# BincioActivity — Context for Claude

## What this project is

BincioActivity is a federated, open-source, self-hosted activity stats platform
(think personal Strava). Two-stage pipeline:

1. **`bincio extract`** (Python): GPX/FIT/TCX → BAS JSON data store
2. **`bincio render`** (Astro/Node): BAS data store → static website

The BAS (BincioActivity Schema) JSON files are the federation protocol.
Anyone can publish their data as BAS JSON and others can include it.

## Key design decisions

- **Unified data layout** — single-user and multi-user share the same structure: activities always live in `{data-root}/{handle}/`. The only difference is the presence of `instance.db` (auth). No mode switching, no migration.
- **No database, no server** — everything is static files; multi-user VPS mode adds SQLite auth only
- **Python with uv** for the extract stage
- **Astro + Svelte + Tailwind + MapLibre GL + Observable Plot** for the site
- **Haversine** (not geopy) for distance calculations (10x faster)
- **Worker initializer pattern** for ProcessPoolExecutor — large shared data
  (strava_lookup dict, known_hashes frozenset) is sent once per worker via
  `initializer=`, not once per task
- **BAS activity IDs** always use UTC with Z suffix for URL safety
- **TCX files** from Garmin use both `http://` and `https://` namespace URIs —
  parser handles both
- **Shard manifest for multi-user** — no activity data duplication; root `index.json`
  lists user shard URLs; browser resolves all shards concurrently; same mechanism
  handles yearly pagination and remote federation
- **Iterative RDP** implemented inline in `simplify.py` — no `rdp` PyPI package
  (not available as a pure-Python wheel for Pyodide)

## Your data

- Source: `~/your-activity-data/`
  - `activities/` — Strava export (GPX, FIT, TCX, all with .gz variants)
  - Any subdirectories with FIT files from Garmin/Karoo devices
  - `activities.csv` — Strava metadata (names, descriptions, gear)
- Extracted output: `~/bincio_data/` (or `/tmp/bincio_test/` for testing)

Configure input paths in `extract_config.yaml`.

## Project structure

```
bincio/                    Python package
  extract/
    models.py              DataPoint, ParsedActivity, LapData
    parsers/               GPX, FIT, TCX parsers + factory
    sport.py               sport name normalisation
    metrics.py             haversine-based stats computation (single pass)
    timeseries.py          downsample to 1Hz, build BAS timeseries object
    simplify.py            RDP track simplification → GeoJSON (iterative, no rdp dep)
    dedup.py               exact (hash) + near-duplicate detection
    strava_csv.py          Strava activities.csv importer
    writer.py              BAS JSON + GeoJSON writer
    config.py              extract_config.yaml loader
    cli.py                 `bincio extract` CLI
  render/
    cli.py                 `bincio render` CLI (symlinks data, runs astro build/dev)
    merge.py               sidecar edit overlay (produces _merged/)
  edit/
    cli.py                 `bincio edit` CLI (single-user local only)
    server.py              FastAPI write API for the edit drawer
  serve/
    cli.py                 `bincio serve` CLI (multi-user VPS)
    server.py              FastAPI: auth, user mgmt, write API (auth-gated)
    db.py                  SQLite data layer (users, sessions, invites)
    init_cmd.py            `bincio init` CLI: bootstrap instance.db + admin user
schema/
  bas-v1.schema.json       JSON Schema for BAS
SCHEMA.md                  Human-readable BAS spec
site/                      Astro project
  src/
    layouts/Base.astro     Reads instancePrivate from index.json; injects auth wall
    pages/
      index.astro           Activity feed (loads index.json client-side)
      activity/[id].astro   Single activity (SSG, loads detail JSON client-side)
      activity/local/       IDB-only activities (converted locally via Pyodide)
      stats/index.astro     Heatmap + year totals
      u/[handle].astro      Per-user profile pages (multi-user)
      login/index.astro     Login form (public page)
      register/index.astro  Registration with invite code (public page)
      invites/index.astro   Invite management
      convert/index.astro   Local file conversion via Pyodide (browser-only)
    components/
      ActivityFeed.svelte   Card grid, sport filter, pagination
      ActivityDetail.svelte Map + stats + charts + photo gallery
      ActivityMap.svelte    MapLibre GL (gradient track, linked hover dot)
      ActivityCharts.svelte Observable Plot (elevation/speed/HR/cadence tabs)
      StatsView.svelte      Yearly heatmap + totals
      EditDrawer.svelte     Slide-in edit panel (visible when PUBLIC_EDIT_URL set)
      LocalActivityDetail.svelte  Detail view for IDB-only (locally converted) activities
    lib/
      types.ts              BAS TypeScript types
      format.ts             formatDistance, formatDuration, sportIcon, etc.
      localstore.ts         IndexedDB store for locally converted activities
      dataloader.ts         Fetches index.json, resolves shards recursively
```

## How to run

```bash
# Single-user (no login)
cd ~/src/bincio_activity
uv run bincio extract --output /tmp/bincio_test  # → /tmp/bincio_test/{handle}/
uv run bincio dev --data-dir /tmp/bincio_test
# → http://localhost:4321/u/{handle}/

# Multi-user (with login)
uv run bincio init --data-dir /tmp/bincio_test --handle dave
uv run bincio extract --output /tmp/bincio_test  # → /tmp/bincio_test/dave/
uv run bincio dev --data-dir /tmp/bincio_test
# → http://localhost:4321  (login required)

# bincio dev does everything: merges sidecars, writes manifest,
# symlinks public/data, starts bincio serve (if instance.db exists),
# starts astro dev. Ctrl+C stops all.

# Tests
uv run pytest
```

## MapLibre GL + Vite/Astro — known gotchas

Learnt the hard way during debugging (March 2026):

- **`maplibregl.workerUrl = ...` is the v3 API and silently no-ops in v4+.**
  The v5 API is `maplibregl.setWorkerUrl(url)`, but you don't need it at all in a
  normal Vite environment — MapLibre handles the blob worker automatically.

- **`optimizeDeps: { exclude: ['maplibre-gl'] }` breaks tile loading.**
  It prevents Vite from converting MapLibre's UMD bundle to ESM. The UMD bundle
  uses AMD `define()` internally; served raw, the tile worker blob fails silently →
  black map, no tiles. The correct setting is `include: ['maplibre-gl']`.

- **`build.target: 'es2022'` (and `optimizeDeps.esbuildOptions.target`) is required.**
  MapLibre's dependencies use ES2022 class field syntax. If esbuild downgrades it,
  helpers like `__publicField` aren't available inside the serialised worker blob
  scope → tile loading fails. This is a known upstream issue (maplibre-gl-js #6680).

- **Use static imports, not dynamic `await import('maplibre-gl')`, when possible.**
  With `client:only="svelte"` in Astro, SSR never runs for the component so there is
  no `window is not defined` risk. Static import lets Vite pre-bundle correctly.

- **Use `client:only="svelte"` (not `client:load`) for the activity detail page.**
  `client:load` does SSR + hydration; complex interactive components with MapLibre
  can hit hydration mismatch issues. `client:only` mounts fresh on the client only.

- **MapLibre v5 requires explicit `center` and `zoom` in the Map constructor.**
  v4 silently defaulted to `center: [0,0], zoom: 0`. v5 leaves internal projection
  state undefined → `Cannot read properties of undefined (reading 'lng')` crashes
  on any operation that touches coordinates (markers, resize, render). Always pass
  `center` and `zoom` even if you plan to `fitBounds` later.

- **MapLibre v5 requires `setLngLat()` on markers before `.addTo(map)`.**
  v4 tolerated markers without coordinates. v5 calls `Marker._update()` inside
  `addTo()`, which needs valid lngLat → same `'lng'` crash. Set a dummy `[0, 0]`
  if the real position arrives later (e.g. hover markers).

## Observable Plot — known gotchas

- **Curve names are hyphenated, not camelCase.**
  Use `"monotone-x"`, not `"monotoneX"`. Plot uses its own curve name registry
  (not raw d3 identifiers). Wrong names throw `unknown curve` at runtime.

The working `astro.config.mjs` Vite section:
```js
vite: {
  optimizeDeps: {
    include: ['maplibre-gl'],
    esbuildOptions: { target: 'es2022' },
  },
  build: { target: 'es2022' },
},
```

## Activity sidecar edits — design spec

Users edit activities via **sidecar markdown files** in the data dir.
No database, no server — consistent with the project's static-files-only philosophy.

### File naming

```
~/bincio_data/
  activities/{id}.json    ← immutable extract output
  edits/{id}.md           ← user edits (sidecar)
  edits/images/{id}/      ← uploaded photos
  _merged/                ← render-time merge output (gitignored-style)
```

### Sidecar format

```markdown
---
title: "Epic climb up Monte Grappa"
sport: cycling
hide_stats: [cadence]
highlight: true
private: false
gear: "Trek Domane"
---

Rode with friends. Legs felt great after the rest week...
```

The sidecar `private: true` flag maps to `privacy: "unlisted"` in the merged JSON.
**`unlisted`** means: not shown in the public feed, but the activity detail, GPS track,
and timeseries are all accessible by direct URL (security by obscurity, same model
as the detail JSON itself). Use `no_gps` if the GPS track must not be published.

### Editing UX: drawer in Astro + `bincio edit` write API

- `bincio edit --data-dir ~/bincio_data` starts a FastAPI server on port 4041
- Set `PUBLIC_EDIT_URL=http://localhost:4041` in `site/.env` to enable the edit button
- Clicking Edit on any activity detail page opens a slide-in drawer
- Saving writes the sidecar and triggers `merge_all()` automatically
- `bincio render` always runs `merge_all()` before build/serve and symlinks `public/data` → `_merged/`

### `PUBLIC_EDIT_URL` as feature flag

- **Unset** → no Edit button, normal static site
- **Set** → edit drawer enabled; lives in `site/.env` (gitignored)

## Multi-user VPS architecture

`bincio serve` is a FastAPI app that owns auth and write ops. nginx proxies `/api/*` to it; static files are served by nginx directly. The Vite dev server replicates this proxy for local testing.

Key facts:
- Session cookie: `bincio_session`, httpOnly, SameSite=Lax, 30-day max-age
- Rate limiting: 10 login attempts / 15 min / IP (in-memory, resets on restart)
- Invite limits: admins unlimited, regular users 3 each (`_MAX_USER_INVITES` in `db.py`)
- Instance privacy: `instance.private=true` in root `index.json` → `Base.astro` injects a
  `fetch('/api/me')` auth wall; `/login/` and `/register/` have `public={true}` to skip it
- Incremental rebuild: `POST /api/activity/{id}` triggers `bincio render --handle {user}`
  as a fire-and-forget subprocess (only if `--site-dir` was passed to `bincio serve`)
- Write API in `bincio serve` delegates to `bincio.edit.server._apply_sidecar_edit`; the
  Strava sync delegates to `bincio.edit.server.strava_sync` with a temporary data_dir swap

## Instance settings (stored in `instance.db` `settings` table)

| Key | Default | Set by | Description |
|-----|---------|--------|-------------|
| `max_users` | — (unlimited) | `bincio init --max-users N` or `bincio serve --max-users N` | Cap on registered users; 0 or absent = unlimited |
| `store_originals` | `true` | `bincio init` (first run only) | Whether uploaded source files and raw Strava API data are kept in `{user_dir}/originals/` |

`get_setting` / `set_setting` in `db.py` are the read/write accessors. Any new instance-wide flag should use this table rather than a new column.

## Original file storage

When a user uploads a FIT/GPX/TCX file the server may keep the source in `{user_dir}/originals/{filename}` rather than always deleting it after extraction. The per-upload `store_original` form field controls the behaviour for a single upload (sent by the UI checkbox). The instance-level `store_originals` setting provides the default that pre-populates the checkbox (read from `GET /api/me` → `store_originals_default`).

For Strava sync, `store_originals=true` causes `POST /api/strava/sync` to save `{"meta":…,"streams":…}` JSON per activity to `{user_dir}/originals/strava/{activity_id}.json`.

## Feedback storage

User feedback submitted via `/feedback/` is stored as flat files under the instance data root (NOT inside a user's own data dir):

```
{data_root}/
  _feedback/
    {handle}.json          ← append-only list of submissions for that user
    {handle}/
      {timestamp}_{token}_{filename}   ← attached images
```

Each entry in `{handle}.json`:
```json
{ "id": "1712345678_ab12cd34", "handle": "brut", "submitted_at": "...", "text": "...", "images": ["..."] }
```

To read feedback on the VPS:
```bash
cat /var/bincio/data/_feedback/brut.json | python3 -m json.tool
ls  /var/bincio/data/_feedback/brut/   # attached images
```

There is no admin UI for feedback — it is intentionally read via SSH/shell only.

## About pages

Static public pages at `/about/` (EN), `/about/it/` (IT), `/about/es/` (ES), `/about/ca/` (CA). All use `public={true}` to bypass the auth wall. Each page:
- Shows a Ko-fi donation button at the top.
- Fetches `GET /api/stats` on load and renders a **community/invitation tree** (member count, each user's display name, membership duration, and who invited them). Hidden silently in single-user mode.
- Contains project description, data storage explanation, early-software caveat, and liability disclaimer.

## Known issues / next steps

- `bincio render --watch` mode not yet implemented as a standalone command, but `bincio dev` now watches the data directory via `watchfiles` (bundled with uvicorn) and re-runs `merge_all` automatically when sidecars or activity files change
- Activity IDs in older test data may use `+0000` format (pre-fix); re-run extract to get `Z` format
- Some activities appear with both untitled and titled IDs (near-dedup timing race)
- Remote federation (remote shard URLs in root manifest) is parsed but not yet displayed with attribution in the UI
- The `site/.env` file is gitignored — copy from `site/.env.example`

## What "good" looks like (not yet done)

- [ ] Friends/federation pages in site (remote shard attribution)
- [ ] Personal records page
- [ ] Activity search / full-text filter in feed
- [ ] GitHub Actions template for auto-publish
- [ ] Karoo/Garmin Connect importers beyond Strava
- [ ] `bincio render --watch` incremental rebuild on sidecar/data changes
- [ ] Highlight badge in activity feed cards
- [x] Per-instance user limit (`max_users` setting, enforced at registration)
- [x] Original file storage option (per-upload checkbox + `store_originals` instance setting)
- [x] About page — multilingual (EN/IT/ES/CA), Ko-fi button, community invitation tree
- [x] `GET /api/stats` — public endpoint with member count and invitation tree
- [x] `bincio.render.merge` — sidecar parser, `_merged/` output, private filter, highlight sort
- [x] `bincio edit` FastAPI write API (GET/POST activity, image upload/delete, triggers merge)
- [x] `EditDrawer.svelte` — slide-in edit UI in the Astro site
- [x] `PUBLIC_EDIT_URL` feature flag
- [x] Markdown rendering in activity description with image path rewriting
- [x] Photo gallery with lightbox on activity detail page
- [x] `bincio serve` — multi-user VPS server (auth, invites, write API)
- [x] `bincio init` — instance bootstrap (SQLite, admin user, root manifest)
- [x] Login, register, invites pages
- [x] Per-user profile pages (`/u/{handle}/`)
- [x] Instance privacy (auth wall, private-by-default)
- [x] Shard-based combined feed (no duplication, concurrent resolution)
- [x] Local file conversion via Pyodide (`/convert/` page, IDB storage)