#include <stdio.h>
#include <gtk-4.0/gtk/gtk.h>

#include "tree.h"
#include "contain.h"
#include "texts.h"
#include "in_depth.h"
#include "parsing.h"
#include "graph_area.h"

/******************************************************************************/
/*                M A I N   W I N D O W   A C T I V A T I O N                 */
/******************************************************************************/
void ui_main_window (GtkApplication *self, gpointer user_data)
{
  GtkWindow *main_window = GTK_WINDOW (gtk_application_window_new (self));
  window_header_bar (main_window,
                     "E coli   (with permission from David S. Goodsell, 2009)");
  two_notebooks_in_two_panes (main_window);
  gtk_window_present (GTK_WINDOW (main_window));
}

void ui_send_internal_notification(const char *message)
{
  /*  Ignored  (2024-06-06)  because I don't know how to get "main_window" easily

    if (window->toast_revealer == NULL) {
        g_printerr("Can't find self->toast_overlay !\n");
        return;
    }

    if (window->toast_text == NULL) {
        g_printerr("Can't find self->toast_overlay !\n");
        return;
    }

    gtk_label_set_label(window->toast_text, message);
    gtk_revealer_set_reveal_child(window->toast_revealer, true);
  */
    g_printerr("%s\n", message);
}

/******************************************************************************/
/*                                T R E E                                     */
/******************************************************************************/
void on_user_tree_expander_toggled (GtkExpander *expander, gpointer user_data)
{
  GtkTreeListRow *row = GTK_TREE_LIST_ROW (user_data);
  gboolean is_expanded = gtk_tree_list_row_get_expanded(row);
  gtk_tree_list_row_set_expanded (row, !is_expanded);
}

void on_bind_user_tree_factory (GtkSignalListItemFactory *factory, GObject* object, gpointer user_data)
{
  GtkListItem *list_item = GTK_LIST_ITEM (object); assert (list_item);
  GtkTreeListRow *row = gtk_list_item_get_item (list_item); assert (row); // if (row != NULL) {...} ?
  const gchar *text = gtk_string_object_get_string (GTK_STRING_OBJECT (gtk_tree_list_row_get_item (row)));
  GtkWidget *expander = gtk_list_item_get_child (list_item);
  gtk_expander_set_label (GTK_EXPANDER (expander), text);
  g_signal_handlers_disconnect_by_func(expander, G_CALLBACK (on_user_tree_expander_toggled), row);
  g_signal_connect(expander, "activate", G_CALLBACK (on_user_tree_expander_toggled), row);
  gtk_widget_set_margin_start(expander, gtk_tree_list_row_get_depth(row) * 20);
}

/******************************************************************************/
/*                              G L  A R E A                                  */
/******************************************************************************/
gboolean on_glarea_render(GtkGLArea *area, GdkGLContext *context)
{
    // Check if the widget is a glarea
    if(gtk_gl_area_get_error(area) != NULL) {
//////////////////////////        ui_send_internal_notification("An OpenGL error occured !");
        return false;
    }

//////////////////////////    if (ui_render_stack(gtk_widget_get_parent(GTK_WIDGET(area))) == false) {
//////////////////////////        ui_send_internal_notification("Failed to render corresponding graphic stack !");
//////////////////////////        return false;
//////////////////////////    }

    return true;
}


/* We need to set up our state when we realize the GtkGLArea widget */
void on_glarea_realize(GtkWidget *widget)
{
    GError *internal_error = NULL;

    // Make the GL context current to be able to call the GL API
    gtk_gl_area_make_current(GTK_GL_AREA(widget));

    // Check if the widget is a glarea
    if(gtk_gl_area_get_error(GTK_GL_AREA(widget)) != NULL) {
        ui_send_internal_notification("An OpenGL error occured !");
        return;
    }

    // Link graphical stack to widget
    if (ui_init_graphic_stack(gtk_widget_get_parent(widget),
                              internal_error) == false) {
        ui_send_internal_notification(
            "Failed to link the graphic stack to widgets !");
        return;
    }

    gtk_gl_area_set_auto_render(GTK_GL_AREA(widget), true);
}

/* We should tear down the state when unrealizing */
void on_glarea_unrealize(GtkWidget *widget)
{
    GError *internal_error = NULL;

    // Make the GL context current to be able to call the GL API
    gtk_gl_area_make_current(GTK_GL_AREA(widget));

    // Check if the widget is a glarea
    if(gtk_gl_area_get_error(GTK_GL_AREA(widget)) != NULL) {
        ui_send_internal_notification("An OpenGL error occured !");
        return;
    }

    // Destroy graphic stack
    if (ui_shutdown_graphic_stack(gtk_widget_get_parent(widget),
                                  internal_error) == false) {
        ui_send_internal_notification(
            "Failed to shutdown the graphic stack !");
        return;
    }
}

/******************************************************************************/
/*                             B U T T O N S                                  */
/******************************************************************************/
void ui_toggle_exec_edit (GtkWidget *btt_exec_xor_edit, GtkWidget *btt_run_stop_model_exec)
{
  if (get_exec_edit_mode()) {
    gtk_button_set_icon_name (GTK_BUTTON (btt_exec_xor_edit), "system-run-symbolic");
    gtk_button_set_icon_name (GTK_BUTTON (btt_run_stop_model_exec), "media-playback-start-symbolic");
    gtk_widget_set_sensitive (GTK_WIDGET (btt_run_stop_model_exec), TRUE);
    set_exec_edit_mode (0);
  } else {
    gtk_button_set_icon_name (GTK_BUTTON (btt_exec_xor_edit), "document-edit-symbolic");
    gtk_button_set_icon_name (GTK_BUTTON (btt_exec_xor_edit), "text-editor-symbolic"); // I hesitate
    set_exec_edit_mode (1);
    //   Ici, il faudra prévenir l'utilisateur par une pop-up window :   TODO   (sauvegarde automatique sinon)
    //   S'il ne prend pas la main, les données de la simulation en cours risquent d'être perdues
    gtk_button_set_icon_name (GTK_BUTTON (btt_run_stop_model_exec), "media-playback-pause-symbolic");
    gtk_widget_set_sensitive (GTK_WIDGET (btt_run_stop_model_exec), FALSE);
    set_run_xor_stop_exec (0);
  }
}

void ui_toggle_model_exec (GtkWidget *btt_run_stop_model_exec, gpointer data)
{
  if (get_run_xor_stop_exec() && ! get_exec_edit_mode()) {
    gtk_button_set_icon_name (GTK_BUTTON (btt_run_stop_model_exec), "media-playback-start-symbolic");
    set_run_xor_stop_exec (0);
  } else {
    gtk_button_set_icon_name (GTK_BUTTON (btt_run_stop_model_exec), "media-playback-pause-symbolic");
    set_run_xor_stop_exec (1);
  }
}