bug: HOT_STREAK badge is withheld/dropped due to incomplete data tracking for the current day

[Yashaswini-K-P]

Description

The backend function checkHotStreak evaluates the HOT_STREAK badge using an active snapshot array slice (history.slice(-8)) that includes today's incomplete dataset. Because it requires strict daily increment comparison against the previous day (todayTotals - yesterdayTotals < 1), it forces a user's streak to drop or remain invisible for the majority of the day until they solve an additional problem on that specific calendar day.

The Problem

If a user solves a problem every single day for 7 days straight, their streak is technically valid. However, when the backend calculation runs at any point during "today":

1. todayTotals will equal yesterdayTotals because the user hasn't completed/logged a new problem yet on this current calendar day (e.g., they plan to solve it at 9:00 PM).
2. The condition if (todayTotals - yesterdayTotals < 1) evaluates to true.
3. The loop triggers consecutiveDaysMet = false and breaks, stripping away or withholding their earned badge.

This leaves users with a tiny window of time to actually "feel" or see their badge. For example, if a user finishes their daily problem at 11:00 PM, they will only have the badge visible on their profile for exactly 1 hour before midnight resets the snapshot and breaks the conditional math again.

Proposed Solution

Modify the backend tracking logic to look at the last 7 fully completed days (ignoring today's live/incomplete snapshot), or adjust the math parameters to allow a grace window for the current calendar day's total so users aren't penalized for not completing a problem first thing in the morning.

would like to work on this !!!

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[jagdish-15]

Yes, that's an important edge case in the streak calculation.

A streak should remain valid throughout the current day, even if the user hasn't solved a question yet, since there's still time left in the day for them to do so. The streak should only become invalid if the user failed to solve any question yesterday, not simply because today's progress hasn't started yet.

I'll assign this to you.