/* ide-code-index-search-provider.c
 *
 * Copyright 2017 Anoop Chandu <anoopchandu96@gmail.com>
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

#define G_LOG_DOMAIN "ide-code-index-search-provider"

#include "ide-code-index-search-provider.h"
#include "ide-code-index-service.h"
#include "ide-code-index-index.h"

static void
populate_cb (GObject      *object,
             GAsyncResult *result,
             gpointer      user_data)
{
  IdeCodeIndexIndex *index = (IdeCodeIndexIndex *)object;
  g_autoptr(IdeTask) task = user_data;
  g_autoptr(GPtrArray) results = NULL;
  g_autoptr(GError) error = NULL;

  g_assert (IDE_IS_CODE_INDEX_INDEX (index));
  g_assert (G_IS_ASYNC_RESULT (result));
  g_assert (IDE_IS_TASK (task));

  results = ide_code_index_index_populate_finish (index, result, &error);

  if (results != NULL)
    ide_task_return_pointer (task,
                             g_steal_pointer (&results),
                             (GDestroyNotify)g_ptr_array_unref);
  else
    ide_task_return_error (task, g_steal_pointer (&error));
}

static void
ide_code_index_search_provider_search_async (IdeSearchProvider   *provider,
                                             const gchar         *search_terms,
                                             guint                max_results,
                                             GCancellable        *cancellable,
                                             GAsyncReadyCallback  callback,
                                             gpointer             user_data)
{
  IdeCodeIndexSearchProvider *self = (IdeCodeIndexSearchProvider *)provider;
  g_autoptr(IdeTask) task = NULL;
  IdeCodeIndexService *service;
  IdeCodeIndexIndex *index;
  IdeContext *context;

  IDE_ENTRY;

  g_return_if_fail (IDE_IS_MAIN_THREAD ());
  g_return_if_fail (IDE_IS_CODE_INDEX_SEARCH_PROVIDER (self));
  g_return_if_fail (search_terms != NULL);
  g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));

  context = ide_object_get_context (IDE_OBJECT (self));
  g_assert (IDE_IS_CONTEXT (context));

  service = ide_context_get_service_typed (context, IDE_TYPE_CODE_INDEX_SERVICE);
  g_assert (IDE_IS_CODE_INDEX_SERVICE (service));

  index = ide_code_index_service_get_index (service);

  task = ide_task_new (self, cancellable, callback, user_data);
  ide_task_set_source_tag (task, ide_code_index_search_provider_search_async);
  ide_task_set_priority (task, G_PRIORITY_LOW);

  if (index == NULL)
    ide_task_return_new_error (task,
                               G_IO_ERROR,
                               G_IO_ERROR_NOT_SUPPORTED,
                               "Code index is not currently available");
  else
    ide_code_index_index_populate_async (index,
                                         search_terms,
                                         max_results,
                                         cancellable,
                                         populate_cb,
                                         g_steal_pointer (&task));

  IDE_EXIT;
}

static GPtrArray *
ide_code_index_search_provider_search_finish (IdeSearchProvider *provider,
                                              GAsyncResult      *result,
                                              GError           **error)
{
  GPtrArray *ar;

  IDE_ENTRY;

  g_return_val_if_fail (IDE_IS_MAIN_THREAD (), NULL);
  g_return_val_if_fail (IDE_IS_CODE_INDEX_SEARCH_PROVIDER (provider), NULL);
  g_return_val_if_fail (IDE_IS_TASK (result), NULL);

  ar = ide_task_propagate_pointer (IDE_TASK (result), error);

  IDE_RETURN (IDE_PTR_ARRAY_STEAL_FULL (&ar));
}

static void
search_provider_iface_init (IdeSearchProviderInterface *iface)
{
  iface->search_async = ide_code_index_search_provider_search_async;
  iface->search_finish = ide_code_index_search_provider_search_finish;
}

struct _IdeCodeIndexSearchProvider { IdeObject parent; };

G_DEFINE_TYPE_WITH_CODE (IdeCodeIndexSearchProvider,
                         ide_code_index_search_provider,
                         IDE_TYPE_OBJECT,
                         G_IMPLEMENT_INTERFACE (IDE_TYPE_SEARCH_PROVIDER, search_provider_iface_init))

static void
ide_code_index_search_provider_init (IdeCodeIndexSearchProvider *self)
{
}

static void
ide_code_index_search_provider_class_init (IdeCodeIndexSearchProviderClass *klass)
{
}
