NIGHTLIFT — crew edition

Self-contained nighttime strength tracker. Multi-user, cloud-synced, with a group/social layer and a large built-in exercise bank for instant swaps.

File

• index.html — the whole app. No build step, no serverless function, no API key.

Users / codes

• Aaron — 7880 · Sean — 1221 · Abe — 7886 Each code is its own user (own progress, stats, profile, swaps). Edit the USERS map at the top of the to change codes/names.

Replace exercise (now offline + free)

Every exercise has a ↻ Replace button. It instantly swaps in a different exercise from a built-in bank of ~90 moves (same muscle group, your equipment only, not a duplicate of what’s already in the day), with cues, sets/reps, a progression note, and a matching animation. “Undo swap” reverts. No API key, no cost, works offline.

The earlier AI version (api/replace.js + an ANTHROPIC_API_KEY env var) is no longer used. You can delete that file from the repo and remove the env var if you added it — nothing depends on them now.

Supabase (project xcgdnzypisbzxhaooswb)

• nightlift_log — per-user daily logs (PK user_id + log_date)
• nightlift_profile — per-user height/weight/name + swap overrides
• nightlift_wall — shared taunt/support messages RLS on, anon read/write. URL + anon key are baked into the CONFIG block.

Resist tab (beat the graze)

A tab to open when you’re tempted to snack. Tap what you’re craving from a grid of ~24 common culprits. Then three behavior-tuned paths:

• ⏱ Ride it out (10 min): an urge-surf countdown ring with rotating distraction prompts (water, walk, breathe, taunt the crew). Cravings fade in ~10 min; you wait with it, then bank the win. Beat it early anytime.
• Skip it now — bank it: instant win for when you don’t need the timer.
• I had it: a no-shame give-in log (“no big deal”) so the data stays honest and one slip doesn’t blow up the habit. Wins build a resist streak (loss-aversion: “don’t break your streak”) alongside skips this week, calories resisted, sugar dodged, and an all-time “≈ lb not gained” (cal ÷ 3500). Slips are counted gently and never punished. The Crew board shows each person’s calories resisted this week (wins only). Framing stays swap-and-water, not skip-real-meals; numbers are labeled estimates.

Plateau detector (opt-in rotation)

The program stays fixed on purpose — progressive overload on the same lifts is what builds muscle and lets the app track progress. But when a lift’s total reps go flat or decline across its last 3 logged sessions, that exercise shows a gold ⚠ PLATEAU badge and auto-opens with a prompt: Rotate it (pulls a fresh variation from the bank) or Keep pushing it (snoozes the prompt 14 days). It only fires after 3+ logged sessions of that lift and never swaps anything automatically — variety exactly when the data says you’ve stalled, not before. Dismissals are stored per device.

Day rollover at 4 AM + multiple sessions per day

• The app’s “day” rolls over at 4 AM local, so a workout logged at 1 AM counts for the night before, not the next morning.
• The Tonight tab has a session bar: tap ＋ Session to log a second (or third) workout the same day, switch between them, or remove one. Each session has its own focus (A/B/C/D), sets, and Log button. Streak, the Progress stats/heatmap/volume chart, and the Crew weekly standings all count every session.

Custom equipment + auto-scaled reps (Crew → Your profile)

Each user lists the kettlebells and dumbbells they own (e.g. 10, 25). Every exercise then shows the right load from their gear and scales the reps: heavier weight → fewer reps, lighter → more (compounds use your heaviest, isolation moves like raises/curls use your lightest). Timed and to-failure work isn’t scaled. If someone lacks an implement, it falls back gracefully (KB move → DBs, etc.).

Gear coach

A card on the Crew tab recommends what to buy next based on what you own and your logged reps — if you’re routinely pushing past ~18 reps a set, it nudges you to add the next size up (with concrete kettlebell/dumbbell suggestions).

Crew tab

• Weekly standings for all three; 👑 leader, 🪣 last place = “Tub-o-Shit” (by sessions, ties broken on total reps, resets Sundays).
• Wall: send a 🔥 taunt or 💪 support to one person or everyone.
• Profile: edit height/weight. “Switch user” to sign in as someone else.

Deploy

Upload index.html to the repo → Vercel auto-redeploys. That’s the only file needed now.

Security note

4-digit codes + public anon key = a casual gate, not real auth. Fine for a crew’s workout logs.

Food tracker (protein & carbs)

A new Food tab tracks daily protein and carbs against goals.

• Common foods — catalog of staples across Protein/shakes, Meat, Fruit, Veg, Carbs, and Dairy. Tapping one opens a quick editor pre-filled with that food’s protein/carbs/calories so you can adjust the numbers before logging (brands differ — e.g. one yogurt’s protein vs another) and pick a servings multiplier (×1–20, with a live total). You can also rename it to your brand.
• Manual — type protein, carbs, and (optional) calories for anything not in the list.
• Scan label — snap the Nutrition Facts panel; on-device OCR (Tesseract.js, lazy-loaded from CDN, fully client-side, no API key) reads protein/carbs/calories. Always shown for you to confirm/correct before saving; if OCR can’t read it, you just type the numbers.
• Goals — three daily bars: protein (≈0.9 g/lb, a target to hit), carbs (a target to hit), and a calorie cap (a ceiling to stay under, default ≈12.5×bodyweight). The calorie bar shows headroom left while you’re under and flips to a warning when you go over. All three editable via “Edit goals”; stored per device.
• Daily totals reset on the 4am logical-day boundary like everything else; entries sync to Supabase (nightlift_food) and cache locally. Tap ✕ on any entry to remove it.

New table nightlift_food (RLS on, anon policy) was migrated automatically.

Day navigation + move a workout (fixes wrong-day logging)

The 4am rule only helps if you log during the midnight–4am window. If you train at 1am but log it later in the day, it lands on the new day with no way to fix it — and there was previously no way to view or log into a past day. Now the Tonight tab has a day bar at the top:

• ◀ / ▶ step to previous/next day (next stops at today — no future logging). Opening a past day lets you log a missed session directly into it.
• Move this workout — one tap sends the active session to the previous day (“Did this last night?”) or, when viewing a past day, forward a day. Reps, sets, and done-state move with it; the view follows so you see it land. Both days re-sync to Supabase.
• Today jumps back to the current day. Tapping the Tonight tab always returns to today.

Timezone of the 4am cutoff

The logical day (and the 4am rollover) is now pinned to Mountain time (America/Denver), not the device’s timezone — so the day a workout counts toward is identical whether you open the app at home or while traveling. This anchors today(), both workout/crew streaks, and the resist-day mapping. America/Denver follows daylight saving (MST in winter, MDT in summer), so the cutoff is always 4am by the Mountain wall clock. If you actually want fixed MST year-round (Arizona, no DST), change the single constant APP_TZ to America/Phoenix.

Recent foods (one-tap re-log)

The Food tab now opens on a 🕘 Recent category: every distinct item you’ve logged in the last 7 days, each showing the exact protein/carbs/calories you saved and an ×N count of how many times you’ve had it. Tapping re-logs it instantly with those numbers — no editor, no re-typing. Items you adjusted (edited macros or a servings multiplier) are kept as their own distinct recent entry, so your dialed-in versions are one tap away. Empty until you’ve logged something. Also added Beef stick (P9·C1·100) to Snacks.