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#include <plog/Init.h>
#include <plog/Log.h>
#include <websocketpp/client.hpp>
#include <websocketpp/config/asio_client.hpp>
#include "nostr.hpp"
#include "client/web_socket_client.hpp"
using std::async;
using std::future;
using std::lock_guard;
using std::make_tuple;
using std::move;
using std::mutex;
using std::string;
using std::thread;
using std::tuple;
using std::vector;
namespace nostr
{
NostrService::NostrService(plog::IAppender* appender, client::IWebSocketClient* client)
: NostrService(appender, client, {}) { };
NostrService::NostrService(plog::IAppender* appender, client::IWebSocketClient* client, RelayList relays)
: _defaultRelays(relays), _client(client)
{
plog::init(plog::debug, appender);
client->start();
};
NostrService::~NostrService()
{
this->_client->stop();
delete this->_client;
};
RelayList NostrService::defaultRelays() const { return this->_defaultRelays; };
RelayList NostrService::activeRelays() const { return this->_activeRelays; };
RelayList NostrService::openRelayConnections()
{
return this->openRelayConnections(this->_defaultRelays);
};
RelayList NostrService::openRelayConnections(RelayList relays)
{
PLOG_INFO << "Attempting to connect to Nostr relays.";
RelayList unconnectedRelays = this->getUnconnectedRelays(relays);
vector<thread> connectionThreads;
for (string relay : unconnectedRelays)
{
thread connectionThread([this, relay]() {
this->connect(relay);
});
connectionThreads.push_back(move(connectionThread));
}
for (thread& connectionThread : connectionThreads)
{
connectionThread.join();
}
size_t targetCount = relays.size();
size_t activeCount = this->_activeRelays.size();
PLOG_INFO << "Connected to " << activeCount << "/" << targetCount << " target relays.";
// This property should only contain successful relays at this point.
return this->_activeRelays;
};
void NostrService::closeRelayConnections()
{
if (this->_activeRelays.size() == 0)
{
PLOG_INFO << "No active relay connections to close.";
return;
}
this->closeRelayConnections(this->_activeRelays);
};
void NostrService::closeRelayConnections(RelayList relays)
{
PLOG_INFO << "Disconnecting from Nostr relays.";
RelayList connectedRelays = getConnectedRelays(relays);
vector<thread> disconnectionThreads;
for (string relay : connectedRelays)
{
thread disconnectionThread([this, relay]() {
this->disconnect(relay);
});
disconnectionThreads.push_back(move(disconnectionThread));
}
for (thread& disconnectionThread : disconnectionThreads)
{
disconnectionThread.join();
}
};
tuple<RelayList, RelayList> NostrService::publishEvent(Event event)
{
// TODO: Add validation function.
RelayList successfulRelays;
RelayList failedRelays;
PLOG_INFO << "Attempting to publish event to Nostr relays.";
vector<future<tuple<string, bool>>> publishFutures;
for (string relay : this->_activeRelays)
{
future<tuple<string, bool>> publishFuture = async([this, relay, event]() {
return this->_client->send(event.serialize(), relay);
});
publishFutures.push_back(move(publishFuture));
}
for (auto& publishFuture : publishFutures)
{
auto [relay, isSuccess] = publishFuture.get();
if (isSuccess)
{
successfulRelays.push_back(relay);
}
else
{
failedRelays.push_back(relay);
}
}
size_t targetCount = this->_activeRelays.size();
size_t successfulCount = successfulRelays.size();
PLOG_INFO << "Published event to " << successfulCount << "/" << targetCount << " target relays.";
return make_tuple(successfulRelays, failedRelays);
};
RelayList NostrService::getConnectedRelays(RelayList relays)
{
PLOG_VERBOSE << "Identifying connected relays.";
RelayList connectedRelays;
for (string relay : relays)
{
bool isActive = find(this->_activeRelays.begin(), this->_activeRelays.end(), relay)
!= this->_activeRelays.end();
bool isConnected = this->_client->isConnected(relay);
PLOG_VERBOSE << "Relay " << relay << " is active: " << isActive << ", is connected: " << isConnected;
if (isActive && isConnected)
{
connectedRelays.push_back(relay);
}
else if (isActive && !isConnected)
{
this->eraseActiveRelay(relay);
}
else if (!isActive && isConnected)
{
this->_activeRelays.push_back(relay);
connectedRelays.push_back(relay);
}
}
return connectedRelays;
};
RelayList NostrService::getUnconnectedRelays(RelayList relays)
{
PLOG_VERBOSE << "Identifying unconnected relays.";
RelayList unconnectedRelays;
for (string relay : relays)
{
bool isActive = find(this->_activeRelays.begin(), this->_activeRelays.end(), relay)
!= this->_activeRelays.end();
bool isConnected = this->_client->isConnected(relay);
PLOG_VERBOSE << "Relay " << relay << " is active: " << isActive << ", is connected: " << isConnected;
if (!isActive && !isConnected)
{
PLOG_VERBOSE << "Relay " << relay << " is not active and not connected.";
unconnectedRelays.push_back(relay);
}
else if (isActive && !isConnected)
{
PLOG_VERBOSE << "Relay " << relay << " is active but not connected. Removing from active relays list.";
this->eraseActiveRelay(relay);
unconnectedRelays.push_back(relay);
}
else if (!isActive && isConnected)
{
PLOG_VERBOSE << "Relay " << relay << " is connected but not active. Adding to active relays list.";
this->_activeRelays.push_back(relay);
}
}
return unconnectedRelays;
};
bool NostrService::isConnected(string relay)
{
auto it = find(this->_activeRelays.begin(), this->_activeRelays.end(), relay);
if (it != this->_activeRelays.end()) // If the relay is in this->_activeRelays
{
return true;
}
return false;
};
void NostrService::eraseActiveRelay(string relay)
{
auto it = find(this->_activeRelays.begin(), this->_activeRelays.end(), relay);
if (it != this->_activeRelays.end()) // If the relay is in this->_activeRelays
{
this->_activeRelays.erase(it);
}
};
void NostrService::connect(string relay)
{
PLOG_VERBOSE << "Connecting to relay " << relay;
this->_client->openConnection(relay);
lock_guard<mutex> lock(this->_propertyMutex);
bool isConnected = this->_client->isConnected(relay);
if (isConnected)
{
PLOG_VERBOSE << "Connected to relay " << relay << ": " << isConnected;
this->_activeRelays.push_back(relay);
}
else
{
PLOG_ERROR << "Failed to connect to relay " << relay;
}
};
void NostrService::disconnect(string relay)
{
this->_client->closeConnection(relay);
lock_guard<mutex> lock(this->_propertyMutex);
this->eraseActiveRelay(relay);
};
} // namespace nostr
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