Refector code

api/_bootstrap.php

@@ -0,0 +1,103 @@
+<?php
+/**
+ * api/_bootstrap.php
+ * ------------------
+ * Shared setup for every endpoint under /api: loads config, applies error
+ * settings, and provides small HTTP / JSON helpers.
+ */
+
+require_once __DIR__ . '/../config.php';
+
+if (cfg('runtime.show_errors')) {
+    ini_set('display_errors', '1');
+    ini_set('display_startup_errors', '1');
+    error_reporting(E_ALL);
+} else {
+    error_reporting(0);
+}
+
+/** Send a JSON response and stop. */
+function json_out($data, $status = 200) {
+    http_response_code($status);
+    header('Content-Type: application/json; charset=utf-8');
+    header('Access-Control-Allow-Origin: *');
+    header('Cache-Control: no-cache, must-revalidate, max-age=0');
+    echo json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+    exit;
+}
+
+/** Plain-text response and stop (used by the lyrics endpoint). */
+function text_out($text, $status = 200) {
+    http_response_code($status);
+    header('Content-Type: text/plain; charset=utf-8');
+    header('Access-Control-Allow-Origin: *');
+    header('Cache-Control: no-cache, must-revalidate, max-age=0');
+    echo $text;
+    exit;
+}
+
+/**
+ * Perform an HTTP GET and return the body (or null on failure).
+ * Falls back to file_get_contents when cURL is unavailable.
+ */
+function http_get($url, $timeout = 5, $headers = []) {
+    if ($url === '') return null;
+
+    if (function_exists('curl_init')) {
+        $ch = curl_init($url);
+        curl_setopt_array($ch, [
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_CONNECTTIMEOUT => (int) $timeout,
+            CURLOPT_TIMEOUT        => (int) $timeout,
+            CURLOPT_FOLLOWLOCATION => true,
+            CURLOPT_MAXREDIRS      => 3,
+            CURLOPT_USERAGENT      => 'radio-site/1.0 (+https://github.com)',
+        ]);
+        if (!empty($headers)) {
+            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+        }
+        $body = curl_exec($ch);
+        $code = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
+        curl_close($ch);
+        if ($body === false || $code >= 400) return null;
+        return $body;
+    }
+
+    // Fallback without cURL.
+    $ctx = stream_context_create([
+        'http' => [
+            'timeout' => (int) $timeout,
+            'header'  => implode("\r\n", $headers),
+            'ignore_errors' => true,
+        ],
+        'ssl' => ['verify_peer' => true, 'verify_peer_name' => true],
+    ]);
+    $body = @file_get_contents($url, false, $ctx);
+    return ($body === false) ? null : $body;
+}
+
+/**
+ * Read a value out of a decoded-JSON structure using dot notation.
+ * Supports array indexes: "a.b.0.c".
+ */
+function dot_get($data, $path, $default = null) {
+    if ($path === '' || $path === null) return $default;
+    $node = $data;
+    foreach (explode('.', $path) as $key) {
+        if (is_array($node) && array_key_exists($key, $node)) {
+            $node = $node[$key];
+        } elseif (is_object($node) && isset($node->$key)) {
+            $node = $node->$key;
+        } else {
+            return $default;
+        }
+    }
+    return $node;
+}
+
+/** Read the artist/title the browser sends to artwork/lyrics endpoints. */
+function request_track() {
+    $artist = $_POST['artist'] ?? $_GET['artist'] ?? '';
+    $title  = $_POST['title']  ?? $_GET['title']  ?? '';
+    return [trim((string) $artist), trim((string) $title)];
+}