MDL-79920 factor_sms: Improvements to the sms setup

Unlike other configurable factors, sms factor is not yet compatible
with the newly introduced replace action.

admin/tool/mfa/factor/sms/classes/factor.php

@@ -85,6 +85,15 @@ class factor extends object_factor_base {
         return get_string('setupfactorbutton', 'factor_sms');
     }
 
+    /**
+     * Gets the string for manage button on preferences page.
+     *
+     * @return string
+     */
+    public function get_manage_string(): string {
+        return get_string('managefactorbutton', 'factor_sms');
+    }
+
     /**
      * Defines setup_factor form definition page for SMS Factor.
      *
@@ -349,13 +358,7 @@ class factor extends object_factor_base {
      * @return bool
      */
     public function show_setup_buttons(): bool {
-        global $DB, $USER;
-
-        // If there is already a factor setup, don't allow multiple (for now).
-        $record = $DB->get_record('tool_mfa',
-            ['userid' => $USER->id, 'factor' => $this->name, 'secret' => '', 'revoked' => 0]);
-
-        return empty($record);
+        return true;
     }
 
     /**

admin/tool/mfa/factor/sms/lang/en/factor_sms.php

@@ -23,7 +23,8 @@
  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$string['action:revoke'] = 'Revoke mobile phone number';
+$string['action:manage'] = 'Manage mobile phone number';
+$string['action:revoke'] = 'Remove mobile phone number';
 $string['addnumber'] = 'Mobile number';
 $string['clientnotfound'] = 'AWS service client not found. Client must be fully qualified classname e.g. \Aws\S3\S3Client.';
 $string['editphonenumber'] = 'Edit phone number';
@@ -35,15 +36,19 @@ $string['error:wrongphonenumber'] = 'The phone number you provided is not in a v
 $string['error:wrongverification'] = 'Wrong code. Try again.';
 $string['event:smssent'] = 'SMS message sent.';
 $string['event:smssentdescription'] = 'The user with ID {$a->userid} was sent a verification code via SMS. Information: {$a->debuginfo}';
-$string['info'] = '<p>Set up mobile phone to receive authentication code.</p>';
+$string['info'] = 'Have a verification code sent to the mobile number you choose.';
 $string['logindesc'] = 'SMS message containing a 6-digit code sent to mobile number {$a}';
 $string['loginoption'] = 'Have a code sent to your mobile phone';
 $string['loginskip'] = "I didn't receive a code";
 $string['loginsubmit'] = 'Continue';
+$string['managefactor'] = 'Manage SMS';
+$string['managefactorbutton'] = 'Manage';
+$string['manageinfo'] = 'You are using \'{$a}\' to authenticate.';
 $string['logintitle'] = 'Enter the verification code sent to your mobile';
 $string['phonehelp'] = 'Enter your mobile number (including country code) to receive a verification code.';
 $string['pluginname'] = 'SMS mobile phone';
 $string['privacy:metadata'] = 'The SMS mobile phone factor plugin does not store any personal data.';
+$string['revokefactorconfirmation'] = 'Remove \'{$a}\' SMS?';
 $string['settings:aws'] = 'AWS SNS';
 $string['settings:aws:key'] = 'Key';
 $string['settings:aws:key_help'] = 'Amazon API key credential.';
@@ -58,10 +63,10 @@ $string['settings:countrycode_help'] = 'The calling code without the leading + a
 See this link for a list of calling codes: {$a}';
 $string['settings:duration'] = 'Validity duration';
 $string['settings:duration_help'] = 'The period of time that the code is valid.';
-$string['settings:gateway'] = 'SMS gateway';
-$string['settings:gateway_help'] = 'The SMS provider for sending messages via.';
-$string['setupfactor'] = 'SMS setup';
-$string['setupfactorbutton'] = 'Set up SMS';
+$string['settings:gateway'] = 'SMS Gateway';
+$string['settings:gateway_help'] = 'The SMS provider you wish to send messages via';
+$string['setupfactor'] = 'Set up SMS';
+$string['setupfactorbutton'] = 'Set up';
 $string['setupsubmitcode'] = 'Save';
 $string['setupsubmitphone'] = 'Send code';
 $string['smsstring'] = '{$a->code} is your {$a->fullname} one-time security code.

admin/tool/mfa/factor/sms/tests/behat/factor_sms_login.feature

@@ -14,21 +14,12 @@ Feature: Login user with sms authentication factor
     # Set up user SMS factor in user preferences.
     When I follow "Preferences" in the user menu
     And I click on "Multi-factor authentication preferences" "link"
-    And I click on "Set up SMS" "button"
+    And I click on "Set up" "button"
     And I set the field "Mobile number" to "+34649709233"
     And I press "Send code"
     And I set the field "Enter code" with valid code
     Then I press "Save"
 
-  Scenario: Revoke factor
-    Given I click on "Revoke" "link"
-    And I should see "Are you sure you want to revoke factor?"
-    And I press "Revoke"
-    And I should see "successfully revoked"
-    When I log out
-    And I log in as "admin"
-    Then I should see "Unable to authenticate"
-
   Scenario: Login user successfully with sms verification
     Given I log out
     And I log in as "admin"

admin/tool/mfa/factor/sms/tests/behat/factor_sms_setup.feature

@@ -12,7 +12,7 @@ Feature: Set up SMS factor in user preferences
       | enabled | 1 | factor_sms |
     When I follow "Preferences" in the user menu
     And I click on "Multi-factor authentication preferences" "link"
-    And I click on "Set up SMS" "button"
+    And I click on "Set up" "button"
 
   Scenario: Phone number setup form validation
     Given I set the field "Mobile number" to "++5555sss"