<?php
/**
 *
 * SugarCRM Community Edition is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2013 SugarCRM Inc.
 *
 * SuiteCRM is an extension to SugarCRM Community Edition developed by SalesAgility Ltd.
 * Copyright (C) 2011 - 2022 SalesAgility Ltd.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * 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 or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 *
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo and "Supercharged by SuiteCRM" logo. If the display of the logos is not
 * reasonably feasible for technical reasons, the Appropriate Legal Notices must
 * display the words "Powered by SugarCRM" and "Supercharged by SuiteCRM".
 */

if (!defined('sugarEntry') || !sugarEntry) {
    die('Not A Valid Entry Point');
}

/**
 * OAuth connection
 */
#[\AllowDynamicProperties]
class ExternalOAuthConnection extends Basic
{
    public $module_dir = 'ExternalOAuthConnection';
    public $object_name = 'ExternalOAuthConnection';
    public $table_name = 'external_oauth_connections';
    public $disable_row_level_security = true;

    public $client_id;
    public $client_secret;
    public $token_type;
    public $expires_in;
    public $access_token;
    public $refresh_token;
    public $type;


    /**
     * @inheritDoc
     */
    public function retrieve($id = -1, $encode = true, $deleted = true)
    {
        $result = parent::retrieve($id, $encode, $deleted);

        if (!empty($result) && !$this->hasAccessToPersonalAccount()) {
            $this->logPersonalAccountAccessDenied('retrieve');

            return null;
        }

        return $result;
    }

    /**
     * @inheritDoc
     */
    public function save($check_notify = false)
    {
        if (!$this->hasAccessToPersonalAccount()) {
            $this->logPersonalAccountAccessDenied('save');
            throw new RuntimeException('Access Denied');
        }

        $this->keepWriteOnlyFieldValues();


        return parent::save($check_notify);
    }

    /**
     * Check if user has access to personal account
     * @return bool
     */
    public function hasAccessToPersonalAccount(): bool
    {
        global $current_user;

        if (is_admin($current_user)) {
            return true;
        }

        if (empty($this->type)) {
            return true;
        }

        if ($this->type !== 'personal') {
            return true;
        }

        if (empty($this->created_by)) {
            return true;
        }

        if ($this->created_by === $current_user->id) {
            return true;
        }


        return false;
    }

    /**
     * Log personal account access denied
     * @param string $action
     * @return void
     */
    public function logPersonalAccountAccessDenied(string $action): void
    {
        global $log, $current_user;

        $log->fatal("ExternalOAuthConnection | Access denied. Non-admin user trying to access personal account. Action: '" . $action . "' | Current user id: '" . $current_user->id . "' | record: '" . $this->id . "'");
    }

    /**
     * @inheritDoc
     */
    public function bean_implements($interface)
    {
        if ($interface === 'ACL') {
            return true;
        }

        return false;
    }

    /**
     * @inheritDoc
     */
    public function ACLAccess($view, $is_owner = 'not_set', $in_group = 'not_set')
    {
        global $current_user;

        $isNotAllowAction = $this->isNotAllowedAction($view);
        if ($isNotAllowAction === true) {
            return false;
        }

        if (!$this->hasAccessToPersonalAccount()) {
            $this->logPersonalAccountAccessDenied("ACLAccess-$view");

            return false;
        }

        $isPersonal = $this->type === 'personal';
        $isAdmin = is_admin($current_user);

        if ($isPersonal === true && $this->hasAccessToPersonalAccount()) {
            return true;
        }

        $isAdminOnlyAction = $this->isAdminOnlyAction($view);
        if (!$isPersonal && !$isAdmin && $isAdminOnlyAction === true) {
            return false;
        }

        $hasActionAclsDefined = has_group_action_acls_defined('ExternalOAuthConnection', 'view');
        $isSecurityGroupBasedAction = $this->isSecurityGroupBasedAction($view);

        if (!$isPersonal && !$isAdmin && !$hasActionAclsDefined && $isSecurityGroupBasedAction === true) {
            return false;
        }


        return parent::ACLAccess($view, $is_owner, $in_group);
    }

    /**
     * @inheritDoc
     */
    public function create_new_list_query(
        $order_by,
        $where,
        $filter = array(),
        $params = array(),
        $show_deleted = 0,
        $join_type = '',
        $return_array = false,
        $parentbean = null,
        $singleSelect = false,
        $ifListForExport = false
    ) {
        global $current_user, $db;

        $ret_array = parent::create_new_list_query(
            $order_by,
            $where,
            $filter,
            $params,
            $show_deleted,
            $join_type,
            true,
            $parentbean,
            $singleSelect,
            $ifListForExport
        );

        if (is_array($ret_array) && !empty($ret_array['where'])) {
            $tableName = $db->quote($this->table_name);
            $currentUserId = $db->quote($current_user->id);

            $showGroupRecords = "($tableName.type IS NULL) OR ($tableName.type != 'personal' ) OR ";

            $hasActionAclsDefined = has_group_action_acls_defined('ExternalOAuthConnection', 'list');

            if($hasActionAclsDefined === false && !is_admin($current_user)) {
                $showGroupRecords = '';
            }

            $ret_array['where'] = $ret_array['where'] . " AND ( $showGroupRecords ($tableName.type = 'personal' AND $tableName.created_by = '$currentUserId') )";
        }

        if ($return_array) {
            return $ret_array;
        }

        return $ret_array['select'] . $ret_array['from'] . $ret_array['where'] . $ret_array['order_by'];
    }

    /**
     * Do not clear write only fields
     * @return void
     */
    protected function keepWriteOnlyFieldValues(): void
    {
        if (empty($this->fetched_row)) {
            return;
        }

        foreach ($this->field_defs as $field => $field_def) {
            if (empty($field_def['display']) || $field_def['display'] !== 'writeonly') {
                continue;
            }

            if (empty($this->fetched_row[$field])) {
                continue;
            }

            if (!empty($this->$field)) {
                continue;
            }

            $this->$field = $this->fetched_row[$field];
        }
    }

    /**
     * Check if its admin only action
     * @param string $view
     * @return bool
     */
    protected function isAdminOnlyAction(string $view): bool
    {
        $adminOnlyAction = ['edit', 'delete', 'editview', 'save'];
        return in_array(strtolower($view), $adminOnlyAction);
    }

    /**
     * Check if its a security based action
     * @param string $view
     * @return bool
     */
    protected function isSecurityGroupBasedAction(string $view): bool
    {
        $securityBasedActions = ['detail', 'detailview', 'view'];
        return in_array(strtolower($view), $securityBasedActions);
    }

    /**
     * Get not allowed action
     * @param string $view
     * @return bool
     */
    protected function isNotAllowedAction(string $view): bool
    {
        $notAllowed = ['export', 'import', 'massupdate', 'duplicate'];
        return in_array(strtolower($view), $notAllowed);
    }
}