<?php
/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */

namespace Icinga\Forms\Config\Resource;

use Icinga\Application\Platform;
use Icinga\Web\Form;

/**
 * Form class for adding/modifying database resources
 */
class DbResourceForm extends Form
{
    /**
     * Initialize this form
     */
    public function init()
    {
        $this->setName('form_config_resource_db');
    }

    /**
     * Create and add elements to this form
     *
     * @param   array   $formData   The data sent by the user
     */
    public function createElements(array $formData)
    {
        $dbChoices = array();
        if (Platform::hasMysqlSupport()) {
            $dbChoices['mysql'] = 'MySQL';
        }
        if (Platform::hasPostgresqlSupport()) {
            $dbChoices['pgsql'] = 'PostgreSQL';
        }
        if (Platform::hasMssqlSupport()) {
            $dbChoices['mssql'] = 'MSSQL';
        }
        if (Platform::hasOracleSupport()) {
            $dbChoices['oracle'] = 'Oracle';
        }
        if (Platform::hasOciSupport()) {
            $dbChoices['oci'] = 'Oracle (OCI8)';
        }

        $offerSsl = false;
        $offerPostgres = false;
        $offerMysql = false;
        $dbChoice = isset($formData['db']) ? $formData['db'] : key($dbChoices);
        if ($dbChoice === 'pgsql') {
            $offerPostgres = true;
        } elseif ($dbChoice === 'mysql') {
            $offerMysql = true;
            if (version_compare(Platform::getPhpVersion(), '5.4.0', '>=')) {
                $offerSsl = true;
            }
        }

        $socketInfo = '';
        if ($offerPostgres) {
            $socketInfo = $this->translate(
                'For using unix domain sockets, specify the path to the unix domain socket directory'
            );
        } elseif ($offerMysql) {
            $socketInfo = $this->translate(
                'For using unix domain sockets, specify localhost'
            );
        }

        $this->addElement(
            'text',
            'name',
            array(
                'required'      => true,
                'label'         => $this->translate('Resource Name'),
                'description'   => $this->translate('The unique name of this resource')
            )
        );
        $this->addElement(
            'select',
            'db',
            array(
                'required'      => true,
                'autosubmit'    => true,
                'label'         => $this->translate('Database Type'),
                'description'   => $this->translate('The type of SQL database'),
                'multiOptions'  => $dbChoices
            )
        );
        $this->addElement(
            'text',
            'host',
            array (
                'required'      => true,
                'label'         => $this->translate('Host'),
                'description'   => $this->translate('The hostname of the database')
                    . ($socketInfo ? '. ' . $socketInfo : ''),
                'value'         => 'localhost'
            )
        );
        $this->addElement(
            'number',
            'port',
            array(
                'description'       => $this->translate('The port to use'),
                'label'             => $this->translate('Port'),
                'preserveDefault'   => true,
                'required'          => $offerPostgres,
                'value'             => $offerPostgres ? 5432 : null
            )
        );
        $this->addElement(
            'text',
            'dbname',
            array(
                'required'      => true,
                'label'         => $this->translate('Database Name'),
                'description'   => $this->translate('The name of the database to use')
            )
        );
        $this->addElement(
            'text',
            'username',
            array (
                'required'      => true,
                'label'         => $this->translate('Username'),
                'description'   => $this->translate('The user name to use for authentication')
            )
        );
        $this->addElement(
            'password',
            'password',
            array(
                'renderPassword'    => true,
                'label'             => $this->translate('Password'),
                'description'       => $this->translate('The password to use for authentication')
            )
        );
        $this->addElement(
            'text',
            'charset',
            array (
                'description'   => $this->translate('The character set for the database'),
                'label'         => $this->translate('Character Set')
            )
        );
        $this->addElement(
            'checkbox',
            'persistent',
            array(
                'description'   => $this->translate(
                    'Check this box for persistent database connections. Persistent connections are not closed at the'
                    . ' end of a request, but are cached and re-used. This is experimental'
                ),
                'label'         => $this->translate('Persistent')
            )
        );
        if ($offerSsl) {
            $this->addElement(
                'checkbox',
                'use_ssl',
                array(
                    'autosubmit'    => true,
                    'label'         => $this->translate('Use SSL'),
                    'description'   => $this->translate(
                        'Whether to encrypt the connection or to authenticate using certificates'
                    )
                )
            );
            if (isset($formData['use_ssl']) && $formData['use_ssl']) {
                $this->addElement(
                    'text',
                    'ssl_key',
                    array(
                        'label'             => $this->translate('SSL Key'),
                        'description'       => $this->translate('The client key file path')
                    )
                );
                $this->addElement(
                    'text',
                    'ssl_cert',
                    array(
                        'label'             => $this->translate('SSL Certificate'),
                        'description'       => $this->translate('The certificate file path')
                    )
                );
                $this->addElement(
                    'text',
                    'ssl_ca',
                    array(
                        'label'             => $this->translate('SSL CA'),
                        'description'       => $this->translate('The CA certificate file path')
                    )
                );
                $this->addElement(
                    'text',
                    'ssl_capath',
                    array(
                        'label'             => $this->translate('SSL CA Path'),
                        'description'       => $this->translate(
                            'The trusted CA certificates in PEM format directory path'
                        )
                    )
                );
                $this->addElement(
                    'text',
                    'ssl_cipher',
                    array(
                        'label'             => $this->translate('SSL Cipher'),
                        'description'       => $this->translate('The list of permissible ciphers')
                    )
                );
            }
        }

        return $this;
    }
}
