lelms-copyright/lelms-copyright.php

<?php
/**
 * Plugin Name: LeLMS Copyright
 * Plugin URI: https://wenpai.org/plugins/lelms-copyright
 * Description: Adds watermark with username and prevents unauthorized screenshots
 * Version: 1.1.8
 * Author: LeLMS.com
 * Author URI: https://lelms.com
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Requires at least: 5.9
 * Requires PHP: 7.4
 * Text Domain: lelms-copyright
 * Domain Path: /languages
 */

if (!defined('ABSPATH')) {
    exit;
}

define('LELMS_COPYRIGHT_VERSION', '1.1.8');
define('LELMS_COPYRIGHT_DIR_URL', plugin_dir_url(__FILE__));
define('LELMS_COPYRIGHT_DIR_PATH', plugin_dir_path(__FILE__));
define('LELMS_COPYRIGHT_BASENAME', plugin_basename(__FILE__));

class LELMS_Copyright {
    private $options;

    public function __construct() {
        load_plugin_textdomain('lelms-copyright', false, dirname(plugin_basename(__FILE__)) . '/languages/');

        $defaults = array(
            'watermark_opacity' => 0.1,
            'watermark_size' => 20,
            'watermark_spacing' => 150,
            'watermark_color' => '#000000',
            'watermark_angle' => -45,
            'enable_devtools_protection' => 'yes',
            'enable_print_protection' => 'yes',
            'enable_copy_protection' => 'yes',
            'enable_for_guests' => 'no',
            'enable_guest_protection_only' => 'no',
            'enable_guest_custom_watermark' => 'no',
            'enable_custom_watermark' => 'no',
            'custom_watermark_text' => '',
            'watermark_type' => 'username',
            'excluded_post_types' => array(),
            'excluded_roles' => array(),
        );

        $current_options = get_option('lelms_copyright_options', false);
        if ($current_options === false) {
            update_option('lelms_copyright_options', $defaults);
            $this->options = $defaults;
        } else {
            $this->options = wp_parse_args($current_options, $defaults);
        }

        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'));
        if (did_action('wp_body_open')) {
            add_action('wp_body_open', array($this, 'add_watermark_container'));
        } else {
            add_action('wp_footer', array($this, 'add_watermark_container'));
        }
        add_action('admin_menu', array($this, 'add_admin_menu'));
        add_action('admin_init', array($this, 'register_settings'));
        add_action('wp_ajax_lelms_reset_options', array($this, 'reset_options'));
    }

    public function add_admin_menu() {
        add_options_page(
            __('LeLMS Copyright Settings', 'lelms-copyright'),
            __('Copyright', 'lelms-copyright'),
            'manage_options',
            'lelms-copyright',
            array($this, 'options_page')
        );
    }

    public function register_settings() {
        register_setting('lelms_copyright', 'lelms_copyright_options', array($this, 'sanitize_options'));

        if (!isset($_GET['page']) || $_GET['page'] !== 'lelms-copyright') {
            return;
        }

        add_settings_section(
            'lelms_copyright_section',
            __('Watermark Settings', 'lelms-copyright'),
            array($this, 'section_description'),
            'lelms-copyright'
        );

        add_settings_section(
            'lelms_copyright_advanced_section',
            __('Advanced Settings', 'lelms-copyright'),
            array($this, 'advanced_section_description'),
            'lelms-copyright-advanced'
        );

        $this->add_settings_fields();
    }

    public function section_description() {
        echo '<p>' . esc_html__('Customize the watermark appearance and protection settings to secure your content.', 'lelms-copyright') . '</p>';
    }

    public function advanced_section_description() {
        echo '<p>' . esc_html__('Configure advanced options to exclude specific post types or user roles from watermark and protection.', 'lelms-copyright') . '</p>';
    }

    public function sanitize_options($input) {
        $sanitized = array();
        $defaults = array(
            'watermark_opacity' => 0.1,
            'watermark_size' => 20,
            'watermark_spacing' => 150,
            'watermark_color' => '#000000',
            'watermark_angle' => -45,
            'enable_devtools_protection' => 'yes',
            'enable_print_protection' => 'yes',
            'enable_copy_protection' => 'yes',
            'enable_for_guests' => 'no',
            'enable_guest_protection_only' => 'no',
            'enable_guest_custom_watermark' => 'no',
            'enable_custom_watermark' => 'no',
            'custom_watermark_text' => '',
            'watermark_type' => 'username',
            'excluded_post_types' => array(),
            'excluded_roles' => array(),
        );

        $sanitized['watermark_opacity'] = min(max(floatval($input['watermark_opacity']), 0), 1);
        $sanitized['watermark_size'] = absint($input['watermark_size']);
        $sanitized['watermark_spacing'] = absint($input['watermark_spacing']);
        $sanitized['watermark_color'] = sanitize_hex_color($input['watermark_color']);
        $sanitized['watermark_angle'] = intval($input['watermark_angle']);
        $sanitized['enable_devtools_protection'] = isset($input['enable_devtools_protection']) && $input['enable_devtools_protection'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_print_protection'] = isset($input['enable_print_protection']) && $input['enable_print_protection'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_copy_protection'] = isset($input['enable_copy_protection']) && $input['enable_copy_protection'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_for_guests'] = isset($input['enable_for_guests']) && $input['enable_for_guests'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_guest_protection_only'] = isset($input['enable_guest_protection_only']) && $input['enable_guest_protection_only'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_guest_custom_watermark'] = isset($input['enable_guest_custom_watermark']) && $input['enable_guest_custom_watermark'] === 'yes' ? 'yes' : 'no';
        $sanitized['enable_custom_watermark'] = isset($input['enable_custom_watermark']) && $input['enable_custom_watermark'] === 'yes' ? 'yes' : 'no';
        $sanitized['custom_watermark_text'] = sanitize_text_field($input['custom_watermark_text']);
        $sanitized['watermark_type'] = in_array($input['watermark_type'], ['none', 'username', 'nickname', 'email', 'timestamp']) ? $input['watermark_type'] : 'username';
        $sanitized['excluded_post_types'] = array_map('sanitize_key', (array) $input['excluded_post_types']);
        $sanitized['excluded_roles'] = array_map('sanitize_key', (array) $input['excluded_roles']);

        return wp_parse_args($sanitized, $defaults);
    }

    public function should_apply_protection() {
        $user = wp_get_current_user();
        $user_roles = $user && $user->roles ? $user->roles : array('guest');
        if (array_intersect($user_roles, (array) $this->options['excluded_roles'])) {
            return false;
        }

        $post_type = get_post_type() ?: 'page';
        if (in_array($post_type, (array) $this->options['excluded_post_types'])) {
            return false;
        }

        if (!is_user_logged_in()) {
            return $this->options['enable_for_guests'] === 'yes';
        }

        return true;
    }

    public function should_apply_watermark() {
        if (!$this->should_apply_protection()) {
            return false;
        }

        if ($this->options['watermark_type'] === 'none' && $this->options['enable_custom_watermark'] !== 'yes') {
            return false;
        }

        $is_guest = !is_user_logged_in();
        if ($is_guest) {
            return $this->options['enable_for_guests'] === 'yes' && $this->options['enable_guest_custom_watermark'] === 'yes';
        }
        
        return true;
    }

    public function add_watermark_container() {
        if ($this->should_apply_watermark()) {
            echo '<div id="lelms-watermark"></div>';
        }
    }

    private function add_settings_fields() {
        $fields = array(
            'watermark_opacity' => array(
                'title' => __('Watermark Opacity', 'lelms-copyright'),
                'type' => 'number',
                'attrs' => 'step="0.1" min="0" max="1"',
                'description' => __('Set the transparency of the watermark (0 = fully transparent, 1 = fully opaque).', 'lelms-copyright')
            ),
            'watermark_size' => array(
                'title' => __('Watermark Size (px)', 'lelms-copyright'),
                'type' => 'number',
                'description' => __('Define the font size of the watermark text in pixels.', 'lelms-copyright')
            ),
            'watermark_spacing' => array(
                'title' => __('Watermark Spacing (px)', 'lelms-copyright'),
                'type' => 'number',
                'description' => __('Set the distance between each watermark in pixels.', 'lelms-copyright')
            ),
            'watermark_color' => array(
                'title' => __('Watermark Color', 'lelms-copyright'),
                'type' => 'color',
                'description' => __('Choose the color of the watermark text.', 'lelms-copyright')
            ),
            'watermark_angle' => array(
                'title' => __('Watermark Angle', 'lelms-copyright'),
                'type' => 'number',
                'description' => __('Set the rotation angle of the watermark text in degrees (e.g., -45 for diagonal).', 'lelms-copyright')
            ),
            'watermark_type' => array(
                'title' => __('Watermark Type', 'lelms-copyright'),
                'type' => 'select',
                'description' => __('Choose the type of watermark to display for logged-in users (overridden by custom watermark if enabled).', 'lelms-copyright'),
                'options' => array(
                    'none' => __('No Watermark', 'lelms-copyright'),
                    'username' => __('Username', 'lelms-copyright'),
                    'nickname' => __('Nickname', 'lelms-copyright'),
                    'email' => __('Email', 'lelms-copyright'),
                    'timestamp' => __('Timestamp', 'lelms-copyright'),
                ),
            ),
            'enable_devtools_protection' => array(
                'title' => __('Enable DevTools Protection', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Prevent users from opening browser developer tools (e.g., F12 or Ctrl+Shift+I).', 'lelms-copyright')
            ),
            'enable_print_protection' => array(
                'title' => __('Enable Print Protection', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Block printing of the page to protect your content.', 'lelms-copyright')
            ),
            'enable_copy_protection' => array(
                'title' => __('Enable Copy Protection', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Disable copying of text and right-click menus outside of form fields.', 'lelms-copyright')
            ),
            'enable_for_guests' => array(
                'title' => __('Enable Guest Mode', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Enable protection features for non-logged-in users. Additional options will appear when checked.', 'lelms-copyright')
            ),
            'enable_guest_protection_only' => array(
                'title' => __('Enable Protection Only for Guests', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Apply only protection features (no watermark) to non-logged-in users.', 'lelms-copyright')
            ),
            'enable_guest_custom_watermark' => array(
                'title' => __('Show Custom Watermark for Guests', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Display the custom watermark text (defined below) for non-logged-in users.', 'lelms-copyright')
            ),
            'enable_custom_watermark' => array(
                'title' => __('Enable Custom Watermark', 'lelms-copyright'),
                'type' => 'checkbox',
                'description' => __('Use a custom watermark text instead of the selected watermark type.', 'lelms-copyright')
            ),
            'custom_watermark_text' => array(
                'title' => __('Custom Watermark Text', 'lelms-copyright'),
                'type' => 'text',
                'description' => __('Enter custom watermark text (applies if "Enable Custom Watermark" or "Show Custom Watermark for Guests" is checked). If empty, "LeLMS Copyright" will be used.', 'lelms-copyright')
            ),
        );

        foreach ($fields as $key => $field) {
            add_settings_field(
                $key,
                $field['title'],
                array($this, 'render_field'),
                'lelms-copyright',
                'lelms_copyright_section',
                array(
                    'key' => $key,
                    'type' => $field['type'],
                    'attrs' => isset($field['attrs']) ? $field['attrs'] : '',
                    'description' => $field['description'],
                    'options' => isset($field['options']) ? $field['options'] : array(),
                )
            );
        }

        $advanced_fields = array(
            'excluded_post_types' => array(
                'title' => __('Excluded Post Types', 'lelms-copyright'),
                'type' => 'checkbox_group',
                'description' => __('Select post types where watermark and protection should not apply.', 'lelms-copyright'),
                'options' => $this->get_public_post_types(),
            ),
            'excluded_roles' => array(
                'title' => __('Excluded User Roles', 'lelms-copyright'),
                'type' => 'checkbox_group',
                'description' => __('Select user roles exempt from watermark and protection.', 'lelms-copyright'),
                'options' => $this->get_user_roles(),
            ),
        );

        foreach ($advanced_fields as $key => $field) {
            add_settings_field(
                $key,
                $field['title'],
                array($this, 'render_field'),
                'lelms-copyright-advanced',
                'lelms_copyright_advanced_section',
                array(
                    'key' => $key,
                    'type' => $field['type'],
                    'description' => $field['description'],
                    'options' => $field['options'],
                )
            );
        }
    }

    private function get_public_post_types() {
        $post_types = get_post_types(array('public' => true), 'objects');
        $options = array();
        foreach ($post_types as $post_type) {
            $options[$post_type->name] = $post_type->label;
        }
        return $options;
    }

    private function get_user_roles() {
        global $wp_roles;
        $roles = $wp_roles->roles;
        $options = array();
        foreach ($roles as $role => $details) {
            $options[$role] = $details['name'];
        }
        $options['guest'] = __('Guest (Not Logged In)', 'lelms-copyright');
        return $options;
    }

    public function render_field($args) {
        $key = $args['key'];
        $type = $args['type'];
        $value = $this->options[$key];
        $attrs = isset($args['attrs']) ? $args['attrs'] : '';
        $description = isset($args['description']) ? $args['description'] : '';
        $options = isset($args['options']) ? $args['options'] : array();

        if ($type === 'checkbox') {
            printf(
                '<input type="checkbox" name="lelms_copyright_options[%s]" %s value="yes" %s>',
                esc_attr($key),
                $attrs,
                checked($value, 'yes', false)
            );
        } elseif ($type === 'select') {
            printf('<select name="lelms_copyright_options[%s]" %s>', esc_attr($key), $attrs);
            foreach ($options as $opt_value => $opt_label) {
                printf('<option value="%s" %s>%s</option>', esc_attr($opt_value), selected($value, $opt_value, false), esc_html($opt_label));
            }
            echo '</select>';
        } elseif ($type === 'checkbox_group') {
            $value = (array) $value;
            foreach ($options as $opt_value => $opt_label) {
                printf(
                    '<label><input type="checkbox" name="lelms_copyright_options[%s][]" value="%s" %s> %s</label><br>',
                    esc_attr($key),
                    esc_attr($opt_value),
                    checked(in_array($opt_value, $value), true, false),
                    esc_html($opt_label)
                );
            }
        } else {
            printf(
                '<input type="%s" name="lelms_copyright_options[%s]" value="%s" %s>',
                esc_attr($type),
                esc_attr($key),
                esc_attr($value),
                $attrs
            );
        }

        if ($description) {
            echo '<p class="description">' . esc_html($description) . '</p>';
        }
    }

    public function options_page() {
        ?>
        <div class="wrap">
            <h1><?php echo esc_html(get_admin_page_title()); ?>
                    <span style="font-size: 13px; padding-left: 10px;"><?php printf(esc_html__('Version: %s', 'lelms-copyright'), esc_html(LELMS_COPYRIGHT_VERSION)); ?></span>
                <a href="https://sharecms.com/document/lelms-copyright" target="_blank" class="button button-secondary" style="margin-left: 10px;"><?php esc_html_e('Document', 'lelms-copyright'); ?></a>
                <a href="https://sharecms.com/forums/" target="_blank" class="button button-secondary"><?php esc_html_e('Support', 'lelms-copyright'); ?></a>
            </h1>
<div class="card">
            <h2 class="nav-tab-wrapper">
                <a href="#settings" class="nav-tab nav-tab-active"><?php esc_html_e('Watermark Settings', 'lelms-copyright'); ?></a>
                <a href="#advanced" class="nav-tab"><?php esc_html_e('Advanced Settings', 'lelms-copyright'); ?></a>
                <a href="#about" class="nav-tab"><?php esc_html_e('About', 'lelms-copyright'); ?></a>
            </h2>

            <form method="post" action="options.php">
                <?php settings_fields('lelms_copyright'); ?>
                <div id="lelms-tabs-content">
                    <div id="settings-tab" class="lelms-tab-content">
                        <?php do_settings_sections('lelms-copyright'); ?>
                    </div>
                    <div id="advanced-tab" class="lelms-tab-content" style="display: none;">
                        <?php do_settings_sections('lelms-copyright-advanced'); ?>
                    </div>
                    <div id="about-tab" class="lelms-tab-content" style="display: none;">
                        <h3><?php esc_html_e('How to Use LeLMS Copyright', 'lelms-copyright'); ?></h3>
                        <p><?php esc_html_e('This plugin adds a watermark and protection features to your WordPress site. Here\'s how to configure it:', 'lelms-copyright'); ?></p>
                        <ul style="list-style: decimal; padding-left: 2em;">
                            <li><?php esc_html_e('Watermark Settings: Adjust opacity, size, spacing, color, and angle.', 'lelms-copyright'); ?></li>
                            <li><?php esc_html_e('Protection Features: Enable options to block DevTools, printing, and copying.', 'lelms-copyright'); ?></li>
                            <li><?php esc_html_e('Guest Mode: Enable protection and/or custom watermark for non-logged-in users.', 'lelms-copyright'); ?></li>
                            <li><?php esc_html_e('Custom Watermark: Enable and set a custom text.', 'lelms-copyright'); ?></li>
                        </ul>
                    </div>
                </div>
                <div class="submit-group">
                    <?php submit_button(__('Save Changes', 'lelms-copyright'), 'primary'); ?>
                    <button type="button" id="lelms-reset-defaults" class="button"><?php esc_html_e('Reset to Defaults', 'lelms-copyright'); ?></button>
                </div>
                </form>

          <style type="text/css">
            .nav-tab {
                border: 0px solid #c3c4c7;
                background: #ffffff;
            }
            .nav-tab.nav-tab-active {
                border-bottom: 2px solid #007cba;
                font-weight: 600;
                background: #f0f0f1;
            }
            .nav-tab:hover:not(.active) {
                background: #f0f0f1;
                border-bottom-color: #dcdcde;
            }
            .card {
              	background: #fff;
                border: 1px solid #ccd0d4;
                border-radius: 4px;
                max-width: unset;
                margin-top: 20px;
                padding: 20px;
            }
            .submit-group {
              	display: flex;
              	gap: 10px;
              	align-items: center;
              	margin-top: 20px;
            }
            p.submit {
              	padding-top: 5px;
            }
            </style>

            <script type="text/javascript">
                (function($) {
                    $(document).ready(function() {
                        $('.nav-tab').on('click', function(e) {
                            e.preventDefault();
                            var target = $(this).attr('href').substring(1);
                            $('.nav-tab').removeClass('nav-tab-active');
                            $(this).addClass('nav-tab-active');
                            $('.lelms-tab-content').hide();
                            $('#' + target + '-tab').show();
                        });

                        var $enableForGuests = $('input[name="lelms_copyright_options[enable_for_guests]"]');
                        var $guestProtectionOnly = $('input[name="lelms_copyright_options[enable_guest_protection_only]"]').closest('tr');
                        var $guestCustomWatermark = $('input[name="lelms_copyright_options[enable_guest_custom_watermark]"]').closest('tr');
                        var $enableCustomWatermark = $('input[name="lelms_copyright_options[enable_custom_watermark]"]');
                        var $customTextField = $('input[name="lelms_copyright_options[custom_watermark_text]"]').closest('tr');

                        function updateGuestFieldsVisibility() {
                            if ($enableForGuests.is(':checked')) {
                                $guestProtectionOnly.show();
                                $guestCustomWatermark.show();
                            } else {
                                $guestProtectionOnly.hide();
                                $guestCustomWatermark.hide();
                            }
                        }

                        function updateCustomTextVisibility() {
                            if ($enableCustomWatermark.is(':checked') || ($enableForGuests.is(':checked') && $('input[name="lelms_copyright_options[enable_guest_custom_watermark]"]').is(':checked'))) {
                                $customTextField.show();
                            } else {
                                $customTextField.hide();
                            }
                        }

                        $enableForGuests.on('change', function() {
                            updateGuestFieldsVisibility();
                            updateCustomTextVisibility();
                        });
                        $enableCustomWatermark.on('change', updateCustomTextVisibility);
                        $('input[name="lelms_copyright_options[enable_guest_custom_watermark]"]').on('change', updateCustomTextVisibility);

                        updateGuestFieldsVisibility();
                        updateCustomTextVisibility();

                        $('#lelms-reset-defaults').on('click', function() {
                            if (confirm('<?php esc_html_e('Are you sure you want to reset all settings to defaults?', 'lelms-copyright'); ?>')) {
                                $.ajax({
                                    url: '<?php echo admin_url('admin-ajax.php'); ?>',
                                    type: 'POST',
                                    data: {
                                        action: 'lelms_reset_options',
                                        nonce: '<?php echo wp_create_nonce('lelms_reset_nonce'); ?>'
                                    },
                                    success: function(response) {
                                        if (response.success) {
                                            alert('<?php esc_html_e('Settings have been reset to defaults. Please refresh the page to see the changes.', 'lelms-copyright'); ?>');
                                            location.reload();
                                        } else {
                                            alert('<?php esc_html_e('Failed to reset settings.', 'lelms-copyright'); ?>');
                                        }
                                    },
                                    error: function() {
                                        alert('<?php esc_html_e('An error occurred while resetting settings.', 'lelms-copyright'); ?>');
                                    }
                                });
                            }
                        });
                    });
                })(jQuery);
            </script>
        </div>
      </div>
        <?php
    }

    public function enqueue_scripts() {
        if ($this->should_apply_protection()) {
            $style_url = plugins_url('css/style.css', __FILE__);
            $script_url = plugins_url('js/watermark.js', __FILE__);

            if (!file_exists(plugin_dir_path(__FILE__) . 'css/style.css')) {
                error_log('LeLMS Copyright: CSS file not found at ' . plugin_dir_path(__FILE__) . 'css/style.css');
            }
            if (!file_exists(plugin_dir_path(__FILE__) . 'js/watermark.js')) {
                error_log('LeLMS Copyright: JS file not found at ' . plugin_dir_path(__FILE__) . 'js/watermark.js');
            }

            wp_enqueue_style('lelms-copyright', $style_url, array(), '1.1.5');
            wp_enqueue_script('lelms-copyright', $script_url, array('jquery'), '1.1.5', true);

            $user = is_user_logged_in() ? wp_get_current_user() : null;
            $watermark_text = '';
            $is_guest = !is_user_logged_in();

            if ($this->should_apply_watermark()) {
                if ($is_guest) {
                    $watermark_text = !empty($this->options['custom_watermark_text']) ? $this->options['custom_watermark_text'] : 'LeLMS Copyright';
                } else {
                    if ($this->options['enable_custom_watermark'] === 'yes') {
                        $watermark_text = !empty($this->options['custom_watermark_text']) ? $this->options['custom_watermark_text'] : 'LeLMS Copyright';
                    } else {
                        switch ($this->options['watermark_type']) {
                            case 'none':
                                $watermark_text = '';
                                break;
                            case 'username':
                                $watermark_text = $user ? '@' . $user->user_login : '';
                                break;
                            case 'nickname':
                                $watermark_text = $user ? $user->display_name : '';
                                break;
                            case 'email':
                                $watermark_text = $user ? $user->user_email : '';
                                break;
                            case 'timestamp':
                                $watermark_text = current_time('Y-m-d H:i:s');
                                break;
                        }
                    }
                }
            }

            wp_localize_script('lelms-copyright', 'lelmsData', array(
                'username' => $watermark_text,
                'options' => $this->options,
                'warningMessage' => __('This action is disabled on this site.', 'lelms-copyright'),
                'isGuest' => $is_guest,
            ));
        }
    }

    public function reset_options() {
        check_ajax_referer('lelms_reset_nonce', 'nonce');
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Permission denied');
        }

        $defaults = array(
            'watermark_opacity' => 0.1,
            'watermark_size' => 20,
            'watermark_spacing' => 150,
            'watermark_color' => '#000000',
            'watermark_angle' => -45,
            'enable_devtools_protection' => 'yes',
            'enable_print_protection' => 'yes',
            'enable_copy_protection' => 'yes',
            'enable_for_guests' => 'no',
            'enable_guest_protection_only' => 'no',
            'enable_guest_custom_watermark' => 'no',
            'enable_custom_watermark' => 'no',
            'custom_watermark_text' => '',
            'watermark_type' => 'username',
            'excluded_post_types' => array(),
            'excluded_roles' => array(),
        );

        update_option('lelms_copyright_options', $defaults);
        wp_send_json_success('Settings reset to defaults');
    }
}

new LELMS_Copyright();

require_once plugin_dir_path(__FILE__) . 'lib/plugin-update-checker/plugin-update-checker.php';
use YahnisElsts\PluginUpdateChecker\v5p3\PucFactory;

$lelmsUpdateChecker = PucFactory::buildUpdateChecker(
    'https://updates.weixiaoduo.com/lelms-copyright.json',
    __FILE__,
    'lelms-copyright'
);