From 3ad1d22f46794b853a59df989b1329860d42e051 Mon Sep 17 00:00:00 2001
From: Bastard Operator <bofh@nogafam.es>
Date: Thu, 25 Nov 2021 15:53:32 +0100
Subject: [PATCH] Add API to get Mastodon new Authorization OAUTH URL

---
 public/api/signup/mastodon/get_client.php | 54 +++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 public/api/signup/mastodon/get_client.php

diff --git a/public/api/signup/mastodon/get_client.php b/public/api/signup/mastodon/get_client.php
new file mode 100644
index 0000000..1b5610b
--- /dev/null
+++ b/public/api/signup/mastodon/get_client.php
@@ -0,0 +1,54 @@
+<?php require '/src/base.php' ?>
+<?php
+
+$instance = resolve_instance($_GET['instance'] ?? '');
+if ($instance === false) {
+	http_response_code(400);
+	die(json_encode([
+		'status' => 'error',
+		'message' => lr('error.instance_not_exists',
+			'Instance does not exist or is incorrect.')
+	]));
+}
+
+$app_name      = conf('app_name', 'RealFan');
+$site_name     = conf('site_name', 'http://127.0.0.1:8080');
+$redirect_uris = conf('site_name', 'http://127.0.0.1:8080');
+$scopes        = 'read write';
+
+# create the Authorization App
+$ch = curl_init($instance.'/api/v1/apps');
+curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
+	'client_name'	=> $app_name,
+	'redirect_uris'	=> $redirect_uris,
+	'website'		=> $site_name,
+	'scopes' 		=> $scopes,
+]));
+curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+$result = curl_exec($ch);
+curl_close($ch);
+
+
+# result must be JSON
+$result = @json_decode($result);
+if ($result === null) {
+	http_response_code(500);
+	die(json_encode([
+		'status' => 'error',
+		'message' => lr('error.instance_failed_or_not_mastodon',
+			'Instance failed to create an authorization App. Is it an instance?')
+	]));
+}
+
+# create the URL for OAUTH
+$query_string = http_build_query([
+	'client_id'		=> $result->client_id ?? null,
+	'redirect_uris'	=> $redirect_uris,
+	'response_type'	=> 'code',
+	'scope'			=> $scopes
+]);
+echo json_encode([
+	'status' => 'ok',
+	'message' => $instance.'/oauth/autorize?'.$query_string
+]);