<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class SASSET_Session_database_driver extends CI_Session_database_driver
{

    /**
     * Session Write
     *
     * Execute the regular write(), then execute account_session_assoc(), which will see if
     * this session already has an existing record in the account_sessions_assoc association
     * table, if it does, just update the session_id, and +1 the regens value, if there is
     * no existing record, then isnert one.
     *
     * @param    string $session_id   Current session ID of the viewer
     * @param    string $session_data Base64encoded session data
     *
     * @return    boolean
     * @access    public
     * @since     0.1.0
     */
    public function write( $session_id, $session_data )
    {
        // If the Accounts model isnt loaded, load it
        if( ! class_exists( 'Accounts_model', FALSE ) )
        {
            $CI =& get_instance();

            $CI->load->model( 'Accounts_model' );
        }

        if( ! parent::write( $session_id, $session_data ) )
        {
            log_message( "error", "SESSION " . __METHOD__ . " - FAILED to write session data for session ID $session_id" );

            return FALSE;
        }

        log_message( "error", "SESSION " . __METHOD__ . " - SUCCESSFULLY wrote session data for session ID $session_id" );

        // If theres an account ID set in the session data...
        if( isset( $_SESSION['account_id'] ) )
        {
            log_message( 'error', "SESSION " . __METHOD__ . " - Associating session $session_id to account ID " . $_SESSION['account_id'] );
            //log_message('error',"SESSION Writing session for account ID " . $_SESSION['account_id']);
            // ... Associate the account ID to the session ID
            //Accounts_model::$instance->assoc_session($_SESSION['account_id'], $session_id);
            Accounts_model::account_session_assoc();
        }
        else
        {
            //log_message('error',"SESSION Writing session, but NO ACCOUNT ID FOUND");
        }

        return TRUE;
    }

    /**
     * Garbage Collector
     *
     * Execute the regular gc(), then execute _assoc_gc(), which will delete any sessions from the
     * aaccount_sessions_assoc association table if the session_id isnt found in ci_sessions
     *
     * @param    integer $maxlifetime Time stamp used to mark which sessions should be deleted
     *
     * @return    boolean
     * @access    public
     * @since     0.1.0
     */
    public function gc( $maxlifetime )
    {
        if( ! parent::gc( $maxlifetime ) )
        {
            log_message( 'error', "SESSION " . __METHOD__ . " - Garbage collector failed.." );

            return FALSE;
        }

        log_message( 'error', "SESSION " . __METHOD__ . " - Executing assoc GC" );

        return $this->_assoc_gc();
    }

    /**
     * Session Destroy
     *
     * Execute the regular destroy(), then execute _assoc_gc(), which will delete any sessions from the
     * account_sessions_assoc association table if the session_id isnt found in ci_sessions
     *
     * @param    string $session_id Session ID to destroy
     *
     * @return    boolean
     * @access    public
     * @since     0.1.0
     */
    public function destroy( $session_id )
    {
        if( ! parent::destroy( $session_id ) )
        {
            log_message( 'error', "SESSION " . __METHOD__ . " - Delete failed for session ID $session_id" );

            return FALSE;
        }

        log_message( 'error', "SESSION " . __METHOD__ . " - Executing assoc GC" );

        return $this->_assoc_gc();
    }
}