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#include "../abaddon.hpp"
#include "discord.hpp"
#include <cassert>
DiscordClient::DiscordClient() {
LoadEventMap();
}
void DiscordClient::SetAbaddon(Abaddon *ptr) {
m_abaddon = ptr;
}
void DiscordClient::Start() {
assert(!m_client_connected);
assert(!m_websocket.IsOpen());
m_client_connected = true;
m_websocket.StartConnection(DiscordGateway);
m_websocket.SetJSONCallback(std::bind(&DiscordClient::HandleGatewayMessage, this, std::placeholders::_1));
}
void DiscordClient::Stop() {
if (!m_client_connected) return;
m_heartbeat_waiter.kill();
m_heartbeat_thread.join();
m_client_connected = false;
m_websocket.Stop();
}
bool DiscordClient::IsStarted() const {
return m_client_connected;
}
void DiscordClient::HandleGatewayMessage(nlohmann::json j) {
GatewayMessage m;
try {
m = j;
} catch (std::exception &e) {
printf("Error decoding JSON. Discarding message: %s\n", e.what());
return;
}
switch (m.Opcode) {
case GatewayOp::Hello: {
HelloMessageData d = m.Data;
m_heartbeat_msec = d.HeartbeatInterval;
m_heartbeat_thread = std::thread(std::bind(&DiscordClient::HeartbeatThread, this));
SendIdentify();
} break;
case GatewayOp::HeartbeatAck: {
m_heartbeat_acked = true;
} break;
case GatewayOp::Event: {
auto iter = m_event_map.find(m.Type);
if (iter == m_event_map.end()) {
printf("Unknown event %s\n", m.Type.c_str());
break;
}
switch (iter->second) {
case GatewayEvent::READY: {
HandleGatewayReady(m);
}
}
} break;
default:
printf("Unknown opcode %d\n", m.Opcode);
break;
}
}
void DiscordClient::HandleGatewayReady(const GatewayMessage &msg) {
}
void DiscordClient::HeartbeatThread() {
while (m_client_connected) {
if (!m_heartbeat_acked) {
printf("wow! a heartbeat wasn't acked! how could this happen?");
}
m_heartbeat_acked = false;
HeartbeatMessage msg;
msg.Sequence = m_last_sequence;
nlohmann::json j = msg;
m_websocket.Send(j);
if (!m_heartbeat_waiter.wait_for(std::chrono::milliseconds(m_heartbeat_msec)))
break;
}
}
void DiscordClient::SendIdentify() {
auto token = m_abaddon->GetDiscordToken();
assert(token.size());
IdentifyMessage msg;
msg.Properties.OS = "OpenBSD";
msg.Properties.Device = GatewayIdentity;
msg.Properties.Browser = GatewayIdentity;
msg.Token = token;
m_websocket.Send(msg);
}
void DiscordClient::LoadEventMap() {
m_event_map["READY"] = GatewayEvent::READY;
}
void from_json(const nlohmann::json &j, GatewayMessage &m) {
j.at("op").get_to(m.Opcode);
m.Data = j.at("d");
if (j.contains("t") && !j.at("t").is_null())
j.at("t").get_to(m.Type);
}
void from_json(const nlohmann::json &j, HelloMessageData &m) {
j.at("heartbeat_interval").get_to(m.HeartbeatInterval);
}
void to_json(nlohmann::json &j, const IdentifyProperties &m) {
j["$os"] = m.OS;
j["$browser"] = m.Browser;
j["$device"] = m.Device;
}
void to_json(nlohmann::json &j, const IdentifyMessage &m) {
j["op"] = GatewayOp::Identify;
j["d"] = nlohmann::json::object();
j["d"]["token"] = m.Token;
j["d"]["properties"] = m.Properties;
if (m.LargeThreshold)
j["d"]["large_threshold"] = m.LargeThreshold;
}
void to_json(nlohmann::json &j, const HeartbeatMessage &m) {
j["op"] = GatewayOp::Heartbeat;
if (m.Sequence == -1)
j["d"] = nullptr;
else
j["d"] = m.Sequence;
}
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