refactor: FeedExpander (#3740)

* refactor: FeedExpander

index.php

@@ -6,6 +6,56 @@ if (version_compare(\PHP_VERSION, '7.4.0') === -1) {
 
 require_once __DIR__ . '/lib/bootstrap.php';
 
+Configuration::verifyInstallation();
+$customConfig = [];
+if (file_exists(__DIR__ . '/config.ini.php')) {
+    $customConfig = parse_ini_file(__DIR__ . '/config.ini.php', true, INI_SCANNER_TYPED);
+}
+Configuration::loadConfiguration($customConfig, getenv());
+
+// Consider: ini_set('error_reporting', E_ALL & ~E_DEPRECATED);
+date_default_timezone_set(Configuration::getConfig('system', 'timezone'));
+
 $rssBridge = new RssBridge();
 
+set_exception_handler(function (\Throwable $e) {
+    http_response_code(500);
+    print render(__DIR__ . '/templates/exception.html.php', ['e' => $e]);
+    RssBridge::getLogger()->error('Uncaught Exception', ['e' => $e]);
+    exit(1);
+});
+
+set_error_handler(function ($code, $message, $file, $line) {
+    if ((error_reporting() & $code) === 0) {
+        return false;
+    }
+    // In the future, uncomment this:
+    //throw new \ErrorException($message, 0, $code, $file, $line);
+    $text = sprintf(
+        '%s at %s line %s',
+        sanitize_root($message),
+        sanitize_root($file),
+        $line
+    );
+    RssBridge::getLogger()->warning($text);
+});
+
+// There might be some fatal errors which are not caught by set_error_handler() or \Throwable.
+register_shutdown_function(function () {
+    $error = error_get_last();
+    if ($error) {
+        $message = sprintf(
+            '(shutdown) %s: %s in %s line %s',
+            $error['type'],
+            sanitize_root($error['message']),
+            sanitize_root($error['file']),
+            $error['line']
+        );
+        RssBridge::getLogger()->error($message);
+        if (Debug::isEnabled()) {
+            print sprintf("<pre>%s</pre>\n", e($message));
+        }
+    }
+});
+
 $rssBridge->main($argv ?? []);