using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;

namespace FCOMMON
{
    public static partial class DBM
    {
        public static SqlConnection getCn()
        {
            string cs = FCOMMON.info.CS;
            SqlConnection cn = new SqlConnection();
            cn.ConnectionString = cs;
            return cn;
        }

        public struct sItemInfo
        {
            public int idx;
            public string sid;
            public string model;
            public string supply;
            public string name;
            public string unit;
            public float scale;
            public string price;
            public int supplyidx;
            public string project;
            public int qty;
        }

        public static Boolean setImageData(System.Drawing.Image img, string table, string field, int idx)
        {
            var cn = getCn();
            cn.Open();

            Boolean retval = false;
            string sql = "update  " + table + " set " + field + " = @data" + " where idx = @idx";
            var cmd = new SqlCommand(sql, cn);

            System.IO.MemoryStream sm = new System.IO.MemoryStream();
            img.Save(sm, System.Drawing.Imaging.ImageFormat.Jpeg);
            var buffer = sm.GetBuffer();
            sm.Dispose();

            cmd.Parameters.Add(new SqlParameter("idx", idx));
            cmd.Parameters.Add(new SqlParameter("data", buffer));
            try
            {
                cmd.ExecuteNonQuery();
                retval = true;
            }catch (Exception ex)
            {

            }
            

            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static  System.Drawing.Image GetImageData(string table,string field,int idx)
        {
            var cn = getCn();
            cn.Open();

          
            string sql = "select " + field + " from "+table+" where idx = " + idx.ToString();
            var cmd = new SqlCommand(sql, cn);
            var data = cmd.ExecuteScalar() as byte[];
            System.Drawing.Bitmap bmp = null;
            if(data != null)
            {
                System.IO.MemoryStream ms = new System.IO.MemoryStream(data);
                bmp = new System.Drawing.Bitmap(ms, true);
                ms.Dispose();
            }
            
            cn.Close();
            cn.Dispose();
            return bmp;
        }

        public static sItemInfo getLastPurchaseInfo(int idx)
        {
            var cn = getCn();
            cn.Open();

            var retval = new sItemInfo();
            retval.idx = -1;

            string sql = "select isnull(max(idx),-1) from Purchase where pumidx = " + idx.ToString();
            var cmd = new SqlCommand(sql, cn);
            int maxidx = int.Parse(cmd.ExecuteScalar().ToString());
            if (maxidx == -1) return retval;

            cmd.CommandText = "select * from Purchase where idx = " + maxidx.ToString();
            var rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                retval.idx = (int)rdr["idx"];
                if (rdr["sid"] != DBNull.Value) retval.sid = rdr["sid"].ToString();
                if (rdr["pumscale"] != DBNull.Value) retval.model = rdr["pumscale"].ToString();
                if (rdr["supply"] != DBNull.Value) retval.supply = rdr["supply"].ToString();
                if (rdr["supplyidx"] != DBNull.Value) retval.supplyidx = int.Parse(rdr["supplyidx"].ToString());
                else retval.supplyidx = -1;

                if (rdr["pumname"] != DBNull.Value) retval.name = rdr["pumname"].ToString();
                if (rdr["pumunit"] != DBNull.Value) retval.unit = rdr["pumunit"].ToString();
                if (rdr["project"] != DBNull.Value) retval.project = rdr["project"].ToString();

                if (rdr["pumprice"] != DBNull.Value) retval.price = rdr["pumprice"].ToString();
                else retval.price = "0";

                if (rdr["pumqty"] != DBNull.Value) retval.qty = int.Parse(rdr["pumqty"].ToString());
                else retval.qty = 0;

            }

            cn.Close();
            cn.Dispose();
            return retval;
        }

      
        public static sItemInfo getItemInfo(int idx)
        {
            var cn = getCn();
            cn.Open();

            var retval = new sItemInfo();
            retval.idx = -1;

            string sql = "select * from Items where idx = " + idx.ToString();
            var cmd = new SqlCommand(sql, cn);
            var rdr = cmd.ExecuteReader();
            while(rdr.Read())
            {
                retval.idx = (int)rdr["idx"];
                if(rdr["sid"] != DBNull.Value) retval.sid = rdr["sid"].ToString();
                if (rdr["model"] != DBNull.Value) retval.model = rdr["model"].ToString();
                if (rdr["supply"] != DBNull.Value) retval.supply = rdr["supply"].ToString();
                if (rdr["supplyidx"] != DBNull.Value) retval.supplyidx = int.Parse(rdr["supplyidx"].ToString());

                if (rdr["name"] != DBNull.Value) retval.name = rdr["name"].ToString();
                if (rdr["unit"] != DBNull.Value) retval.unit = rdr["unit"].ToString();
                if (rdr["scale"] != DBNull.Value) retval.scale = float.Parse(rdr["scale"].ToString());
                if (rdr["price"] != DBNull.Value) retval.price = rdr["price"].ToString();

            }

            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static int addItemInfo(sItemInfo info)
        {
            int retval = -1;
            var cn = getCn();
            cn.Open();

            string sql = "insert into Items" +
                " ([cate],[sid],[model],[supply],[supplyidx],[name],[unit],[scale],[price],[wuid],[wdate])" +
                " values " +
                " (@cate,@sid,@model,@supply,@supplyidx,@name,@unit,@scale,@price,@wuid,@wdate)";

            var cmd = new SqlCommand(sql, cn);
            cmd.Parameters.Add(new SqlParameter("@cate", "etc"));
            cmd.Parameters.Add(new SqlParameter("@sid", info.sid));
            cmd.Parameters.Add(new SqlParameter("@model", info.model));
            cmd.Parameters.Add(new SqlParameter("@supply", info.supply));
            cmd.Parameters.Add(new SqlParameter("@supplyidx",  info.supplyidx));
            cmd.Parameters.Add(new SqlParameter("@name", info.name));
            cmd.Parameters.Add(new SqlParameter("@unit", info.unit));
            cmd.Parameters.Add(new SqlParameter("@scale", info.scale));
            cmd.Parameters.Add(new SqlParameter("@price", info.price));
            cmd.Parameters.Add(new SqlParameter("@wuid",  FCOMMON.info.Login.no));
            cmd.Parameters.Add(new SqlParameter("@wdate", DateTime.Now));

            var iCnt = cmd.ExecuteNonQuery();
            if(iCnt == 1)
            {
                cmd.CommandText = "select isnull(idx,-1) from Items where [sid] = @sid";
                cmd.Parameters.Clear();
                cmd.Parameters.Add(new SqlParameter("sid", info.sid));
                retval = (int)cmd.ExecuteScalar();
            }
            
            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static sItemInfo getItemInfo(string sid)
        {
            var cn = getCn();
            cn.Open();

            var retval = new sItemInfo();
            retval.idx = -1;

            string sql = "select * from Items where [sid] = '" + sid + "'";
            var cmd = new SqlCommand(sql, cn);
            var rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                retval.idx = (int)rdr["idx"];
                if (rdr["sid"] != DBNull.Value) retval.sid = rdr["sid"].ToString();
                if (rdr["model"] != DBNull.Value) retval.model = rdr["model"].ToString();
                if (rdr["supply"] != DBNull.Value) retval.supply = rdr["supply"].ToString();
                if (rdr["supplyidx"] != DBNull.Value) retval.supplyidx = int.Parse(rdr["supplyidx"].ToString());

                if (rdr["name"] != DBNull.Value) retval.name = rdr["name"].ToString();
                if (rdr["unit"] != DBNull.Value) retval.unit = rdr["unit"].ToString();
                if (rdr["scale"] != DBNull.Value) retval.scale = float.Parse(rdr["scale"].ToString());
                if (rdr["price"] != DBNull.Value) retval.price = rdr["price"].ToString();
            }

            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static Dictionary<string,string> getUserList(int baseLevel  = 1)
        {
            string where = "isnull(level,0) >= " + baseLevel.ToString();
            return getTwoColumnList("Users", "id", "name", where, "name");

        }
        public static System.Data.DataTable getUserTable(int baseLevel = 1)
        {
            var list = getUserList(baseLevel);
            return MakeDataTable(list);
        }

        private static Dictionary<string,string> MakeDataTable(List<string> list)
        {
            var retval = new Dictionary<string, string>();
            foreach (var item in list)
                retval.Add(item, item);
            return retval;
        }
        private static System.Data.DataTable MakeDataTable(Dictionary<string,string> list)
        {
            System.Data.DataTable dt = new System.Data.DataTable();
            dt.Columns.Add("Key");
            dt.Columns.Add("Value");
            dt.Columns.Add("KeyValue");

            foreach (var item in list)
            {
                dt.Rows.Add(new string[] { item.Key, item.Value, string.Format("[{0}] {1}", item.Key, item.Value) });
            }
            dt.AcceptChanges();
            return dt;
        }

        public static Dictionary<string, string> getProjectList(string StateCode = "")
        {
            string where = "status = '{0}'";
            if (StateCode != "") where = string.Format(where, StateCode);
            else where = string.Empty;

            return getTwoColumnList("Projects", "idx", "name", where, "status,name");
        }
        public static System.Data.DataTable getProjectData(string StateCode = "")
        {
            var list = getProjectList(StateCode);
            return MakeDataTable(list);
        }
      public static Dictionary<string,string> getCodeList(string GroupCode="99")
        {
            string where = "Grp = '{0}'";
            where = string.Format(where, GroupCode);
            return getTwoColumnList("Common", "code", "memo", where, "code");
        }
      public static  string getCodeSavlue(string GroupCode, string code)
      {
          var cn = getCn();
          cn.Open();
          var sql = "select isnull(SValue,'')" +
                    " from Common" +
                    " where Grp = '{0}' and code = '{1}'";

          sql = string.Format(sql, GroupCode, code);
          var cmd = new SqlCommand(sql, cn);
          var data = cmd.ExecuteScalar();
          cmd.Dispose();
          cn.Close();
          cn.Dispose();
          return data.ToString();

      }
      public static System.Data.DataTable getCodeTable(string GroupCode = "99")
      {
          var list = getCodeList(GroupCode);
          return MakeDataTable(list);
      }
        private static Dictionary<string, string> getTwoColumnList(string table,string col1,string col2,string where="",string order="")
        {
            Dictionary<string, string> retval = new Dictionary<string, string>();
            var cn = getCn();
            cn.Open();
            var sql = "select isnull({1},''),isnull({2},'')" +
                " from {0}";
            if (where != "") sql += " where " +  where;
            if (order != "") sql += " order by " + order;
            sql = string.Format(sql,table, col1, col2);
            var cmd = new SqlCommand(sql, cn);
            var rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                retval.Add(rdr[0].ToString(), rdr[1].ToString());
            }
            rdr.Close();
            cmd.Dispose();
            cn.Close();
            cn.Dispose();
            return retval;

        }
        public static Dictionary<string,string> getGroupTable(string GroupColumn, string table, string where = "", Boolean desc = false)
        {
            var list = getGroupList(GroupColumn, table, where, desc);
            return MakeDataTable(list);
        }
        
        /// <summary>
        /// 데이터중 첫번째 자료를 반환 합니다.
        /// </summary>
        /// <param name="column"></param>
        /// <param name="table"></param>
        /// <param name="where"></param>
        /// <param name="order"></param>
        /// <returns></returns>
        public static String  getFirstValue(string column,string table,string where="",string order="")
        {
            string retval = string.Empty;
            var cn = getCn();
            cn.Open();
            var sql = "select {0} " +
                " from {1} " +
                " where isnull({0},'') != '' ";

            if (where != "") sql += " and " + where;
            if (order != "") sql += " order by " + order;

            sql = string.Format(sql, "[" + column + "]", table);
            var cmd = new SqlCommand(sql, cn);
            var rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                if (rdr[0] != null) retval = rdr[0].ToString();
            }
            cmd.Dispose();
            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static List<String> getGroupList(string GroupColumn, string table, string where = "",Boolean desc=false)
        {
            List<string> retval = new List<string>();
            var cn = getCn();
            cn.Open();
            var sql = "select {0} " +
                " from {1} " +
                " where isnull({0},'') != '' ";

            if (where != "") sql += " and " + where;

            sql += " group by {0} " +
                   " order by {0} ";
            if (desc) sql += " desc";

            sql = string.Format(sql, "[" + GroupColumn + "]", table);
            var cmd = new SqlCommand(sql, cn);
            var rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                retval.Add(rdr[0].ToString());
            }
            cmd.Dispose();
            cn.Close();
            cn.Dispose();
            return retval;
        }
        public static List<String> getDateList(string table, string where = "",Boolean desc =false)
        {
            return getGroupList("pdate", table, where,desc);
        }
    }
}