<?php
    class UsersHelper {

        public function checkRightsToEdit($idUser) {
            global $database, $user;
            $userType = $user->getUserType($idUser);

            if($userType === USER_TYPES['BROKER']){
                return true;
            }

            return $idUser === $user->getUserId();
        }

        public function checkRightsToEditCompany($idCompany) {
            global $database, $user;
            $sql = "SELECT u.isCompanyAdmin
                    FROM ".TABLES['users']." u
                    WHERE u.id=".$user->getUserId()." AND u.idCompany=".$idCompany;
            $query = $database->query($sql);
            $row = $database->fetchArray($query);

            return $row ? $row['isCompanyAdmin'] === '1' : $user->getUserType() === USER_TYPES['BROKER'];
        }

        /**
         * validate user data from GUI
         * @param  Array $info             all information about the company to be inserted/updated
         * @return Array                   empty or error message
         */
        public function validateCompanyData($info){
            global $database;
            $data = [];

            foreach (get_object_vars($info) as $key => $value) {
                $info->{$key} = $database->escapeValue($value);
            }

            if(!isset($info->idCompany) || empty($info->idCompany)) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'ADD_COMPANY'
                ];

                return $data;
            }

            if(!isset($info->vatCode) || empty($info->vatCode)) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'ADD_VAT'
                ];

                return $data;
            }

            $checkMessage = $database->invalidLength('vatCode', $info->vatCode, 20);
            if($checkMessage){
                $data['messages'][] = $checkMessage;
            }

            if(!isset($info->companyName) || empty($info->companyName)) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'ADD_COPMANY_NAME'
                ];

                return $data;
            }

            $checkMessage = $database->invalidLength('companyName', $info->companyName, 100);
            if($checkMessage){
                $data['messages'][] = $checkMessage;
            }

            return $data;
        }

        /**
         * validate user data from GUI
         * @param  String $action          add or edit action
         * @param  Array $info             all information about the user to be inserted/updated
         * @param  Array $commercialLeads  all the commercial leads linked to a customer
         * @return Array                   empty or error message
         */
        public function validateUserData($action, $info, $commercialLeads = []) {
            global $database;
            $data = [];

            foreach (get_object_vars($info) as $key => $value) {
                $info->{$key} = $database->escapeValue($value);
            }

            if(!$info->idUserType) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'SELECT_USER_TYPE'
                ];

                return $data;
            }

            if(!isset($info->name) || empty($info->name)) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'ADD_NAME'
                ];

                return $data;
            }

            $checkMessage = $database->invalidLength('name', $info->name, 200);
            if($checkMessage){
                $data['messages'][] = $checkMessage;
            }

            if(!isset($info->phone) || empty($info->phone)) {
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'INVALID_PHONE_NUMBER'
                ];

                return $data;
            }
            if(!preg_match('/^([0-9\(\)\/\+ \-]*)$/', $info->phone)){
                $data['messages'][] = [
                    'code' => 'error',
                    'message' => 'INVALID_PHONE_NUMBER'
                ];
            }

            $checkMessage = $database->invalidLength('phone', $info->phone, 40);
            if($checkMessage){
                $data['messages'][] = $checkMessage;
            }

            if($action === 'add'){
                if($info->idUserType === '2' && empty($commercialLeads)) {
                    $data['messages'][] = [
                        'code' => 'error',
                        'message' => 'NO_COMMERCIAL_LEAD_LINK'
                    ];

                    return $data;
                }

                if(!isset($info->username) || empty($info->username)) {
                    $data['messages'][] = [
                        'code' => 'error',
                        'message' => 'ADD_USERNAME'
                    ];

                    return $data;
                }
                $checkMessage = $database->invalidLength('username', $info->username, 20);
                if($checkMessage){
                    $data['messages'][] = $checkMessage;
                }

                if(!preg_match('/^[a-zA-Z\d\.\-_]+$/',$info->username)) {
                    $data['messages'][] = [
                        'code' => 'error',
                        'message' => 'INVALID_USERNAME'
                    ];
                }

                $sql = "SELECT username
                            FROM ".TABLES['users']."
                        WHERE username='".$info->username."'
                        LIMIT 1";
                $result = $database->query($sql);
                if($database->numRows($result) > 0) {
                    $data['messages'][] = [
                        'code' => 'error',
                        'message' => 'USERNAME_EXISTS'
                    ];
                }

                if(!isset($info->mail) || empty($info->mail)) {
                    $data['messages'][] = [
                        'code' => 'error',
                        'message' => 'ADD_MAIL'
                    ];

                    return $data;
                }
                if(!filter_var($info->mail, FILTER_VALIDATE_EMAIL)){
                    $data['messages'][] = [
                            'code' => 'error',
                            'message' => 'INVALID_MAIL'
                    ];
                }
            }

            return $data;
        }
    }