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<?php
/**
 * Laconica, the distributed open-source microblogging tool
 *
 * Change profile settings
 *
 * 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   Laconica
 * @author    Evan Prodromou <evan@controlyourself.ca>
 * @author    Zach Copley <zach@controlyourself.ca>
 * @copyright 2008-2009 Control Yourself, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link      http://laconi.ca/
 */

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

require_once INSTALLDIR.'/lib/accountsettingsaction.php';

/**
 * Change profile settings
 *
 * @category Settings
 * @package  Laconica
 * @author   Evan Prodromou <evan@controlyourself.ca>
 * @author   Zach Copley <zach@controlyourself.ca>
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link     http://laconi.ca/
 */

class ProfilesettingsAction extends AccountSettingsAction
{
    /**
     * Title of the page
     *
     * @return string Title of the page
     */

    function title()
    {
        return _('Profile settings');
    }

    /**
     * Instructions for use
     *
     * @return instructions for use
     */

    function getInstructions()
    {
        return _('You can update your personal profile info here '.
                  'so people know more about you.');
    }

    /**
     * Content area of the page
     *
     * Shows a form for uploading an avatar.
     *
     * @return void
     */

    function showContent()
    {
        $user = common_current_user();
        $profile = $user->getProfile();

        $this->elementStart('form', array('method' => 'post',
                                           'id' => 'form_settings_profile',
                                           'class' => 'form_settings',
                                           'action' => common_local_url('profilesettings')));
        $this->elementStart('fieldset');
        $this->element('legend', null, _('Profile information'));
        $this->hidden('token', common_session_token());

        # too much common patterns here... abstractable?

        $this->elementStart('ul', 'form_data');
        $this->elementStart('li');
        $this->input('nickname', _('Nickname'),
                     ($this->arg('nickname')) ? $this->arg('nickname') : $profile->nickname,
                     _('1-64 lowercase letters or numbers, no punctuation or spaces'));
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->input('fullname', _('Full name'),
                     ($this->arg('fullname')) ? $this->arg('fullname') : $profile->fullname);
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->input('homepage', _('Homepage'),
                     ($this->arg('homepage')) ? $this->arg('homepage') : $profile->homepage,
                     _('URL of your homepage, blog, or profile on another site'));
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->textarea('bio', _('Bio'),
                        ($this->arg('bio')) ? $this->arg('bio') : $profile->bio,
                        _('Describe yourself and your interests in 140 chars'));
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->input('location', _('Location'),
                     ($this->arg('location')) ? $this->arg('location') : $profile->location,
                     _('Where you are, like "City, State (or Region), Country"'));
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->input('tags', _('Tags'),
                     ($this->arg('tags')) ? $this->arg('tags') : implode(' ', $user->getSelfTags()),
                     _('Tags for yourself (letters, numbers, -, ., and _), comma- or space- separated'));
        $this->elementEnd('li');
        $this->elementStart('li');
        $language = common_language();
        $this->dropdown('language', _('Language'),
                        get_nice_language_list(), _('Preferred language'),
                        true, $language);
        $this->elementEnd('li');
        $timezone = common_timezone();
        $timezones = array();
        foreach(DateTimeZone::listIdentifiers() as $k => $v) {
            $timezones[$v] = $v;
        }
        $this->elementStart('li');
        $this->dropdown('timezone', _('Timezone'),
                        $timezones, _('What timezone are you normally in?'),
                        true, $timezone);
        $this->elementEnd('li');
        $this->elementStart('li');
        $this->checkbox('autosubscribe',
                        _('Automatically subscribe to whoever '.
                          'subscribes to me (best for non-humans)'),
                        ($this->arg('autosubscribe')) ?
                        $this->boolean('autosubscribe') : $user->autosubscribe);
        $this->elementEnd('li');
        $this->elementEnd('ul');
        $this->submit('save', _('Save'));

        $this->elementEnd('fieldset');
        $this->elementEnd('form');

    }

    /**
     * Handle a post
     *
     * Validate input and save changes. Reload the form with a success
     * or error message.
     *
     * @return void
     */

    function handlePost()
    {
        # CSRF protection

        $token = $this->trimmed('token');
        if (!$token || $token != common_session_token()) {
            $this->showForm(_('There was a problem with your session token. '.
                               'Try again, please.'));
            return;
        }

        $nickname = $this->trimmed('nickname');
        $fullname = $this->trimmed('fullname');
        $homepage = $this->trimmed('homepage');
        $bio = $this->trimmed('bio');
        $location = $this->trimmed('location');
        $autosubscribe = $this->boolean('autosubscribe');
        $language = $this->trimmed('language');
        $timezone = $this->trimmed('timezone');
        $tagstring = $this->trimmed('tags');

        # Some validation

        if (!Validate::string($nickname, array('min_length' => 1,
                                               'max_length' => 64,
                                               'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
            $this->showForm(_('Nickname must have only lowercase letters and numbers and no spaces.'));
            return;
        } else if (!User::allowed_nickname($nickname)) {
            $this->showForm(_('Not a valid nickname.'));
            return;
        } else if (!is_null($homepage) && (strlen($homepage) > 0) &&
                   !Validate::uri($homepage, array('allowed_schemes' => array('http', 'https')))) {
            $this->showForm(_('Homepage is not a valid URL.'));
            return;
        } else if (!is_null($fullname) && strlen($fullname) > 255) {
            $this->showForm(_('Full name is too long (max 255 chars).'));
            return;
        } else if (!is_null($bio) && strlen($bio) > 140) {
            $this->showForm(_('Bio is too long (max 140 chars).'));
            return;
        } else if (!is_null($location) && strlen($location) > 255) {
            $this->showForm(_('Location is too long (max 255 chars).'));
            return;
        }  else if (is_null($timezone) || !in_array($timezone, DateTimeZone::listIdentifiers())) {
            $this->showForm(_('Timezone not selected.'));
            return;
        } else if ($this->nicknameExists($nickname)) {
            $this->showForm(_('Nickname already in use. Try another one.'));
            return;
        } else if (!is_null($language) && strlen($language) > 50) {
            $this->showForm(_('Language is too long (max 50 chars).'));
            return;
        }

        if ($tagstring) {
            $tags = array_map('common_canonical_tag', preg_split('/[\s,]+/', $tagstring));
        } else {
            $tags = array();
        }

        foreach ($tags as $tag) {
            if (!common_valid_profile_tag($tag)) {
                $this->showForm(sprintf(_('Invalid tag: "%s"'), $tag));
                return;
            }
        }

        $user = common_current_user();

        $user->query('BEGIN');

        if ($user->nickname != $nickname ||
            $user->language != $language ||
            $user->timezone != $timezone) {

            common_debug('Updating user nickname from ' . $user->nickname . ' to ' . $nickname,
                         __FILE__);
            common_debug('Updating user language from ' . $user->language . ' to ' . $language,
                         __FILE__);
            common_debug('Updating user timezone from ' . $user->timezone . ' to ' . $timezone,
                         __FILE__);

            $original = clone($user);

            $user->nickname = $nickname;
            $user->language = $language;
            $user->timezone = $timezone;

            $result = $user->updateKeys($original);

            if ($result === false) {
                common_log_db_error($user, 'UPDATE', __FILE__);
                $this->serverError(_('Couldn\'t update user.'));
                return;
            } else {
                # Re-initialize language environment if it changed
                common_init_language();
            }
        }

        # XXX: XOR

        if ($user->autosubscribe ^ $autosubscribe) {

            $original = clone($user);

            $user->autosubscribe = $autosubscribe;

            $result = $user->update($original);

            if ($result === false) {
                common_log_db_error($user, 'UPDATE', __FILE__);
                $this->serverError(_('Couldn\'t update user for autosubscribe.'));
                return;
            }
        }

        $profile = $user->getProfile();

        $orig_profile = clone($profile);

        $profile->nickname = $user->nickname;
        $profile->fullname = $fullname;
        $profile->homepage = $homepage;
        $profile->bio = $bio;
        $profile->location = $location;
        $profile->profileurl = common_profile_url($nickname);

        common_debug('Old profile: ' . common_log_objstring($orig_profile), __FILE__);
        common_debug('New profile: ' . common_log_objstring($profile), __FILE__);

        $result = $profile->update($orig_profile);

        if (!$result) {
            common_log_db_error($profile, 'UPDATE', __FILE__);
            $this->serverError(_('Couldn\'t save profile.'));
            return;
        }

        # Set the user tags

        $result = $user->setSelfTags($tags);

        if (!$result) {
            $this->serverError(_('Couldn\'t save tags.'));
            return;
        }

        $user->query('COMMIT');

        common_broadcast_profile($profile);

        $this->showForm(_('Settings saved.'), true);
    }

    function nicknameExists($nickname)
    {
        $user = common_current_user();
        $other = User::staticGet('nickname', $nickname);
        if (!$other) {
           return false;
        } else {
            return $other->id != $user->id;
        }
    }
}