Add form location settings

inc/class-settings.php

@@ -21,27 +21,66 @@ final class Settings {
     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_PAGE = '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';
+
     protected function __construct() {
         add_action('admin_menu', [$this, 'menu']);
         add_action('admin_init', [$this, 'init']);
     }
 
-    private function get(string $key = '') {
+    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;
     }
 
-    public function get_instance_url():string {
-        return !empty($value = (string) $this->get('instance_url')) ? $value : self::DEFAULT_INSTANCE_URL;
+    private static function is_checked(string $name, string $value):bool {
+        return in_array($value, (array) self::get($name));
     }
 
-    public function get_site_key():string {
-        return (string) $this->get('site_key');
+    public static function get_instance_url():string {
+        return !empty($value = (string) self::get('instance_url')) ? $value : self::DEFAULT_INSTANCE_URL;
     }
 
-    public function get_secret_key():string {
-        return (string) $this->get('secret_key');
+    public static function get_site_key():string {
+        return (string) self::get('site_key');
+    }
+
+    public static function get_secret_key():string {
+        return (string) self::get('secret_key');
+    }
+
+    public static function get_form_locations():array {
+        return (array) self::get('form_locations');
+    }
+
+    public static function is_login_page_enabled():bool {
+        return in_array(self::LOCATION_LOGIN_PAGE, self::get_form_locations());
+    }
+
+    public static function is_registration_page_enabled():bool {
+        return in_array(self::LOCATION_REGISTRATION_PAGE, self::get_form_locations());
+    }
+
+    public static function is_lost_password_page_enabled():bool {
+        return in_array(self::LOCATION_LOST_PASSWORD_PAGE, self::get_form_locations());
+    }
+
+    public static function is_login_form_enabled():bool {
+        return in_array(self::LOCATION_LOGIN_FORM, self::get_form_locations());
+    }
+
+    public static function is_comment_form_enabled():bool {
+        return in_array(self::LOCATION_COMMENT_FORM, self::get_form_locations());
+    }
+
+    public static function is_post_password_form_enabled():bool {
+        return in_array(self::LOCATION_POST_PASSWORD_FORM, self::get_form_locations());
     }
 
     public function menu() {
@@ -95,6 +134,35 @@ final class Settings {
                 'description' => Plugin::__('Provide your Cap secret key.'),
             ]
         );
+
+        add_settings_section(
+            'forms',
+            Plugin::__('CAPTCHA Forms'),
+            [$this, 'section'],
+            Plugin::get_id(),
+            [
+                'description' => Plugin::__('Define which forms you would like to secure with CAPTCHA.'),
+            ]
+        );
+
+        add_settings_field(
+            Plugin::get_id() . '_form_locations',
+            Plugin::__('Form locations'),
+            [$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_PAGE => 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'),
+                ],
+            ]
+        );
     }
 
     public function page() {
@@ -132,7 +200,7 @@ final class Settings {
                 $args['name']
             ),
             'id' => $args['name'],
-            'value' => (string) $this->get($args['name']),
+            'value' => (string) self::get($args['name']),
         ];
         if ($args['readonly'] ?? false) $attributes['readonly'] = 'readonly';
         if ($args['required'] ?? false) $attributes['required'] = 'required';
@@ -174,6 +242,24 @@ final class Settings {
         }
     }
 
+    public function checkbox_field(array $args):void {
+        if (empty($args['name'] ?? '') || !isset($options) || empty($options)) return;
+
+        echo implode('<br>', array_map(
+            fn (string $name, string $label):string => sprintf(
+                '<label><input type="checkbox" name="%s[%s][]" value="%s" %s>&nbsp;%s (%s)</label>',
+                esc_attr(Plugin::get_id()),
+                esc_attr($args['name']),
+                esc_attr($name),
+                checked(self::is_checked($args['name'], $name), display: false),
+                esc_html($label),
+                esc_html($name)
+            ),
+            array_keys($args['options']),
+            array_values($args['options'])
+        ));
+    }
+
     public static function get_url():string {
         return admin_url('options-general.php?page=' . Plugin::get_id());
     }