<?php
/**
 * @package ogre-captcha
 * @author cleverogre
 * @copyright 2026 CleverOgre
 * @license GLP-3.0-or-later
 * @version 1.2.5
 * @since 1.0.0
 */

namespace Ogre\Captcha;

use Ogre\Singleton;
use Ogre\Captcha as Plugin;

defined('ABSPATH') || exit;

final class Settings {
    use Singleton;

    const CAPABILITY = 'manage_options';
    const DEFAULT_INSTANCE_URL = 'https://captcha.cleverogre.com';

    public const LOCATION_LOGIN_PAGE = 'login_page';
    public const LOCATION_REGISTRATION_PAGE = 'registration_page';
    public const LOCATION_LOST_PASSWORD_FORM = 'lost_password_page';
    public const LOCATION_LOGIN_FORM = 'login_form';
    public const LOCATION_COMMENT_FORM = 'comment_form';
    public const LOCATION_POST_PASSWORD_FORM = 'post_password_form';
    public const WP_LOCATIONS = [
        self::LOCATION_LOGIN_PAGE,
        self::LOCATION_REGISTRATION_PAGE,
        self::LOCATION_LOST_PASSWORD_FORM,
        self::LOCATION_LOGIN_FORM,
        self::LOCATION_COMMENT_FORM,
        self::LOCATION_POST_PASSWORD_FORM,
    ];

    public const LOCATION_WC_LOGIN = 'wc_login';
    public const LOCATION_WC_LOST_PASSWORD = 'wc_lost_password';
    public const LOCATION_WC_REGISTER = 'wc_register';
    public const LOCATION_WC_CHECKOUT = 'wc_checkout';
    public const WC_LOCATIONS = [
        self::LOCATION_WC_LOGIN,
        self::LOCATION_WC_LOST_PASSWORD,
        self::LOCATION_WC_REGISTER,
        self::LOCATION_WC_CHECKOUT,
    ];

    public const ALL_LOCATIONS = [
        self::LOCATION_LOGIN_PAGE,
        self::LOCATION_REGISTRATION_PAGE,
        self::LOCATION_LOST_PASSWORD_FORM,
        self::LOCATION_LOGIN_FORM,
        self::LOCATION_COMMENT_FORM,
        self::LOCATION_POST_PASSWORD_FORM,
        self::LOCATION_WC_LOGIN,
        self::LOCATION_WC_LOST_PASSWORD,
        self::LOCATION_WC_REGISTER,
        self::LOCATION_WC_CHECKOUT,
    ];

    public const WIDGET_TYPE_STANDARD = 'standard';
    public const WIDGET_TYPE_FLOATING = 'floating';
    public const WIDGET_TYPES = [
        self::WIDGET_TYPE_STANDARD,
        self::WIDGET_TYPE_FLOATING,
    ];

    protected function __construct() {
        add_action('admin_menu', [$this, 'menu']);
        add_action('admin_init', [$this, 'init']);
    }

    private static function get(string $key = '') {
        $data = (array) get_option(Plugin::get_id(), []);
        if (!empty($key)) return array_key_exists($key, $data) ? $data[$key] : null;
        return $data;
    }

    private static function has(string $key):bool {
        return array_key_exists($key, self::get());
    }

    private static function set(string $key, $value = null):void {
        $data = self::get();
        if (is_null($value) && isset($data[$key])) {
            unset($data[$key]);
        } else {
            $data[$key] = $value;
        }
        update_option(Plugin::get_id(), $data);
    }

    private static function is_checked(string $name, string $value, string|null $default = null):bool {
        if (!is_null($default) && !self::has($name)) return $value == $default;
        return in_array($value, (array) self::get($name));
    }

    public static function get_instance_url(string $path = ''):string {
        $url = (string) self::get('instance_url');
        if (empty($url)) $url = self::DEFAULT_INSTANCE_URL;
        if (!wp_http_validate_url($url)) return '';
        if (!empty($path)) {
            $url = sprintf(
                '%s/%s',
                untrailingslashit(Settings::get_instance_url()),
                $path
            );
        }
        return $url;
    }

    public static function set_instance_url(string $value):bool {
        if (!wp_http_validate_url($value)) return false;
        self::set('instance_url', $value);
        return true;
    }

    public static function get_site_key():string {
        return (string) self::get('site_key');
    }

    public static function set_site_key(string $value):bool {
        self::set('site_key', $value);
        return true;
    }

    public static function get_secret_key():string {
        return (string) self::get('secret_key');
    }

    public static function set_secret_key(string $value):bool {
        self::set('secret_key', $value);
        return true;
    }

    public static function is_connected():bool {
        return !empty(self::get_site_key()) && !empty(self::get_secret_key());
    }

    public static function get_form_locations():array {
        $form_locations = (array) self::get('form_locations');
        if (Plugin::is_woocommerce_active()) {
            $form_locations = array_merge(
                $form_locations,
                (array) self::get('wc_form_locations')
            );
        }
        return $form_locations;
    }

    public static function is_form_location_enabled(string $name):bool {
        return in_array($name, self::get_form_locations());
    }

    public static function set_form_location(string $name, bool $enabled):bool {
        if (in_array($name, self::WP_LOCATIONS)) {
            $key = 'form_locations';
        } else if (in_array($name, self::WC_LOCATIONS)) {
            $key = 'wc_form_locations';
        } else {
            return false;
        }

        $value = (array) self::get($key);
        if (!!$enabled && !in_array($name, $value)) {
            $value[] = $name;
        } else if (!$enabled && in_array($name, $value)) {
            unset($value[array_search($name, $value)]);
        }
        self::set($key, $value);

        return true;
    }

    public static function is_login_page_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_LOGIN_PAGE);
    }

    public static function is_registration_page_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_REGISTRATION_PAGE);
    }

    public static function is_lost_password_form_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_LOST_PASSWORD_FORM);
    }

    public static function is_login_form_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_LOGIN_FORM);
    }

    public static function is_comment_form_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_COMMENT_FORM);
    }

    public static function is_post_password_form_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_POST_PASSWORD_FORM);
    }

    public static function is_wc_login_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_WC_LOGIN);
    }

    public static function is_wc_lost_password_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_WC_LOST_PASSWORD);
    }

    public static function is_wc_register_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_WC_REGISTER);
    }

    public static function is_wc_checkout_enabled():bool {
        return self::is_form_location_enabled(self::LOCATION_WC_CHECKOUT);
    }

    public static function get_widget_type():string {
        $value = self::get('widget_type');
        if (is_array($value) && !empty($value)) $value = array_values($value)[0];
        if (!is_string($value)) $value = '';
        return in_array($value, self::WIDGET_TYPES) ? $value : self::WIDGET_TYPE_STANDARD;
    }

    public static function is_widget_floating():bool {
        return self::get_widget_type() === self::WIDGET_TYPE_FLOATING;
    }

    public static function set_widget_type(string $value):bool {
        if (!in_array($value, self::WIDGET_TYPES)) return false;
        self::set('widget_type', $value);
        return true;
    }

    public function menu() {
        if (!current_user_can(self::CAPABILITY)) return;
        add_options_page(
            sprintf(
                Plugin::__('%s Settings'),
                Plugin::get_title()
            ),
            Plugin::__('CAPTCHA'),
            self::CAPABILITY,
            Plugin::get_id(),
            [$this, 'page']
        );
    }

    public function init() {
        register_setting(Plugin::get_id(), Plugin::get_id());

        add_settings_section(
            'default',
            Plugin::__('Cap API Credentials'),
            [$this, 'section'],
            Plugin::get_id(),
            [
                'description' => Plugin::__('The configuration settings for your Cap CAPTCHA API connection.'),
            ]
        );

        add_settings_field(
            Plugin::get_id() . '_instance_url',
            Plugin::__('Instance URL'),
            [$this, 'field'],
            Plugin::get_id(),
            args: [
                'name' => 'instance_url',
                'placeholder' => Plugin::__('https://captcha.cleverogre.com/'),
                'description' => Plugin::__('Provide the base URL to an instance of Cap. Defaults to CleverOgre\'s CAPTCHA server.'),
            ]
        );

        add_settings_field(
            Plugin::get_id() . '_site_key',
            Plugin::__('Site key'),
            [$this, 'field'],
            Plugin::get_id(),
            args: [
                'name' => 'site_key',
                'description' => Plugin::__('Provide your Cap site key.'),
                'attributes' => [
                    'autocomplete' => 'off',
                ],
            ]
        );

        add_settings_field(
            Plugin::get_id() . '_secret_key',
            Plugin::__('Secret key'),
            [$this, 'field'],
            Plugin::get_id(),
            args: [
                'name' => 'secret_key',
                'description' => Plugin::__('Provide your Cap secret key.'),
                'type' => 'password',
                'attributes' => [
                    'autocomplete' => 'off',
                ],
            ]
        );

        add_settings_section(
            'forms',
            Plugin::__('Forms'),
            [$this, 'section'],
            Plugin::get_id(),
            [
                'description' => Plugin::__('Define which forms you would like to secure with Cap.'),
            ]
        );

        add_settings_field(
            Plugin::get_id() . '_form_locations',
            Plugin::__('WordPress form locations'),
            [$this, 'checkbox_field'],
            Plugin::get_id(),
            'forms',
            [
                'name' => 'form_locations',
                'options' => [
                    self::LOCATION_LOGIN_PAGE => Plugin::__('Login page'),
                    self::LOCATION_REGISTRATION_PAGE => Plugin::__('Registration page'),
                    self::LOCATION_LOST_PASSWORD_FORM => Plugin::__('Lost password page'),
                    self::LOCATION_LOGIN_FORM => Plugin::__('Custom login form'),
                    self::LOCATION_COMMENT_FORM => Plugin::__('Comment form'),
                    self::LOCATION_POST_PASSWORD_FORM => Plugin::__('Password-protected posts and pages'),
                ],
                'select_all' => true,
                'description' => Plugin::__('Custom login form requires login page to also be enabled.'),
            ]
        );

        if (Plugin::is_woocommerce_active()) {
            add_settings_field(
                Plugin::get_id() . '_wc_form_locations',
                Plugin::__('WooCommerce form locations'),
                [$this, 'checkbox_field'],
                Plugin::get_id(),
                'forms',
                [
                    'name' => 'wc_form_locations',
                    'options' => [
                        self::LOCATION_WC_LOGIN => Plugin::__('Login form'),
                        self::LOCATION_WC_LOST_PASSWORD => Plugin::__('Lost password form'),
                        self::LOCATION_WC_REGISTER => Plugin::__('Register form'),
                        self::LOCATION_WC_CHECKOUT => Plugin::__('Checkout form'),
                    ],
                    'select_all' => true,
                ]
            );
        }

        add_settings_section(
            'widget',
            Plugin::__('Widget'),
            [$this, 'section'],
            Plugin::get_id(),
            [
                'description' => Plugin::__('Change how the Cap widget is displayed on the frontend.'),
            ]
        );

        add_settings_field(
            Plugin::get_id() . '_widget_type',
            Plugin::__('Widget type'),
            [$this, 'checkbox_field'],
            Plugin::get_id(),
            'widget',
            [
                'type' => 'radio',
                'name' => 'widget_type',
                'options' => [
                    self::WIDGET_TYPE_STANDARD => Plugin::__('Standard (default)'),
                    self::WIDGET_TYPE_FLOATING => Plugin::__('Floating'),
                ],
                'default' => self::WIDGET_TYPE_STANDARD,
                'description' => Plugin::__('Not sure which type you want to use? <a href="https://trycap.dev/guide/demo.html" target="_blank">View the demo</a> to try them out.'),
            ]
        );


    }

    public function page() {
        if (!current_user_can(self::CAPABILITY)) return;

        // Show error/update messages
        settings_errors(Plugin::get_id());
?>
<div class="wrap">
    <h1><?php echo esc_html(get_admin_page_title()); ?></h1>
    <form action="options.php" method="post"><?php
        settings_fields(Plugin::get_id());
        do_settings_sections(Plugin::get_id());
        submit_button();
    ?></form>
</div>
<?php
    }

    public function section(array $args):void {
        if (!empty($args['description'] ?? '')) {
            echo wpautop($args['description']);
        }
    }

    public function field(array $args):void {
        if (empty($args['name'] ?? '')) return;
        
        $attributes = [
            'type' => $args['type'] ?? 'text',
            'class' => 'regular-text',
            'name' => sprintf(
                '%s[%s]',
                Plugin::get_id(),
                $args['name']
            ),
            'id' => $args['name'],
            'value' => (string) self::get($args['name']),
        ];
        if ($args['readonly'] ?? false) $attributes['readonly'] = 'readonly';
        if ($args['required'] ?? false) $attributes['required'] = 'required';

        if (!empty($args['placeholder'] ?? '')) {
            $attributes['placeholder'] = $args['placeholder'];
        }

        if (!empty($args['description'] ?? '')) {
            $attributes['describedby'] = $args['name'] . '-description';
        }

        if (isset($args['attributes']) && is_array($args['attributes'])) {
            $attributes = array_merge($attributes, $args['attributes']);
        }

        printf(
            '<input %s />',
            implode(
                ' ',
                array_map(
                    fn (string $name, string $value): string => sprintf(
                        '%s="%s"',
                        $name,
                        esc_attr($value)
                    ),
                    array_keys($attributes),
                    array_values($attributes)
                )
            )
        );

        if (!empty($args['description'] ?? '')) {
            printf(
                '<p class="description" id="%s-description">%s</p>',
                esc_attr($args['name']),
                nl2br($args['description'])
            );
        }
    }

    public function checkbox_field(array $args):void {
        if (empty($args['name'] ?? '') || empty($args['options'] ?? [])) return;

        if (!!($args['select_all'] ?? false) && ($args['type'] ?? 'checkbox') == 'checkbox') {
            printf(
                '<label><input type="checkbox" onClick="document.getElementsByName(\'%s[%s][]\').forEach(element => { element.checked = this.checked });">&nbsp;%s</label><br>',
                esc_attr(Plugin::get_id()),
                esc_attr($args['name']),
                Plugin::esc_html__('Select All')
            );
        }

        echo implode('<br>', array_map(
            fn (string $name, string $label):string => sprintf(
                '<label><input type="%s" name="%s[%s]%s" value="%s" %s>&nbsp;%s</label>',
                esc_attr($args['type'] ?? 'checkbox'),
                esc_attr(Plugin::get_id()),
                esc_attr($args['name']),
                (($args['type'] ?? 'checkbox') ? '[]' : ''),
                esc_attr($name),
                checked(self::is_checked($args['name'], $name, $args['default'] ?? null), display: false),
                esc_html($label)
            ),
            array_keys($args['options']),
            array_values($args['options'])
        ));

        if (!empty($args['description'] ?? '')) {
            printf(
                '<p class="description" id="%s-description">%s</p>',
                esc_attr($args['name']),
                nl2br($args['description'])
            );
        }
    }

    public static function get_url():string {
        return admin_url('options-general.php?page=' . Plugin::get_id());
    }

}

Settings::instance();