<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social.  If not, see <http://www.gnu.org/licenses/>.

defined('GNUSOCIAL') || die();

/**
 * Table Definition for mention_url_profile
 */

class Mention_url_profile extends Managed_DataObject
{
    public $__table = 'mention_url_profile'; // table name
    public $profile_id;                      // int(4) not_null
    public $profileurl;                      // varchar(191) primary_key not_null not 255 because utf8mb4 takes more space

    public static function schemaDef()
    {
        return array(
            'fields' => array(
                'profile_id' => array('type' => 'int', 'not null' => true, 'description' => 'matches exactly one profile id'),
                'profileurl' => array('type' => 'varchar', 'not null' => true, 'length' => 191, 'description' => 'URL of the profile'),
            ),
            'primary key' => array('profileurl'),
            'foreign keys' => array(
                'mention_url_profile_profile_id_fkey' => array('profile', array('profile_id' => 'id')),
            ),
            'indexes' => array(
                'mention_url_profile_profile_id_idx' => array('profile_id'),
            ),
        );
    }

    public static function fromUrl($url, $depth = 0)
    {
        common_debug('MentionURL: trying to find a profile for ' . $url);

        $url = preg_replace('#https?://#', 'https://', $url);
        try {
            $profile = Profile::fromUri($url);
        } catch (UnknownUriException $ex) {}

        if (!($profile instanceof Profile)) {
            $profile = self::findProfileByProfileURL($url);
        }

        $url = str_replace('https://', 'http://', $url);
        if (!($profile instanceof Profile)) {
            try {
                $profile = Profile::fromUri($url);
            } catch (UnknownUriException $ex) {}
        }

        if (!($profile instanceof Profile)) {
            $profile = self::findProfileByProfileURL($url);
        }

        if (!($profile instanceof Profile)) {
            $hcard = mention_url_representative_hcard($url);
            if (!$hcard) {
                return null;
            }

            $mention_profile = new Mention_url_profile();
            $mention_profile->query('START TRANSACTION');

            $profile = new Profile();
            $profile->profileurl = $hcard['url'][0];
            $profile->fullname = $hcard['name'][0];
            preg_match('/\/([^\/]+)\/*$/', $profile->profileurl, $matches);
            if (!$hcard['nickname']) {
                $hcard['nickname'] = [$matches[1]];
            }
            $profile->nickname = $hcard['nickname'][0];
            $profile->created = common_sql_now();

            $mention_profile->profile_id = $profile->insert();
            if (!$mention_profile->profile_id) {
                $mention_profile->query('ROLLBACK');
                return null;
            }

            $mention_profile->profileurl = $profile->profileurl;
            if (!$mention_profile->insert()) {
                $mention_profile->query('ROLLBACK');
                if ($depth > 0) {
                    return null;
                } else {
                    return self::fromUrl($url, $depth+1);
                }
            } else {
                $mention_profile->query('COMMIT');
            }
        }

        return $profile;
    }

    protected static function findProfileByProfileURL($url)
    {
        $profile = Profile::getKV('profileurl', $url);
        if ($profile instanceof Profile) {
            $mention_profile = new Mention_url_profile();
            $mention_profile->profile_id = $profile->id;
            $mention_profile->profileurl = $profile->profileurl;
            $mention_profile->insert();
        }

        return $profile;
    }

    public function getProfile()
    {
        return Profile::getKV('id', $this->profile_id);
    }
}
