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#include "libsock/server/client.hpp"
#include <algorithm>
#include <any>
#include <format>
#include <ranges>
#include <stdexcept>
#include <unistd.h>
#include <utility>
using namespace LibSock::Server;
void Clients::shutdownClients(std::optional<std::function<std::any(const std::vector<std::pair<std::jthread, SP<Client>>> &)>> cb) {
if (m_vClients.empty())
return;
if (cb)
(*cb)(m_vClients);
for (auto &[thread, client] : m_vClients) {
if (thread.joinable())
thread.detach();
client.reset();
}
m_vClients.clear();
}
Clients::Clients() {
// if (std::atexit([&]() {
// shutdownClients();
// }))
// void(); // failed to register exit handler...
if (pClients)
throw std::runtime_error("server:client: ClientManager already exist");
pClients = SP<Clients>(this);
};
Clients::~Clients() {
for (auto &[thread, client] : m_vClients) {
if (thread.joinable())
thread.detach();
kick(WP<Client>(client));
}
}
WP<Client> Clients::newClient(std::optional<std::function<std::any(WP<Client>)>> cb) {
SP client = std::make_shared<Client>();
auto &instance = m_vClients.emplace_back(std::jthread([client]() { client->run(); }), client);
instance.second->self = std::weak_ptr<Client>(instance.second);
if (cb)
(*cb)(instance.second);
return instance.second;
}
void Clients::broadcast(const std::string &msg, std::optional<std::weak_ptr<Client>> self) {
broadcast(SData{msg, self, false});
}
void Clients::broadcast(const SData &msg) {
for (const auto &[thread, client] : m_vClients) {
if (!client)
continue;
client->write(msg.msg);
}
m_vDatas.push_back(msg);
}
bool Clients::nameExists(const std::string &name) {
auto it = std::ranges::find_if(m_vClients, [&name](const auto &s) { return s.second->getName() == name; });
if (it != m_vClients.end()) {
if (!it->second->isValid()) {
kick(std::weak_ptr<Client>(it->second), true, "Connection lost");
return false;
}
return true;
}
return false;
}
SP<Client> Clients::getByName(const std::string &name) const {
auto it = std::ranges::find_if(m_vClients, [&name](const auto &s) { return s.second->getName() == name; });
return it != m_vClients.end() ? it->second : nullptr;
}
SP<Client> Clients::getByIp(const std::string &ip) const {
auto it = std::ranges::find_if(m_vClients, [&ip](const auto &s) { return s.second->getIp() == ip; });
return it != m_vClients.end() ? it->second : nullptr;
}
std::vector<SP<Client>> Clients::getClients() const {
return m_vClients | std::views::transform([](const auto &s) { return s.second; }) | std::ranges::to<std::vector>();
}
std::vector<SData> Clients::getDatas() const {
return m_vDatas;
}
void Clients::kick(WP<Client> clientWeak, const bool kill, const std::string &reason) {
auto client = clientWeak.lock();
if (!client)
return;
for (auto it = m_vClients.begin(); it != m_vClients.end(); ++it) {
if (it->second == client) {
if (client && !client->getName().empty())
// this only exist when the client is registered
// not sure why the second is null, but m_name definately is since it's setted during register
// but we don't need to notify people if the client didn't even "join"/register anyways
broadcast(std::format("{} has left the chat", client->getName()), clientWeak);
if (!reason.empty())
client->write(reason);
const auto native_handle = it->first.native_handle();
if (it->first.joinable())
it->first.detach(); // .detach the thread since it's removing itself
it->second.reset();
m_vClients.erase(it);
if (kill && native_handle != 0)
// cancel(terminal/kill) the thread if it doesn't exit on its own
// pthread_cancel cuz it's the safest https://stackoverflow.com/a/3438576
// need a condition because it might crash if the thread is already dead
pthread_cancel(native_handle);
return;
}
}
}
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