telegram-bot/modules/ChatManagement/Handler/Command.cs

using System;
using System.Threading.Tasks;
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;
using Telegram.Bot.Types.Enums;

namespace West.TelegramBot.ChatManagement.Handler
{
    public class Command : BotEventHandler
    {
        private CoreContext _db;
        
        public Command(CoreContext db)
        {
            _db = db;
        }

        [Command("warn", CommandParseMode.Both)]
        public async Task HandleWarn()
        {
            var callerMember = await Bot.GetChatMemberAsync(Chat, From.Id);
            var canUse = callerMember is ChatMemberOwner;

            if (callerMember is ChatMemberAdministrator callerAdmin)
            {
                canUse = callerAdmin.CanRestrictMembers;
            }

            if (canUse)
            {
                var userValues = _db.UserValues;

                var warnUser = RawUpdate.Message.ReplyToMessage.From;
                var warnUserId = warnUser.Id;
                var warnOption = await userValues.FindOrCreateOption(Chat.Id, warnUserId, "warnCount");
                var warnCount = warnOption.GetValue<int>() + 1;
                warnOption.SetValue(warnCount);
                _db.MarkAsModified(warnOption);
                
                await Bot.SendTextMessageAsync(Chat.Id, $"{warnUser.ToHtml()}<pre>, Вам выдано предупреждение! " +
                                                        $"Текущее кол-во: {warnCount} / 3</pre", 
                    disableNotification: true, 
                    parseMode: ParseMode.Html);
                
                if (warnCount == 3)
                {
                    await Bot.RestrictChatMemberAsync(
                        Chat.Id,
                        warnUserId,
                        new ChatPermissions
                        {
                            CanSendMessages = false
                        },
                        DateTime.Now.AddDays(7)
                        );
                    warnOption.SetValue(0);

                    await Bot.SendTextMessageAsync(
                        Chat.Id, $"{From.ToHtml()} <pre>заблокировал</pre> {warnUser.ToHtml()} <pre>на 7 дней</pre>",
                        disableNotification: true, parseMode: ParseMode.Html);
                }
            }
        }
    }
}