# CLAUDE.md

Guide for Claude Code (claude.ai/code) work in repo.

## Commands

**Run tests:**
```bash
pytest tests/
pytest tests/unit/test_inf_parser.py  # single test file
pytest tests/ -k "test_name"          # single test by name
```

**Run dev server:**
```bash
export DATA_DIR=/tmp/imptune_data
export COOKIE_SECURE=false  # plain HTTP — omit if serving behind TLS
uvicorn imptune.main:app --reload --port 8000
```

**Docker:**
```bash
docker-compose up
docker build -t imptune .
```

**Install deps:**
```bash
pip install -r requirements.txt -r requirements-dev.txt
```

## Architecture

ImpTune make printer deploy packages (`.intunewin` for Intune, `.zip` for NinjaRMM) from Windows driver ZIPs + web UI. No external services — single FastAPI + SQLite + Docker volume.

**Request flow:**
1. Driver upload → `api/drivers.py` → `services/inf_parser.py` parse INF → `storage/driver_store.py` store by SHA256 → Peewee `Driver` record (shared/global — visible to every Owner)
2. Printer config → `api/printers.py` → `db/models.py` `Printer` record (links Driver FK, scoped to `request.state.owner`)
3. Icon upload → `api/icons.py` → Pillow validate PNG 256×256 → SHA256 storage → `Icon` record
4. Package export → `api/packages.py` → `generators/script_generator.py` render Jinja2 PS1 templates → `generators/intunewin_builder.py` encrypt ZIP (AES-256-CBC + HMAC-SHA256)

**Key modules:**
- `imptune/config.py` — `DATA_DIR`, `DB_PATH`, `DRIVERS_DIR`, `ICONS_DIR`, `COOKIE_SECURE` from env
- `imptune/db/database.py` — SQLite WAL mode + `foreign_keys=1`; all models inherit `BaseModel`; `init_db()` also backfills `owner_id` on pre-per-owner-scoping DBs into a synthetic legacy `Owner` (key written to `{DATA_DIR}/legacy_owner_key.txt`)
- `imptune/services/session.py` — `OwnerSessionMiddleware` resolves `request.state.owner` from the `imptune_owner_key` cookie, creating one on first visit (skips `/health`)
- `imptune/services/inf_parser.py` — auto-detect encoding (UTF-16/UTF-8/cp1252), resolve `%TOKEN%` from `[Strings]`, handle multi-model INFs
- `imptune/generators/intunewin_builder.py` — Python-native `.intunewin` (ZIP-in-ZIP); IV 16 bytes (not 32); match reference tool `1.8.6.0` output
- `imptune/templates/scripts/` — Jinja2 templates for `install.ps1`, `uninstall.ps1`, `detect.ps1`

**Per-owner storage:** `Printer`/`Client` (groups) are scoped to an `Owner` identified by an opaque bearer key in a cookie — no accounts. `Driver` stays global/shared. Every route taking a `printer_id`/`client_id` must filter/check `.owner == request.state.owner` (404, not 403, on mismatch) — printer IDs are small sequential ints, so a list-only filter isn't enough. Onboarding modal (`templates/base.html`, gated on `request.state.is_new_owner`) offers "download backup key" (`GET /session/key/download`, marks `Owner.is_permanent`) vs. temporary; `/session/restore` re-attaches a browser to a previously downloaded key. In tests, use the `owner` fixture (`tests/conftest.py`) when creating `Printer`/`Client` rows directly via the ORM so the `client` fixture's cookie-scoped requests can see them.

**UI stack:** Pico CSS + HTMX 2 + Alpine.js 3 + Jinja2 server-side templates.

**HTMX pattern:** Forms `hx-post`, swap `#driver-list` / `#printer-list` / `#client-list` targets. Errors return inline HTML fragments (HTTP 400/409) via `_error_response()`. Success return partials from `templates/partials/`.

**PowerShell install script notes:**
- WOW64 64-bit relaunch guard (Intune run 32-bit, `pnputil` need 64-bit)
- UAC self-elevation for user context (SYSTEM context skip)
- Two-step: `pnputil /add-driver` then `Add-PrinterDriver` + `Add-PrinterPort` + `Add-Printer`
- All idempotent (`-ErrorAction SilentlyContinue`)

## Test Setup

`conftest.py` monkeypatch `config.DATA_DIR` + `config.DB_PATH` to temp dir per test. `client` fixture yield `TestClient(app)` with isolated SQLite. E2E in `tests/e2e/` use Playwright.

## Environment Variables

| Var | Default | Purpose |
|-----|---------|---------|
| `DATA_DIR` | `/data` | Storage root (DB + drivers + icons) |
| `PORT` | `8000` | Server port |
| `COOKIE_SECURE` | `true` | Owner-session cookie `Secure` flag. Set `false` for local plain-HTTP dev (`uvicorn --reload`) or the browser drops the cookie and a new Owner is created on every request. |