PluggableAuth Mediawiki auth plugin for URY

extension.json

{
        "name": "URYAuthenticator",
        "version": "1.0.0",
        "author": [
                "Lloyd Wallis",
                "Charles Pigott"
        ],
        "url": "http://ury.org.uk/",
        "type": "other",
        "config": {
                "PluggableAuth_Class": "URYAuthenticator"
        },
        "AutoloadClasses": {
                "URYAuthenticator": "URYAuthenticatorPluggable.php"
        },
        "MessagesDirs": {
                "URYAuthentictor": ["i18n"]
        },
        "requires": {
                "MediaWiki": ">= 1.27.0",
                 "extensions": {
                         "PluggableAuth": ">= 5.1"
                 }
        },
        "manifest_version": 1
}

i18n-en.json

{
    "@metadata": {
        "authors": [
            "Charles Pigott"
        ]
    },
    "no-user": "No user matching the given MyRadio credentials",
    "myradio-error": "Unknown error in MyRadio backend"
}

URYAuthenticatorPluggable.php

<?php

use \MediaWiki\Auth\AuthManager;

class URYAuthenticator extends PluggableAuth {

    const API_KEY = '<snip>';
    const API_ROOT = 'https://ury.org.uk/api/';

    private function myradioAPIRequest($path, $params = [], $method = 'GET') {
        $url = URYAuthenticator::API_ROOT . $path;
        $params['api_key'] = URYAuthenticator::API_KEY;

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

        $result = curl_exec($ch);
        curl_close($ch);
        if ($result === false) {
            return curl_error($ch);
        }
        return json_decode($result, true);
    }

    public function authenticate( &$id, &$username, &$realname, &$email, &$errorMessage ) {
        $authManager = AuthManager::singleton();
        $extraLoginFields = $authManager->getAuthenticationSessionData(PluggableAuthLogin::EXTRALOGINFIELDS_SESSION_KEY);
        $api = $this->myradioAPIRequest(
            "v2/auth/testcredentials",
            ["user" => $extraLoginFields["username"], "pass" => $extraLoginFields["password"]],
            "POST"
        );
        if (!isset($api["status"]) || $api["status"] !== "OK" || !isset($api["payload"])) {
            $errorMessage = wfMessage("myradio-error");
            return false;
        }
        if ($api["payload"] === false) {
            $errorMessage = wfMessage("no-user");
            return false;
        }

        $id = 0;
        $dbr = wfGetDB( DB_REPLICA );
        $existing_user_id = $dbr->selectField('user', 'user_id', ['user_name' => $api["payload"]['memberid']]);
        if ($existing_user_id !== false) {
            $id = $existing_user_id;
        }
        $username = $api["payload"]['memberid'];
        $realname = $api["payload"]["fname"] . " " . $api["payload"]["sname"];
        $email = $api["payload"]["public_email"];
        return true;
    }

    public function deauthenticate( User &$user ) {
        // TODO: Something?
    }

    public function saveExtraAttributes( $id ) {
    }
}