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using System.Data.Common;
using System.Diagnostics;
using System.Net.Http.Json;
using System.Net.WebSockets;
using System.Text.Json;
using System.Text.Json.Nodes;
using ArcaneLibs.Extensions;
using Spacebar.Models.Api;
using Spacebar.Models.Gateway;
using Spacebar.Models.Generic;
namespace Spacebar.Client.Core;
public class UnauthenticatedSpacebarClient(ILogger<UnauthenticatedSpacebarClient> logger, SpacebarClientWellKnown wellKnown) {
public async Task<LoginResponse> LoginAsync(LoginRequest request) {
// TODO: rebase
using var hc = new HttpClient();
var resp = await hc.PostAsJsonAsync(new Uri(wellKnown.Api.GetApiBaseUrl(), "auth/login"), request);
// TODO: abstract out
if (!resp.IsSuccessStatusCode) throw SpacebarApiException.FromJson((await resp.Content.ReadFromJsonAsync<JsonObject>())!);
return (await resp.Content.ReadFromJsonAsync<LoginResponse>())!;
}
}
public class AuthenticatedSpacebarClient {
private readonly ILogger<AuthenticatedSpacebarClient> _logger;
public AuthenticatedSpacebarClient(ILogger<AuthenticatedSpacebarClient> logger, IServiceProvider sp, SpacebarClientWellKnown wellKnown, string token) {
_logger = logger;
ApiHttpClient = new HttpClient() {
BaseAddress = wellKnown.Api.GetApiBaseUrl()
};
ApiHttpClient.DefaultRequestHeaders.Authorization = new("Bearer", token);
Gateway = new(sp.GetRequiredService<ILogger<AuthenticatedSpacebarGatewayClient>>(), wellKnown, token);
ClientWellKnown = wellKnown;
}
public HttpClient ApiHttpClient { get; set; }
public AuthenticatedSpacebarGatewayClient Gateway { get; set; }
public SpacebarClientWellKnown ClientWellKnown { get; set; }
// TODO: write a proper full user model...
public async Task<PartialUser> GetCurrentUser() {
var resp = await ApiHttpClient.GetAsync("users/@me");
// TODO: abstract out
if (!resp.IsSuccessStatusCode) throw SpacebarApiException.FromJson((await resp.Content.ReadFromJsonAsync<JsonObject>())!);
return (await resp.Content.ReadFromJsonAsync<PartialUser>())!;
}
~AuthenticatedSpacebarClient() {
ApiHttpClient.Dispose();
}
public SpacebarClientChannel GetChannel(long channelId) {
return new(this, channelId);
}
}
public class SpacebarClientChannel(AuthenticatedSpacebarClient client, long channelId) {
public long Id => channelId;
public async Task<List<Message>> GetMessagesAsync(long? around = null, long? before = null, long? after = null, int limit = 50) {
var uri = $"channels/{channelId}/messages?limit={limit}";
if (around.HasValue) uri += $"&around={around.Value}";
if (before.HasValue) uri += $"&before={before.Value}";
if (after.HasValue) uri += $"&after={after.Value}";
var resp = await client.ApiHttpClient.GetAsync(uri);
// TODO: abstract out
if (!resp.IsSuccessStatusCode) throw SpacebarApiException.FromJson((await resp.Content.ReadFromJsonAsync<JsonObject>())!);
var data = await resp.Content.ReadFromJsonAsync<List<JsonObject>>();
Console.WriteLine(data.ToJson(indent: false, ignoreNull: true));
return data.Select(x => x.Deserialize<Message>()).ToList();
}
}
public class AuthenticatedSpacebarGatewayClient(ILogger<AuthenticatedSpacebarGatewayClient> logger, SpacebarClientWellKnown wellKnown, string token) {
public ClientWebSocket RawClientWebSocket = new();
public int Sequence;
public bool TraceGatewayMessages = false;
public IdentifyRequest IdentifyData { get; } = new() {
Intents = (GatewayIntentFlags?)0xFFFFFFFF, // too lazy to do math, just gimme everything
Capabilities = 0
};
public List<Func<GatewayPayload, Task>> OnGatewayMessage { get; } = [];
public List<Func<GatewayPayload, Task<bool>>> OnceGatewayMessage { get; } = [];
public async Task Connect() {
if (RawClientWebSocket.State is WebSocketState.Connecting or WebSocketState.Open) return;
Sequence = 0;
await RawClientWebSocket.ConnectAsync(new Uri(wellKnown.Gateway.BaseUrl).AddQuery("encoding", "json"), CancellationToken.None);
}
public async Task Start() {
await foreach (var msg in _runReceiveLoop()) {
// logger.LogInformation("Got gateway message: {msg}", msg);
if (msg.Opcode == GatewayOpcode.S2CHello) {
_ = _runHeartbeatLoop(msg.GetData<HelloResponse>()!.HeartbeatInterval).ContinueWith(ct => {
logger.LogWarning("Heartbeat loop exited!");
if (ct.IsFaulted) throw ct.Exception;
});
IdentifyData.Token = token;
await RawClientWebSocket.SendAsync(JsonSerializer.SerializeToUtf8Bytes(new GatewayPayload() {
Opcode = GatewayOpcode.C2SIdentify, // Identify
EventData = IdentifyData.ToJsonNode().AsObject()
}), WebSocketMessageType.Text, WebSocketMessageFlags.EndOfMessage, CancellationToken.None);
}
else if (msg.Opcode == GatewayOpcode.S2CHeartbeatAck) {
logger.LogInformation("Got heartbeat ACK from server!");
}
await Task.WhenAll(OnGatewayMessage.Select(async x => {
try {
await x(msg);
}
catch (Exception e) {
logger.LogError("OnGatewayMessage callback failed: {e}", e);
}
}).ToArray());
foreach (var t in OnceGatewayMessage.Select((Func<GatewayPayload, Task<bool>> Callback, Task<bool> WasHandled) (cb) => (cb, cb(msg))).ToList()) {
try {
var handled = await t.WasHandled;
if (handled) {
OnceGatewayMessage.Remove(t.Callback);
}
}
catch (Exception e) {
logger.LogError("OnceGatewayMessage callback failed: {e}", e);
}
}
}
}
private async Task _runHeartbeatLoop(int interval) {
while (RawClientWebSocket.State < WebSocketState.Closed) {
await RawClientWebSocket.SendAsync(JsonSerializer.SerializeToUtf8Bytes(new GatewayPayload() {
Opcode = GatewayOpcode.C2SQoSHeartbeat, // QoS Heartbeat
EventData = new QoSHeartbeatRequest() {
Sequence = Sequence,
QoSPayload = new() {
Active = true,
Reasons = ["foregrounded"],
Version = 27
}
}.ToJsonNode().AsObject()
}), WebSocketMessageType.Text, WebSocketMessageFlags.EndOfMessage, CancellationToken.None);
await Task.Delay(interval);
}
}
private const int ReceiveBufferSize = 2 * 1024 * 1024;
private async IAsyncEnumerable<GatewayPayload> _runReceiveLoop() {
List<byte> messageParts = [];
List<(string Name, TimeSpan Elapsed)> trace = [];
var buffer = new byte[ReceiveBufferSize];
int idx = 0;
while (RawClientWebSocket.State < WebSocketState.Closed) {
var sw = Stopwatch.StartNew();
var msg = await RawClientWebSocket.ReceiveAsync(buffer, CancellationToken.None);
trace.Add(($"RCV.{idx}", sw.GetElapsedAndRestart()));
Console.WriteLine($"Websocket message chunk read: {msg.MessageType} {msg.Count} {msg.EndOfMessage}");
messageParts.AddRange(msg.Count < ReceiveBufferSize ? buffer[..msg.Count] : buffer);
trace.Add(($"STO.{idx}({msg.Count})", sw.GetElapsedAndRestart()));
idx++;
if (msg.EndOfMessage) {
Console.WriteLine($"Got message, deserialising {messageParts.Count} bytes...");
var fullMsg = messageParts.ToArray();
trace.Add(($"LD({messageParts.Count})", sw.GetElapsedAndRestart()));
var d = JsonSerializer.Deserialize<GatewayPayload>(fullMsg);
trace.Add(($"LJS({fullMsg.Length})", sw.GetElapsedAndRestart()));
Console.WriteLine($"Received gateway message #{d.Sequence}: {(byte)d.Opcode}/{d.Opcode.ToString().Replace("S2C", "")} {d.DispatchEventType}");
yield return d ?? throw new InvalidDataException("Gateway message deserialisation returned null?");
trace.Add(($"YLD", sw.GetElapsedAndRestart()));
if (TraceGatewayMessages) {
Console.WriteLine("Yielded message!");
Console.WriteLine("Trace:");
foreach (var t in trace)
Console.WriteLine($" - {t.Name}: {t.Elapsed}");
}
messageParts.Clear();
trace.Clear();
trace.Add(($"RST", sw.GetElapsedAndRestart()));
}
}
}
~AuthenticatedSpacebarGatewayClient() {
RawClientWebSocket.Dispose();
}
}
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