From 375799fa79d1af76f33299acc20a11a167a021f8 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Thu, 17 Aug 2023 12:32:50 +0200
Subject: project: restructure libraries and build env

---
 source/lib/control/src/commander.cpp | 79 ++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 source/lib/control/src/commander.cpp

(limited to 'source/lib/control/src/commander.cpp')

diff --git a/source/lib/control/src/commander.cpp b/source/lib/control/src/commander.cpp
new file mode 100644
index 0000000..3db2c59
--- /dev/null
+++ b/source/lib/control/src/commander.cpp
@@ -0,0 +1,79 @@
+#include "wanda/control/commander.hpp"
+
+#include "wanda/proto/message.hpp"
+#include "wanda/proto/version.hpp"
+#include "wanda/std_ext/optional.hpp"
+#include "wanda/system/logging.hpp"
+
+#include <spdlog/fmt/ostr.h>
+
+namespace wanda::control
+{
+  commander::commander(asio::io_service & service, std::filesystem::path socket, listener & listener)
+      : m_service{service}
+      , m_endpoint{socket.string()}
+      , m_socket{service}
+      , m_listener{listener}
+  {
+  }
+
+  void commander::start()
+  {
+    m_socket.async_connect(m_endpoint, [&](auto const & error) {
+      if (error)
+      {
+        system::get_logger()->error("error while connecting to control interface: '{}'", error.message());
+      }
+      else
+      {
+        system::get_logger()->info("establishing connection to wanda deamon");
+        m_connection = wanda::control::make_connection(std::move(m_socket));
+        m_connection->add(this);
+        m_connection->start();
+        m_connection->send({proto::message_source_controller, proto::message_command_hello, proto::version});
+      }
+    });
+  }
+
+  void commander::stop()
+  {
+    system::get_logger()->info("closing control connection");
+    m_connection->close();
+  }
+
+  void commander::send(proto::command command)
+  {
+    using namespace wanda::std_ext;
+
+    if (!m_connection || m_connection->current_state() != connection::state::established)
+    {
+      system::get_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); }) ||
+        [&] { system::get_logger()->error("unknown command"); };
+  }
+
+  void commander::on_error(connection::pointer connection, std::error_code error)
+  {
+    system::get_logger()->error("control interface communication error: '{}'", error.message());
+  }
+
+  void commander::on_received(connection::pointer connection, proto::message message)
+  {
+    if (auto state = connection->current_state(); message.command == "HELLO" && state == connection::state::fresh)
+    {
+      system::get_logger()->info("connection to wanda deamon successfully established");
+      connection->update(connection::state::established);
+      m_listener.on_connected(*this);
+    }
+    else
+    {
+      system::get_logger()->error("unexpected message: '{}'", message);
+      m_listener.on_error(*this, "unexpected message '" + static_cast<std::string>(message) + '\'');
+    }
+  }
+
+}  // namespace wanda::control
\ No newline at end of file
-- 
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