feat: add request logging functionality and usage metrics display

open-sse/utils/stream.js

@@ -1,6 +1,6 @@
 import { translateResponse, initState } from "../translator/index.js";
 import { FORMATS } from "../translator/formats.js";
-import { saveRequestUsage, trackPendingRequest } from "@/lib/usageDb.js";
+import { saveRequestUsage, trackPendingRequest, appendRequestLog } from "@/lib/usageDb.js";
 
 // Get HH:MM:SS timestamp
 function getTimeString() {
@@ -66,6 +66,9 @@ function logUsage(provider, usage, model = null, connectionId = null) {
 
   console.log(`${COLORS.green}${msg}${COLORS.reset}`);
 
+  // Log to log.txt
+  appendRequestLog({ model, provider, connectionId, tokens: usage, status: "200 OK" }).catch(() => {});
+
   // Save to DB
   saveRequestUsage({
     provider: provider || "unknown",