kadence/README.md

# Kadence

**Find the rhythm of your work day.** A pomodoro timer that knows what you have
to do, stands between you and the distractions, and tells you in Telegram how
the day went.

Four pieces, one backend:

| Piece | What it is | Where it runs |
| --- | --- | --- |
| **Backend** | FastAPI + Postgres: the clock, the task mirror, the blocking policy, the reports, the Telegram bot | Docker |
| **Web app** | React + Material UI — the whole thing in a browser, on any device | Docker (same container) |
| **Desktop app** | A **native Qt/QML** app: tray, D-Bus, real notifications, and the part that actually blocks websites and apps | Your machine |
| **Android app** | A native Compose client for the Nothing Phone (3): the interval as an Android 16 Live Update, and the countdown on the rear Glyph Matrix | Your phone |

The server owns the clock. Start a pomodoro on your phone's browser, watch it
count down in the tray, finish it from the desktop — it is one interval.

---

## What it does

### A fully configurable pomodoro timer
Focus / short break / long break lengths, how many cycles before a long break,
auto-start of breaks and of the next interval, a daily goal, pausing (or not),
strict mode (abandoning a focus interval costs you a written reason),
interruption counting, alarm sound and volume. Intervals are recorded as they
really happened — planned vs actual, paused time, interruptions — so the stats
are not a guess.

### Every todo you own, in one list
Sourced from the integrations worked out in [`~/code/jira-helper`](../jira-helper),
and taking **all** of them:

* **Jira** — every open issue across the site (not just what is due today), with
  the due date, the "Start date" custom field, the status, the priority, the
  project.
* **Todoist** — every open task, or your own filter query.
* **Google Tasks** — every incomplete task, including undated ones.
* **Laundry bookings** (`4ka.inbicst.ru`) — the slots you booked today, because
  they are blocks of time that will interrupt your pomodoros.
* **Local tasks** — the "and this too" you type at 9am.

**You cannot tick a task off here.** Completion belongs to the tool the task
lives in — close it in Jira, Todoist or Google Tasks and the next refresh
notices (an item that comes back done, or that a healthy source stops returning
at all, is credited to that day). Two places to mark something done is two
places to be wrong.

Every source is pulled independently: an expired laundry cookie or a Jira outage
costs you that one source and shows up as a warning next to it, never as an
empty list — and nothing is ever counted as closed on a source that failed. The
list is mirrored into the database on every refresh, so the UI is instant and
the daily report still works when a source is down.

### A focus guard that actually blocks
Rules live on the server (edit them in the web app or the desktop app); the
native desktop app enforces them on your machine:

* **Websites** — `/etc/hosts` is rewritten through a tiny privileged helper under
  polkit, and the masks a hosts file cannot express are answered by a local DNS
  stub the helper points `systemd-resolved` at, for the zones it can route. No
  browser extension, no proxy, works for every app on the machine, and you can
  audit the hosts region with `cat /etc/hosts`.
* **Masks** — `youtube.com` blocks the site plus `www.` and `m.`; `*.google.com`
  blocks the bare domain plus every subdomain in your expansion list — add a bare
  `*` to that list and "every" means every, answered by the DNS stub rather than by
  guessed hostnames. A hosts file has no wildcards at all, so `*gram*` is reported
  honestly as unenforceable on the machine rather than silently ignored.
  Exceptions read exactly like blocks: a plain one covers its subdomains
  (`youtube.com` allowed spares `music.youtube.com`, the same way blocking it
  catches them), and a masked one is a mask — so `*.google.com` blocked plus
  `*.docs.google.com` allowed does what you would expect, and `docs.*` allowed
  is how you spare something narrower than a whole subtree.
* **Applications** — `/proc` is watched and blocked apps are closed (or just
  reported, if you prefer a warning). Entries here are globs as well: `steam*`,
  `*discord*`, matched against the process name and its command line.
* **When** — only while a focus interval runs (the default), always, or on a
  schedule. Breaks can keep the block on or let it go.
* Every attempt that gets turned away is recorded — and teased about in the
  evening report.

### A daily report that is worth reading
Pomodoros vs goal, focus and break minutes, the longest unbroken stretch, when
you started and stopped, interruptions, abandoned intervals, tasks closed (with
links), the sites you tried to sneak off to, your streak, a comparison against
your 7-day average, **achievements** (🎯 goal met, 🧘 deep work, 🦉 night owl,
🪃 comeback, 🚀 personal best…) and **fun facts**:

```
🍅 Daily report — 2026-10-18

████████░░ 6/8 pomodoros
⏱ Focus: 2h 35m · breaks: 35m
🧠 longest stretch: 1h 20m · 🕘 from 09:12 to 18:40 · 📵 interruptions: 3
🔥 Streak: 4 days (best 11)
📊 7-day average: 5.4 · yesterday: 7

✅ Tasks closed (3)
• PLAT-184 Fix the flaky importer (Jira)
• Write the design doc (Todoist)
…

🚫 Temptations blocked
• youtube.com × 12
• reddit.com × 4

🏅 Achievements
🧘 Deep work — 80 minutes without breaking the chain.
🛡️ Gatekeeper — The blocker turned you away 16 times. It won.

🍅 155 minutes of focus — that is 7.0 sitcom episodes you did not watch.
⏰ Your peak hour was 10:00. Defend it.

Target hit. Now protect the streak. 💪
```

Four tones (friendly / coach / drill sergeant / dry) and two languages (English,
Russian).

### A Telegram bot that pushes back
Unlike jira-helper's one-way daily message, this one is a remote control:

* **Morning briefing** — your day, grouped: overdue, due today, coming up, plus
  your streak and the goal to beat.
* **Daily report** at your hour, **weekly review** on your day.
* **Nudges** — "90 minutes without a pomodoro. You are at 2/8 — one block puts you
  back on plan." Windowed, rate-limited, and silent during quiet hours.
* **Cheers** every N pomodoros.
* **Commands**: `/start_work [minutes]`, `/break`, `/pause`, `/resume`, `/stop`,
  `/status`, `/today`, `/done 3`, `/report`, `/week`, `/streak`, `/block`.

---

## Quick start

```bash
git clone <this repo> kadence && cd kadence
cp .env.example .env          # fill in Jira / Todoist / Telegram (optional)
docker compose up -d --build  # → http://localhost:8000
```

That is the backend and the web app. Then the native desktop app:

```bash
# Arch: the only dependency is PyQt6, which is a system package
sudo pacman -S --needed python-pyqt6 qt6-declarative
# (Debian/Ubuntu: sudo apt install python3-pyqt6 python3-pyqt6.qtquick qml6-module-qtquick-controls)

./desktop/packaging/install-desktop.sh   # menu entry + icon + `kadence-desktop`
sudo ./desktop/helper/install.sh         # the privileged helper, for website blocking
kadence-desktop
```

Point it at the backend in **Settings → Backend** (it defaults to
`http://localhost:8000`).

### Without Docker

```bash
make backend-venv        # backend/.venv with the dependencies
cd backend && .venv/bin/python -m app.cli serve --reload
cd frontend && npm install && npm run dev      # http://localhost:5173
```

---

## Configuration

Two layers, on purpose:

* **Environment** (`.env`) — infrastructure and **secrets**: the database, the
  API token, and the seeds for the integrations. The variable names are
  jira-helper's, so you can copy that `.env` across unchanged.
* **Settings** (the UI) — everything else, stored as one validated document in
  the database and shared by the web app, the desktop app and the bot. Secrets
  are masked (`••••••••`) on the way out and never clobbered on the way back.

Nothing has to be in the environment: a fresh install is a working 25/5/15 timer,
and you can fill everything in from **Settings**.

| Variable | What for |
| --- | --- |
| `DATABASE_URL` | set by compose; SQLite works too (`sqlite:///./kadence.db`) |
| `API_TOKEN` | if set, every `/api` call must send `X-API-Token`. Set it the moment the backend leaves localhost |
| `TIMEZONE` | which day a pomodoro belongs to, and when the jobs fire |
| `JIRA_*`, `TODOIST_*`, `GOOGLE_*`, `LAUNDRY_*` | seeds for the sources |
| `TELEGRAM_BOT_TOKEN`, `TELEGRAM_CHAT_ID` | the bot |
| `SCHEDULER_ENABLED`, `TELEGRAM_BOT_ENABLED` | switch the background jobs / bot off |
| `AUTH_USERNAME`, `AUTH_PASSWORD` | closes the **browser UI** behind a login; see [Going public](#going-public) |
| `TELEGRAM_OWNER_ID`, `TELEGRAM_BOT_USERNAME` | lets that same browser login happen via the Telegram Login Widget |

---

## How it fits together

```
┌──────────────┐        ┌───────────────────────────────┐        ┌───────────────┐
│  Web app     │        │  Backend (FastAPI)            │        │  Jira         │
│  React + MUI │──/api──│  • timer engine (owns clock)  │───────▶│  Todoist      │
└──────────────┘        │  • task mirror + write-back   │        │  Google Tasks │
                        │  • blocking policy            │        │  Laundry      │
┌──────────────┐        │  • reports + achievements     │        └───────────────┘
│ Desktop app  │──/api──│  • scheduler (briefing,       │
│ Qt/QML, D-Bus│        │     report, nudges)           │───────▶  Telegram ⇄ you
│ hosts+DNS+   │        └───────────────────────────────┘
│ /proc        │                      │
└──────────────┘                      │
      enforces                    Postgres
```

* `backend/` — FastAPI app. `app/services/` holds the thinking (timer, tasks,
  stats, report, blocker policy, scheduler, bot); `app/sources/` holds one module
  per integration; `app/api/` is a thin HTTP layer. 71 tests under `backend/tests`.
* `frontend/` — React + TypeScript + MUI, built by Vite into the backend image and
  served from the same origin (so there is no CORS to configure).
* **The look** — warm paper, ink type, hairline rules instead of boxes and
  shadows, Fraunces for figures and headings, Inter for everything else, one
  ember accent. The desktop app's `Theme` singleton carries the same tokens as
  the web app's `tokens.ts`, so the two clients are one product. Chart colours
  come from a separate, validated data palette: the brand is warm, but a chart
  has to stay readable for colour-blind readers in both themes.
* `desktop/` — the native app. See [`desktop/README.md`](desktop/README.md).
* `android/` — the phone client. Everything with interesting behaviour lives in a
  plain-JVM `:core` module, so 234 tests run on a laptop with nothing but a JDK. See
  [`android/README.md`](android/README.md).

---

## Make targets

```
make up               # docker compose up --build
make dev              # backend with reload + Vite dev server
make test             # backend test suite
make desktop          # run the native app from the checkout
make desktop-test     # desktop app test suite (uses the backend venv)
make desktop-install  # menu entry + icon
make helper-install   # the privileged blocking helper
make report           # build and send today's report right now
make android-install  # build and install the phone client
make deploy           # push master and redeploy kadence.timka.su
```

The backend also has a CLI, handy from cron or a systemd timer:

```bash
python -m app.cli refresh       # pull every source once
python -m app.cli briefing      # send the morning briefing
python -m app.cli report        # build and send today's report
python -m app.cli stats         # print the numbers as JSON
python -m app.cli set-password  # set/rotate the web login password (prompts, never argv)
```

---

## Going public

Kadence is still single-user: `AUTH_USERNAME`/`AUTH_PASSWORD` and
`TELEGRAM_OWNER_ID` all name *you*, not a user table. What they do is close the
**browser UI** to everyone else once the backend is reachable beyond your own
machine — `API_TOKEN` already protected the raw API; this is the same idea with
a login screen instead of a header the desktop app fills in for you.

1. **Password.** Set `AUTH_PASSWORD` (and optionally `AUTH_USERNAME`, default
   `timka`) in `.env` and restart — the hash is seeded into the database on
   first boot, the plaintext is never stored. A browser now has to sign in at
   `/`; the desktop app is unaffected, it keeps sending `X-API-Token`. Rotate
   the password later from **Settings → Access** (while signed in) or by
   running `make set-password` on the server — the UI never accepts a new
   password over an unauthenticated connection.
2. **Telegram login, in addition** (optional). You already have the bot token
   (`TELEGRAM_BOT_TOKEN`) for notifications; login reuses it:
   * DM [@userinfobot](https://t.me/userinfobot) for your numeric Telegram id
     → `TELEGRAM_OWNER_ID`.
   * Tell [@BotFather](https://t.me/BotFather) `/setdomain` and give it this
     site's **HTTPS** domain — the Login Widget refuses to render anywhere else.
   * Set `TELEGRAM_BOT_USERNAME` (no `@`) in `.env`, or fill it in under
     **Settings → Access** once the UI is reachable.
   * Restart. The login screen grows a "Log in with Telegram" button under the
     password form.
3. Either credential alone is enough to close the UI; set both and either one
   signs you in. With neither set, the browser stays as open as the bare API
   always was — nothing changes until you opt in.

---

## Security notes

* The desktop app never runs as root. The only privileged code is
  `desktop/helper/kadence-helper` (~250 lines) and it has exactly two jobs: it
  validates every hostname, rewrites only the region between its own markers in
  `/etc/hosts`, writes atomically, keeps a backup, and refuses anything that does
  not look like a hostname — and it writes one drop-in for `systemd-resolved`
  pointing the routable zones at the unprivileged DNS stub, which it removes again
  before the stub stops. It is authorised by polkit (`auth_admin_keep` by default
  — one prompt per session; `install.sh --passwordless` drops that for one user).
* Tokens live in the database and in `.env`, are masked in every API response,
  and are never sent to the browser in full. The password is never stored at
  all — only a salted PBKDF2 hash.
* Set `API_TOKEN` before exposing the backend beyond localhost (protects the
  raw API — desktop app, scripts, cron); see [Going public](#going-public) to
  close the **browser UI** the same way, with a login instead of a header.
* The login cookie is `HttpOnly`, `SameSite=Lax`, and `Secure` whenever the
  request arrives as HTTPS (directly or via `X-Forwarded-Proto` from a reverse
  proxy) — put the backend behind TLS before relying on it over the open
  internet, same as `API_TOKEN` always needed.
* Login attempts are rate-limited per source IP (in-process; fine for one
  instance, one user).