# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## 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
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 generates printer deployment packages (`.intunewin` for Microsoft Intune, `.zip` for NinjaRMM) from Windows driver ZIPs and a web UI form. No external services — single FastAPI app + SQLite + Docker volume.

**Request flow:**
1. Driver upload → `api/drivers.py` → `services/inf_parser.py` parses INF → `storage/driver_store.py` stores by SHA256 → Peewee `Driver` record
2. Printer config → `api/printers.py` → `db/models.py` `Printer` record (links Driver FK)
3. Icon upload → `api/icons.py` → Pillow validates PNG 256×256 → SHA256 storage → `Icon` record
4. Package export → `api/packages.py` → `generators/script_generator.py` renders Jinja2 PS1 templates → `generators/intunewin_builder.py` encrypts ZIP (AES-256-CBC + HMAC-SHA256)

**Key modules:**
- `imptune/config.py` — `DATA_DIR`, `DB_PATH`, `DRIVERS_DIR`, `ICONS_DIR` from env
- `imptune/db/database.py` — SQLite WAL mode + `foreign_keys=1`; all models inherit `BaseModel`
- `imptune/services/inf_parser.py` — auto-detects encoding (UTF-16/UTF-8/cp1252), resolves `%TOKEN%` from `[Strings]`, handles multi-model INFs
- `imptune/generators/intunewin_builder.py` — Python-native `.intunewin` (ZIP-in-ZIP); IV is 16 bytes (not 32); matches reference tool `1.8.6.0` output
- `imptune/templates/scripts/` — Jinja2 templates for `install.ps1`, `uninstall.ps1`, `detect.ps1`

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

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

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

## Test Setup

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

## Environment Variables

| Var | Default | Purpose |
|-----|---------|---------|
| `DATA_DIR` | `/data` | Storage root (DB + drivers + icons) |
| `PORT` | `8000` | Server port |