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

namespace Adaptation.Si
{

    public class SQLDatabase
    {

        private static string _ConnectionStringIrmnSpc;
        private static string _ConnectionStringG4Wafers;

        public static void SetConnectionStringIrmnSpc(string connectionString)
        {
            _ConnectionStringIrmnSpc = connectionString;
        }

        public static void SetConnectionStringG4Wafers(string connectionString)
        {
            _ConnectionStringG4Wafers = connectionString;
        }

        public static Dictionary<string, List<object>> ExecuteReader(StringBuilder rawSql, List<Tuple<string, string>> parameters, List<Tuple<string, int>> columns, bool isG4Wafers, bool isIrmnSpc)
        {
            Dictionary<string, List<object>> results = new Dictionary<string, List<object>>();
            foreach (var item in parameters)
                rawSql.Replace(item.Item1, item.Item2);
            string sql = rawSql.ToString();
            if (sql.Contains("@"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains("<"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains(">"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains("!"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            foreach (var item in columns)
                results.Add(item.Item1, new List<object>());
            string connectionString;
            if (isG4Wafers && isIrmnSpc)
                throw new Exception();
            else if (isG4Wafers)
                connectionString = _ConnectionStringG4Wafers;
            else if (isIrmnSpc)
                connectionString = _ConnectionStringIrmnSpc;
            else
                throw new Exception();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlCommand sqlComm = new SqlCommand(sql.ToString(), conn))
                {
                    using (SqlDataReader sqlReader = sqlComm.ExecuteReader())
                    {
                        while (sqlReader.Read())
                        {
                            foreach (var item in columns)
                                results[item.Item1].Add(sqlReader.GetSqlValue(item.Item2));
                        }
                    }
                }
            }
            return results;
        }

        public static Dictionary<int, List<object>> ExecuteReader(StringBuilder rawSql, List<Tuple<string, string>> parameters, int columns, bool isG4Wafers, bool isIrmnSpc)
        {
            Dictionary<int, List<object>> results = new Dictionary<int, List<object>>();
            foreach (var item in parameters)
                rawSql.Replace(item.Item1, item.Item2);
            string sql = rawSql.ToString();
            if (sql.Contains("@"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains("{"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains("}"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            if (sql.Contains("!"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            string connectionString;
            if (isG4Wafers && isIrmnSpc)
                throw new Exception();
            else if (isG4Wafers)
                connectionString = _ConnectionStringG4Wafers;
            else if (isIrmnSpc)
                connectionString = _ConnectionStringIrmnSpc;
            else
                throw new Exception();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlCommand sqlComm = new SqlCommand(sql.ToString(), conn))
                {
                    using (SqlDataReader sqlReader = sqlComm.ExecuteReader())
                    {
                        while (sqlReader.Read())
                        {
                            for (int i = 0; i < columns; i++)
                            {
                                if (!results.ContainsKey(i))
                                    results.Add(i, new List<object>());
                                results[i].Add(sqlReader.GetSqlValue(i));
                            }
                        }
                    }
                }
            }
            return results;
        }

        private static int? CheckDisableHistory(string sid)
        {
            int? result = null;
            if (sid != "1")
            {
                object exits;
                StringBuilder sql = new StringBuilder();
                sql.Append("SELECT ");
                sql.Append("hs.SID [SID] ");
                sql.Append("FROM [IRMNSPC].[dbo].[HIST_DISABLE] hs ");
                sql.Append("WHERE hs.SID = '").Append(sid).Append("' ");
                using (SqlConnection conn = new SqlConnection(_ConnectionStringIrmnSpc))
                {
                    conn.Open();
                    using (SqlCommand sqlComm = new SqlCommand(sql.ToString(), conn))
                        exits = sqlComm.ExecuteScalar();
                }
                if (exits is null)
                {
                    sql.Clear();
                    sql.Append("INSERT INTO HIST_DISABLE VALUES ('").Append(sid).Append("' , 0) ");
                    using (SqlConnection conn = new SqlConnection(_ConnectionStringIrmnSpc))
                    {
                        conn.Open();
                        using (SqlCommand sqlComm = new SqlCommand(sql.ToString(), conn))
                            result = sqlComm.ExecuteNonQuery();
                    }
                }
            }
            return result;
        }

        public static object ExecuteScalar(string sql, bool isMappedPart, double totalSecondsSinceLastWriteTime, Tuple<string, string> replace, bool selectForSID, bool isG4Wafers, bool isIrmnSpc)
        {
            object result;
            if (sql.Contains("@"))
                throw new Exception("Invalid query (a parameter didn't get populated)!");
            List<object> results = new List<object>();
            for (int i = 1; i < 15; i++)
            {
                string connectionString;
                if (isG4Wafers && isIrmnSpc)
                    throw new Exception();
                else if (isG4Wafers)
                    connectionString = _ConnectionStringG4Wafers;
                else if (isIrmnSpc)
                    connectionString = _ConnectionStringIrmnSpc;
                else
                    throw new Exception();
                using (SqlConnection conn = new SqlConnection(connectionString))
                {
                    conn.Open();
                    using (SqlCommand sqlComm = new SqlCommand(sql, conn))
                    {
                        using (SqlDataReader sqlReader = sqlComm.ExecuteReader())
                        {
                            while (sqlReader.Read())
                                results.Add(sqlReader.GetSqlValue(0));
                        }
                    }
                }
                if (results.Any())
                    break;
                if ((i > 10 && !(replace is null)) || (!isMappedPart && totalSecondsSinceLastWriteTime > 1800) || totalSecondsSinceLastWriteTime > 432000 && sql.Contains(replace.Item1)) //30 minutes and 5 days
                {
                    sql = sql.Replace(replace.Item1, replace.Item2);
                    continue;
                }
                if (!isMappedPart)
                    break;
                for (int j = 1; j < 60; j++)
                    Thread.Sleep(500);
            }
            if (!isMappedPart && !results.Any())
                result = "-";
            else if (isMappedPart && !results.Any())
                throw new Exception("Didn't find a matching record!");
            else if (isMappedPart && results.Count > 1)
                throw new Exception("Found more than one matching record!");
            else
            {
                result = results[0];
                if (selectForSID && results.Count() == 1)
                {
                    int? exits = CheckDisableHistory(result.ToString());
                    { }
                }
            }
            return result;
        }

    }

}