telegram-bot/Core/Extensions/HttpClientExtension.cs

using System;
using System.Net.Http;
using System.Text.Json;
using System.Threading.Tasks;

namespace Kruzya.TelegramBot.Core.Extensions;

public static class HttpClientExtension
{
    public static async Task<T?> GetJsonAsync<T>(this HttpClient client, Uri requestUri)
    {
        var response = await client.GetStringAsync(requestUri);
        return JsonSerializer.Deserialize<T>(response);
    }

    public static async Task<T?> GetJsonAsync<T>(this HttpClient client, string requestUri)
    {
        var response = await client.GetStringAsync(requestUri);
        return JsonSerializer.Deserialize<T>(response);
    }
}