DiscordClient/DiscordClient/DiscordUserClient.cs

using System.Net.Http.Headers;
using System.Net.Http.Json;
using DiscordClient.Data;

namespace DiscordClient;

public class DiscordUserClient
{
    private readonly HttpClient _httpClient;

    public DiscordUserClient(string authorizationToken)
    {
        _httpClient = new HttpClient();
        _httpClient.DefaultRequestHeaders.Host = "discord.com";
        _httpClient.DefaultRequestHeaders.Authorization = AuthenticationHeaderValue.Parse(
            authorizationToken
        );
    }

    public async Task<ChannelMessagesResponse[]?> GetChannelMessages(
        string channelId,
        int limit = 50
    )
    {
        string url = $"https://discord.com/api/v9/channels/{channelId}/messages?limit={limit}";
        HttpResponseMessage response = await _httpClient.GetAsync(url);
        return await response.Content.ReadFromJsonAsync<ChannelMessagesResponse[]>();
    }
}