wanda: restructure source layoutHEADdevelop

8 files changed, 437 insertions, 0 deletions

diff --git a/source/apps/CMakeLists.txt b/source/apps/CMakeLists.txt
new file mode 100644
index 0000000..2da5537
--- /dev/null
+++ b/source/apps/CMakeLists.txt
@@ -0,0 +1,54 @@
+include("CheckIPOSupported")
+
+check_ipo_supported(RESULT "WANDA_IPO_SUPPORTED")
+
+find_package("lyra" REQUIRED)
+
+add_library("wandac-components" OBJECT
+    "src/wandac/cli.cpp"
+    "src/wandac/listener.cpp"
+)
+
+target_link_libraries("wandac-components" PUBLIC
+    "wanda"
+    "bfg::lyra"
+)
+
+target_include_directories("wandac-components" PUBLIC "include")
+
+add_executable("wandac"
+    "src/wandac/main.cpp"
+)
+
+target_link_libraries("wandac" PRIVATE
+    "wandac-components"
+)
+
+add_executable("wandac-tests"
+    "tests/wandac/cli.cpp"
+)
+
+target_link_libraries("wandac-tests" PRIVATE
+    "wandac-components"
+    "Catch2::Catch2WithMain"
+)
+
+catch_discover_tests("wandac-tests")
+
+add_executable("wandad"
+    "src/wandad/main.cpp"
+)
+
+target_link_libraries("wandad" PRIVATE
+    "wanda"
+    "bfg::lyra"
+)
+
+set_target_properties("wandac" "wandad" PROPERTIES
+    INTERPROCEDURAL_OPTIMIZATION ${WANDA_IPO_SUPPORTED}
+)
+
+install(TARGETS
+    "wandac"
+    "wandad"
+)
diff --git a/source/apps/include/wanda/wandac/cli.hpp b/source/apps/include/wanda/wandac/cli.hpp
new file mode 100644
index 0000000..c04b138
--- /dev/null
+++ b/source/apps/include/wanda/wandac/cli.hpp
@@ -0,0 +1,27 @@
+#ifndef WANDA_APP_WANDAC_CLI_HPP
+#define WANDA_APP_WANDAC_CLI_HPP
+
+#include <lyra/args.hpp>
+#include <lyra/cli_parser.hpp>
+
+#include <iosfwd>
+#include <string>
+
+namespace wandac
+{
+
+  struct cli
+  {
+    auto parse(lyra::args arguments, std::ostream & error_stream) -> bool;
+    auto print_usage(std::ostream & output_stream) -> void;
+
+    std::string command{};
+    bool help{};
+
+  private:
+    lyra::cli_parser parser{};
+  };
+
+}  // namespace wandac
+
+#endif
\ No newline at end of file
diff --git a/source/apps/include/wanda/wandac/listener.hpp b/source/apps/include/wanda/wandac/listener.hpp
new file mode 100644
index 0000000..28b0cfc
--- /dev/null
+++ b/source/apps/include/wanda/wandac/listener.hpp
@@ -0,0 +1,26 @@
+#ifndef WANDA_APP_WANDAC_LISTENER_HPP
+#define WANDA_APP_WANDAC_LISTENER_HPP
+
+#include "wanda/wandac/cli.hpp"
+
+#include <wanda/control/commander.hpp>
+
+#include <boost/asio/io_context.hpp>
+
+namespace wandac
+{
+
+  struct listener : wanda::control::commander::listener
+  {
+    listener(wandac::cli const & cli, boost::asio::io_context & service);
+
+    auto on_connected(wanda::control::commander & commander) -> void override ;
+
+  private:
+    wandac::cli const & m_cli;
+    boost::asio::io_context & m_service;
+  };
+
+}  // namespace wandac
+
+#endif
\ No newline at end of file
diff --git a/source/apps/src/wandac/cli.cpp b/source/apps/src/wandac/cli.cpp
new file mode 100644
index 0000000..6be1e18
--- /dev/null
+++ b/source/apps/src/wandac/cli.cpp
@@ -0,0 +1,30 @@
+#include "wanda/wandac/cli.hpp"
+
+#include <lyra/arg.hpp>
+#include <lyra/help.hpp>
+
+#include <ostream>
+
+namespace wandac
+{
+
+  auto cli::parse(lyra::args arguments, std::ostream & error_stream) -> bool
+  {
+    parser |=  //
+        lyra::help(help) |  //
+        lyra::arg{command, "command"}("The command to send to the deamon").required();
+
+    auto result = parser.parse(arguments);
+
+    if (!result)
+    {
+      error_stream << "Error while processing command line arguments: " << result.message() << '\n' << parser << '\n';
+      return false;
+    }
+
+    return true;
+  }
+
+  auto cli::print_usage(std::ostream & output_stream) -> void { output_stream << parser << '\n'; }
+
+}  // namespace wandac
diff --git a/source/apps/src/wandac/listener.cpp b/source/apps/src/wandac/listener.cpp
new file mode 100644
index 0000000..29ccace
--- /dev/null
+++ b/source/apps/src/wandac/listener.cpp
@@ -0,0 +1,29 @@
+#include "wanda/wandac/listener.hpp"
+
+#include "wanda/wandac/cli.hpp"
+
+#include <wanda/control/commander.hpp>
+#include <wanda/proto/command.hpp>
+
+#include <boost/asio/io_context.hpp>
+
+namespace wandac
+{
+
+  listener::listener(wandac::cli const & cli, boost::asio::io_context & service)
+      : m_cli{cli}
+      , m_service{service}
+  {
+  }
+
+  auto listener::on_connected(wanda::control::commander & commander) -> void
+  {
+    if (m_cli.command == "change")
+    {
+      commander.send(wanda::proto::make_change_command());
+
+      post(m_service, [&] { commander.stop(); });
+    }
+  }
+
+}  // namespace wandac
diff --git a/source/apps/src/wandac/main.cpp b/source/apps/src/wandac/main.cpp
new file mode 100644
index 0000000..1533a62
--- /dev/null
+++ b/source/apps/src/wandac/main.cpp
@@ -0,0 +1,43 @@
+#include "wanda/wandac/cli.hpp"
+#include "wanda/wandac/listener.hpp"
+
+#include <wanda/control/commander.hpp>
+#include <wanda/system/environment.hpp>
+#include <wanda/system/logging.hpp>
+#include <wanda/system/xdg.hpp>
+
+#include <boost/asio/io_context.hpp>
+#include <spdlog/sinks/stdout_color_sinks.h>
+
+#include <cstdlib>
+#include <filesystem>
+#include <iostream>
+
+int main(int argc, char const * const * argv)
+{
+  auto cli = wandac::cli{};
+  if (!cli.parse({argc, argv}, std::cerr))
+  {
+    return EXIT_FAILURE;
+  }
+  else if (cli.help)
+  {
+    cli.print_usage(std::cout);
+    return EXIT_SUCCESS;
+  }
+
+  wanda::system::initialize_logger(std::make_shared<spdlog::sinks::stderr_color_sink_st>());
+
+  auto environment = wanda::system::environment{};
+  auto runtime_dir = wanda::system::xdg_path_for(wanda::system::xdg_directory::runtime_dir, environment);
+  auto interface = runtime_dir / ".wanda_interface";
+  auto service = boost::asio::io_context{};
+  auto listener = wandac::listener{cli, service};
+
+  auto commander = wanda::control::commander{service, interface, listener};
+
+  wanda::system::get_logger()->info("trying to connect to wanda control interface on '{}'", interface.native());
+  commander.start();
+
+  service.run();
+}
diff --git a/source/apps/src/wandad/main.cpp b/source/apps/src/wandad/main.cpp
new file mode 100644
index 0000000..9feac82
--- /dev/null
+++ b/source/apps/src/wandad/main.cpp
@@ -0,0 +1,148 @@
+#include <wanda/control/interface.hpp>
+#include <wanda/proto/command.hpp>
+#include <wanda/std_ext/optional.hpp>
+#include <wanda/system/environment.hpp>
+#include <wanda/system/filesystem.hpp>
+#include <wanda/system/logging.hpp>
+#include <wanda/system/setting.hpp>
+#include <wanda/system/wallpaper.hpp>
+#include <wanda/system/xdg.hpp>
+
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <lyra/lyra.hpp>
+#include <spdlog/sinks/stdout_color_sinks.h>
+
+#include <csignal>
+#include <cstdlib>
+#include <filesystem>
+#include <iostream>
+#include <set>
+#include <string>
+
+namespace
+{
+  constexpr auto image_filter = [](auto const & path) {
+    static auto const extensions = std::set<std::filesystem::path>{
+        std::filesystem::path{".jpg"},
+        std::filesystem::path{".png"},
+    };
+
+    if (!std::filesystem::is_regular_file(path))
+    {
+      return false;
+    }
+
+    return extensions.find(path.extension()) != extensions.cend();
+  };
+
+  struct cli
+  {
+    std::string wallpaper_directory{};
+    bool help{};
+
+    lyra::cli_parser parser{};
+
+    auto parse(int argc, char const * const * argv, std::ostream & error)
+    {
+      parser |=  //
+          lyra::help(help) |  //
+          lyra::arg{wallpaper_directory, "directory"}("The wallpaper source directory").required();
+
+      auto result = parser.parse({argc, argv});
+
+      if (!result)
+      {
+        error << "Error while processing command line arguments: " << result.message() << '\n' << parser << '\n';
+        return false;
+      }
+
+      return true;
+    }
+  };
+
+  struct listener : wanda::control::interface::listener
+  {
+    listener(std::vector<std::filesystem::path> const & wallpapers)
+        : m_wallpapers{wallpapers}
+    {
+    }
+
+    void on_received(wanda::control::interface & interface, wanda::proto::command command) override
+    {
+      switch (command.id)
+      {
+        case wanda::proto::command_id::change: {
+          auto wallpaper = wanda::system::random_pick(m_wallpapers);
+          wanda::system::get_logger()->info("changing wallpaper to '{}'", wallpaper.native());
+          wanda::system::set_wallpaper(wallpaper);
+          break;
+        }
+        default:
+          wanda::system::get_logger()->error("received unknown command '{}'", static_cast<int>(command.id));
+      }
+    }
+
+  private:
+    std::vector<std::filesystem::path> const & m_wallpapers;
+  };
+
+}  // namespace
+
+int main(int argc, char const * const * argv)
+{
+  using namespace wanda::std_ext;
+
+  auto cli = ::cli{};
+  if (!cli.parse(argc, argv, std::cerr))
+  {
+    return EXIT_FAILURE;
+  }
+  else if (cli.help)
+  {
+    std::cout << cli.parser << '\n';
+    return EXIT_SUCCESS;
+  }
+
+  wanda::system::initialize_logger(std::make_shared<spdlog::sinks::stdout_color_sink_st>());
+  wanda::system::get_logger()->info("wanda is starting up");
+
+  with(wanda::system::scan({cli.wallpaper_directory}, image_filter),
+       [&](auto const & list) {
+         auto service = boost::asio::io_context{};
+         auto socket_path =
+             wanda::system::xdg_path_for(wanda::system::xdg_directory::runtime_dir, wanda::system::environment{}) /
+             ".wanda_interface";
+
+         wanda::system::get_logger()->info("starting control interface on '{}'", socket_path.native());
+         auto listener = ::listener{list};
+         auto interface = wanda::control::make_interface(service, socket_path, listener);
+
+         if (!interface)
+         {
+           wanda::system::get_logger()->error("failed to start control interface");
+           return;
+         }
+
+         if (interface->start())
+         {
+           return;
+         }
+
+         auto signals = boost::asio::signal_set{service, SIGINT, SIGTERM};
+         signals.async_wait([&](auto const & error, auto const signal) {
+           if (!error)
+           {
+             wanda::system::get_logger()->info("Received signal {}. terminating...", signal);
+             interface->shutdown();
+             service.stop();
+           }
+         });
+
+         auto wallpaper = wanda::system::random_pick(list);
+         wanda::system::set_wallpaper(wallpaper);
+
+         service.run();
+       }) ||
+      [&] { wanda::system::get_logger()->error("wallpaper directory does not exist"); };
+}
diff --git a/source/apps/tests/wandac/cli.cpp b/source/apps/tests/wandac/cli.cpp
new file mode 100644
index 0000000..57d2a8f
--- /dev/null
+++ b/source/apps/tests/wandac/cli.cpp
@@ -0,0 +1,80 @@
+#include "wanda/wandac/cli.hpp"
+
+#include <catch2/catch_all.hpp>
+#include <catch2/catch_test_macros.hpp>
+#include <lyra/args.hpp>
+
+#include <sstream>
+#include <string>
+
+using namespace std::string_literals;
+
+namespace wanda::tests::app::wandac
+{
+
+  template<typename ...Ts>
+  auto make_argument_list(Ts const & ... args) -> lyra::args
+  {
+    return {"wanda"s, static_cast<std::string>(args)...};
+  }
+
+  SCENARIO("Empty argument list parsing", "[app][client][cli]")
+  {
+    GIVEN("A fresh cli instance and error stream")
+    {
+      auto cli = ::wandac::cli{};
+      auto error_stream = std::ostringstream{};
+
+      WHEN("invoking parse without any program arguments")
+      {
+        auto result = cli.parse(make_argument_list(), error_stream);
+
+        THEN("the return value is false") { REQUIRE_FALSE(result); }
+        THEN("the error stream is not empty") { REQUIRE_FALSE(error_stream.view().empty()); }
+        THEN("the help flag is not set") { REQUIRE_FALSE(cli.help); }
+        THEN("the command is empty") { REQUIRE(cli.command.empty()); }
+      }
+    }
+  }
+
+  SCENARIO("Valid argument list parsing", "[app][client][cli]")
+  {
+    GIVEN("A fresh cli instance and error stream")
+    {
+      auto cli = ::wandac::cli{};
+      auto error_stream = std::ostringstream{};
+
+      AND_GIVEN("'-h' in the argument list")
+      {
+        auto argument_list = make_argument_list("-h");
+
+        WHEN("invoking parse without additional arguments")
+        {
+          auto result = cli.parse(argument_list, error_stream);
+
+          THEN("the return value is true") { REQUIRE(result); }
+          THEN("the error stream is empty") { REQUIRE(error_stream.view().empty()); }
+          THEN("the help flag is set") { REQUIRE(cli.help); }
+          THEN("the command is empty") { REQUIRE(cli.command.empty()); }
+        }
+      }
+
+      AND_GIVEN("'change' in the argument list")
+      {
+        auto argument_list = make_argument_list("change");
+
+        WHEN("invoking parse without additional arguments")
+        {
+          auto result = cli.parse(argument_list, error_stream);
+
+          THEN("the return valis is true") { REQUIRE(result); }
+          THEN("the error stream is empty") { REQUIRE(error_stream.view().empty()); }
+          THEN("the help flag is not set") { REQUIRE_FALSE(cli.help); }
+          THEN("the command is not empty") { REQUIRE_FALSE(cli.command.empty()); }
+          THEN("the command is 'change'") { REQUIRE(cli.command == "change"); }
+        }
+      }
+    }
+  }
+
+}  // namespace wanda::tests::app::wandac