telegram-bot/modules/ChatManagement/ParamParser/StickerSet.cs

using System;
using System.Linq;
using BotFramework;
using BotFramework.Abstractions;
using Microsoft.Extensions.Logging;
using Telegram.Bot;
using Telegram.Bot.Types;
using TgStickerSet = Telegram.Bot.Types.StickerSet;

namespace West.TelegramBot.ChatManagement.ParamParser;

public class StickerSet 
{
    public class Param
    {
        public TgStickerSet Set { get; set; }
        public bool IsValid { get; set; } = false;
    }

    public class Parser : IRawParameterParser<Param>
    {
        private readonly IBotInstance _bot;
        private readonly ILogger<StickerSet> _logger;

        public Parser(IBotInstance bot, ILogger<StickerSet> logger)
        {
            _bot = bot;
            _logger = logger;
        }

        public Param DefaultInstance()
        {
            return new Param();
        }

        public bool TryGetValueByRawUpdate(Update update, out Param result)
        {
            result = DefaultInstance();

            var bot = _bot.BotClient;

            var message = update?.Message;
            var sticker = message?.ReplyToMessage?.Sticker;
            if (sticker is { SetName: { } })
            {
                result.Set = bot.GetStickerSetAsync(sticker.SetName).GetAwaiter().GetResult();
                result.IsValid = true;
                return true;
            }

            var messageText = message?.Text;
            if (messageText != null)
            {
                var setName = messageText.Split(' ').Skip(1).ToList();
                if (setName.Any())
                {
                    try
                    {
                        result.Set = bot.GetStickerSetAsync(setName.First())
                            .GetAwaiter()
                            .GetResult();
                        result.IsValid = true;

                        return true;
                    }
                    catch (Exception e)
                    {
                        _logger.LogError("Got error while fetching sticker set: {ErrorMessage}", e.Message);
                        return true;
                    }
                }
            }

            return false;
        }
    }
}