▶ Play now: https://inseconds.cc
Daily music blind test. Listen as briefly as you can, guess artist + title. Less time = more points. Same challenge for everyone, every day.
- Each day at midnight UTC, a new set of tracks is automatically selected (only tracks with an active Deezer preview, outside a reuse cooldown that follows the pool size: a configurable share of the playable pool stays blocked); if the midnight job fails, the challenge is regenerated automatically when the first player arrives (deterministic selection: same challenge for everyone)
- Preview availability is re-checked nightly against Deezer (rate-limit aware, batched calls), along with the genres of each track's album (one call per album); admins can also re-run it on demand from the scheduled-jobs dashboard (
/jobs) - Playback starts automatically at the shortest step (0.5s); extend step by step (1, 1.5, 2, 3, 5, 10s) with "listen more" before attempting artist + title
- Free, unlimited "listen more" extensions per track (up to the last duration tier) - scoring is always based on the final tier listened, no penalty for extending
- The player shows the clip's real waveform (computed once per clip on the server and kept as about 2 KB of numbers, never any audio) and the points at stake, which drop as you extend or take a hint; the play button pulses with the bass
- A "Skip (0 pts)" button (with confirmation) moves on to the next track without answering
- Optional hints (release year, then a masked artist name) unlockable at 5s/10s of listening - costs points, server-authoritative
- Scoring is entirely server-side - no client-side manipulation possible
- On each reveal, see a histogram of how long other players needed to guess that track
- Guest mode: play without signing up (no leaderboard, only global stats)
- Optional linked accounts (open signup, passwordless magic-link login) - keeps history/streak across devices; guest play stays fully open regardless
- Daily streak shown under the Start button (details panel on tap), with streak freezes for linked accounts (1 free on signup, +1 every 7 days, 2 max, used automatically on a missed day)
- After playing, a single "today's result" screen: your score with your game as five small bars, the countdown, one line under the score (your standout moment when there is one, otherwise the share of players you beat, from 5 players), an equalizer of today's scores (lowest, median, highest), your tracks folded away
- Share your score in Wordle-style emoji format (✅ artist and title, 🔶 one of them,
🅾️ none) through the phone's share menu (clipboard on a computer) - Available in French and English - auto-detected from the browser, switchable anytime from the footer (choice saved in localStorage)
- Legal notice at
/legal(also/mentions-legales) and privacy policy at/privacy(also/confidentialite) - Installable on the home screen (PWA), updated automatically at a safe moment (never in the middle of a round)
- List of the devices signed in to your account, sign out one device or all the others
- Your data (GDPR): download a JSON copy of all your data and permanently delete your account ("Your data" section of the profile); devices unseen for 91 days and accounts inactive for 3 years are deleted automatically every night; what you type as an answer is never stored
- Run mode (shown as "Platines", invitation-only for now): a second game of 4 rounds of 5 tracks, getting harder, each with a fixed 10 s listen and 45 s per track to answer, on a single screen where played tracks pile up, a points gauge to unlock the next round, and a record disc (scratched to gold); send the same playlist to friends with a link and compare scores once you have played it (
/runs; rules and screens indocs/runs/)
- Docker (dev PostgreSQL database, and integration tests)
- .NET 10 SDK
- Node.js 24 (24.15 or later, required by Angular CLI 22.2) and npm
cp .env.example .env # first time only, then fill in DB_PASSWORD
docker compose up -d database
cd src/back
ConnectionStrings__DefaultConnection="Host=localhost;Port=5432;Database=inseconds;Username=inseconds;Password=<DB_PASSWORD>" \
dotnet run --project InSeconds.Api.TestingInSeconds.Api.Testing is the API with a fake Deezer, a fake email sender and the /api/e2e/* routes (never in the production image); InSeconds.Api is the real API. Migrations are applied at startup.
cd src/front/InSeconds.Client
npm ci # first time only
npm startOpen http://localhost:5176.
| URL | Purpose |
|---|---|
http://localhost:5176 |
Frontend (Angular dev server, proxies /api to the API) |
http://localhost:5175/health |
API liveness - also returns the build date (build) |
http://localhost:5175/health/ready |
API readiness (database reachable) |
http://localhost:5175/jobs |
Hangfire dashboard for scheduled jobs (admin account) |
| Layer | Tech |
|---|---|
| Backend | .NET 10, modular monolith (Players, Catalogue, Gameplay, Daily), Wolverine (HTTP endpoints, transactions, outbox), FluentValidation, EF Core 10, Hangfire |
| Database | PostgreSQL 17, one schema per module (Docker in dev, shared Postgres container on the VPS in production) |
| Frontend | Angular 22 (standalone, zoneless, signals), NgRx SignalStore, Tailwind CSS v4, HTML audio element, PWA |
| Music | Deezer API (search, 30s previews, covers) |
| Tests | xUnit v3 + Testcontainers, NetArchTest, Vitest (browser mode), Sheriff, Playwright |
| Observability | OpenTelemetry (OTLP logs, traces, metrics) → Grafana Cloud; frontend errors relayed through the API; error code shown to the player |
| Deployment | OVH VPS (Debian), Docker Compose behind Caddy and Cloudflare, GitHub Actions CI/CD |
InSeconds/
├── deploy/ # VPS: shared Postgres and backups, Caddy, deploy scripts, Grafana dashboards
├── docs/ # Documentation (FR): entry point, game rules, tasks, architecture, operations, compliance, Run mode, history
├── src/
│ ├── back/ # InSeconds.slnx: Api (modules), Infrastructure, Deezer, Api.Testing, tests/
│ └── front/InSeconds.Client/ # Angular app (account, gameplay, daily, admin domains)
├── docker-compose.yml # Dev: database
├── docker-compose.staging.yml # Staging
├── docker-compose.prod.yml # Production
└── README.md / README.fr.md
GitHub Actions workflow on every push (all branches) and every PR to main:
- back - build, unit, architecture and integration tests (Testcontainers), migrations up to date, Wolverine codegen up to date, Docker image without the test host
- front - production build, Vitest tests, Sheriff boundaries, NSwag clients up to date
- e2e - Playwright against the test host
- nginx-headers - builds the frontend nginx image and checks cache and security headers, MIME types and the old-address redirect
The "CI OK" check aggregates them (it is the one branch protection requires). Stale runs are cancelled automatically. Details: docs/exploitation/ci.md.
Delivery: pull requests target env/staging, which is deployed to the staging site once "CI OK" passes; after testing there, env/staging is merged into main (merge commit), which deploys production the same way. Details: docs/exploitation/deploiement.md.
cd src/back
dotnet test --solution InSeconds.slnx # unit + architecture + integration (Docker required)Four projects in tests/: unit (domain rules, no database), architecture (module boundaries, NetArchTest), integration (Testcontainers: a real PostgreSQL with a fresh database per test class, the API in memory) and the SQL scripts run by hand on the VPS (deploy/vps).
cd src/front/InSeconds.Client
npx ng test --watch=false # Vitest in a real Chromium
npm run lint:arch # domain boundaries (Sheriff)cd src/front/InSeconds.Client
E2E_DB_CONNECTION="Host=localhost;Port=5432;Database=inseconds_e2e;Username=inseconds;Password=<DB_PASSWORD>" npm run e2eplaywright.config.ts starts the test host (port 5177) and ng serve (port 5178). 140 tests across 33 files: game, login, profile, devices, your data, streak and freezes, Run mode, admin…
The detailed docs are in French.
docs/README.md- entry point: pitch, stack, where to find whatCLAUDE.md- conventions, data model, known pitfalls (read before contributing)- Architecture:
src/back/CLAUDE.md(backend),src/front/CLAUDE.md(frontend),docs/architecture/(decisions, module boundaries) docs/regles-du-jeu.md- game rules (scoring, extensions, anti-cheat, streak) - what is actually enforced vs merely configureddocs/exploitation/- VPS deployment, staging, backups, CI, emergency accessdocs/conformite/- Deezer API terms, GDPRdocs/runs/- the Run mode (delivered behind an invitation: the game, friend links and comparison)docs/taches.md- what is left to dodocs/historique/- the 2026 rewrite
PolyForm Noncommercial 1.0.0 - free to use, modify and distribute for any noncommercial purpose (personal, educational, hobby, research). Commercial use requires a separate agreement with the author.