discord-bot/CompatBot/EventHandlers/Greeter.cs

using System.Threading.Tasks;
using CompatBot.Database;
using CompatBot.Utils;
using DSharpPlus.EventArgs;
using Microsoft.EntityFrameworkCore;

namespace CompatBot.EventHandlers
{
    internal static class Greeter
    {
        public static async Task OnMemberAdded(GuildMemberAddEventArgs args)
        {
            using var db = new BotDb();
            var explanation = await db.Explanation.FirstOrDefaultAsync(e => e.Keyword == "motd").ConfigureAwait(false);
            if (explanation != null)
            {
                var dm = await args.Member.CreateDmChannelAsync().ConfigureAwait(false);
                await dm.SendMessageAsync(explanation.Text, explanation.Attachment, explanation.AttachmentFilename).ConfigureAwait(false);
                Config.Log.Info($"Sent motd to {args.Member.GetMentionWithNickname()}");
            }
        }
    }
}