using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Collections;

namespace ServerExplorer.UI
{
    public partial class FrmProcedimientos : Form
    {
        #region Declarations

        private string cnxString;
        private SqlConnection cnx;

        #endregion

        #region Form life cycle

        public FrmProcedimientos(string cnxString)
        {
            InitializeComponent();

            this.cnxString = cnxString;
            cnx = new SqlConnection(cnxString);
        }

        private void frmProcedimientos_Load(object sender, EventArgs e)
        {
            LoadProcedures();
        }

        #endregion

        #region Events

        private void lsvProcs_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (lsvProcs.SelectedItems.Count <= 0) { return; }

            string schema, name;
            name = lsvProcs.SelectedItems[0].SubItems[0].Text;
            schema = lsvProcs.SelectedItems[0].SubItems[1].Text;
            LoadProcedure(schema, name);
        }

        private void btnRefresh_Click(object sender, EventArgs e)
        {
            LoadProcedures();
        }

        #endregion

        #region Private methods

        private void LoadProcedures()
        {
            DataTable dt;
            SqlDataAdapter da;

            // Obtener un datatable con todos los procedimientos de la base de datos.
            da = new SqlDataAdapter(
                "SELECT ROUTINE_NAME Name, ROUTINE_SCHEMA [Schema], CREATED CreateDate, ROUTINE_TYPE [Type] FROM INFORMATION_SCHEMA.ROUTINES",
                cnx);
            dt = new DataTable();
            cnx.Open();
            da.Fill(dt);
            cnx.Close();

            // Mostrar todos los procedimientos
            lsvProcs.Items.Clear();
            foreach (DataRow dr in dt.Rows)
            {
                ListViewItem item = lsvProcs.Items.Add((String)dr["Name"]);
                item.SubItems.Add((string)dr["Schema"]);
                item.SubItems.Add(((DateTime)dr["CreateDate"]).ToShortDateString());
                item.SubItems.Add((string)dr["Type"]);
            }
        }

        private void LoadProcedure(string schema, string name)
        {
            DataTable dt;
            SqlDataAdapter da;
            da = new SqlDataAdapter("SELECT ROUTINE_DEFINITION from INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_NAME=@Name AND ROUTINE_SCHEMA=@Schema", cnx);
            da.SelectCommand.Parameters.AddWithValue("@Name", name);
            da.SelectCommand.Parameters.AddWithValue("@Schema", schema);
            dt = new DataTable();
            cnx.Open();
            da.Fill(dt);
            cnx.Close();

            // Mostrar el contenido del procedimiento
            txtProc.Text = String.Empty;
            foreach (DataRow dr in dt.Rows)
            {
                txtProc.Text += ((string)dr[0]).Replace("\r", "").Replace("\n", "\r\n");
            }
        }

        #endregion
    }
}