<?php

class RocketChat {

    public static function getAgencyUserNames($agencyId) {
        $sql = "SELECT u.id, s.chat_login, u.last_name, u.first_name, u.middle_name, u.user_logo FROM chat_settings_user s, users u 
                  WHERE s.user_id = u.id and u.id in (SELECT us.id FROM users us WHERE us.id=$agencyId or us.id_manager=$agencyId or us.id_manager in (select usr.id from users usr where usr.id_manager=$agencyId) or us.id_manager in (select us.id from users us where us.id_manager in (select usrs.id from users usrs where usrs.id_manager=$agencyId))) ORDER BY u.last_name";
        $result = mysql_query($sql);

        $users = [];

        if (mysql_num_rows($result) > 0) {
            while ($usr = mysql_fetch_assoc($result)) {
                $users[] = $usr;
            }
        }

        return $users;
    }

    public static function getUserChatSettings($userId = 0) {
        if (!$userId) {
            $userId = $_SESSION['id'];
        }

        $sql = "SELECT * FROM `chat_settings_user` WHERE user_id = $userId";
        $res = mysql_query($sql);

        if (mysql_num_rows($res) > 0) {
            return mysql_fetch_assoc($res);
        } else {
            return 0;
        }
    }

    public static function getAgencyChatSettings($agencyId) {
        $sql = "SELECT * FROM `chat_settings_agency` WHERE agency_id = $agencyId";
        $res = mysql_query($sql);

        if (mysql_num_rows($res) > 0) {
            return mysql_fetch_assoc($res);
        } else {
            return 0;
        }
    }

    public static function createUserChannel($userOwnerId, $name, $userIds) {
        $url = RocketChat::getRocketChatUrl();

        //логиним пользователя, если он не залогинен
        $loginData = RocketChat::loginUser($userOwnerId);

        $userChatUsernames = [];

        foreach ($userIds as $id) {
            $result = RocketChat::getUserChatSettings($id);
            $userChatUsernames[] = $result['chat_login'];
        }

        return RocketChat::createChannel($name, $userChatUsernames, $url, $loginData['user']['chat_token'], $loginData['user']['chat_user_id']);
    }

    public static function getGroupUsers($groupId) {
        $url = RocketChat::getRocketChatUrl();

        //логиним пользователя, если он не залогинен
        $loginData = RocketChat::loginUser($_SESSION['id']);

        return RocketChat::getChannelMembers($groupId, $url, $loginData['user']['chat_token'], $loginData['user']['chat_user_id']);
    }

    public static function clearGroup($groupId) {
        return RocketChat::clearRoomHistory($groupId);
    }

    public static function removeUserFromChannel($groupId, $userId) {
        $url = RocketChat::getRocketChatUrl();

        //логиним пользователя, если он не залогинен
        $loginData = RocketChat::loginUser($_SESSION['id']);

        return RocketChat::removeUserFromGroup($groupId, $userId, $url, $loginData['user']['chat_token'], $loginData['user']['chat_user_id']);
    }

    public static function createAgencyChannel($agencyId, $name) {
        $url = RocketChat::getRocketChatUrl();
        $adminToken = RocketChat::getAdminToken();
        $adminUserId = RocketChat::getAdminUserId();

        $agency = new User;
        $agency->get($agencyId);

        $managers = User::getAllManagers($agencyId, true);
        $agents = User::getAllAgents($agencyId, true);

        $userChatUsernames = [];

        //создаем аккаунт для руководителя
        $result = RocketChat::createChatUser($agency, $url, $adminToken, $adminUserId);

        if ($result['success']) {
            //создаем аккаунты для менеджеров
            if ($managers) {
                foreach ($managers as $mngr) {
                    $manager = new User;
                    $manager->get($mngr['id']);
                    $result = RocketChat::createChatUser($manager, $url, $adminToken, $adminUserId);
                    if ($result['success']) {
                        $userChatUsernames[] = $result['user']['chat_login'];
                    }
                }
            }

            //создаем аккаунты для агентов
            if ($agents) {
                foreach ($agents as $agnt) {
                    $agent = new User;
                    $agent->get($agnt['id']);
                    $result = RocketChat::createChatUser($agent, $url, $adminToken, $adminUserId);
                    if ($result['success']) {
                        $userChatUsernames[] = $result['user']['chat_login'];
                    }
                }
            }

            //логиним руководителя
            $loginData = RocketChat::loginUser($agency->id);

            //создаем канал
            $channelSettings = RocketChat::getAgencyChatSettings($agency->id);
            if ($channelSettings && $channelSettings['general_channel_id']) {
                return ["success" => true, "settings" => $channelSettings, "error" => null];
            } else {
                $result = RocketChat::createChannel($name, $userChatUsernames, $url, $loginData['user']['chat_token'], $loginData['user']['chat_user_id']);

                if ($result['success']) {

                    $id = $result['channelId'];

                    if ($channelSettings) {
                        $sql = "UPDATE `chat_settings_agency` SET general_channel_id = '$id' WHERE agency_id = $agency->id";
                        mysql_query($sql);
                    } else {
                        $sql = "INSERT INTO `chat_settings_agency`(agency_id, general_channel_id) VALUES($agency->id, '$id')";
                        mysql_query($sql);
                    }

                    $channelSettings = RocketChat::getAgencyChatSettings($agency->id);
                    return ["success" => true, "settings" => $channelSettings, "error" => null];
                } else {
                    if ($channelSettings) {
                        $sql = "UPDATE `chat_settings_agency` SET error = '$result[error]' WHERE agency_id = $agency->id";
                        mysql_query($sql);
                    } else {
                        $sql = "INSERT INTO `chat_settings_agency`(agency_id, error) VALUES($agency->id, '$result[error]')";
                        mysql_query($sql);
                    }
                    return ["success" => false, "settings" => null, "error" => $result['error']];
                }
            }
        } else {
            return ["success" => false, "settings" => null, "error" => $result['error']];
        }
    }

    public static function createChannel($name, $users, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        if (!$baseUrl) {
            $baseUrl = RocketChat::getRocketChatUrl();
            $adminToken = RocketChat::getAdminToken();
            $adminUserId = RocketChat::getAdminUserId();
        }

        $url = $baseUrl . 'api/v1/channels.create';

        $post = array(
            'name' => $name,
            'members' => $users
        );

        $header = array('Content-type:application/json',
            'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

        $resp = RocketChat::sendCurl($url, json_encode($post), $header);

        $json = json_decode($resp, true);

        if ($json['status'] === 'error') {
            return ["success" => false, "channelId" => null, "error" => $json['message']];
        }

        if ($json['success']) {
            return ["success" => true, "channelId" => $json['channel']['_id'], "error" => null];
        } else {
            return ["success" => false, "channelId" => null, "error" => $json['error']];
        }
    }

    public static function loginUser($userId, $baseUrl = '') {
        $settings = RocketChat::getUserChatSettings($userId);

        if ($settings) {
            if ($settings['chat_token'] && $settings['chat_user_id']) {
                return ["success" => true, "user" => $settings, "error" => null];
            } else {
                if (!$baseUrl) {
                    $baseUrl = RocketChat::getRocketChatUrl();
                }

                $url = $baseUrl . 'api/v1/login';

                $post = array(
                    'user' => $settings['chat_login'],
                    'password' => $settings['chat_password']
                );

                $header = array('Content-type:application/json');

                $resp = RocketChat::sendCurl($url, json_encode($post), $header);

                $json = json_decode($resp, true);

                if ($json['status'] === 'success') {
                    $token = $json['data']['authToken'];
                    $chatUserId = $json['data']['userId'];

                    $sql = "UPDATE `chat_settings_user` SET chat_token = '$token', chat_user_id = '$chatUserId' WHERE user_id = $userId";
                    mysql_query($sql);

                    return ["success" => true, "user" => RocketChat::getUserChatSettings($userId), "error" => null];
                } else {
                    $sql = "UPDATE `chat_settings_user` SET error = '$resp' WHERE user_id = $userId";
                    mysql_query($sql);

                    return ["success" => false, "user" => null, "error" => $json['error']];
                }
            }
        } else {
            return ["success" => false, "user" => null, "error" => "Не найден логин и пароль для авторизации"];
        }
    }

    public static function deleteChatUser($userId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        $settings = RocketChat::getUserChatSettings($userId);
        if ($settings) {
            if (!$baseUrl) {
                $baseUrl = RocketChat::getRocketChatUrl();
                $adminToken = RocketChat::getAdminToken();
                $adminUserId = RocketChat::getAdminUserId();
            }

            $url = $baseUrl . 'api/v1/users.delete';

            $post = array(
                'username' => $settings['chat_login']
            );

            $header = array('Content-type:application/json',
                'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

            RocketChat::sendCurl($url, json_encode($post), $header);
        }
    }

    public static function checkUserInChannel($user, $roomId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        $settings = RocketChat::getUserChatSettings($user->id);
        if ($settings && $settings['chat_user_id']) {
            if (!$baseUrl) {
                $baseUrl = RocketChat::getRocketChatUrl();
                $adminToken = RocketChat::getAdminToken();
                $adminUserId = RocketChat::getAdminUserId();
            }
            $url = $baseUrl . 'api/v1/users.info?userId=' . $settings['chat_user_id'] . '&fields={%22userRooms%22:%201}';

            $header = array('Content-type:application/json',
                'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

            $resp = RocketChat::sendCurl($url, false, $header);

            $json = json_decode($resp, true);

            if ($json && $json['success'] == true) {
                $rooms = $json['user']['rooms'];

                if ($rooms) {
                    foreach ($rooms as $room) {
                        if ($room['rid'] === $roomId) {
                            return true;
                        }
                    }
                }
            }
        }

        return false;
    }

    public static function addUserToChannel($user, $roomId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        $settings = RocketChat::getUserChatSettings($user->id);
        if ($settings && $settings['chat_user_id']) {
            if (!$baseUrl) {
                $baseUrl = RocketChat::getRocketChatUrl();
                $adminToken = RocketChat::getAdminToken();
                $adminUserId = RocketChat::getAdminUserId();
            }
            $url = $baseUrl . 'api/v1/channels.invite';

            $post = array(
                'roomId' => $roomId,
                'userId' => $settings['chat_user_id']
            );

            $header = array('Content-type:application/json',
                'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);
            return RocketChat::sendCurl($url, json_encode($post), $header);
        }

        return 0;
    }

    public static function getChannelMembers($roomId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        if (!$baseUrl) {
            $baseUrl = RocketChat::getRocketChatUrl();
            $adminToken = RocketChat::getAdminToken();
            $adminUserId = RocketChat::getAdminUserId();
        }
        $url = $baseUrl . 'api/v1/channels.members?roomId='. $roomId;

        $header = array('Content-type:application/json',
            'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

        return RocketChat::sendCurl($url, false, $header);
    }

    public static function clearRoomHistory($roomId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        if (!$baseUrl) {
            $baseUrl = RocketChat::getRocketChatUrl();
            $adminToken = RocketChat::getAdminToken();
            $adminUserId = RocketChat::getAdminUserId();
        }
        $url = $baseUrl . 'api/v1/rooms.cleanHistory';

        $post = array(
            'roomId' => $roomId,
            'oldest' => '2010-09-30T13:42:25.304Z',
            'latest' => '2050-09-30T13:42:25.304Z'
        );

        $header = array('Content-type:application/json',
            'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

        return RocketChat::sendCurl($url, json_encode($post), $header);
    }

    public static function removeUserFromGroup($roomId, $userId, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        if (!$baseUrl) {
            $baseUrl = RocketChat::getRocketChatUrl();
            $adminToken = RocketChat::getAdminToken();
            $adminUserId = RocketChat::getAdminUserId();
        }
        $url = $baseUrl . 'api/v1/channels.kick';

        $post = array(
            'roomId' => $roomId,
            'userId' => $userId
        );

        $header = array('Content-type:application/json',
            'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

        return RocketChat::sendCurl($url, json_encode($post), $header);
    }

    public static function createChatUser($user, $baseUrl = '', $adminToken = '', $adminUserId = '') {
        $settings = RocketChat::getUserChatSettings($user->id);

        if (!$settings || !$settings['chat_login']) {
            if (!$baseUrl) {
                $baseUrl = RocketChat::getRocketChatUrl();
                $adminToken = RocketChat::getAdminToken();
                $adminUserId = RocketChat::getAdminUserId();
            }

            $url = $baseUrl . 'api/v1/users.create';

            $pass = generatePass();
            $username = slugify($user->last_name) . '_' . slugify($user->first_name) . '_' . rand(1, 9);

            $username = str_replace("ʹ", '', $username);

            $post = array(
                'email' => $user->email,
                'name' => $user->last_name . ' ' . $user->first_name,
                'password' => $pass,
                'username' => $username,
                'active' => true,
                'roles' => ['user'],
                'joinDefaultChannels' => false,
                'requirePasswordChange' => false,
                'sendWelcomeEmail' => false,
                'verified' => false
            );

            $header = array('Content-type:application/json',
                'X-Auth-Token: ' . $adminToken, 'X-User-Id: ' . $adminUserId);

            $resp = RocketChat::sendCurl($url, json_encode($post), $header);

            $json = json_decode($resp, true);

            if ($json['success']) {
                if ($settings) {
                    $sql = "UPDATE `chat_settings_user` SET chat_login = '$username', chat_password = '$pass' WHERE user_id = $user->id";
                    mysql_query($sql);
                } else {
                    $sql = "INSERT INTO `chat_settings_user`(user_id, chat_login, chat_password) VALUES($user->id, '$username','$pass')";
                    mysql_query($sql);
                }

                return ["success" => true, "user" => RocketChat::getUserChatSettings($user->id), "error" => null];
            } else {
                if ($settings) {
                    $sql = "UPDATE `chat_settings_user` SET error = '$resp' WHERE user_id = $user->id";
                    mysql_query($sql);
                } else {
                    $sql = "INSERT INTO `chat_settings_user`(user_id, error) VALUES($user->id, '$resp')";
                    mysql_query($sql);
                }

                return ["success" => false, "user" => null, "error" => $json['error']];
            }
        } else {
            return ["success" => true, "user" => $settings, "error" => null];
        }
    }

    public static function getAdminToken() {
        $sql = "SELECT value FROM `params` WHERE code = 'rocket_chat_admin_token'";
        $res = mysql_query($sql);
        return mysql_fetch_assoc($res)['value'];
    }

    public static function getAdminUserId() {
        $sql = "SELECT value FROM `params` WHERE code = 'rocket_chat_admin_user_id'";
        $res = mysql_query($sql);
        return mysql_fetch_assoc($res)['value'];
    }

    public static function getRocketChatUrl() {
        $sql = "SELECT value FROM `params` WHERE code = 'rocket_chat_url'";
        $res = mysql_query($sql);
        return mysql_fetch_assoc($res)['value'];
    }

    private static function sendCurl($url, $post = false, $header = false){
        $ch = curl_init($url);
        //debug
        curl_setopt($ch, CURLOPT_VERBOSE, true);
        curl_setopt($ch, CURLOPT_STDERR, fopen($_SERVER['DOCUMENT_ROOT'] . '/curl.txt', 'a+'));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        if ($header) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
            curl_setopt($ch, CURLOPT_HEADER,0);
        }
        if ($post) {
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
        }
        $response = curl_exec($ch);

        //if(curl_error($ch)) {
            //echo 'curl error is -' . curl_error($ch);
        //}

        curl_close($ch);
        return $response;
    }

}