/*
 * @project      The CERN Tape Archive (CTA)
 * @copyright    Copyright © 2021-2022 CERN
 * @license      This program is free software, distributed under the terms of the GNU General Public
 *               Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". You can
 *               redistribute it and/or modify it under the terms of the GPL Version 3, 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.
 *
 *               In applying this licence, CERN does not waive the privileges and immunities
 *               granted to it by virtue of its status as an Intergovernmental Organization or
 *               submit itself to any jurisdiction.
 */

#include "catalogue/SchemaCreatingSqliteCatalogue.hpp"
#include "catalogue/SqliteCatalogueSchema.hpp"
#include "common/dataStructures/VirtualOrganization.hpp"
#include "common/utils/utils.hpp"
#include "rdbms/ConnPool.hpp"

namespace cta::catalogue {

//------------------------------------------------------------------------------
// constructor
//------------------------------------------------------------------------------
SchemaCreatingSqliteCatalogue::SchemaCreatingSqliteCatalogue(
  log::Logger &log,
  const std::string &filename,
  const uint64_t nbConns,
  const uint64_t nbArchiveFileListingConns):
  SqliteCatalogue(log, filename, nbConns, nbArchiveFileListingConns) {
  try {
    createCatalogueSchema();
  } catch(exception::Exception &ex) {
    throw exception::Exception(std::string(__FUNCTION__) + " failed: " + ex.getMessage().str());
  }
}

//------------------------------------------------------------------------------
// createCatalogueSchema
//------------------------------------------------------------------------------
void SchemaCreatingSqliteCatalogue::createCatalogueSchema() {
  try {
    const SqliteCatalogueSchema schema;
    auto conn = m_connPool->getConn();
    executeNonQueries(conn, schema.sql);
  } catch(exception::Exception &ex) {
    throw exception::Exception(std::string(__FUNCTION__) + " failed: " + ex.getMessage().str());
  }
}

//------------------------------------------------------------------------------
// executeNonQueries
//------------------------------------------------------------------------------
void SchemaCreatingSqliteCatalogue::executeNonQueries(rdbms::Conn &conn, const std::string &sqlStmts) {
  try {
    std::string::size_type searchPos = 0;
    std::string::size_type findResult = std::string::npos;

    while(std::string::npos != (findResult = sqlStmts.find(';', searchPos))) {
      // Calculate the length of the current statement without the trailing ';'
      const std::string::size_type stmtLen = findResult - searchPos;
      const std::string sqlStmt = utils::trimString(sqlStmts.substr(searchPos, stmtLen));
      searchPos = findResult + 1;

      if(0 < sqlStmt.size()) { // Ignore empty statements
        conn.executeNonQuery(sqlStmt);
      }
    }

  } catch(exception::Exception &ex) {
    throw exception::Exception(std::string(__FUNCTION__) + " failed: " + ex.getMessage().str());
  }
}

} // namespace cta::catalogue