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#include "commander.hpp"
#include "message.hpp"
#include "optional.hpp"
#include <spdlog/fmt/ostr.h>
namespace wanda
{
std::optional<message> commander::command::message() const
{
using namespace std::string_literals;
auto const command = [this] {
switch (id)
{
case command_id::change:
return "CHANGE"s;
default:
return ""s;
}
}();
auto argument_string = std::string{};
for(int index = 0ul; index < arguments.size(); ++index)
{
argument_string += (index) ? "," + arguments[index] : arguments[index];
}
if(command.empty())
{
return std::nullopt;
}
return wanda::message{"C", command, argument_string};
}
commander::commander(asio::io_service &service, std::filesystem::path socket, listener &listener, std::shared_ptr<spdlog::logger> logger)
: m_service{service},
m_endpoint{socket.string()},
m_socket{service},
m_listener{listener},
m_logger{logger}
{
}
void commander::start()
{
m_socket.async_connect(m_endpoint, [&](auto const &error) {
if (error)
{
m_logger->error("error while connecting to control interface: '{}'", error.message());
}
else
{
m_logger->info("establishing connection to wanda deamon");
m_connection = wanda::make_control_connection(std::move(m_socket));
m_connection->add(this);
m_connection->start();
m_connection->send({message_source_controller, message_command_hello, message_argument_hello});
}
});
}
void commander::send(command command)
{
using namespace wanda::std_ext;
if (!m_connection || m_connection->current_state() != control_connection::state::established)
{
m_logger->error("tried to send command without an established connection");
m_listener.on_error(*this, "tried to send command without an established connection");
return;
}
with(command.message(), [&](auto const & message){
m_connection->send(message);
}) || [&]{ m_logger->error("unknown command"); };
}
void commander::on_error(control_connection::pointer connection, std::error_code error)
{
m_logger->error("control interface communication error: '{}'", error.message());
}
void commander::on_received(wanda::control_connection::pointer connection, message message)
{
if (auto state = connection->current_state(); message.command == "HELLO" && state == control_connection::state::fresh)
{
m_logger->info("connection to wanda deamon successfully established");
connection->update(control_connection::state::established);
m_listener.on_connected(*this);
}
else
{
m_logger->error("unexpected message: '{}'", message);
m_listener.on_error(*this, "unexpected message '" + static_cast<std::string>(message) + '\'');
}
}
} // namespace wanda
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