using System;
using System.Collections.Generic;
using System.Text;
using Npgsql;
using System.Collections;
using System.Data;

namespace SafeMobileLib
{
    public class DBsettingsManager: DBmanager
    {
        public static readonly string EMERGENCY_ONLY_KEY = "emergencyOnly";

        public DBsettingsManager(string p_server, string p_dbname, string p_user, string p_password, string p_port)
            : base(p_server,  p_dbname,  p_user,  p_password,  p_port)
        {

        }

        public sqlResponse addSetting(int userIdx, string key, string value)
        {
            
            sqlResponse resp = sqlResponse.noUpdate;


            try
            {
                using (NpgsqlConnection connection = new NpgsqlConnection())
                {

                    connection.ConnectionString = getConnectionString();
                    connection.Open();


                    string command = $"SELECT count(key) FROM \"userSettings\" where user_id = {userIdx} and key = '{key}'";

                    object result = null;
                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {
                        result = cmd.ExecuteScalar();
                    }


                    if (result != null && result.ToString() == "0")
                    {
                        command = "INSERT INTO \"userSettings\" (user_id, key, value)" +
                                    $" VALUES({userIdx},'{key}','{value}')";

                        using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                        {
                            cmd.ExecuteNonQuery();
                        }

                        resp = sqlResponse.done;
                    }

                }
            }
            catch (Exception ee)
            {
                Console.WriteLine(ee.Message + " " + ee.StackTrace + " " + ee.Source);
                resp = sqlResponse.SQLerror;
            }
            

            return resp;
        }

        public string getSettingValue(int userIdx, string key)
        {
            string value = "";

            try
            {
                using (NpgsqlConnection connection = new NpgsqlConnection())
                {

                    connection.ConnectionString = getConnectionString();
                    connection.Open();

                    string command = $"SELECT value FROM \"userSettings\" WHERE user_id= {userIdx} AND key='{key}'";

                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {

                        using (NpgsqlDataReader reader = cmd.ExecuteReader())
                        {
                            while (reader.Read())
                            {
                                value = reader.GetValue(0).ToString();
                            }
                        }
                    }
                }

            }
            catch (Exception ex)
            {
                Utils.WriteLine("getSettingValue " + ex.ToString(), ConsoleColor.Red);
            }
            

            return value;

        }

        public sqlResponse updateSettingValue(int userIdx, string key, string value)
        {
            
            sqlResponse resp;

            try
            {

                using (NpgsqlConnection connection = new NpgsqlConnection())
                {
                    connection.ConnectionString = getConnectionString();
                    connection.Open();

                    string command = $"SELECT COUNT(user_id) FROM \"userSettings\" WHERE user_id={userIdx} AND key='{key}'";

                    object temp = null;
                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {
                        temp = cmd.ExecuteScalar();
                    }

                    if (temp != null && temp.ToString() == "1")
                    {
                        command = $" UPDATE \"userSettings\" SET value='{value}'" +
                                  $" WHERE user_id={userIdx} AND key='{key}'";

                        using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                        {
                            cmd.ExecuteNonQuery();
                        }

                        resp = sqlResponse.done;
                    }
                    else
                    {
                        Console.WriteLine("Setting -" + key + "- not found ... adding this for user with id:" + userIdx.ToString());
                        addSetting(userIdx, key, value);
                        resp = sqlResponse.done;
                    }
                }
            }
            catch (Exception ee)
            {
                Console.WriteLine(ee.Message + " " + ee.StackTrace + " " + ee.Source);
                resp = sqlResponse.SQLerror;
            }
            
            return resp;
        }
        
        public sqlResponse deleteSettingForUser(int userIdx)
        {
            sqlResponse resp;

            try
            {
                using (NpgsqlConnection connection = new NpgsqlConnection())
                {
                    connection.ConnectionString = getConnectionString();
                    connection.Open();

                    string command = $"DELETE FROM \"userSettings\" WHERE user_id={userIdx}";

                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {
                        cmd.ExecuteNonQuery();
                    }
                    resp = sqlResponse.done;
                }

            }
            catch (Exception ee)
            {
                Console.WriteLine(ee.Message + " " + ee.StackTrace + " " + ee.Source);
                resp = sqlResponse.SQLerror;
            }
            
            return resp;
        }

        public Hashtable getAllSettings(int userIdx)
        {
           
            Hashtable resp = new Hashtable();

            try
            {
                using (NpgsqlConnection connection = new NpgsqlConnection())
                {
                    connection.ConnectionString = getConnectionString();
                    connection.Open();


                    string command = $"SELECT key, value FROM \"userSettings\" WHERE user_id = {userIdx}";
                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {
                        using (NpgsqlDataReader Reader = cmd.ExecuteReader())
                        {
                            while (Reader.Read())
                            {
                                string key = Reader.GetValue(0).ToString();
                                string value = Reader.GetValue(1).ToString();

                                if (!resp.ContainsKey(key))
                                    resp.Add(key, value);
                            }
                        }
                    }
                }
            }
            catch (Exception ee)
            {
                Console.WriteLine(ee.ToString());
            }
           

            return resp;
        }



        public void SaveSettingsForUser(int userIdx, Hashtable data)
        {
            
            StringBuilder sb = new StringBuilder();

            foreach (DictionaryEntry Item in data)
            {
                String key   = (string)Item.Key;
                String value = (string)Item.Value;

                sb.Append(
                    "UPDATE \"userSettings\" SET \"value\"='" + value + "' WHERE \"key\"='" + key + "' AND user_id = '" + userIdx + "'; "
                    + " INSERT INTO \"userSettings\" (user_id, \"key\", \"value\") "
                    + $" SELECT {userIdx}, '{key}', '{value}' "
                    + $" WHERE NOT EXISTS (SELECT 1 FROM \"userSettings\" WHERE user_id={userIdx} AND \"key\"='{key}'); ");
            }


            try
            {

                using (NpgsqlConnection connection = new NpgsqlConnection())
                {
                    connection.ConnectionString = getConnectionString();
                    connection.Open();

                    using (NpgsqlCommand cmd = new NpgsqlCommand(sb.ToString(), connection))
                    {
                        cmd.ExecuteNonQuery();
                    }

                    string command = "DELETE FROM \"userSettings\" WHERE \"key\" LIKE 'onMap%' AND \"value\"='False';";
                    using (NpgsqlCommand cmd = new NpgsqlCommand(command, connection))
                    {
                        cmd.ExecuteNonQuery();
                    }
                }

            }
            catch (Exception ee)
            {
                Console.WriteLine(ee.Message + " " + ee.StackTrace + " " + ee.Source);
            }
            
        }

        public void AddDefaultSettings(int userIdx)
        {
            // start items
            addSetting(userIdx, "startLar", "0");
            addSetting(userIdx, "startLng", "0");
            addSetting(userIdx, "startZoom", "2");
            addSetting(userIdx, "startUnits", "0");
            addSetting(userIdx, "startAddress", "1");
            addSetting(userIdx, "startProxy", "false");
            addSetting(userIdx, "startProxyIP", "67.207.214.190"); 
            addSetting(userIdx, "startProxyPORT", "8085");

            //history
            addSetting(userIdx, "hisCompAddr", "true");
            addSetting(userIdx, "hisShowAdr", "true");
            addSetting(userIdx, "hisPlayTime", "500");
            addSetting(userIdx, "hisPauseTime", "2000");
            addSetting(userIdx, "hisStopTime", "300");
            addSetting(userIdx, "hisQuick", "false");
            addSetting(userIdx, "hisMinSpeed", "0");


            //live
            addSetting(userIdx, "liveCheck", "false");
            addSetting(userIdx, "liveIdleTime", "20");
            addSetting(userIdx, "liveNameDisplay", "true");
            addSetting(userIdx, "liveMultiColor", "false");
            addSetting(userIdx, "reportTime", "0");
            addSetting(userIdx, "iconTheme", "pin");
        }
    }
}