN关于KeyPreview的说明：如果窗体将接收所有键事件，则为 true；如果窗体上当前选定控件接收键事件，则为 false。默认为 false
            this.KeyPreview = true;
            ITEM_COLS = pnlClient.Width  /(ITEM_WIDTH + ITEM_COL_SPACE);
            ITEM_ROWS= pnlClient.Height /(ITEM_HEIGTH + ITEM_ROW_SPACE);
            PAGE_SIZE = ITEM_COLS * ITEM_ROWS;
            CreateItemButton();
            
            //窗体的大小固定
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            //默认可调整大小的边框模式
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Sizable;
            //固定的三维边框
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;
            //出现在屏幕正中央
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            //获取医保接口清单
            
                dtOriginalInterface = (DataTable)ja.ToObject(typeof(DataTable));
                dtInterface = dtOriginalInterface;
            }
            catch (Exception ex)
            {
                throw new Exception("InterfaceChooser构造出错：" + ex.Message);
            } 
        }


        private DataTable FilterInterfaceList()
        {
            string filterStr = tbLocate.Text;
            var dt1 = dtOriginalInterface.AsEnumerable()
              .Where(p => p.Field<string>("InterfaceName").Contains(filterStr));
            if (dt1.Count() > 0)
            {
                DataTable dt2 = dt1.CopyToDataTable<DataRow>();
                return dt2;
            }
            else
                return null;
            
        }
        /// <summary>
        /// 生成BUTTON
        /// </summary>
        private void CreateItemButton()
        {
            Sunny.UI.UIButton btn;
            for (int y = 1; y <=ITEM_ROWS; y++)
            {
                for (int x = 1; x <=ITEM_COLS; x++)
                {
                    btn = new Sunny.UI.UIButton();
                    btn.Parent = pnlClient;
                    btn.Visible = false;
                    btn.Name = "Item_" + ((y-1)*ITEM_COLS +x).ToString();
                    btn.Width = ITEM_WIDTH;
                    btn.Height = ITEM_HEIGTH;
                    btn.Left = ITEM_COL_SPACE * x + (x - 1) * btn.Width;
                    btn.Top = ITEM_ROW_SPACE * y + (y - 1) * btn.Height;
                    //btn.Location = new System.Drawing.Point(btn.Left, btn.Top);
                    btn.FillColor = Color.LightBlue;
                    btn.ForeColor = Color.Black;
                    //btn.BackColor = Color.LightBlue;
                    //btn.Font = new Font("宋体", 10);
                    //btn.Font = new Font("宋体", 10, FontStyle.Bold);
                    btn.Click += Btn_Click;
                    btn.Tag = (y - 1) * ITEM_COLS + x;
                    btn.Text = btn.Name;
                    btn.TextAlign = ContentAlignment.MiddleCenter;
                    btn.TabStop = true;
                    //pnlClient.Controls.Add(btn);  //跟parent作用差不多，但颜色会变本来的颜色，原因未知

                }
            }
        }

        /// <summary>
        /// 销毁BUTTON
        /// </summary>
        private void DestroyItemButton()
        {
            Sunny.UI.UIButton btn;
            for (int y = 1; y <= ITEM_ROWS; y++)
            {
                for (int x = 1; x <= ITEM_COLS; x++)
                {
                    
                    btn = (Sunny.UI.UIButton)pnlClient.Controls[0];
                    btn.Dispose();
                }
            }
        }

        private void clickButton(string buttonName)
        {
            Sunny.UI.UIButton btn;
            //btn = (Sunny.UI.UIButton)pnlClient.Controls["Item_3"];
            btn = (Sunny.UI.UIButton)pnlClient.Controls[buttonName];
            //Btn_Click(btn,null);
            btn.PerformClick();
        }
        /// <summary>
        /// 动态按钮事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Btn_Click(object sender, EventArgs e)
        {

            drSelectedInterface = (DataRow)((Sunny.UI.UIButton)sender).Tag;
            DialogResult = DialogResult.OK;
            Close();
        }

        private void uiButton1_Click(object sender, EventArgs e)
        {
            FreshButton();
        }

        /// <summary>
        /// 刷新界面
        /// </summary>
        private void FreshButton()
        {
            dtInterface = FilterInterfaceList();
            DestroyItemButton();
            CreateItemButton();
            initButton();
        }

        /// <summary>
        /// 根据输入的键值进行相应的操作
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            //if (e.Alt && e.Control && e.KeyCode == Keys.F2)
            //{
            //    MessageBox.Show("You press the Alt and Ctrl and F2 buttons!");
            //}
            //if (e.KeyData == Keys.Up)
            //{
            //    MessageBox.Show("You press the Up buttons!");
            //}
            //if (e.KeyValue == 27)
            //{
            //    MessageBox.Show("You press the Esc buttons!");
            //}

            
            if (e.KeyData == Keys.Home)
            {
                FreshButton();
            }

            if (e.KeyData == Keys.PageUp)
            {
                
                if (CURRENT_PAGE >1) CURRENT_PAGE--;
                FreshButton();
                
            }

            if (e.KeyData == Keys.PageDown)
            {

                int rows = dtInterface.Rows.Count;
                if (CURRENT_PAGE < (rows / PAGE_SIZE + 1)) CURRENT_PAGE++;
                FreshButton();
            }

            if (e.KeyData == Keys.Escape)
            {

                DialogResult = DialogResult.No;
                Close();
            }


            if (tbLocate.Focused)
            {
                return;
            }

            //大写的A...Z.因中文输入法的原因，无法识别小写，所以固定为大写
            if ((e.KeyValue > 64) && (e.KeyValue < 91))
            {
                //MessageBox.Show(e.KeyData.ToString());
                for (int i = 0; i < pnlClient.Controls.Count; i++)
                {
                    if (pnlClient.Controls[i].Visible == true)
                    {
                        Sunny.UI.UIButton btn;
                        btn = (Sunny.UI.UIButton)pnlClient.Controls[i];
                        DataRow dr = (DataRow)btn.Tag;
                        if (dr["InterfaceNO"].ToString() == e.KeyData.ToString())
                        {
                            Btn_Click(btn, null);
                        }

                    }
                }
            }

        }


        /// <summary>
        /// 
        /// 生成模拟数据
        /// </summary>
        /// <returns></returns>
        private DataTable CreateSimulatedData()
        {
            try
            {
                DataTable dt = new DataTable("interface");
                dt.Columns.Add("ID", Type.GetType("System.Int32"));        //第1列
                dt.Columns[0].AutoIncrement = true;       //自动增加
                dt.Columns[0].AutoIncrementSeed = 1;      //起始为1
                dt.Columns[0].AutoIncrementStep = 1;      //步长为1
                dt.Columns.Add("InterfaceNO", Type.GetType("System.String"));     //第2列
                dt.Columns.Add("InterfaceName", Type.GetType("System.String"));     //第3列
                dt.Columns.Add("CenterURL", Type.GetType("System.String"));    //第4列
                dt.Columns.Add("DLLName", Type.GetType("System.String"));    //第4列

                dt.Rows.Add(new object[] { null, "A", "哈尔滨基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/" , "GuangZhouMI.dll" });        // 第1行
                dt.Rows.Add(new object[] { null, "B", "广州基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第2行
                dt.Rows.Add(new object[] { null, "C", "成都基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第3行
                dt.Rows.Add(new object[] { null, "D", "合肥基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第4行
                dt.Rows.Add(new object[] { null, "E", "云南基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });       // 第5行
                dt.Rows.Add(new object[] { null, "F", "郑州基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第6行
                dt.Rows.Add(new object[] { null, "G", "南宁基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第7行
                dt.Rows.Add(new object[] { null, "H", "北京基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第8行
                dt.Rows.Add(new object[] { null, "I", "天津基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });        // 第9行
                dt.Rows.Add(new object[] { null, "J", "长春基线版医保", @"http://19.15.78.136:20001/ebus/gdyb_inf/poc/hsa/hgs/", "GuangZhouMI.dll" });       // 第10行

                return dt;
            }
            catch (Exception )
            {
                return null;
            }
        }

        /// <summary>
        /// 初始化BUTTON
        /// </summary>
        private void initButton()
        {

            if (dtInterface == null) return;
            if (dtInterface.Rows.Count == 0) return;

            for(int i = 0;i<dtInterface.Rows.Count;i++)
            {
                Sunny.UI.UIButton btn;
                if (i < ((CURRENT_PAGE - 1) * PAGE_SIZE )) continue;
                string buttonName = "Item_" + ((i % PAGE_SIZE)+ 1 ).ToString();
                btn = (Sunny.UI.UIButton)pnlClient.Controls[buttonName];
                btn.FillColor = Color.LightBlue;
                btn.ForeColor = Color.Black;
                btn.Visible = true;
                btn.Text = dtInterface.Rows[i]["InterfaceName"].ToString()  + "\n\r" + "【快捷键" + dtInterface.Rows[i]["InterfaceNO"].ToString() + "】";
                btn.Tag = dtInterface.Rows[i];
                //if (i == ((CURRENT_PAGE - 1) * PAGE_SIZE))
                //{
                //    btn.Focus();
                //    btn.Selected = true;

                //}
                if (i >= (CURRENT_PAGE * ITEM_ROWS * ITEM_COLS - 1)) return;

            }
        }

        private void tbLocate_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == System.Convert.ToChar(13))
            {
                
                FreshButton();
            }
        }

        private void btPrior_Click(object sender, EventArgs e)
        {
            if (CURRENT_PAGE > 1) CURRENT_PAGE--;
            FreshButton();
        }

        private void btNext_Click(object sender, EventArgs e)
        {
            int rows = dtInterface.Rows.Count;
            if (CURRENT_PAGE < (rows / PAGE_SIZE + 1)) CURRENT_PAGE++;
            FreshButton();
        }

        /// <summary>
        /// 这个重载函数里可以预先捕捉到一些按键，比如被系统默认捕获了的Tab键
        /// 如果要改写Tab键的默认动作，要返回true，表示你已经处理过这个按键了
        /// </summary>
        /// <param name="msg"></param>
        /// <param name="keyData"></param>
        /// <returns></returns>
        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            Control ctl = this.ActiveControl;
            if (keyData == Keys.Tab)
            {
                if (ctl.Name == "pnlClient")
                {
                    foreach (Control c in ctl.Controls)//遍历控件
                    {
                        ((Sunny.UI.UIButton)c).Selected = false;
                        if (c.Focused)//判断是否有焦点
                        {
                            ((Sunny.UI.UIButton)c).Selected = true;
                        }
                    }
                }
            }
            bool ret = base.ProcessCmdKey(ref msg, keyData);
            return ret;
        }

        private void InterfaceChooser_Load(object sender, EventArgs e)
        {

            FreshButton();
        }
    }
}