Merge pull request #83 from walters-labs/migrate-towards-REST-style-API

create `api/v1/index.php` router

Author: jacksonwalters

api/v1/index.php

@@ -0,0 +1,34 @@
+<?php
+header('Content-Type: application/json');
+
+$method = $_SERVER['REQUEST_METHOD'];
+$path   = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
+
+// Strip /api/v1 prefix
+$path = preg_replace('#^/api/v1#', '', $path);
+
+// Only allow POST for certain endpoints, GET for health
+if ($method === 'POST') {
+    switch ($path) {
+        case '/keys':
+            include __DIR__ . '/../keygen.php';
+            break;
+
+        case '/encrypt':
+            include __DIR__ . '/../encrypt.php';
+            break;
+
+        case '/decrypt':
+            include __DIR__ . '/../decrypt.php';
+            break;
+
+        default:
+            http_response_code(404);
+            echo json_encode(['error' => 'Not Found']);
+    }
+} elseif ($method === 'GET' && $path === '/health') {
+    echo json_encode(['status' => 'ok']);
+} else {
+    http_response_code(405);
+    echo json_encode(['error' => 'Method Not Allowed']);
+}