<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2011 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Log\Logger;

use Joomla\CMS\Factory;
use Joomla\CMS\Log\LogEntry;
use Joomla\CMS\Log\Logger;
use Joomla\Database\DatabaseDriver;

// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Joomla! MySQL Database Log class
 *
 * This class is designed to output logs to a specific MySQL database table. Fields in this
 * table are based on the Syslog style of log output. This is designed to allow quick and
 * easy searching.
 *
 * @since  1.7.0
 */
class DatabaseLogger extends Logger
{
    /**
     * The name of the database driver to use for connecting to the database.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $driver = 'mysqli';

    /**
     * The host name (or IP) of the server with which to connect for the logger.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $host = '127.0.0.1';

    /**
     * The database server user to connect as for the logger.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $user = 'root';

    /**
     * The password to use for connecting to the database server.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $password = '';

    /**
     * The name of the database table to use for the logger.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $database = 'logging';

    /**
     * The database table prefix of the database store logging entries.
     *
     * @var    string
     * @since  4.3.0
     */
    protected $prefix;

    /**
     * The database table to use for logging entries.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $table = 'jos_';

    /**
     * The database driver object for the logger.
     *
     * @var    DatabaseDriver
     * @since  1.7.0
     */
    protected $db;

    /**
     * Constructor.
     *
     * @param   array  &$options  Log object options.
     *
     * @since   1.7.0
     */
    public function __construct(array &$options)
    {
        // Call the parent constructor.
        parent::__construct($options);

        // If both the database object and driver options are empty we want to use the system database connection.
        if (empty($this->options['db_driver'])) {
            $this->db       = Factory::getDbo();
            $this->driver   = null;
            $this->host     = null;
            $this->user     = null;
            $this->password = null;
            $this->database = null;
            $this->prefix   = null;
        } else {
            $this->db       = null;
            $this->driver   = (empty($this->options['db_driver'])) ? 'mysqli' : $this->options['db_driver'];
            $this->host     = (empty($this->options['db_host'])) ? '127.0.0.1' : $this->options['db_host'];
            $this->user     = (empty($this->options['db_user'])) ? 'root' : $this->options['db_user'];
            $this->password = (empty($this->options['db_pass'])) ? '' : $this->options['db_pass'];
            $this->database = (empty($this->options['db_database'])) ? 'logging' : $this->options['db_database'];
            $this->prefix   = (empty($this->options['db_prefix'])) ? 'jos_' : $this->options['db_prefix'];
        }

        // The table name is independent of how we arrived at the connection object.
        $this->table = (empty($this->options['db_table'])) ? '#__log_entries' : $this->options['db_table'];
    }

    /**
     * Method to add an entry to the log.
     *
     * @param   LogEntry  $entry  The log entry object to add to the log.
     *
     * @return  void
     *
     * @since   1.7.0
     * @throws  \RuntimeException
     */
    public function addEntry(LogEntry $entry)
    {
        // Connect to the database if not connected.
        if (empty($this->db)) {
            $this->connect();
        }

        // Convert the date.
        $entry->date = $entry->date->toSql(false, $this->db);

        $this->db->insertObject($this->table, $entry);
    }

    /**
     * Method to connect to the database server based on object properties.
     *
     * @return  void
     *
     * @since   1.7.0
     * @throws  \RuntimeException
     */
    protected function connect()
    {
        // Build the configuration object to use for DatabaseDriver.
        $options = [
            'driver'   => $this->driver,
            'host'     => $this->host,
            'user'     => $this->user,
            'password' => $this->password,
            'database' => $this->database,
            'prefix'   => $this->prefix,
        ];

        $this->db = DatabaseDriver::getInstance($options);
    }
}