Winter Arc

Invite-only site for the Winter Arc fitness competition: landing page, personal invite links, daily reminder emails, a group arena where everyone's fighter brawls and trash-talks, a live leaderboard with practice streaks, an admin panel for entering results, certificates and shareable posters.

Built with Next.js 14, Supabase (database) and any SMTP mailbox (Gmail works). Hosted on Vercel. All of it fits in free tiers for a group of 7.

Change the season

Everything about the competition lives in lib/season.ts: dates, events, scoring caps, the weekly training plan, drills and awards. Edit it, push, and the site, emails and admin panel follow. Scoring rules are tested in lib/scoring.test.ts (npm test).

Scoring types:

• per_unit: points for every unit up to a cap. Long run is 10 pts per km, capped at 10 km.
• time: full 100 at or under a target time, minus points per step slower, with a floor for finishing.

Every event is worth 100, so nobody's specialty outweighs the rest.

Set it up (about 20 minutes, once)

1. Database (Supabase). Create a free project at supabase.com. Open SQL Editor, paste supabase/schema.sql and run it. It's safe to run again after updates. From Project Settings > API, copy the project URL and the service_role key.
2. Email (Gmail). On the Google account that will send the emails, turn on 2-step verification, then create an App Password (myaccount.google.com/apppasswords). Gmail allows about 500 emails a day, plenty for 7 people.
3. Hosting (Vercel). At vercel.com, Add New > Project, import this GitHub repo, and add the environment variables from .env.example:
   • SITE_URL: only needed outside Vercel; on Vercel, links use the project's production address automatically
   • SUPABASE_URL, SUPABASE_SERVICE_ROLE_KEY
   • ADMIN_PASSWORD: what you'll type to open /admin
   • SESSION_SECRET, CRON_SECRET: any long random strings
   • SMTP_HOST=smtp.gmail.com, SMTP_PORT=465, SMTP_USER, SMTP_PASS (the app password), MAIL_FROM Deploy.
4. Run it. Open /admin, sign in, add each invitee's name and email, then press Email invite (or Copy link to send it yourself on WhatsApp). The daily reminder goes out at 6:00 IST to everyone who accepted (vercel.json, schedule 30 0 * * * in UTC).

The arena's trash talk

When people accept their invite they answer honest questions about themselves (how long they've trained, toughest challenge, what they want to prove, most embarrassing workout moment, longest run, most push-ups) and optional fun ones (tone, fighter name, signature move, excuse, guilty snack, hype song, early bird or night owl, rival). Friends roast each other with those answers plus real stats. Lines live in lib/trash.ts, questions in lib/profile.ts. Anyone can change their answers at /profile.

Bro talk

One quote shows per day, in a strip above the arena and in the daily email. Add or remove quotes in Admin > Bro talk; friends can add their own (up to 10 each) from the arena page. Three built-in starters rotate until the first quote is added.

Pages

Page	Who	What
/	Everyone	Landing page. Personal welcome and confetti for invitees.
/i/<token>	Invitee	Personal invite link. Remembers them and opens the page.
/profile	Accepted invitees	Edit catchphrase and personality answers.
/board	Accepted invitees, admin	The arena (group brawl and shared trash talk), live table, practice log, streak.
/admin	Admin	Participants and invites, result entry per event category, baseline test, broadcast emails, awards.
/certificate/<id>	That athlete, admin	Printable A4 certificate (print or save as PDF).
/api/poster/<id>	Invitees, admin	1080×1350 PNG poster for stories. /api/poster/board is the group poster.

Develop

npm install
cp .env.example .env.local   # fill in values
npm run dev