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

#nullable enable

using System;
using System.Threading.Tasks;
using BotFramework.Attributes;
using BotFramework.Enums;
using Kruzya.TelegramBot.Core;
using Kruzya.TelegramBot.Core.Data;
using Kruzya.TelegramBot.Core.Extensions;
using Telegram.Bot;
using Telegram.Bot.Types;
using Telegram.Bot.Types.Enums;
using West.TelegramBot.ChatManagement.ParamParser;

namespace West.TelegramBot.ChatManagement.Handler;

public class Ban : CommonHandler
{
    public Ban(CoreContext db) : base(db) {}

    [ParametrizedCommand("ban", CommandParseMode.Both)]
    public async Task HandleBan(BanLength.Param banLengthParam)
    {
        if (!await CanPunish())
        {
            return;
        }
        var now = DateTime.Now;
        var banEnd = now.AddDays(banLengthParam.DayCount);

        var banEndMsg = (banEnd - now).Days > 366 ? "навсегда" : $"до {banEnd:D}";

        /*
           TODO: cause this block of code is repeated in warn handler,
           TODO: I think we should abstract it somehow
           TODO: West, 25.04.2022, 20:10
        */
        
        try
        {
            await BanMember(RepliedUser!.Id, banEnd);
        }
        catch
        {
            await Bot.SendTextMessageAsync(Chat.Id, "Нет прав на блокировку пользователя.");
            return;
        }

        await Bot.SendTextMessageAsync(
            Chat.Id,
            $"{From.ToHtml()} <code>заблокировал</code> {RepliedUser!.ToHtml()} <code>{banEndMsg}</code>",
            disableNotification: true, parseMode: ParseMode.Html);
    }

    [Command("unban", CommandParseMode.Both)]
    public async Task HandleUnban()
    {
        if (!await CanPunish())
        {
            return;
        }

        await Bot.RestrictChatMemberAsync(Chat.Id, RepliedUser!.Id,
            new ChatPermissions
            {
                CanSendMessages = true,
                CanChangeInfo = true,
                CanInviteUsers = true,
                CanPinMessages = true,
                CanSendPolls = true,
                CanSendMediaMessages = true,
                CanSendOtherMessages = true,
                CanAddWebPagePreviews = true
            });

        await Reply($"{From.ToHtml()} <code>разблокировал</code> {RepliedUser!.ToHtml()}");
    }
}