/*
   Copyright (c) 2013, 2023, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#ifndef TRIGGER_LOADER_H_INCLUDED
#define TRIGGER_LOADER_H_INCLUDED

///////////////////////////////////////////////////////////////////////////

#include "sql_list.h"

struct TABLE;

class THD;
class Trigger;

class Trigger_loader
{
public:
  /************************************************************************
   * Functions to work with TRN files.
   ***********************************************************************/

  static LEX_STRING build_trn_path(char *trn_file_name_buffer,
                                   int trn_file_name_buffer_size,
                                   const char *db_name,
                                   const char *trigger_name);

  static bool check_trn_exists(const LEX_STRING &trn_path);

  static bool load_trn_file(THD *thd,
                            const LEX_STRING &trigger_name,
                            const LEX_STRING &trn_path,
                            LEX_STRING *tbl_name);

public:
  static bool trg_file_exists(const char *db_name,
                              const char *table_name);

  static bool load_triggers(THD *thd,
                            MEM_ROOT *mem_root,
                            const char *db_name,
                            const char *table_name,
                            List<Trigger> *triggers);

  static bool store_trigger(const LEX_STRING &db_name,
                            const LEX_STRING &table_name,
                            MEM_ROOT *mem_root,
                            Trigger *new_trigger,
                            List<Trigger> *triggers);

  static bool drop_trigger(const LEX_STRING &db_name,
                           const LEX_STRING &table_name,
                           const LEX_STRING &trigger_name,
                           MEM_ROOT *mem_root,
                           List<Trigger> *triggers,
                           bool *trigger_found);

  static bool drop_all_triggers(const char *db_name,
                                const char *table_name,
                                List<Trigger> *triggers);

  static bool rename_subject_table(MEM_ROOT *mem_root,
                                   List<Trigger> *triggers,
                                   const char *old_db_name,
                                   LEX_STRING *old_table_name,
                                   const char *new_db_name,
                                   LEX_STRING *new_table_name,
                                   bool upgrading50to51);

private:
  Trigger_loader()
  { }
};

///////////////////////////////////////////////////////////////////////////

#endif // TRIGGER_LOADER_H_INCLUDED