Newsbot.Collector/Newsbot.Collector.Services/Notifications/Discord/DiscordWebhookClient.cs

using System.Net;
using System.Text;
using Newsbot.Collector.Domain.Interfaces;
using Newsbot.Collector.Domain.Models;
using Newtonsoft.Json;

namespace Newsbot.Collector.Services.Notifications.Discord;

public class DiscordWebhookClient : IDiscordNotificatioClient
{
    private readonly string[] _webhooks;

    public DiscordWebhookClient(string webhook)
    {
        _webhooks = new[] { webhook };
    }

    public DiscordWebhookClient(string[] webhooks)
    {
        _webhooks = webhooks;
    }

    public void SendMessage(DiscordMessage payload)
    {
        if (payload.Embeds is not null) MessageValidation.IsEmbedFooterValid(payload.Embeds);

        foreach (var webhook in _webhooks)
        {
            var jsonRaw = JsonConvert.SerializeObject(payload, Formatting.None,
                new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
            using StringContent jsonContent = new(jsonRaw, Encoding.UTF8, "application/json");

            using var client = new HttpClient();
            var resp = client.PostAsync(webhook, jsonContent);
            resp.Wait();

            // can be 204 or a message, might be 200
            Console.WriteLine(resp.Result.StatusCode);
            if (resp.Result.StatusCode != HttpStatusCode.NoContent)
            {
                throw new Exception("Message was not accepted by the sever.");
            }
            if (resp.Result.StatusCode == HttpStatusCode.BadRequest)
            {
                throw new Exception("Message was not accepted.  Make sure all values are not null");
            }
        }
    }
}