/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

/** \file
 * \ingroup bke
 */

#include <cstring>
#include <utility>

#include "DNA_ID.h"

#include "BLI_listbase.h"
#include "BLI_string.h"
#include "BLI_string_ref.hh"
#include "BLI_string_utf8.h"
#include "BLI_string_utils.hh"
#include "BLI_uuid.h"

#include "BKE_asset.hh"
#include "BKE_idprop.hh"
#include "BKE_preview_image.hh"

#include "BLO_read_write.hh"

#include "MEM_guardedalloc.h"

namespace blender {

AssetMetaData *BKE_asset_metadata_create()
{
  return MEM_new<AssetMetaData>(__func__);
}

void BKE_asset_metadata_free(AssetMetaData **asset_data)
{
  MEM_delete(*asset_data);
  *asset_data = nullptr;
}

AssetMetaData *BKE_asset_metadata_copy(const AssetMetaData *source)
{
  return MEM_new<AssetMetaData>(__func__, *source);
}

AssetMetaData::AssetMetaData(const AssetMetaData &other)
    : local_type_info(other.local_type_info),
      properties(nullptr),
      catalog_id(other.catalog_id),
      active_tag(other.active_tag),
      tot_tags(other.tot_tags),
      flag(other.flag),
      preferred_import_method(other.preferred_import_method)
{
  if (other.properties) {
    properties = IDP_CopyProperty(other.properties);
  }

  STRNCPY(catalog_simple_name, other.catalog_simple_name);

  author = BLI_strdup_null(other.author);
  description = BLI_strdup_null(other.description);
  copyright = BLI_strdup_null(other.copyright);
  license = BLI_strdup_null(other.license);

  BLI_duplicatelist(&tags, &other.tags);
}

AssetMetaData::AssetMetaData(AssetMetaData &&other)
    : local_type_info(other.local_type_info),
      properties(std::exchange(other.properties, nullptr)),
      catalog_id(other.catalog_id),
      author(std::exchange(other.author, nullptr)),
      description(std::exchange(other.description, nullptr)),
      copyright(std::exchange(other.copyright, nullptr)),
      license(std::exchange(other.license, nullptr)),
      active_tag(other.active_tag),
      tot_tags(other.tot_tags),
      flag(other.flag),
      preferred_import_method(other.preferred_import_method)

{
  STRNCPY(catalog_simple_name, other.catalog_simple_name);
  tags = other.tags;
  other.tags.clear_no_delete();
}

AssetMetaData::~AssetMetaData()
{
  if (properties) {
    IDP_FreeProperty(properties);
  }
  MEM_SAFE_DELETE(author);
  MEM_SAFE_DELETE(description);
  MEM_SAFE_DELETE(copyright);
  MEM_SAFE_DELETE(license);
  tags.free_no_destruct();
}

static AssetTag *asset_metadata_tag_add(AssetMetaData *asset_data, const char *const name)
{
  AssetTag *tag = MEM_new<AssetTag>(__func__);
  STRNCPY_UTF8(tag->name, name);

  BLI_addtail(&asset_data->tags, tag);
  asset_data->tot_tags++;
  /* Invariant! */
  BLI_assert(asset_data->tags.count() == asset_data->tot_tags);

  return tag;
}

AssetTag *BKE_asset_metadata_tag_add(AssetMetaData *asset_data, const char *name)
{
  AssetTag *tag = asset_metadata_tag_add(asset_data, name);
  BLI_uniquename(&asset_data->tags, tag, name, '.', offsetof(AssetTag, name), sizeof(tag->name));
  return tag;
}

AssetTagEnsureResult BKE_asset_metadata_tag_ensure(AssetMetaData *asset_data, const char *name)
{
  AssetTagEnsureResult result = {nullptr};
  if (!name[0]) {
    return result;
  }

  AssetTag *tag = static_cast<AssetTag *>(
      BLI_findstring(&asset_data->tags, name, offsetof(AssetTag, name)));

  if (tag) {
    result.tag = tag;
    result.is_new = false;
    return result;
  }

  tag = asset_metadata_tag_add(asset_data, name);

  result.tag = tag;
  result.is_new = true;
  return result;
}

void BKE_asset_metadata_tag_remove(AssetMetaData *asset_data, AssetTag *tag)
{
  BLI_assert(BLI_findindex(&asset_data->tags, tag) >= 0);
  BLI_freelinkN(&asset_data->tags, tag);
  asset_data->tot_tags--;
  /* Invariant! */
  BLI_assert(asset_data->tags.count() == asset_data->tot_tags);
}

void BKE_asset_library_reference_init_default(AssetLibraryReference *library_ref)
{
  *library_ref = AssetLibraryReference();
}

void BKE_asset_metadata_catalog_id_clear(AssetMetaData *asset_data)
{
  asset_data->catalog_id = BLI_uuid_nil();
  asset_data->catalog_simple_name[0] = '\0';
}

void BKE_asset_metadata_catalog_id_set(AssetMetaData *asset_data,
                                       const bUUID catalog_id,
                                       const char *catalog_simple_name)
{
  asset_data->catalog_id = catalog_id;
  StringRef(catalog_simple_name).trim().copy_utf8_truncated(asset_data->catalog_simple_name);
}

void BKE_asset_metadata_idprop_ensure(AssetMetaData *asset_data, IDProperty *prop)
{
  using namespace blender::bke;
  if (!asset_data->properties) {
    asset_data->properties = idprop::create_group("AssetMetaData.properties").release();
  }
  /* Important: The property may already exist. For now just allow always allow a newly allocated
   * property, and replace the existing one as a way of updating. */
  IDP_ReplaceInGroup(asset_data->properties, prop);
}

IDProperty *BKE_asset_metadata_idprop_find(const AssetMetaData *asset_data, const char *name)
{
  if (!asset_data->properties) {
    return nullptr;
  }
  return IDP_GetPropertyFromGroup(asset_data->properties, name);
}

/* Queries -------------------------------------------- */

PreviewImage *BKE_asset_metadata_preview_get_from_id(const AssetMetaData * /*asset_data*/,
                                                     const ID *owner_id)
{
  return BKE_previewimg_id_get(owner_id);
}

/* .blend file API -------------------------------------------- */

void BKE_asset_metadata_write(BlendWriter *writer, AssetMetaData *asset_data)
{
  writer->write_struct(asset_data);

  if (asset_data->properties) {
    IDP_BlendWrite(writer, asset_data->properties);
  }

  writer->write_string(asset_data->author);
  writer->write_string(asset_data->description);
  writer->write_string(asset_data->copyright);
  writer->write_string(asset_data->license);

  for (AssetTag &tag : asset_data->tags) {
    writer->write_struct(&tag);
  }
}

void BKE_asset_metadata_read(BlendDataReader *reader, AssetMetaData *asset_data)
{
  /* asset_data itself has been read already. */
  asset_data->local_type_info = nullptr;

  if (asset_data->properties) {
    BLO_read_struct(reader, IDProperty, &asset_data->properties);
    IDP_BlendDataRead(reader, &asset_data->properties);
  }

  BLO_read_string(reader, &asset_data->author);
  BLO_read_string(reader, &asset_data->description);
  BLO_read_string(reader, &asset_data->copyright);
  BLO_read_string(reader, &asset_data->license);

  BLO_read_struct_list(reader, AssetTag, &asset_data->tags);
  BLI_assert(asset_data->tags.count() == asset_data->tot_tags);
}

}  // namespace blender