using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;

namespace crusherScanner
{
    internal class SettingsHandler
    {
        public void PutSettingsInternal(Settings settings)
        {

        }

        public Settings GetSettingsInternal()
        {
            //TODO: Fix this
            return new Settings();
        }

        /// <summary>
        /// Check the settings given are sane.
        /// </summary>
        /// <param name="settings">Settings to check.</param>
        /// <returns>True for sane, false if not.</returns>
        public static bool CheckSettings(Settings settings)
        {
            bool settingsCheckPassed = true;
            string replyMessage = "";


            if (settings.CrusherNo == 0)
            {
                replyMessage += "Crusher No must be a value between 1 and 3.\n";
                settingsCheckPassed = false;
            }
            settings.PrepmasterConnection = true;
            settings.PrepmasterMagazineSerial = "COM3,";
            if (settings.PrepmasterConnection)
            {
                if (settings.PrepmasterMagazineSerial == "" || settings.PrepmasterMagazineSerial == null)
                {
                    replyMessage += "Prepmaster Magazine Serial details are blank, Please enter valid serial details or set Prepmaster Connection to false.\n";
                    settingsCheckPassed = false;
                }
                else
                {
                    string tmpMsg;
                    (settingsCheckPassed, tmpMsg) = CheckSerial(settings.PrepmasterMagazineSerial);
                    replyMessage += tmpMsg + "\n";
                }
            }
            else
            {
                replyMessage += "Prepmaster Connection is set to false, SID's will not be sent to the crusher input.\n";
            }

            if (settings.LimsConnection)
            {
                if (settings.LimsConnString == "" || settings.LimsConnString == null)
                {
                    replyMessage += "LIMS connection details are blank, Please enter valid database connection details or set LIMS Connection to false.\n";
                    settingsCheckPassed = false;
                }
                else
                {
                    //TODO check LIMS connection details.
                }
            }
            else
            {
                replyMessage += "LIMS Connection is set to false, SID's will not be checked if they have been registered in LIMS.\n";
            }

            if (settings.OreDefInFile == "" || settings.OreDefInFile == null)
            {
                replyMessage += "Ore Def input folder is not set, Please select a directory where the Ore Def input files can be found.\n";
                settingsCheckPassed = false;
            }
            else
            {
                if(settings.OreDefInFile == settings.OreDefWorkFile)
                {
                    replyMessage += "Ore Def input folder and Ore Def working folder cannot be the same directory.\n";
                    settingsCheckPassed = false;
                }
                if (settings.OreDefInFile == settings.OreDefOutFile)
                {
                    replyMessage += "Ore Def input folder and Ore Def output folder cannot be the same directory.\n";
                    settingsCheckPassed = false;
                }
                if (!Directory.Exists(settings.OreDefInFile))
                {
                    replyMessage += $"Ore Def input folder is not accessable ({settings.OreDefInFile}).\n";
                    settingsCheckPassed = false;
                }
            }

            if (settings.OreDefWorkFile == "" || settings.OreDefWorkFile == null)
            {
                replyMessage += "Ore Def working folder is not set, Please select a directory where the Ore Def working files can be stored\\shared.\n";
                settingsCheckPassed = false;
            }
            else
            {
                if (settings.OreDefWorkFile == settings.OreDefOutFile)
                {
                    replyMessage += "Ore Def working folder and Ore Def output folder cannot be the same directory.\n";
                    settingsCheckPassed = false;
                }
                if (!Directory.Exists(settings.OreDefWorkFile))
                {
                    replyMessage += $"Ore Def working folder is not accessable ({settings.OreDefWorkFile}).\n";
                    settingsCheckPassed = false;
                }
            }

            if (settings.OreDefOutFile == "" || settings.OreDefOutFile == null)
            {
                replyMessage += "Ore Def output folder is not set, Please select a directory where the Ore Def output files can be stored.\n";
                settingsCheckPassed = false;
            }
            else
            {
                if (!Directory.Exists(settings.OreDefOutFile))
                {
                    replyMessage += $"Ore Def output folder is not accessable ({settings.OreDefOutFile}).\n";
                    settingsCheckPassed = false;
                }
            }
            
            if (settings.OreDefTypes == "" || settings.OreDefTypes == null)
            {
                replyMessage += "Ore Def barcode prefix's are not set, Please enter a barcode prefix for Ore Def samples (comma delimited for multiples).\n";
                settingsCheckPassed = false;
            }
            
            if (settings.OutputFormat == "" || settings.OutputFormat == null)
            {
                replyMessage += "Ore Def output format not set, Please enter a format for Ore Def output files (default is CSV).\n";
                settingsCheckPassed = false;
            }

            if (settingsCheckPassed)
            {
                MessageBox.Show(replyMessage,"Settings check",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show(replyMessage, "Settings check", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            return settingsCheckPassed;
        }

        private static (bool,string) CheckSerial(string serialSetup)
        {
            string[] comPorts = { "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "COM10", "COM11", "COM12", "COM13", "COM14", "COM15", "COM16" };
            string[] BaudRate = { "300", "600", "1200", "2400", "4800", "9600", "19200", "38400", "57600", "115200", "230400", "460800", "921600"};
            string[] Parity = { "Parity.None", "Parity.Odd", "Parity.Even", "Parity.Mark", "Parity.Space" };
            string[] DataBits = { "5", "6", "7", "8" };
            string[] StopBits = { "StopBits.None", "StopBits.One", "StopBits.Two", "StopBits.OnePointFive" };
            string[][] serialVals = {comPorts, BaudRate, Parity, DataBits, StopBits };
            //COM1,9600,Parity.None,8,StopBits.One
            if (serialSetup.Contains(','))
            {
                string[] serialConfig = serialSetup.Split(',');

                for (int i = 0; i < serialConfig.Length; i++)
                {
                    if(!Validate(serialConfig[i], serialVals[i])){
                        return (false, "Serial connection settings error, please fix. example 'COM1,9600,Parity.None,8,StopBits.One' (no trailing comma)");
                    }
                }
                return (true, "");
            }
            else
            {
                return (Validate(serialSetup,comPorts),"");
            }
        }

        private static bool Validate(string value, string[] acceptable)
        {
            foreach (var item in acceptable)
            {
                if(value == item)
                {
                    return true;
                }
            }
            return false;
        }

        private static void CheckLims(string limsSetup)
        {

        }

    }
}