# Frontend Reference

## Stack

- **Vue 3** (Composition API, `<script setup>`)
- **Vite 5** (build + dev server)
- **Axios** (HTTP client)
- **lucide-vue-next** (generic UI icons)
- **simple-icons** (brand logos as inline SVG)

No Pinia, no Vue Router (single page, tab switching via reactive state in `App.vue`).

---

## Module Inventory

### `src/main.js`
Minimal entry point: creates the Vue app and mounts it to `#app`.

---

### `src/auth.js`

Reactive authentication state. All consuming components import from here — there is no Vuex/Pinia store.

```javascript
// Exports
isAuthenticated  // computed ref<boolean> — true if token is present
currentUsername  // computed ref<string | null>

setAuth(token, username)   // stores in reactive refs + localStorage
clearAuth()                // clears refs + localStorage
getToken()                 // returns raw token string (used by api.js interceptor)
```

State is initialised from `localStorage` at module load, so auth survives page refreshes.

---

### `src/api.js`

Thin axios wrapper. All requests go to `/api` (relative URL, proxied by Nginx).

**Request interceptor**: injects `Authorization: Bearer <token>` if `getToken()` is non-null.

**Response interceptor**: on 401, calls `clearAuth()` and reloads the page — but only if a token was present (avoids an infinite reload loop if the login endpoint itself returns 401).

```javascript
// Named exports
authApi     // login, updateAccount, me
vlansApi    // list, create, update, remove
devicesApi  // list, create, update, remove
linksApi    // list, create, remove
discoveryApi // scan, ping
```

`authApi.login` sends `application/x-www-form-urlencoded` (required by FastAPI's `OAuth2PasswordRequestForm`). All other calls use JSON.

---

### `src/i18n.js`

Simple key-based i18n, no external library.

```javascript
// Exports
locale      // ref<'fr'|'en'|'es'> — persisted in localStorage, default 'fr'
setLocale(lang)
t(key)      // returns translation, fallback to 'fr', then raw key
tFmt(key, ...args)  // t() with {0}, {1}, ... interpolation
```

Translations are plain objects keyed by locale code. To add a key: add it to all three locale objects. To add a language: add a new locale object and add the code to the switcher pills in `App.vue`.

**Rule**: every visible string in a template must use `t('key')`. Never hardcode text.

---

### `src/theme.js`

```javascript
// Exports
theme        // ref<'light'|'dark'> — persisted in localStorage, default 'light'
toggleTheme()
```

Applies/removes the `html.dark` class on `document.documentElement`. All dark-mode styling is driven by CSS custom properties defined in `App.vue`'s global `<style>`.

---

### `src/brandIcons.js`

```javascript
// Exports
BRANDS            // array of { id, name, keywords[], hex, path }
detectBrands(name, description)  // returns BRANDS entries matching the device
```

`detectBrands` is a pure function — it takes name and description strings and returns all matching brand objects. It is called in both `DeviceIcon.vue` and `DeviceManager.vue`.

To add a brand:
1. Check the `simple-icons` export name: `node -e "const si = require('./node_modules/simple-icons'); console.log(Object.keys(si).filter(k => k.toLowerCase().includes('yourterm')))"`
2. Import `si<Name>` from `simple-icons`
3. Add an entry to `BRANDS`: `{ id: 'yourbrand', name: 'YourBrand', keywords: ['keyword1', 'keyword2'], hex: si<Name>.hex, path: si<Name>.path }`

---

## Component Inventory

### `App.vue`

Global layout and state. Single-file, no sub-layouts.

**Auth guard**: `v-if="!isAuthenticated"` renders `<LoginPage>`, `v-else` renders the main layout. The template is wrapped in `<div class="app-root">` (`display: flex; flex-direction: column; min-height: 100vh`) — single root node to prevent a Firefox autofill overlay bug on Vue fragment comment nodes. Do **not** use `display: contents` here: Firefox fails to update click hit-testing after a child replacement inside a `display: contents` element, causing buttons to be unclickable after login.

**Global state** (reactive refs at the top of `<script setup>`):
- `vlans` — array loaded from `GET /api/vlans/`
- `devices` — array loaded from `GET /api/devices/`
- `activeTab` — `'topology' | 'devices' | 'vlans'`

**Auth functions**: `onLogin({ token, username })`, `onAccountUpdated({ token, username })`, `logout()` — all call `setAuth`/`clearAuth` from `auth.js`.

**CSS variables** are defined here in the global (non-scoped) `<style>` block:
- `:root` — light theme
- `html.dark` — dark theme overrides

---

### `LoginPage.vue`

Full-screen centered login card. No router navigation — it is shown/hidden by `App.vue`'s auth guard.

**Props**: none  
**Emits**: `login` with payload `{ token: string, username: string }`

Calls `authApi.login(username, password)`. On success, emits the token. On failure, shows a localised error message.

---

### `AccountModal.vue`

Modal for changing username and/or password.

**Props**: none (reads `currentUsername` directly from `auth.js`)  
**Emits**: `close`, `updated` with payload `{ token: string, username: string }`

Fields: new username (optional), new password (optional), confirm password (shown only when new password is typed), current password (always required).

Calls `authApi.updateAccount({ current_password, new_username?, new_password? })`. On success, emits the new token so `App.vue` can refresh auth state.

---

### `TopologyGraph.vue`

Topology view. CSS cards only — no SVG, no Cytoscape.

**Props**: `vlans[]`, `devices[]`  
**Emits**: none (read-only view)

**Layout**:
```
toolbar (Ping button + up/down counter)
├── WAN card (is_livebox devices)
├── Gateway card (is_gateway devices)
├── [one card per network, sorted: LANs first then VLANs ascending]
└── Unassigned card (no interface, not livebox, not gateway)
```

Inside each card, devices are sorted by IP address ascending. Devices with no IP go last. A device appears in every card that matches one of its interfaces.

Each device is rendered as a **chip** — a compact tile with:
- Left: type icon (Lucide, always, `typeOnly` prop)
- Center: name + IP pill + interface name + brand SVG logos (11px)
- Right tags column: Link (green, `<a>`) | GW | LXC | VM | ping dot

**Ping**: `POST /api/discovery/ping` with all known IPs. Populates `pingResults` reactive map `{ ip → alive }`. A device is "up" if any of its IPs maps to `alive: true`.

**Dark mode CSS**: scoped styles use `:global(html.dark .special-wan)` etc. The full selector must be inside `:global()` — Vue's scoped CSS transformer does not resolve descendant selectors after the closing parenthesis.

---

### `DeviceIcon.vue`

**Props**: `device` (object with `name`, `description`, `type`), `typeOnly` (boolean, default false)

- `typeOnly: false` — shows brand SVG logo(s) if `detectBrands()` finds a match, else falls back to the Lucide type icon. Used in topology chips.
- `typeOnly: true` — always shows the Lucide type icon. Used in DeviceManager cards.

Lucide icon is selected by a `type → component` map covering all 18 device types.

---

### `DeviceManager.vue`

CRUD view for devices. Presented as a card list.

**Props**: `vlans[]`, `devices[]`  
**Emits**: `refresh` (triggers parent reload of both vlans and devices)

**Filter bar** (28px height):
- Free-text search (name, description, IP) — cleared by Escape
- Type multi-select (only types present in data)
- Network dropdown (color swatch + name)
- Brand dropdown (SVG icon + name, alphabetical)
- Virt dropdown (only shown if at least one device has a `virt_type`)

Filters combine with AND across categories, OR within. Active filter shows `X / total` counter and a "Clear" button.

`deviceTypes` is a `computed` (not a constant) so labels re-render on locale change.

**Form**: inline panel (not a modal). Supports add and edit. Interfaces are managed as a sub-list within the same form.

---

### `VlanManager.vue`

CRUD view for networks (VLANs and plain LANs).

**Props**: `vlans[]`  
**Emits**: `refresh`

`vlan_id` is optional. If omitted, the network is a plain LAN (badge "LAN"). If provided, it is a VLAN (badge "VLAN X"). Color picker included. CIDR is a free-text field with no validation.

---

### `DiscoveryModal.vue`

Auto-discovery modal: ping sweep + DNS PTR lookup.

**Props**: `vlans[]`  
**Emits**: `close`, `import(hosts[])` — parent handles inserting discovered hosts

Lets the user select VLANs to scan and configure the DNS server. Shows progress and results. Discovered hosts can be selectively imported.

---

## CSS Conventions

All background, text, and border colors use CSS custom properties from `App.vue`:

```
--bg-page, --bg-card, --bg-card-hover, --bg-input
--bg-thead, --bg-chip, --bg-chip-hover
--border, --border-strong
--text-primary, --text-secondary, --text-muted, --text-faint
--chip-ip-bg, --chip-ip-color
--modal-overlay, --shadow-card, --shadow-modal, --shadow-drop
```

**Exceptions** (hardcoded hex is acceptable):
- Device type icon colors in chips (semantic, theme-independent)
- VLAN badge background colors
- Auth feedback colors (`#EF4444` red, `#15803D` green) with dark overrides via `:global(html.dark .class)`

**Dark-mode scoped override syntax**:
```css
/* CORRECT */
:global(html.dark .my-component .child) { color: red; }

/* WRONG — Vue does not resolve descendants after :global() closing paren */
:global(html.dark) .my-component .child { color: red; }
```