telegram-bot/modules/ContentStore/Handler/NSFW.cs

using BotFramework;
using BotFramework.Attributes;
using BotFramework.Enums;
using Kruzya.TelegramBot.Core.Data;
using Kruzya.TelegramBot.Core.Extensions;
using Telegram.Bot;
using Telegram.Bot.Types;

namespace West.TelegramBot.ContentStore.Handler;

public class NSFW : BotEventHandler
{
    private readonly CoreContext _db;

    public NSFW(CoreContext db)
    {
        _db = db;
    }

    [InChat(InChat.Public)]
    [Command("nsfw", CommandParseMode.Both)]
    public async Task HandleNSFW()
    {
        var canUse = await Bot.GetChatMemberAsync(Chat.Id, From.Id) is ChatMemberAdministrator { CanDeleteMessages: true }
            or ChatMemberOwner;
        if (!canUse)
        {
            return;
        }

        var option = await _db.UserValues.FindOrCreateOption(Chat.Id, "AllowNSFW");
        var newValue = !option.GetValue<bool>();
        option.SetValue(newValue);
        await _db.SaveChangesAsync();

        await Bot.SendTextMessageAsync(Chat.Id,$"NSFW {(newValue ? "enabled" : "disabled")}");
    }
}