nwc php fallback

Author: bitrequest

proxy/v1/api.php

@@ -1,6 +1,6 @@
 <?php	
 // PROXY
-const VERSION = "0.033";
+const VERSION = "0.034";
 const CACHE_DURATIONS = [
 	"2m" => 6220800,  // 2 months in seconds
 	"1w" => 604800,   // 1 week in seconds

proxy/v1/ln/api/nwc/nwc.php

@@ -1,42 +1,52 @@
 <?php
 
+// Pure-PHP fallback used when the Node.js relay is offline.
+include_once "nwc_native.php";
+
 // ─── Config ───────────────────────────────────────────────────────────────────
 // Override if your Node.js server runs on a different host/port
-define("NWC_NODE_ENDPOINT", TOR_PROXY . ":8030/nwc");
+define("NWC_NODE_FAST_ENDPOINT", TOR_PROXY . ":8030/nwc");
 define("NWC_TIMEOUT", 35); // seconds
 
 // ─── Core request ─────────────────────────────────────────────────────────────
 function nwc_request(string $nwc_uri, string $method, array $params): array {
     $payload = json_encode([
-        "uri"    => $nwc_uri,
+        "uri" => $nwc_uri,
         "method" => $method,
         "params" => $params
     ]);
-    $ch = curl_init(NWC_NODE_ENDPOINT);
+    $ch = curl_init(NWC_NODE_FAST_ENDPOINT);
     curl_setopt_array($ch, [
-        CURLOPT_POST           => true,
-        CURLOPT_POSTFIELDS     => $payload,
+        CURLOPT_POST => true,
+        CURLOPT_POSTFIELDS => $payload,
         CURLOPT_RETURNTRANSFER => true,
-        CURLOPT_TIMEOUT        => NWC_TIMEOUT,
+        CURLOPT_TIMEOUT => NWC_TIMEOUT,
         CURLOPT_CONNECTTIMEOUT => 5,
-        CURLOPT_HTTPHEADER     => ["Content-Type: application/json"]
+        CURLOPT_HTTPHEADER => ["Content-Type: application/json"]
     ]);
 
-    $response  = curl_exec($ch);
-    $curl_err  = curl_errno($ch);
+    $response = curl_exec($ch);
+    $curl_err = curl_errno($ch);
     $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
     curl_close($ch);
-    if ($curl_err) {
-        throw new Exception("NWC node unreachable — is the Node.js server running? (curl error: $curl_err)");
-    }
-    $result = json_decode($response, true);
-    if (!is_array($result)) {
-        throw new Exception("NWC node returned invalid response");
-    }
-    if (!($result["ok"] ?? false)) {
-        throw new Exception("NWC error: " . ($result["error"] ?? "unknown"));
+
+    // If Node.js returned a well-formed NWC envelope, use its result —
+    // including its semantic errors (wallet-side failures that PHP would
+    // also hit). Anything malformed (404 HTML, 502 from a reverse proxy,
+    // empty body, non-JSON, missing "ok" key) is treated as Node being
+    // unreachable and falls through to the pure-PHP implementation.
+    if (!$curl_err && is_string($response) && $response !== "") {
+        $result = json_decode($response, true);
+        if (is_array($result) && array_key_exists("ok", $result)) {
+            if ($result["ok"]) {
+                return $result["result"] ?? [];
+            }
+            throw new Exception("NWC error: " . ($result["error"] ?? "unknown"));
+        }
     }
-    return $result["result"];
+
+    // Node.js endpoint unreachable or misconfigured — fall back.
+    return nwc_request_native($nwc_uri, $method, $params);
 }
 
 // ─── Public API ───────────────────────────────────────────────────────────────
@@ -47,7 +57,7 @@ function nwc_request(string $nwc_uri, string $method, array $params): array {
  */
 function nwc_create_invoice(string $nwc_uri, int $amount_sats, string $description = "", int $expiry): array {
     return nwc_request($nwc_uri, "make_invoice", [
-        "amount"      => $amount_sats,
+        "amount" => $amount_sats,
         "description" => $description,
         "expiry" => $expiry
     ]);
@@ -77,7 +87,7 @@ function nwc_get_info(string $nwc_uri): array {
 function nwc_list_transactions(string $nwc_uri, int $limit = 50): array {
     $result = nwc_request($nwc_uri, "list_transactions", [
         "limit" => $limit,
-        "type"  => "incoming"
+        "type" => "incoming"
     ]);
     $transactions = array_reverse($result["transactions"] ?? []);
     return ["invoices" => $transactions];