<?php
/**
 * StatusNet, the distributed open-source microblogging tool
 *
 * Site administration panel
 *
 * PHP version 5
 *
 * LICENCE: This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @category  Settings
 * @package   StatusNet
 * @author    Evan Prodromou <evan@status.net>
 * @author    Zach Copley <zach@status.net>
 * @author    Sarven Capadisli <csarven@status.net>
 * @copyright 2008-2009 StatusNet, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link      http://status.net/
 */

if (!defined('STATUSNET')) {
    exit(1);
}

/**
 * Administer site settings
 *
 * @category Admin
 * @package  StatusNet
 * @author   Evan Prodromou <evan@status.net>
 * @author   Zach Copley <zach@status.net>
 * @author   Sarven Capadisli <csarven@status.net>
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link     http://status.net/
 */

class SiteadminpanelAction extends AdminPanelAction
{
    /**
     * Returns the page title
     *
     * @return string page title
     */

    function title()
    {
        return _('Site');
    }

    /**
     * Instructions for using this form.
     *
     * @return string instructions
     */

    function getInstructions()
    {
        return _('Basic settings for this StatusNet site.');
    }

    /**
     * Show the site admin panel form
     *
     * @return void
     */

    function showForm()
    {
        $form = new SiteAdminPanelForm($this);
        $form->show();
        return;
    }

    /**
     * Save settings from the form
     *
     * @return void
     */

    function saveSettings()
    {
        static $settings = array('site' => array('name', 'broughtby', 'broughtbyurl',
                                                 'email', 'timezone', 'language',
                                                 'site', 'textlimit', 'dupelimit'),
                                 'snapshot' => array('run', 'reporturl', 'frequency'));

        static $booleans = array('site' => array('private', 'inviteonly', 'closed', 'fancy'));

        $values = array();

        foreach ($settings as $section => $parts) {
            foreach ($parts as $setting) {
                $values[$section][$setting] = $this->trimmed($setting);
            }
        }

        foreach ($booleans as $section => $parts) {
            foreach ($parts as $setting) {
                $values[$section][$setting] = ($this->boolean($setting)) ? 1 : 0;
            }
        }

        // This throws an exception on validation errors

        $this->validate($values);

        // assert(all values are valid);

        $config = new Config();

        $config->query('BEGIN');

        foreach ($settings as $section => $parts) {
            foreach ($parts as $setting) {
                Config::save($section, $setting, $values[$section][$setting]);
            }
        }

        foreach ($booleans as $section => $parts) {
            foreach ($parts as $setting) {
                Config::save($section, $setting, $values[$section][$setting]);
            }
        }

        $config->query('COMMIT');

        return;
    }

    function validate(&$values)
    {
        // Validate site name

        if (empty($values['site']['name'])) {
            $this->clientError(_("Site name must have non-zero length."));
        }

        // Validate email

        $values['site']['email'] = common_canonical_email($values['site']['email']);

        if (empty($values['site']['email'])) {
            $this->clientError(_('You must have a valid contact email address.'));
        }
        if (!Validate::email($values['site']['email'], common_config('email', 'check_domain'))) {
            $this->clientError(_('Not a valid email address.'));
        }

        // Validate timezone

        if (is_null($values['site']['timezone']) ||
            !in_array($values['site']['timezone'], DateTimeZone::listIdentifiers())) {
            $this->clientError(_('Timezone not selected.'));
            return;
        }

        // Validate language

        if (!is_null($values['site']['language']) &&
            !in_array($values['site']['language'], array_keys(get_nice_language_list()))) {
            $this->clientError(sprintf(_('Unknown language "%s".'), $values['site']['language']));
        }

        // Validate report URL

        if (!is_null($values['snapshot']['reporturl']) &&
            !Validate::uri($values['snapshot']['reporturl'], array('allowed_schemes' => array('http', 'https')))) {
            $this->clientError(_("Invalid snapshot report URL."));
        }

        // Validate snapshot run value

        if (!in_array($values['snapshot']['run'], array('web', 'cron', 'never'))) {
            $this->clientError(_("Invalid snapshot run value."));
        }

        // Validate snapshot run value

        if (!Validate::number($values['snapshot']['frequency'])) {
            $this->clientError(_("Snapshot frequency must be a number."));
        }

        // Validate text limit

        if (!Validate::number($values['site']['textlimit'], array('min' => 140))) {
            $this->clientError(_("Minimum text limit is 140 characters."));
        }

        // Validate dupe limit

        if (!Validate::number($values['site']['dupelimit'], array('min' => 1))) {
            $this->clientError(_("Dupe limit must 1 or more seconds."));
        }

    }
}

class SiteAdminPanelForm extends AdminForm
{
    /**
     * ID of the form
     *
     * @return int ID of the form
     */

    function id()
    {
        return 'form_site_admin_panel';
    }

    /**
     * class of the form
     *
     * @return string class of the form
     */

    function formClass()
    {
        return 'form_settings';
    }

    /**
     * Action of the form
     *
     * @return string URL of the action
     */

    function action()
    {
        return common_local_url('siteadminpanel');
    }

    /**
     * Data elements of the form
     *
     * @return void
     */

    function formData()
    {
        $this->out->elementStart('fieldset', array('id' => 'settings_admin_general'));
        $this->out->element('legend', null, _('General'));
        $this->out->elementStart('ul', 'form_data');
        $this->li();
        $this->input('name', _('Site name'),
                     _('The name of your site, like "Yourcompany Microblog"'));
        $this->unli();

        $this->li();
        $this->input('broughtby', _('Brought by'),
                     _('Text used for credits link in footer of each page'));
        $this->unli();

        $this->li();
        $this->input('broughtbyurl', _('Brought by URL'),
                     _('URL used for credits link in footer of each page'));
        $this->unli();
        $this->li();
        $this->input('email', _('Email'),
                     _('Contact email address for your site'));
        $this->unli();
        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');

        $this->out->elementStart('fieldset', array('id' => 'settings_admin_local'));
        $this->out->element('legend', null, _('Local'));
        $this->out->elementStart('ul', 'form_data');
        $timezones = array();

        foreach (DateTimeZone::listIdentifiers() as $k => $v) {
            $timezones[$v] = $v;
        }

        asort($timezones);

        $this->li();
        $this->out->dropdown('timezone', _('Default timezone'),
                             $timezones, _('Default timezone for the site; usually UTC.'),
                             true, $this->value('timezone'));
        $this->unli();

        $this->li();
        $this->out->dropdown('language', _('Language'),
                             get_nice_language_list(), _('Default site language'),
                             false, $this->value('language'));
        $this->unli();

        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');

        $this->out->elementStart('fieldset', array('id' => 'settings_admin_urls'));
        $this->out->element('legend', null, _('URLs'));
        $this->out->elementStart('ul', 'form_data');
        $this->li();
        $this->input('server', _('Server'), _('Site\'s server hostname.'));
        $this->unli();

        $this->li();
        $this->out->checkbox('fancy', _('Fancy URLs'),
                             (bool) $this->value('fancy'),
                             _('Use fancy (more readable and memorable) URLs?'));
        $this->unli();
        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');

        $this->out->elementStart('fieldset', array('id' => 'settings_admin_access'));
        $this->out->element('legend', null, _('Access'));
        $this->out->elementStart('ul', 'form_data');
        $this->li();
        $this->out->checkbox('private', _('Private'),
                             (bool) $this->value('private'),
                             _('Prohibit anonymous users (not logged in) from viewing site?'));
        $this->unli();

        $this->li();
        $this->out->checkbox('inviteonly', _('Invite only'),
                             (bool) $this->value('inviteonly'),
                             _('Make registration invitation only.'));
        $this->unli();

        $this->li();
        $this->out->checkbox('closed', _('Closed'),
                             (bool) $this->value('closed'),
                             _('Disable new registrations.'));
        $this->unli();
        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');

        $this->out->elementStart('fieldset', array('id' => 'settings_admin_snapshots'));
        $this->out->element('legend', null, _('Snapshots'));
        $this->out->elementStart('ul', 'form_data');
        $this->li();
        $snapshot = array('web' => _('Randomly during Web hit'),
                          'cron' => _('In a scheduled job'),
                          'never' => _('Never'));
        $this->out->dropdown('run', _('Data snapshots'),
                             $snapshot, _('When to send statistical data to status.net servers'),
                             false, $this->value('run', 'snapshot'));
        $this->unli();

        $this->li();
        $this->input('frequency', _('Frequency'),
                     _('Snapshots will be sent once every N web hits'),
                     'snapshot');
        $this->unli();

        $this->li();
        $this->input('reporturl', _('Report URL'),
                     _('Snapshots will be sent to this URL'),
                     'snapshot');
        $this->unli();
        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');

        $this->out->elementStart('fieldset', array('id' => 'settings_admin_limits'));
        $this->out->element('legend', null, _('Limits'));
        $this->out->elementStart('ul', 'form_data');
        $this->li();
        $this->input('textlimit', _('Text limit'), _('Maximum number of characters for notices.'));
        $this->unli();

        $this->li();
        $this->input('dupelimit', _('Dupe limit'), _('How long users must wait (in seconds) to post the same thing again.'));
        $this->unli();
        $this->out->elementEnd('ul');
        $this->out->elementEnd('fieldset');
    }

    /**
     * Action elements
     *
     * @return void
     */

    function formActions()
    {
        $this->out->submit('submit', _('Save'), 'submit', null, _('Save site settings'));
    }
}