/* bz-safety-dialog.c
 *
 * Copyright 2026 Alexander Vanhee
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

#include "config.h"

#include <glib/gi18n.h>

#include "bz-app-permissions.h"
#include "bz-context-row.h"
#include "bz-entry.h"
#include "bz-lozenge.h"
#include "safety-calculator.h"
#include "bz-safety-dialog.h"
#include "bz-safety-row.h"
#include "template-callbacks.h"

#define ANIMATION_DURATION 300

struct _BzSafetyDialog
{
  AdwBin parent_instance;

  BzEntry *entry;

  gboolean has_sandbox_escape;

  AdwAnimation *width_animation;
  AdwAnimation *height_animation;

  BzLozenge   *lozenge;
  GtkListBox  *permissions_list;
  AdwCarousel *carousel;
  GtkBox      *global_box;
  GtkButton   *other_permissions_button;
};

G_DEFINE_FINAL_TYPE (BzSafetyDialog, bz_safety_dialog, ADW_TYPE_BIN)

enum
{
  PROP_0,
  PROP_ENTRY,
  LAST_PROP
};

static GParamSpec *props[LAST_PROP] = { 0 };

static void update_permissions_list (BzSafetyDialog *self);
static void animate_to_page (BzSafetyDialog *self, guint page_index);

static void
bz_safety_dialog_dispose (GObject *object)
{
  BzSafetyDialog *self = BZ_SAFETY_DIALOG (object);

  g_clear_object (&self->entry);
  g_clear_object (&self->width_animation);
  g_clear_object (&self->height_animation);

  G_OBJECT_CLASS (bz_safety_dialog_parent_class)->dispose (object);
}

static void
bz_safety_dialog_get_property (GObject    *object,
                               guint       prop_id,
                               GValue     *value,
                               GParamSpec *pspec)
{
  BzSafetyDialog *self = BZ_SAFETY_DIALOG (object);

  switch (prop_id)
    {
    case PROP_ENTRY:
      g_value_set_object (value, self->entry);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}

static void
bz_safety_dialog_set_property (GObject      *object,
                               guint         prop_id,
                               const GValue *value,
                               GParamSpec   *pspec)
{
  BzSafetyDialog *self;

  self = BZ_SAFETY_DIALOG (object);

  switch (prop_id)
    {
    case PROP_ENTRY:
      g_clear_object (&self->entry);
      self->entry = g_value_dup_object (value);
      update_permissions_list (self);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}

static void
get_target_size (BzSafetyDialog *self,
                 guint           page_index,
                 int            *out_width,
                 int            *out_height)
{
  if (page_index == 0)
    {
      int nat    = 0;
      *out_width = 450;
      gtk_widget_measure (GTK_WIDGET (self->global_box),
                          GTK_ORIENTATION_VERTICAL,
                          *out_width,
                          NULL, &nat, NULL, NULL);
      *out_height = CLAMP (nat + 48, 100, 600);
    }
  else
    {
      *out_width  = 640;
      *out_height = 576;
    }
}

static void
animate_to_page (BzSafetyDialog *self,
                 guint           page_index)
{
  AdwDialog *dialog        = NULL;
  int        target_width  = 0;
  int        target_height = 0;
  int        cur_w         = 0;
  int        cur_h         = 0;

  dialog = ADW_DIALOG (gtk_widget_get_ancestor (GTK_WIDGET (self), ADW_TYPE_DIALOG));
  if (dialog == NULL)
    return;

  if (self->width_animation == NULL || self->height_animation == NULL)
    return;

  get_target_size (self, page_index, &target_width, &target_height);

  cur_w = adw_dialog_get_content_width (dialog);
  cur_h = adw_dialog_get_content_height (dialog);

  adw_animation_skip (self->width_animation);
  adw_animation_skip (self->height_animation);

  adw_timed_animation_set_duration (ADW_TIMED_ANIMATION (self->width_animation), ANIMATION_DURATION);
  adw_timed_animation_set_duration (ADW_TIMED_ANIMATION (self->height_animation), ANIMATION_DURATION);
  adw_timed_animation_set_value_from (ADW_TIMED_ANIMATION (self->width_animation), cur_w);
  adw_timed_animation_set_value_to (ADW_TIMED_ANIMATION (self->width_animation), target_width);
  adw_timed_animation_set_value_from (ADW_TIMED_ANIMATION (self->height_animation), cur_h);
  adw_timed_animation_set_value_to (ADW_TIMED_ANIMATION (self->height_animation), target_height);
  adw_animation_play (self->width_animation);
  adw_animation_play (self->height_animation);
}

static void
on_dialog_map (BzSafetyDialog *self)
{
  AdwDialog *dialog        = NULL;
  int        target_width  = 0;
  int        target_height = 0;
  guint      page_index    = self->has_sandbox_escape ? 0 : 1;

  dialog = ADW_DIALOG (gtk_widget_get_ancestor (GTK_WIDGET (self), ADW_TYPE_DIALOG));
  if (dialog == NULL)
    return;

  if (page_index == 1)
    {
      GtkWidget *page = NULL;

      page = gtk_widget_get_last_child (GTK_WIDGET (self->carousel));
      adw_carousel_scroll_to (self->carousel, page, FALSE);
    }
  else
    gtk_widget_grab_focus (GTK_WIDGET (self->other_permissions_button));

  get_target_size (self, page_index, &target_width, &target_height);
  adw_dialog_set_content_width (dialog, target_width);
  adw_dialog_set_content_height (dialog, target_height);
}

static void
next_page (BzSafetyDialog *self,
           GtkButton      *button)
{
  GtkWidget *page = NULL;

  page = gtk_widget_get_last_child (GTK_WIDGET (self->carousel));
  adw_carousel_scroll_to (self->carousel, page, TRUE);
  animate_to_page (self, 1);
}

static gboolean
is_page (gpointer object,
         gdouble  position,
         gint     target)
{
  return fabs (position - (gdouble) target) < 0.5 ||
        fabs (position - round (position)) > 0.01;
}

static void
bz_safety_dialog_class_init (BzSafetyDialogClass *klass)
{
  GObjectClass   *object_class;
  GtkWidgetClass *widget_class;

  object_class = G_OBJECT_CLASS (klass);
  widget_class = GTK_WIDGET_CLASS (klass);

  object_class->dispose      = bz_safety_dialog_dispose;
  object_class->get_property = bz_safety_dialog_get_property;
  object_class->set_property = bz_safety_dialog_set_property;

  props[PROP_ENTRY] =
      g_param_spec_object ("entry",
                           NULL, NULL,
                           BZ_TYPE_ENTRY,
                           G_PARAM_READWRITE);

  g_object_class_install_properties (object_class, LAST_PROP, props);

  g_type_ensure (BZ_TYPE_LOZENGE);

  gtk_widget_class_set_template_from_resource (widget_class,
                                               "/io/github/kolunmi/Bazaar/bz-safety-dialog.ui");
  bz_widget_class_bind_all_util_callbacks (widget_class);

  gtk_widget_class_bind_template_child (widget_class, BzSafetyDialog, lozenge);
  gtk_widget_class_bind_template_child (widget_class, BzSafetyDialog, permissions_list);
  gtk_widget_class_bind_template_child (widget_class, BzSafetyDialog, carousel);
  gtk_widget_class_bind_template_child (widget_class, BzSafetyDialog, global_box);
  gtk_widget_class_bind_template_child (widget_class, BzSafetyDialog, other_permissions_button);
  gtk_widget_class_bind_template_callback (widget_class, next_page);
  gtk_widget_class_bind_template_callback (widget_class, is_page);
}

static void
bz_safety_dialog_init (BzSafetyDialog *self)
{
  gtk_widget_init_template (GTK_WIDGET (self));
}

AdwDialog *
bz_safety_dialog_new (BzEntry *entry)
{
  BzSafetyDialog     *widget        = NULL;
  AdwDialog          *dialog        = NULL;
  AdwAnimationTarget *width_target  = NULL;
  AdwAnimationTarget *height_target = NULL;

  widget = g_object_new (BZ_TYPE_SAFETY_DIALOG, NULL);

  dialog = adw_dialog_new ();
  adw_dialog_set_content_height (dialog, 576);
  adw_dialog_set_content_width (dialog, 640);
  adw_dialog_set_child (dialog, GTK_WIDGET (widget));

  width_target             = adw_property_animation_target_new (G_OBJECT (dialog), "content-width");
  widget->width_animation  = adw_timed_animation_new (GTK_WIDGET (widget), 0, 0, ANIMATION_DURATION, width_target);
  height_target            = adw_property_animation_target_new (G_OBJECT (dialog), "content-height");
  widget->height_animation = adw_timed_animation_new (GTK_WIDGET (widget), 0, 0, ANIMATION_DURATION, height_target);

  g_object_set (widget, "entry", entry, NULL);

  g_signal_connect_swapped (widget, "map", G_CALLBACK (on_dialog_map), widget);

  return dialog;
}

AdwNavigationPage *
bz_safety_dialog_page_new (BzEntry *entry)
{
  BzSafetyDialog    *widget = NULL;
  AdwNavigationPage *page   = NULL;

  widget = g_object_new (BZ_TYPE_SAFETY_DIALOG, "entry", entry, NULL);
  page   = adw_navigation_page_new (GTK_WIDGET (widget), _ ("Safety"));
  adw_navigation_page_set_tag (page, "safety");

  return page;
}

static void
update_permissions_list (BzSafetyDialog *self)
{
  const char      *icon_names[2];
  const char      *app_name                = NULL;
  g_autofree char *title_text              = NULL;
  BzImportance     importance              = BZ_IMPORTANCE_UNIMPORTANT;
  GtkWidget       *child                   = NULL;
  g_autoptr (GListModel) model             = NULL;
  guint n_items                            = 0;
  g_autoptr (BzAppPermissions) permissions = NULL;
  BzAppPermissionsFlags perm_flags         = BZ_APP_PERMISSIONS_FLAGS_NONE;

  while ((child = gtk_widget_get_first_child (GTK_WIDGET (self->permissions_list))) != NULL)
    gtk_list_box_remove (self->permissions_list, child);

  if (self->entry == NULL)
    return;

  g_object_get (self->entry, "permissions", &permissions, NULL);
  if (permissions != NULL)
    perm_flags = bz_app_permissions_get_flags (permissions);
  self->has_sandbox_escape = (perm_flags & BZ_APP_PERMISSIONS_FLAGS_ESCAPE_SANDBOX) != 0;

  app_name   = bz_entry_get_title (self->entry);
  model      = bz_safety_calculator_analyze_entry (self->entry);
  importance = bz_safety_calculator_calculate_rating (self->entry);
  n_items    = g_list_model_get_n_items (model);

  for (gint level = BZ_IMPORTANCE_IMPORTANT; level >= BZ_IMPORTANCE_UNIMPORTANT; level--)
    {
      for (gint j = 0; j < n_items; j++)
        {
          g_autoptr (BzSafetyRow) row_data = NULL;
          AdwActionRow *row                = NULL;
          BzImportance  row_importance     = 0;

          row_data       = g_list_model_get_item (model, j);
          row_importance = bz_safety_row_get_importance (row_data);
          if (row_importance != level)
            continue;
          row = bz_context_row_new (bz_safety_row_get_icon_name (row_data),
                                    bz_safety_row_get_importance (row_data),
                                    bz_safety_row_get_title (row_data),
                                    bz_safety_row_get_subtitle (row_data));
          gtk_list_box_append (self->permissions_list, GTK_WIDGET (row));
        }
    }

  switch (importance)
    {
    case BZ_IMPORTANCE_UNIMPORTANT:
      icon_names[0] = "app-safety-ok-symbolic";
      icon_names[1] = NULL;
      title_text    = g_strdup_printf (_ ("%s is Safe"), app_name);
      break;
    case BZ_IMPORTANCE_NEUTRAL:
      icon_names[0] = "app-safety-ok-symbolic";
      icon_names[1] = NULL;
      title_text    = g_strdup_printf (_ ("%s has no Unsafe Permissions"), app_name);
      break;
    case BZ_IMPORTANCE_INFORMATION:
      icon_names[0] = "app-safety-ok-symbolic";
      icon_names[1] = NULL;
      title_text    = g_strdup_printf (_ ("%s is Probably Safe"), app_name);
      break;
    case BZ_IMPORTANCE_WARNING:
      icon_names[0] = "app-safety-unknown-symbolic";
      icon_names[1] = NULL;
      title_text    = g_strdup_printf (_ ("%s is Possibly Unsafe"), app_name);
      break;
    case BZ_IMPORTANCE_IMPORTANT:
      icon_names[0] = "app-safety-unsafe-symbolic";
      icon_names[1] = NULL;
      title_text    = g_strdup_printf (_ ("%s is Unsafe"), app_name);
      break;
    default:
      g_assert_not_reached ();
    }

  bz_lozenge_set_icon_names (self->lozenge, icon_names);
  bz_lozenge_set_title (self->lozenge, title_text);
  bz_lozenge_set_importance (self->lozenge, importance);
}
