wandad: implement command handler for change

1 files changed, 38 insertions, 6 deletions

diff --git a/src/wandad.cpp b/src/wandad.cpp
index af2e3f2..6008b57 100644
--- a/src/wandad.cpp
+++ b/src/wandad.cpp
@@ -1,3 +1,4 @@
+#include "command.hpp"
 #include "control_interface.hpp"
 #include "environment.hpp"
 #include "filesystem.hpp"
@@ -32,6 +33,35 @@ constexpr auto image_filter = [](auto const &path) {
   return extensions.find(path.extension()) != extensions.cend();
 };
 
+struct listener : wanda::control_interface::listener
+{
+  listener(std::vector<std::filesystem::path> const &wallpapers, std::shared_ptr<spdlog::logger> logger)
+      : m_wallpapers{wallpapers},
+        m_logger{logger}
+  {
+  }
+
+  void on_received(wanda::control_interface &interface, wanda::command command) override
+  {
+    switch (command.id)
+    {
+    case wanda::command_id::change:
+    {
+      auto wallpaper = wanda::random_pick(m_wallpapers);
+      m_logger->info("changing wallpaper to '{}'", wallpaper.native());
+      wanda::set_wallpaper(wallpaper, m_logger);
+      break;
+    }
+    default:
+      m_logger->error("received unknown command '{}'", static_cast<int>(command.id));
+    }
+  }
+
+private:
+  std::vector<std::filesystem::path> const &m_wallpapers;
+  std::shared_ptr<spdlog::logger> m_logger;
+};
+
 } // namespace
 
 int main()
@@ -42,16 +72,14 @@ int main()
   log->info("wanda is starting up");
 
   with(wanda::scan({"/usr/share/backgrounds"}, image_filter), [&](auto const &list) {
-    auto wallpaper = wanda::random_pick(list);
-    wanda::set_wallpaper(wallpaper);
-
     auto service = asio::io_service{};
     auto socket_path = wanda::xdg_path_for(wanda::xdg_directory::runtime_dir, wanda::environment{}) / ".wanda_interface";
 
     log->info("starting control interface on '{}'", socket_path.native());
-    auto interface = wanda::make_interface(service, socket_path, log);
+    auto listener = ::listener{list, log};
+    auto interface = wanda::make_interface(service, socket_path, listener, log);
 
-    if(!interface)
+    if (!interface)
     {
       log->error("failed to start control interface");
       return;
@@ -71,6 +99,10 @@ int main()
       }
     });
 
+    auto wallpaper = wanda::random_pick(list);
+    wanda::set_wallpaper(wallpaper, log);
+
     service.run();
-  }) || [&] { log->error("wallpaper directory does not exist"); };
+  }) ||
+      [&] { log->error("wallpaper directory does not exist"); };
 }