namespace LaaProductionWeb.Data
{
    using LaaProductionWeb.Data.Interfaces;

    using Microsoft.Extensions.DependencyInjection;

    using System;
    using System.Data.SqlClient;
    using System.Diagnostics;
    using System.Threading.Tasks;

    public static class SqlClientExtensions
    {
        public static IServiceCollection AddDbContext(this IServiceCollection services, string connectionString)
        {
            services.AddTransient<ISqlClient>(_ => new SqlClient(connectionString));

            return services;
        }

        internal static void OpenWithErrorHandling(this SqlConnection sqlConnection, SqlInfoMessageEventHandler messageHandler = null)
        {
            sqlConnection.FireInfoMessageEventOnUserErrors = true;
            sqlConnection.InfoMessage += SqlConnectionInfoMessage;

            if (messageHandler != null)
            {
                sqlConnection.InfoMessage += messageHandler;
            }

            sqlConnection.Open();
        }

        internal static async Task OpenWithErrorHandlingAsync(this SqlConnection sqlConnection, SqlInfoMessageEventHandler messageHandler = null)
        {
            sqlConnection.FireInfoMessageEventOnUserErrors = true;
            sqlConnection.InfoMessage += SqlConnectionInfoMessage;

            if (messageHandler != null)
            {
                sqlConnection.InfoMessage += messageHandler;
            }

            await sqlConnection.OpenAsync();
        }

        internal static void SqlConnectionInfoMessage(object sender, SqlInfoMessageEventArgs e)
        {
            Debug.WriteLine(e);

            Log($"[{DateTime.Now: hh:mm:ss}] Error: {e.Source} - {e.Message}{Environment.NewLine}{string.Join(Environment.NewLine, e.Errors)}");

            // TODO: Handle errors
        }

        internal static void Log(string message)
        {
            // File.AppendAllText($"{Environment.CurrentDirectory}/App_Data/{DateTime.Now:yyyy_MM_dd}.log",  $"{Environment.NewLine}{message}{Environment.NewLine}");
        }
    }
}