From 9756aa45afa2a9afa2dbb7eac6ca675796faf67a Mon Sep 17 00:00:00 2001
From: Mawoka <mawoka@e.email>
Date: Thu, 23 Jun 2022 21:27:03 +0200
Subject: [PATCH] :chart_with_upwards_trend: Added analytics on time spent
 running PoW-stuff

---
 classquiz/routers/editor.py         |  2 +-
 frontend/src/lib/editor/card.svelte |  1 -
 frontend/src/lib/hashcash.ts        | 13 +++++++++++++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/classquiz/routers/editor.py b/classquiz/routers/editor.py
index 48b6f1b..6dd460e 100644
--- a/classquiz/routers/editor.py
+++ b/classquiz/routers/editor.py
@@ -104,7 +104,7 @@ async def upload_image(edit_id: str, pow_data: str, file: UploadFile = File()):
         raise HTTPException(status_code=400, detail="Image-type now allowed!")
     session_data = EditSessionData.parse_raw(session_data)
     file_name = f"{session_data.quiz_id}--{uuid.uuid4()}"
-    # await storage.upload(file_name=file_name, file_data=file_bytes) TODO: UNCOMMENT!!!!
+    await storage.upload(file_name=file_name, file_data=file_bytes)
     await redis.lpush(f"edit_session:{edit_id}:images", file_name)
     random_str = os.urandom(8).hex()
     await redis.set(f"edit_session:{edit_id}:pow", random_str, ex=3800)
diff --git a/frontend/src/lib/editor/card.svelte b/frontend/src/lib/editor/card.svelte
index d6a43fd..6630e22 100644
--- a/frontend/src/lib/editor/card.svelte
+++ b/frontend/src/lib/editor/card.svelte
@@ -18,7 +18,6 @@
 	let uppyOpen = false;
 
 	const computePOW = async (salt: string) => {
-		console.log('Called!');
 		if (pow_salt === undefined) {
 			return;
 		}
diff --git a/frontend/src/lib/hashcash.ts b/frontend/src/lib/hashcash.ts
index 5734695..487a47b 100644
--- a/frontend/src/lib/hashcash.ts
+++ b/frontend/src/lib/hashcash.ts
@@ -1,4 +1,5 @@
 import { DateTime } from 'luxon';
+import * as Sentry from '@sentry/browser';
 
 const gen_salt = (l: number): string => {
 	const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
@@ -31,6 +32,7 @@ export const mint = async (
 	const challenge = `${ver}:${bits}:${ts}:${resource}:${ext}:${salt}`;
 	let counter = 0;
 	let result: string;
+	const t0 = performance.now();
 	// eslint-disable-next-line no-constant-condition
 	while (true) {
 		const data = new TextEncoder().encode(`${challenge}:${counter.toString(16)}`);
@@ -43,5 +45,16 @@ export const mint = async (
 		}
 		counter += 1;
 	}
+	const t1 = performance.now();
+	const transaction = Sentry.startTransaction({ name: 'calculatedHasCash' });
+	const span = transaction.startChild({
+		op: 'hashcash',
+		data: {
+			milliseconds_taken: t0 - t1,
+			bits: bits
+		}
+	});
+	span.finish();
+	transaction.finish();
 	return `${challenge}:${result}`;
 };