#include <gtk/gtk.h>

// from the example
static void
set_file (GFile    *file,
          gpointer  data)
{
  char *name;

  if (!file)
    {
      //gtk_widget_set_sensitive (app_picker, FALSE);
      //g_object_set_data (G_OBJECT (app_picker), "file", NULL);
      return;
    }

  name = g_file_get_basename (file);
  gtk_label_set_label (GTK_LABEL (data), name);
  g_free (name);

  //gtk_widget_set_sensitive (app_picker, TRUE);
  //g_object_set_data_full (G_OBJECT (app_picker), "file", g_object_ref (file), g_object_unref);
}

static void
file_opened (GObject *source,
             GAsyncResult *result,
             void *data)
{
  GFile *file;
  GError *error = NULL;

  file = gtk_file_dialog_open_finish (GTK_FILE_DIALOG (source), result, &error);

  if (!file)
    {
      g_print ("%s\n", error->message);
      g_error_free (error);
    }

  set_file (file, data);
}

static gboolean
abort_mission (gpointer data)
{
  GCancellable *cancellable = data;

  g_cancellable_cancel (cancellable);

  return G_SOURCE_REMOVE;
}

static void
open_file (GtkButton *picker,
           GtkLabel  *label)
{
  GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (picker)));
  GtkFileDialog *dialog;
  GCancellable *cancellable;

  dialog = gtk_file_dialog_new ();

  cancellable = g_cancellable_new ();

  g_timeout_add_seconds_full (G_PRIORITY_DEFAULT,
                              20,
                              abort_mission, g_object_ref (cancellable), g_object_unref);
	gtk_file_dialog_set_title (dialog, "Select Sheet Music File");
	// Filters for the different types that are supported.
	//GListStore *filters;
	//(abc, darms, humdrum, pae)
	// Only allow mei,musicxml,xml
	GtkFileFilter *filter;
	filter = gtk_file_filter_new();
	gtk_file_filter_set_name (filter, "MEI, MusicXML");
	gtk_file_filter_add_mime_type (filter, "application/xml");
	gtk_file_filter_add_mime_type (filter, "text/xml");
	//g_list_store_append (filters, filter);
	gtk_file_dialog_set_default_filter (dialog, filter);
	//g_object_unref (filter);

	//gtk_file_dialog_set_filters (dialog, G_LIST_MODEL (filters));
	//g_object_unref (filters);


  gtk_file_dialog_open (dialog, parent, cancellable, file_opened, label);

  g_object_unref (cancellable);
  g_object_unref (dialog);
}

static void activate (GtkApplication* app, gpointer user_data) {
	GtkWidget *window;
	GtkWidget *header;
	GtkWidget *image;
	GtkWidget *button;

	// Window
	window = gtk_application_window_new (app);
	gtk_window_set_title (GTK_WINDOW (window), "SheMuVi");
	gtk_window_set_default_size (GTK_WINDOW (window), 400, 600);
	gtk_widget_set_visible (window, TRUE);
	// Header
	header = gtk_header_bar_new();
	button = gtk_button_new_from_icon_name ("document-open-symbolic");
	gtk_widget_set_tooltip_text (button, "Load file");
	g_signal_connect (button, "clicked", G_CALLBACK (open_file), NULL);
	gtk_header_bar_pack_start (GTK_HEADER_BAR (header), button);
	gtk_window_set_titlebar (GTK_WINDOW (window), header);
	// Image
	image = gtk_image_new_from_file ("./when-i-survey-the-wondrous-cross-watts.svg");
	gtk_window_set_child (GTK_WINDOW (window), image);
}

int main (int argc, char **argv) {
	GtkApplication *app;
	int status;

	app = gtk_application_new ("com.zachdecook.shemuvi", G_APPLICATION_DEFAULT_FLAGS);
	g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
	status = g_application_run (G_APPLICATION (app), argc, argv);
	g_object_unref (app);

	return status;
}