/*
    This file is part of darktable,
    Copyright (C) 2019-2024 darktable developers.

    darktable 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.

    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "common/darktable.h"
#include "common/debug.h"
#include "common/presets.h"
#include "control/signal.h"
#include "bauhaus/bauhaus.h"
#include "gui/gtk.h"
#include "libs/lib.h"
#include <gtk/gtk.h>
#include <stdlib.h>
#include <dtgtk/expander.h>

DT_MODULE(1)

typedef struct dt_lib_ioporder_t
{
  int current_mode;
} dt_lib_ioporder_t;

const char *name(dt_lib_module_t *self)
{
  return _("module order");
}

dt_view_type_flags_t views(dt_lib_module_t *self)
{
  return DT_VIEW_DARKROOM;
}

uint32_t container(dt_lib_module_t *self)
{
  return DT_UI_CONTAINER_PANEL_RIGHT_BOTTOM;
}

int position(const dt_lib_module_t *self)
{
  return 880;
}

static void _update(dt_lib_module_t *self)
{
  dt_lib_ioporder_t *d = self->data;

  if(self->arrow) gtk_widget_destroy(self->arrow);
  self->arrow = NULL;

  const dt_iop_order_t kind =
    dt_ioppr_get_iop_order_list_kind(darktable.develop->iop_order_list);

  if(kind == DT_IOP_ORDER_CUSTOM)
  {
    gchar *iop_order_list =
      dt_ioppr_serialize_text_iop_order_list(darktable.develop->iop_order_list);
    gboolean found = FALSE;
    int index = 0;

    GList *presets = dt_presets_list_all_params("ioporder", FALSE);
    for(const GList *l = presets; l; l = g_list_next(l))
    {
      const dt_presets_params_t *preset = l->data;
      const char *params = preset->op_params;
      const int32_t params_len = preset->op_params_size;
      const char *name = preset->name;
      GList *iop_list = dt_ioppr_deserialize_iop_order_list(params, params_len);
      gchar *iop_list_text = dt_ioppr_serialize_text_iop_order_list(iop_list);
      g_list_free(iop_list);
      index++;

      if(!strcmp(iop_order_list, iop_list_text))
      {
        dt_lib_gui_set_label(self, name);
        d->current_mode = index;
        found = TRUE;
        g_free(iop_list_text);
        break;
    }

      g_free(iop_list_text);
    }

    g_list_free_full(presets, dt_presets_params_free);

    g_free(iop_order_list);

    if(!found)
    {
      d->current_mode = DT_IOP_ORDER_CUSTOM;
      dt_lib_gui_set_label(self, _(dt_iop_order_string(d->current_mode)));
    }
  }
  else
  {
    d->current_mode = kind;
    dt_lib_gui_set_label(self, _(dt_iop_order_string(d->current_mode)));
  }
}

static void _image_loaded_callback(gpointer instance, dt_lib_module_t *self)
{
  // only in darkroom, so let's avoid any update when in lighttable
  if(dt_view_get_current() == DT_VIEW_DARKROOM)
  {
    _update(self);
  }
}

void gui_init(dt_lib_module_t *self)
{
  dt_lib_ioporder_t *d = malloc(sizeof(dt_lib_ioporder_t));

  self->data = (void *)d;
  d->current_mode = -1;

  DT_CONTROL_SIGNAL_HANDLE(DT_SIGNAL_DEVELOP_IMAGE_CHANGED, _image_loaded_callback);
  DT_CONTROL_SIGNAL_HANDLE(DT_SIGNAL_DEVELOP_INITIALIZE, _image_loaded_callback);
  DT_CONTROL_SIGNAL_HANDLE(DT_SIGNAL_DEVELOP_HISTORY_CHANGE, _image_loaded_callback);
}

void gui_cleanup(dt_lib_module_t *self)
{
  free(self->data);
  self->data = NULL;
}

void gui_reset(dt_lib_module_t *self)
{
  dt_lib_ioporder_t *d = self->data;

  // the module reset is use to select the proper default iop-order

  const gboolean is_ldr = dt_image_is_ldr(&darktable.develop->image_storage);

  const dt_iop_order_t iop_order =
    is_ldr
    ? DT_DEFAULT_IOP_ORDER_JPG
    : DT_DEFAULT_IOP_ORDER_RAW;

  GList *iop_order_list = dt_ioppr_get_iop_order_list_version(iop_order);

  if(iop_order_list)
  {
    const dt_imgid_t imgid = darktable.develop->image_storage.id;

    dt_ioppr_change_iop_order(darktable.develop, imgid, iop_order_list);

    dt_dev_pixelpipe_rebuild(darktable.develop);

    d->current_mode = iop_order;
    dt_lib_gui_set_label(self, _(dt_iop_order_string(d->current_mode)));
    g_list_free_full(iop_order_list, free);
  }
}

void init_presets(dt_lib_module_t *self)
{
  size_t size = 0;
  char *params = NULL;
  GList *list;

  self->pref_based_presets = TRUE;

  const gboolean is_display_referred = dt_is_display_referred();

  list = dt_ioppr_get_iop_order_list_version(DT_IOP_ORDER_LEGACY);
  params = dt_ioppr_serialize_iop_order_list(list, &size);
  dt_lib_presets_add(_("legacy"), self->plugin_name, self->version(),
                     (const char *)params, (int32_t)size, TRUE,
                     is_display_referred ? FOR_RAW | FOR_LDR : 0);
  free(params);
  dt_ioppr_iop_order_list_free(list);

  list = dt_ioppr_get_iop_order_list_version(DT_IOP_ORDER_V30);
  params = dt_ioppr_serialize_iop_order_list(list, &size);
  dt_lib_presets_add(_("v3.0 for RAW input"),
                     self->plugin_name, self->version(),
                     (const char *)params, (int32_t)size, TRUE, 0);
  free(params);
  dt_ioppr_iop_order_list_free(list);

  list = dt_ioppr_get_iop_order_list_version(DT_IOP_ORDER_V30_JPG);
  params = dt_ioppr_serialize_iop_order_list(list, &size);
  dt_lib_presets_add(_("v3.0 for JPEG/non-RAW input"),
                     self->plugin_name, self->version(),
                     (const char *)params, (int32_t)size, TRUE, 0);
  free(params);
  dt_ioppr_iop_order_list_free(list);

  // make it the default for new RAW
  list = dt_ioppr_get_iop_order_list_version(DT_IOP_ORDER_V50);
  params = dt_ioppr_serialize_iop_order_list(list, &size);
  dt_lib_presets_add(_("v5.0 for RAW input"),
                     self->plugin_name, self->version(),
                     (const char *)params, (int32_t)size, TRUE,
                     is_display_referred ? 0 : FOR_RAW | FOR_MATRIX);
  free(params);
  dt_ioppr_iop_order_list_free(list);

  list = dt_ioppr_get_iop_order_list_version(DT_IOP_ORDER_V50_JPG);
  params = dt_ioppr_serialize_iop_order_list(list, &size);
  dt_lib_presets_add(_("v5.0 for JPEG/non-RAW input"),
                     self->plugin_name, self->version(),
                     (const char *)params, (int32_t)size, TRUE,
                     is_display_referred ? 0 : FOR_LDR | FOR_NOT_MONO);
  free(params);
  dt_ioppr_iop_order_list_free(list);
}

int set_params(dt_lib_module_t *self, const void *params, int size)
{
  if(!params) return 1;

  GList *iop_order_list = dt_ioppr_deserialize_iop_order_list(params, (size_t)size);

  if(iop_order_list)
  {
    const dt_imgid_t imgid = darktable.develop->image_storage.id;

    dt_ioppr_change_iop_order(darktable.develop, imgid, iop_order_list);

    dt_dev_pixelpipe_rebuild(darktable.develop);

    _update(self);

    g_list_free_full(iop_order_list, free);
    return 0;
  }
  else
  {
    return 1;
  }
}

void *get_params(dt_lib_module_t *self, int *size)
{
  size_t p_size = 0;
  void *params = dt_ioppr_serialize_iop_order_list(darktable.develop->iop_order_list,
                                                   &p_size);
  *size = (int)p_size;

  return params;
}

gboolean preset_autoapply(dt_lib_module_t *self)
{
  return TRUE;
}

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