#include "my_application.h"

#include <flutter_linux/flutter_linux.h>
#include "flutter/generated_plugin_registrant.h"
#include "mpv/mpv_plugin.h"

struct _MyApplication {
  GtkApplication parent_instance;
  char** dart_entrypoint_arguments;
  FlView* flutter_view;
};

G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)

// Implements GApplication::activate.
static void my_application_activate(GApplication* application) {
  MyApplication* self = MY_APPLICATION(application);
  GtkWindow* window =
      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));

  // Default to traditional titlebar. Set GTK_CSD=1 to use a header bar.
  gboolean use_header_bar = FALSE;
  const gchar* gtk_csd = g_getenv("GTK_CSD");
  if (gtk_csd != nullptr && g_strcmp0(gtk_csd, "1") == 0) {
    use_header_bar = TRUE;
  }
  if (use_header_bar) {
    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
    gtk_widget_show(GTK_WIDGET(header_bar));
    gtk_header_bar_set_title(header_bar, "Plezy");
    gtk_header_bar_set_show_close_button(header_bar, TRUE);
    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
  } else {
    gtk_window_set_title(window, "Plezy");
  }

  gtk_window_set_default_size(window, 1280, 720);

  // Create the Flutter view (opaque — no overlay needed).
  g_autoptr(FlDartProject) project = fl_dart_project_new();
  fl_dart_project_set_dart_entrypoint_arguments(project,
                                                self->dart_entrypoint_arguments);

  self->flutter_view = fl_view_new(project);
  gtk_widget_show(GTK_WIDGET(self->flutter_view));
  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(self->flutter_view));

  // Register Flutter plugins.
  fl_register_plugins(FL_PLUGIN_REGISTRY(self->flutter_view));

  // Register the MPV plugin (uses FlTextureGL — no overlay/GtkGLArea needed).
  FlPluginRegistrar* registrar =
      fl_plugin_registry_get_registrar_for_plugin(FL_PLUGIN_REGISTRY(self->flutter_view),
                                                  "MpvPlugin");
  mpv_plugin_register_with_registrar(registrar);

  gtk_widget_show(GTK_WIDGET(window));
  gtk_widget_grab_focus(GTK_WIDGET(self->flutter_view));
}

// Implements GApplication::local_command_line.
static gboolean my_application_local_command_line(GApplication* application,
                                                  gchar*** arguments,
                                                  int* exit_status) {
  MyApplication* self = MY_APPLICATION(application);
  // Strip out the first argument as it is the binary name.
  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);

  g_autoptr(GError) error = nullptr;
  if (!g_application_register(application, nullptr, &error)) {
    g_warning("Failed to register: %s", error->message);
    *exit_status = 1;
    return TRUE;
  }

  g_application_activate(application);
  *exit_status = 0;

  return TRUE;
}

// Implements GApplication::startup.
static void my_application_startup(GApplication* application) {
  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
}

// Implements GApplication::shutdown.
static void my_application_shutdown(GApplication* application) {
  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
}

// Implements GObject::dispose.
static void my_application_dispose(GObject* object) {
  MyApplication* self = MY_APPLICATION(object);
  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
}

static void my_application_class_init(MyApplicationClass* klass) {
  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
  G_APPLICATION_CLASS(klass)->local_command_line =
      my_application_local_command_line;
  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
}

static void my_application_init(MyApplication* self) {
  self->flutter_view = nullptr;
}

MyApplication* my_application_new() {
  g_set_prgname(APPLICATION_ID);

  return MY_APPLICATION(g_object_new(my_application_get_type(),
                                     "application-id", APPLICATION_ID,
                                     "flags", G_APPLICATION_NON_UNIQUE,
                                     nullptr));
}