using Microsoft.Data.Sqlite;
using System.Globalization;

namespace TimeTable.controll {
    internal static class SqliteTaskCommands {

        public static string select = "select uid, lfdr, start, end, text, time from tasks";
        private static CultureInfo ci = System.Globalization.CultureInfo.GetCultureInfo("de-de");
        private static string insertPrefix = "insert into tasks (";
        private static string insertIntermediate = ") values(";
        private static string insertPostfix = ");";

        private static string updatePrefix = "update tasks set ";
        private static string updateIntermediate = " where uid = '";
        private static string updatePostfix = "';";


        public static void CreateTableIfNotExists(string sqlConnection) {
            SqliteConnection con = new SqliteConnection(sqlConnection);
            con.Open();
            SqliteCommand sqliteCmd = con.CreateCommand();
            sqliteCmd.CommandText = @"SELECT name FROM sqlite_master WHERE type='table' AND name='tasks';";

            var name = sqliteCmd.ExecuteScalar();
            if (name != null && name.ToString() == "tasks") {
                return;
            }
            var cols = "lfdr INTEGER PRIMARY KEY AUTOINCREMENT,";
            string[] columns = new string[5] { "start", "end", "text", "time", "uid" };
            cols += string.Join(" VARCHAR,", columns);
            cols = cols + " Varchar";
            sqliteCmd.CommandText = "CREATE TABLE tasks (" + cols + ")";
            con.Open();
            sqliteCmd.ExecuteNonQuery();
            con.Close();
        }
    }
}