
#include <glib/gi18n.h>
#include <glib/gprintf.h>
#include <stdlib.h>

#include <libbiji/libbiji.h>
#include <libgd/gd.h>

#include "bjb-app-menu.h"
#include "bjb-application.h"
#include "bjb-empty-results-box.h"
#include "bjb-window-base.h"
#include "bjb-main-toolbar.h"
#include "bjb-main-view.h"
#include "bjb-note-view.h"


#define BIJIBEN_MAIN_WIN_TITLE N_("Notes")
#define SAVE_GEOMETRY_ID_TIMEOUT 100 /* ms */

enum {
  PROP_0,
  PROP_NOTE,
  NUM_PROPERTIES
};

static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };


enum {
  BJB_WIN_BASE_VIEW_CHANGED,
  BJB_WIN_BASE_ACTIVATED,
  BJB_WIN_BASE_SIGNALS
};

static guint bjb_win_base_signals [BJB_WIN_BASE_SIGNALS] = { 0 };


struct _BjbWindowBase
{
  GtkApplicationWindow  parent_instance;

  BjbSettings          *settings;
  BjbController        *controller;
  gchar                *entry; // FIXME, remove this


  GtkWidget            *vbox;
  BjbMainToolbar       *main_toolbar;
  BjbSearchToolbar     *search_bar;


  GtkStack             *stack;
  BjbWindowViewType     current_view;
  BjbMainView          *view;
  BjbNoteView          *note_view;
  GtkWidget            *spinner;
  GtkWidget            *no_note;

  guint                save_geometry_id;

  /* when a note is opened */
  BijiNoteObj          *note;
  gboolean              detached; // detached note
};

/* Gobject */
G_DEFINE_TYPE (BjbWindowBase, bjb_window_base, GTK_TYPE_APPLICATION_WINDOW)

static void
bjb_window_base_finalize (GObject *object)
{
  BjbWindowBase *self = BJB_WINDOW_BASE (object);

  g_clear_object (&self->controller);

  G_OBJECT_CLASS (bjb_window_base_parent_class)->finalize (object);
}




static void
bjb_window_base_get_property (GObject  *object,
                              guint     property_id,
                              GValue   *value,
                              GParamSpec *pspec)
{
  BjbWindowBase *self = BJB_WINDOW_BASE (object);

  switch (property_id)
  {
  case PROP_NOTE:
    g_value_set_object (value, self->note);
    break;
  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    break;
  }
}


static void
bjb_window_base_set_property (GObject  *object,
                              guint     property_id,
                              const GValue *value,
                              GParamSpec *pspec)
{
  BjbWindowBase *self = BJB_WINDOW_BASE (object);

  switch (property_id)
  {
  case PROP_NOTE:
    self->note = g_value_get_object (value);
    break;
  default:
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    break;
  }
}



static gboolean
on_key_pressed_cb (GtkWidget *w, GdkEvent *event, gpointer user_data)
{
  BjbWindowBase *self = BJB_WINDOW_BASE (user_data);
  GdkModifierType modifiers;

  modifiers = gtk_accelerator_get_default_mod_mask ();

  /* First check for Alt <- to go back */
  if ((event->key.state & modifiers) == GDK_MOD1_MASK &&
      event->key.keyval == GDK_KEY_Left &&
      self->current_view == BJB_WINDOW_BASE_NOTE_VIEW)
  {
    BijiItemsGroup items;

    items = bjb_controller_get_group (self->controller);
    if (items == BIJI_LIVING_ITEMS)
      bjb_window_base_switch_to (self, BJB_WINDOW_BASE_MAIN_VIEW);

    else if (items == BIJI_ARCHIVED_ITEMS)
      bjb_window_base_switch_to (self, BJB_WINDOW_BASE_ARCHIVE_VIEW);

    return TRUE;
  }


  switch (event->key.keyval)
  {
    /* Help on F1 */
    case GDK_KEY_F1:
      help_activated (NULL, NULL, NULL);
      return TRUE;

    /* Reserve other func keys for window */
    case GDK_KEY_F2:
    case GDK_KEY_F3:
    case GDK_KEY_F4:
    case GDK_KEY_F5:
    case GDK_KEY_F6:
    case GDK_KEY_F7:
    case GDK_KEY_F8:
    case GDK_KEY_F9:
    case GDK_KEY_F10:
    case GDK_KEY_F11:
      return TRUE;

    default:
      return FALSE;
  }

  return FALSE;
}





/* Just disconnect to avoid crash, the finalize does the real
 * job */
static void
bjb_window_base_destroy (gpointer a, BjbWindowBase * self)
{
  bjb_main_view_disconnect_scrolled_window (self->view);
  bjb_controller_disconnect (self->controller);
}

static gboolean
bjb_application_window_configured (gpointer   user_data)
{
  BjbWindowBase *self;
  GSettings *settings;
  GVariant *variant;
  gint32 size[2];
  gint32 position[2];
  gboolean maximized;

  self = BJB_WINDOW_BASE (user_data);
  settings = G_SETTINGS (self->settings);

  self->save_geometry_id = 0;

  maximized = gtk_window_is_maximized (GTK_WINDOW (self));
  g_settings_set_boolean (settings, "window-maximized", maximized);

  if (maximized)
    return FALSE;

  gtk_window_get_size (GTK_WINDOW (self),
                       (gint *) &size[0],
                       (gint *) &size[1]);
  variant = g_variant_new_fixed_array (G_VARIANT_TYPE_INT32,
                                       size, 2,
                                       sizeof (size[0]));
  g_settings_set_value (settings, "window-size", variant);

  gtk_window_get_position (GTK_WINDOW (self),
                           (gint *) &position[0],
                           (gint *) &position[1]);
  variant = g_variant_new_fixed_array (G_VARIANT_TYPE_INT32,
                                       position, 2,
                                       sizeof (position[0]));
  g_settings_set_value (settings, "window-position", variant);

  return FALSE;
}

static gboolean
bjb_window_base_configure_event (GtkWidget         *widget,
                                 GdkEventConfigure *event)
{
  BjbWindowBase *self;
  gboolean   retval;

  self = BJB_WINDOW_BASE (widget);

  if (self->save_geometry_id != 0)
    g_source_remove (self->save_geometry_id);

  self->save_geometry_id = g_timeout_add (SAVE_GEOMETRY_ID_TIMEOUT,
                                          bjb_application_window_configured,
                                          self);
  retval = GTK_WIDGET_CLASS (bjb_window_base_parent_class)->configure_event (widget,
                                                                             event);
  return retval;
}


/* Gobj */
static void
bjb_window_base_constructed (GObject *obj)
{
  BjbWindowBase *self = BJB_WINDOW_BASE (obj);
  gboolean maximized;
  const gint32 *position;
  const gint32 *size;
  gsize n_elements;
  GVariant *variant;

  G_OBJECT_CLASS (bjb_window_base_parent_class)->constructed (obj);

  self->settings = bjb_app_get_settings ((gpointer) g_application_get_default ());

  gtk_window_set_position (GTK_WINDOW (self),GTK_WIN_POS_CENTER);
  gtk_window_set_title (GTK_WINDOW (self), _(BIJIBEN_MAIN_WIN_TITLE));

  variant = g_settings_get_value (G_SETTINGS (self->settings), "window-size");
  size = g_variant_get_fixed_array (variant, &n_elements, sizeof (gint32));
  if (n_elements == 2)
    gtk_window_set_default_size (GTK_WINDOW (self), size[0], size[1]);

  g_variant_unref (variant);

  variant = g_settings_get_value (G_SETTINGS (self->settings), "window-position");
  position = g_variant_get_fixed_array (variant, &n_elements, sizeof (gint32));
  if (n_elements == 2)
    gtk_window_move (GTK_WINDOW (self), position[0], position[1]);

  g_variant_unref (variant);

  maximized = g_settings_get_boolean (G_SETTINGS (self->settings), "window-maximized");
  if (maximized)
    gtk_window_maximize (GTK_WINDOW (self));

  /*  We probably want to offer a no entry window at first (startup) */
  self->entry = NULL;

  self->controller = bjb_controller_new
    (bijiben_get_manager (BJB_APPLICATION(g_application_get_default())),
     GTK_WINDOW (obj),
     self->entry );

  /* Search entry toolbar */
  self->search_bar = bjb_search_toolbar_new (GTK_WIDGET (obj), self->controller);
  gtk_box_pack_start (GTK_BOX (self->vbox), GTK_WIDGET (self->search_bar), FALSE, FALSE, 0);

  /* Shared toolbar */
  self->view = bjb_main_view_new (GTK_WIDGET (obj), self->controller);
  self->main_toolbar = bjb_main_toolbar_new (self->view, self->controller);
  gtk_window_set_titlebar (GTK_WINDOW (self), GTK_WIDGET (self->main_toolbar));

  /* UI : stack for different views */
  self->stack = GTK_STACK (gtk_stack_new ());
  gtk_box_pack_start (GTK_BOX (self->vbox), GTK_WIDGET (self->stack), TRUE, TRUE, 0);

  self->spinner = gtk_spinner_new ();
  gtk_stack_add_named (self->stack, self->spinner, "spinner");
  gtk_stack_set_visible_child_name (self->stack, "spinner");
  gtk_widget_show (self->spinner);
  gtk_spinner_start (GTK_SPINNER (self->spinner));

  self->no_note = bjb_empty_results_box_new ();
  gtk_stack_add_named (self->stack, self->no_note, "empty");

  gtk_stack_add_named (self->stack, GTK_WIDGET (self->view), "main-view");
  gtk_widget_show (GTK_WIDGET (self->stack));


  /* Connection to window signals */

  g_signal_connect (GTK_WIDGET (self),
                    "destroy",
                    G_CALLBACK (bjb_window_base_destroy),
                    self);

  /* Keys */

  g_signal_connect (GTK_WIDGET (self),
                    "key-press-event",
                    G_CALLBACK(on_key_pressed_cb),
		    self);

  /* If a note is requested at creation, show it
   * This is a specific type of window not associated with any view */
  if (self->note == NULL)
  {
    bjb_window_base_switch_to (self, BJB_WINDOW_BASE_MAIN_VIEW);
  }

  else
  {
    self->detached = TRUE;
    bjb_window_base_switch_to_item (self, BIJI_ITEM (self->note));
  }


  /* For some reason, do not gtk_widget_show _self_
   * or gtk_application_get_menu_bar will run,
   * fire a warning, while app menu will not show up
   * you have been warned!
   *
   * This is probably due to the fact that,
   * at startup, we still are
   * inside... drums... gapplication startup () */
  gtk_widget_show (self->vbox);
}


static void
bjb_window_base_init (BjbWindowBase *self)
{
  self->vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
  gtk_container_add (GTK_CONTAINER (self), self->vbox);
}

static void
bjb_window_base_class_init (BjbWindowBaseClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);

  gobject_class->constructed = bjb_window_base_constructed;
  gobject_class->finalize = bjb_window_base_finalize ;
  gobject_class->get_property = bjb_window_base_get_property;
  gobject_class->set_property = bjb_window_base_set_property;

  widget_class->configure_event = bjb_window_base_configure_event;

  bjb_win_base_signals[BJB_WIN_BASE_VIEW_CHANGED] = g_signal_new ("view-changed" ,
                                                    G_OBJECT_CLASS_TYPE (klass),
                                                    G_SIGNAL_RUN_LAST,
                                                    0,
                                                    NULL,
                                                    NULL,
                                                    g_cclosure_marshal_VOID__VOID,
                                                    G_TYPE_NONE,
                                                    0);

  bjb_win_base_signals[BJB_WIN_BASE_ACTIVATED] =    g_signal_new ("activated" ,
                                                    G_OBJECT_CLASS_TYPE (klass),
                                                    G_SIGNAL_RUN_LAST,
                                                    0,
                                                    NULL,
                                                    NULL,
                                                    g_cclosure_marshal_VOID__BOOLEAN,
                                                    G_TYPE_NONE,
                                                    1,
                                                    G_TYPE_BOOLEAN);

  properties[PROP_NOTE] = g_param_spec_object ("note",
                                               "NoteObj",
                                               "Currently opened note",
                                               BIJI_TYPE_NOTE_OBJ,
                                               G_PARAM_READWRITE |
                                               G_PARAM_CONSTRUCT |
                                               G_PARAM_STATIC_STRINGS);

  g_object_class_install_properties (gobject_class, NUM_PROPERTIES, properties);

}


GtkWindow *
bjb_window_base_new                    (BijiNoteObj *note)
{
  return g_object_new (BJB_TYPE_WINDOW_BASE,
                       "application", g_application_get_default(),
                       "note", note,
                       NULL);
}


BjbController *
bjb_window_base_get_controller (BjbWindowBase *self)
{
  return self->controller;
}

BijiNoteObj *
bjb_window_base_get_note (BjbWindowBase *self)
{
  g_return_val_if_fail (BJB_IS_WINDOW_BASE (self), NULL);

  return self->note;
}



static void
destroy_note_if_needed (BjbWindowBase *self)
{
  self->note = NULL;

  if (self->note_view && GTK_IS_WIDGET (self->note_view))
    g_clear_pointer (&(self->note_view), gtk_widget_destroy);
}


void
bjb_window_base_switch_to (BjbWindowBase *self, BjbWindowViewType type)
{
  if (type != BJB_WINDOW_BASE_NOTE_VIEW)
    destroy_note_if_needed (self);

  if (self->current_view == BJB_WINDOW_BASE_ARCHIVE_VIEW && type == BJB_WINDOW_BASE_NO_NOTE)
    type = self->current_view;

  switch (type)
  {

    /* Precise the window does not display any specific note
     * Refresh the model
     * Ensure the main view receives the proper signals
     *
     * main view & archive view are the same widget
     */

    case BJB_WINDOW_BASE_MAIN_VIEW:
      bjb_search_toolbar_connect (self->search_bar);
      bjb_main_view_connect_signals (self->view);
      gtk_widget_show (GTK_WIDGET (self->search_bar));
      gtk_stack_set_visible_child_name (self->stack, "main-view");
      break;

   case BJB_WINDOW_BASE_ARCHIVE_VIEW:
      bjb_search_toolbar_connect (self->search_bar);
      bjb_main_view_connect_signals (self->view);
      gtk_widget_show (GTK_WIDGET (self->search_bar));
      gtk_stack_set_visible_child_name (self->stack, "main-view");
      break;

    case BJB_WINDOW_BASE_SPINNER_VIEW:
      gtk_stack_set_visible_child_name (self->stack, "spinner");
      break;


    case BJB_WINDOW_BASE_NO_NOTE:
      bjb_empty_results_box_set_type (BJB_EMPTY_RESULTS_BOX (self->no_note),
                                      BJB_EMPTY_RESULTS_NO_NOTE);
      gtk_widget_show (self->no_note);
      gtk_widget_hide (GTK_WIDGET (self->search_bar));
      gtk_stack_set_visible_child_name (self->stack, "empty");
      break;


    case BJB_WINDOW_BASE_NO_RESULT:
      bjb_empty_results_box_set_type (BJB_EMPTY_RESULTS_BOX (self->no_note),
                                      BJB_EMPTY_RESULTS_NO_RESULTS);
      gtk_widget_show (self->no_note);
      gtk_stack_set_visible_child_name (self->stack, "empty");
      break;


    case BJB_WINDOW_BASE_ERROR_TRACKER:
      bjb_empty_results_box_set_type (BJB_EMPTY_RESULTS_BOX (self->no_note),
                                      BJB_EMPTY_RESULTS_TRACKER);
      gtk_widget_show_all (self->no_note);
      gtk_widget_hide (GTK_WIDGET (self->search_bar));
      gtk_stack_set_visible_child_name (self->stack, "empty");
      break;


    case BJB_WINDOW_BASE_NOTE_VIEW:
      gtk_widget_show (GTK_WIDGET (self->note_view));
      gtk_widget_hide (GTK_WIDGET (self->search_bar));
      gtk_stack_set_visible_child_name (self->stack, "note-view");
      break;


    case BJB_WINDOW_BASE_NO_VIEW:
    default:
      return;
  }

  self->current_view = type;

  g_signal_emit (G_OBJECT (self), bjb_win_base_signals[BJB_WIN_BASE_VIEW_CHANGED],0);
}


void
bjb_window_base_switch_to_item (BjbWindowBase *self, BijiItem *item)
{
  GtkWidget *w = GTK_WIDGET (self);

  bjb_search_toolbar_disconnect (self->search_bar);
  destroy_note_if_needed (self);

  if (BIJI_IS_NOTE_OBJ (item))
  {

    BijiNoteObj *note = BIJI_NOTE_OBJ (item);

    self->note = note;

    self->note_view = bjb_note_view_new (w, note);
    gtk_stack_add_named (self->stack, GTK_WIDGET (self->note_view), "note-view");

    g_object_add_weak_pointer (G_OBJECT (self->note_view),
                               (gpointer *) &self->note_view);

    bjb_window_base_switch_to (self, BJB_WINDOW_BASE_NOTE_VIEW);
    gtk_widget_show (w);
    bjb_note_view_grab_focus (self->note_view);
  }
}

BjbWindowViewType
bjb_window_base_get_view_type (BjbWindowBase *self)
{
  return self->current_view;
}

BijiManager *
bjb_window_base_get_manager(GtkWidget * win)
{
  return bijiben_get_manager (BJB_APPLICATION (g_application_get_default()));
}

void
bjb_window_base_set_entry(GtkWidget *win, gchar *search_entry)
{
  BjbWindowBase *self;

  g_return_if_fail (BJB_IS_WINDOW_BASE (win));

  self = BJB_WINDOW_BASE (win);
  self->entry = search_entry;
}


gchar *
bjb_window_base_get_entry(GtkWidget *win)
{
  BjbWindowBase *self = BJB_WINDOW_BASE(win);
  return self->entry;
}

gpointer
bjb_window_base_get_main_view (BjbWindowBase *self)
{
  return (gpointer) self->view;
}

GtkWidget *
bjb_window_base_get_search_bar (BjbWindowBase *self)
{
  return GTK_WIDGET (self->search_bar);
}

gboolean
bjb_window_base_get_show_search_bar (BjbWindowBase *self)
{

  /* There is no search bar at startup,
   * when main toolbar is first built... */
  if (!self->search_bar)
    return FALSE;

  return gtk_search_bar_get_search_mode (
            GTK_SEARCH_BAR (self->search_bar));
}

void
bjb_window_base_set_active (BjbWindowBase *self, gboolean active)
{
  gboolean available;

  available = (self->current_view != BJB_WINDOW_BASE_NOTE_VIEW);

  if (active == TRUE)
  {
    g_signal_emit (self,
                   bjb_win_base_signals[BJB_WIN_BASE_ACTIVATED],
                   0,
                   available);
  }
}


gboolean
bjb_window_base_is_detached (BjbWindowBase *self)
{
  return self->detached;
}
