using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SQLite;
using System.IO;
using System.Windows.Forms;

namespace Test_Merge
{
    public class SqliteStorage
    {
        private const string DATABASE_FOLDER = "./Data";
        private const string DATABASE_FILE = "/database.sqlite";
        private const string CONNECTION_STRING = "Data Source=" + DATABASE_FOLDER + DATABASE_FILE + ";Version=3;";

        private SQLiteConnection Connection;
        public SqliteStorage()
        {
            Load();
        }
        private void Load()
        {
            if (!Directory.Exists(DATABASE_FOLDER))
                Directory.CreateDirectory(DATABASE_FOLDER);

            if (!File.Exists(DATABASE_FOLDER + DATABASE_FILE))
            {
                SQLiteConnection.CreateFile(DATABASE_FOLDER + DATABASE_FILE);
            }
            else
            {
                //We are not using the existing DataBase
                File.Delete(DATABASE_FOLDER + DATABASE_FILE);
            }

            Connection = new SQLiteConnection(CONNECTION_STRING);
            Connection.Open();

            //Create the drivers table
            string createDriversTableQuery = @"CREATE TABLE IF NOT EXISTS Drivers 
                (ID INTEGER PRIMARY KEY AUTOINCREMENT,
                Name VARCHAR NOT NULL);";
            using (var command = new SQLiteCommand(createDriversTableQuery, Connection))
            {
                command.ExecuteNonQuery();
            }

            //Create the drivers table
            string createPitstopTableQuery = @"CREATE TABLE Pitstops
                (Lap INTEGER NOT NULL,
                DriverID INTEGER NOT NULL,
                Tyre VARCHAR,
                PRIMARY KEY (Lap,DriverID));";
            using (var command = new SQLiteCommand(createPitstopTableQuery, Connection))
            {
                command.ExecuteNonQuery();
            }

            //Create the stats
            string createStatsTableQuery = @"CREATE TABLE IF NOT EXISTS Stats 
                (Lap INTEGER NOT NULL,
                DriverID INTEGER NOT NULL,
                Tyre VARCHAR NOT NULL,
                LapTime INTEGER NOT NULL,
                Sector1 INTEGER NOT NULL,
                Sector2 INTEGER NOT NULL,
                Sector3 INTEGER NOT NULL,
                GapToLeader INTEGER NOT NULL,
                Position INTEGER NOT NULL,
                PRIMARY KEY (Lap, DriverID));";
            using (var command = new SQLiteCommand(createStatsTableQuery, Connection))
            {
                command.ExecuteNonQuery();
            }
        }
        public void AddDriver(string name)
        {
            string insertQuery = "INSERT INTO Drivers (Name) VALUES (@name);";

            using (var command = new SQLiteCommand(insertQuery,Connection))
            {
                command.Parameters.AddWithValue("@Name",name);

                try
                {
                    command.ExecuteNonQuery();
                }
                catch
                {
                    //MessageBox.Show("An error has occured while trying to insert a new driver into de Database");
                }
            }
        }
        private int GetDriverID(string name)
        {
            string selectQuery = "SELECT ID FROM Drivers where Name LIKE @driverName";
            int result = 0;
            using (var command = new SQLiteCommand(selectQuery,Connection))
            {
                command.Parameters.AddWithValue("@driverName",name);
                try
                {
                    using (var reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            result = reader.GetInt32(0);
                        }
                    }
                }
                catch
                {
                    //MessageBox.Show("There has been an error while trying to retrieve the ID of a Driver from the database");
                }
            }
            return result;
        }
        public void AddPitstop(string driverName,int lap,string tyre)
        {
            string insertQuery = "INSERT INTO Pitstops (Lap,DriverID,Tyre) VALUES (@Lap,@DriverID,@Tyre)";

            using (var command = new SQLiteCommand(insertQuery,Connection))
            {
                command.Parameters.AddWithValue("@Lap",lap);
                command.Parameters.AddWithValue("@DriverID",GetDriverID(driverName));
                command.Parameters.AddWithValue("@Tyre",tyre);
                try
                {
                    command.ExecuteNonQuery();
                }
                catch
                {
                    //MessageBox.Show("An error has occured while trying to insert a new pitstop into the DB" + Environment.NewLine + "Request :"+ command.ToString());
                }
            }
        }
        public void AddDriverStat(DriverData data,int lap)
        {
            string insertQuery = "INSERT INTO Stats (Lap,DriverID,Tyre,LapTime,Sector1,Sector2,Sector3,GapToLeader,Position) VALUES (@Lap,@DriverID,@Tyre,@LapTime,@Sector1,@Sector2,@Sector3,@GapToLeader,@Position);";

            using (var command = new SQLiteCommand(insertQuery,Connection))
            {
                command.Parameters.AddWithValue("@Lap",lap);
                command.Parameters.AddWithValue("@DriverID",GetDriverID(data.Name));
                command.Parameters.AddWithValue("@Tyre",data.CurrentTyre.Coumpound.ToString());
                command.Parameters.AddWithValue("@LapTime",data.LapTime);
                command.Parameters.AddWithValue("@Sector1",data.Sector1);
                command.Parameters.AddWithValue("@Sector2", data.Sector2);
                command.Parameters.AddWithValue("@Sector3", data.Sector3);
                command.Parameters.AddWithValue("@GapToLeader", data.GapToLeader);
                command.Parameters.AddWithValue("@Position", data.Position);

                try
                {
                    command.ExecuteNonQuery();
                }
                catch
                {
                    //MessageBox.Show("An error has occured while trying to insert infos about a driver");
                }
            }
        }
    }
}