#include <gtk/gtk.h>
#include <gio/gio.h>


static GListModel *create_desktop_list(void)
{
    GListStore *store;
    GDir *dir;
    const gchar *file_name;
    GFile *file;

    const gchar* desktop_path = g_get_user_special_dir(G_USER_DIRECTORY_DESKTOP);
    printf("n %s\n", desktop_path);

    store = g_list_store_new(G_TYPE_FILE);

    dir = g_dir_open(desktop_path, 0, 0);
    
    while ( (file_name = g_dir_read_name(dir)) ) {
        printf("g %s\n", file_name);
        file = g_file_new_for_path(g_strconcat(desktop_path, "/", file_name, NULL));
        g_list_store_append(store, file);
    }

    return G_LIST_MODEL(store);
}

static void setup_listitem_cb(GtkListItemFactory *factory, GtkListItem *list_item)
{
    GtkWidget *box;
    GtkWidget *image;
    GtkWidget *label;

    box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
    image = gtk_image_new();
    gtk_image_set_icon_size(GTK_IMAGE(image), GTK_ICON_SIZE_LARGE);
    gtk_box_append(GTK_BOX(box), image);
    label = gtk_label_new("");
    gtk_box_append(GTK_BOX(box), label);
    gtk_list_item_set_child(list_item, box);
}

static void bind_listitem_cb(GtkListItemFactory *factory, GtkListItem *list_item)
{
    GtkWidget *image;
    GtkWidget *label;
    GFile *file;
    GFileInfo *file_info;

    image = gtk_widget_get_first_child(gtk_list_item_get_child(list_item));
    label = gtk_widget_get_next_sibling(image);
    file = gtk_list_item_get_item(list_item);
    file_info = g_file_query_info(file, "standard::*,ownser::user", 0, 0, 0);

    gtk_image_set_from_gicon(GTK_IMAGE(image), g_file_info_get_icon(file_info));
    gtk_label_set_label(GTK_LABEL(label), g_file_info_get_display_name(file_info));
}

static void activate_cb(GtkGridView  *list, guint position, gpointer unused)
{
    GdkAppLaunchContext *context;
    GFile *file;
    char* file_uri = g_file_get_uri(file);

    file = g_list_model_get_item(G_LIST_MODEL(gtk_grid_view_get_model(list)), position);
    printf("uri %s\n", file_uri);

    g_app_info_launch_default_for_uri(file_uri, 0, 0);

    g_object_unref(file);
}

static void activate (GtkApplication* app, gpointer user_data)
{
    GtkWidget *window, *gridview;
    GListModel *model;
    GtkListItemFactory *factory;

    window = gtk_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW (window), "Window");
    gtk_window_set_default_size(GTK_WINDOW (window), 200, 200);

    factory = gtk_signal_list_item_factory_new();
    g_signal_connect(factory, "setup", G_CALLBACK(setup_listitem_cb), NULL);
    g_signal_connect(factory, "bind", G_CALLBACK(bind_listitem_cb), NULL);

    model = create_desktop_list();

    gridview = gtk_grid_view_new(GTK_SELECTION_MODEL(gtk_single_selection_new(model)), factory);

    g_signal_connect(gridview, "activate", G_CALLBACK(activate_cb), NULL);

    gtk_window_set_child(GTK_WINDOW (window), gridview);

    gtk_window_present(GTK_WINDOW (window));
}

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

    app = gtk_application_new("org.gtk.example", 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;
}