# mtga-assistant

A native Linux deck and game tracker for **Magic: The Gathering Arena** running under Steam/Proton.
It follows MTGA's `Player.log`, much like Untapped.gg and other trackers do, and shows:

Two views, switched from the top bar (Ctrl+1 / Ctrl+2):

- **Match**, from top to bottom (drag the dividers to resize; sizes are remembered):
  - *You · Match · Opponent*: life totals, poison/energy and other player counters, commanders,
    emblems, hand/library/graveyard counts, turn timer and timeouts, land drops used/allowed, who
    was on the play, plus the match panel (turn, phase, game number, Bo3 score and draw count,
    game time).
  - *Selected turn · Turn · Whole game*: what happened in a turn for you, your opponent and in
    total (cards drawn, spells cast, lands played, creatures died, life gained/lost, damage,
    discards, mills, exiles, counters, tokens, land drops). The middle panel picks the turn
    (◀ ▶, or *Live* to follow the current one).
  - *My deck · Opponent · Preview*: remaining library with draw odds, your zones; the opponent's
    board, graveyard, exile, cards known to be in their hand or library, and every card seen this
    match; hover a card for its [Scryfall](https://scryfall.com) image.
- **History**: stats (win rate overall, last 10/100 games, last 7 days, on the play/draw, average
  length and turns) and a sortable list of every finished game: date, event, deck, commanders,
  opponent, both decks' colours, who was on the play, result, turns and length. Click a header to
  sort, right-click a cell to show only (or hide) games with that value; the stats follow the
  filters. Click a game to open it in the Match view ("Back to live" returns). Games from the
  previous MTGA session (`Player-prev.log`) are imported on startup.

*⚙ Customize* shows or hides the match panels, turn stats, deck sections and the preview.
*Customize → Arrange…* reorders (drag, or ↑/↓) and shows/hides the My deck and Opponent sections
and the turn stats. Your choices are remembered.

Card names, mana costs and types come from MTGA's own local card database, so they work offline.

## Requirements

- MTGA installed through Steam (Proton). The log, install and card DB are auto-detected from your
  Steam library folders.
- **Detailed logs enabled** in MTGA: *Options → Account → Detailed Logs (Plugin Support)*.
- [uv](https://docs.astral.sh/uv/) (`pacman -S uv`).

## Running

```sh
uv run mtga-assistant                       # follow the live Player.log
uv run mtga-assistant --replay path/to/Player-prev.log --rate 40   # replay a saved log
uv run pytest                               # tests
```

Start it before or after MTGA: on startup it reads the existing log to catch up on a match in
progress, then follows new lines. When MTGA restarts and replaces the log, the tracker resets.

On Wayland the window's app id is `mtga-assistant`. For example, to keep it floating on another
workspace in Hyprland:

```
windowrule = float, class:^(mtga-assistant)$
windowrule = workspace 2, class:^(mtga-assistant)$
```

## Configuration

Optional: `~/.config/mtga-assistant/config.toml`

```toml
log_path = "/path/to/Player.log"   # override auto-detection
mtga_dir = "/path/to/steamapps/common/MTGA"
cache_max_mb = 500                 # image cache cap
history_max_mb = 300               # cap for stored game details (summaries are always kept)
```

Game history lives in `~/.local/share/mtga-assistant/history.db` (roughly 20–100 KB per game).

## Image cache

Images are downloaded only for cards that actually appear, at Scryfall's `normal` size (about
60–100 KB each), and stored in `~/.cache/mtga-assistant/images`. When the cache passes
`cache_max_mb`, the least recently viewed images are deleted. *Cache → Clear image cache* empties it.

## Known limitations

- MTGA leaves oversized game-state messages out of the log ("Message summarized because one or
  more GameStateMessages exceeded the 50 GameObject or 50 Annotation limit"), typically during board
  wipes. Some zones can then be stale until they next change. The app detects this and shows a
  warning.
- After a library shuffle, a known card's position in the opponent's library is lost. It stays listed
  under "Library … known" until it shows up again. If it is drawn without being revealed, it may
  stay listed.