Oliver
180 lines
9.2 KiB
Markdown
180 lines
9.2 KiB
Markdown
# Health Routine – Package Scanner
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> ALWAYS UPDATE THIS FILE AFTER MAKING CHANGES
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## What this is
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A single-page web app (`index.html`) used internally by Health Routine staff to scan **package** barcodes.
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A user selects their name, scans/types a code, and the result is looked up via a webhook and appended to a table.
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Runs in any browser — designed for phones, tablets, and desktop.
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## Files
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```
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index.html — the entire app (HTML + CSS + JS, no build step)
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logo.png — Health Routine brand logo (used in the header)
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agent.md — this file
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start — bash script that launches live-server on localhost:8080
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```
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## Design
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Colors are pulled directly from healthroutine.de's CSS variables:
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| Token | Hex | Usage |
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|------------------|-----------|-------------------------------------|
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| `--primary` | `#005f5a` | Controls bar, table header, buttons |
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| `--primary-dark` | `#004845` | Hover states |
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| `--primary-light`| `#e0f0ef` | Row hover, badge backgrounds |
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| `--bg` | `#f7f7fa` | Page background |
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| `--card` | `#eaeaf2` | Alternating table rows |
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| `--sage` | `#82917d` | (brand footer green, available) |
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| `--error` | `#c71b1b` | Error states |
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| `--success` | `#15803d` | Success toasts |
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Font: system font stack (`-apple-system`, `Segoe UI`, etc.)
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## Webhook
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**Base URL:** `https://brandize.app.n8n.cloud/webhook/e0268b0f-4935-49ba-bfdf-1c0ee01d3b9d`
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### GET — load users
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Called once on page load to populate the user dropdown.
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```
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GET <base_url>
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Authorization: Basic <base64>
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```
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Response — n8n may return a JSON array, a single object, or NDJSON.
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All three formats are handled by `parseJson()` (see below).
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```json
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[
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{ "Name": "Oliver", "id": 1, "createdAt": "...", "updatedAt": "..." },
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{ "Name": "Luka", "id": 2, ... },
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{ "Name": "Benni", "id": 3, ... }
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]
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```
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### POST — submit scan
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Called when the user presses Enter in the scan input.
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```
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POST <base_url>
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Authorization: Basic <base64>
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Content-Type: application/json
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{ "user": "Oliver", "code": "SCANNED_BARCODE_STRING" }
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```
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Success response:
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```json
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{
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"name": "Christa Gierdahl, Christa Gierdahl",
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"producttag": "0-HR-Nail-Care-5",
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"batch": "BATCH/25-11-14/06173",
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"country": "DE"
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}
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```
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Error response (non-2xx **or** 200 with error field):
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```json
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{ "error": "Human-readable error description" }
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```
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Fields mapped to table columns:
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- `country` → **Country** (teal pill badge)
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- `name` → **Name**
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- `producttag` → **Tag** (monospace pill, truncated with tooltip on hover)
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- `batch` → received but not displayed in the table
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### Authentication
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The webhook requires HTTP Basic Auth.
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- On `401` (GET or POST) a modal appears asking for username + password.
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- Credentials are saved to a **cookie** (`hr_auth`, 30-day expiry, `SameSite=Strict`) so the user is not prompted again.
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- On page load, the cookie is read and credentials restored before the first network call.
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- If the modal is triggered again (e.g. wrong password), the fields are **pre-filled** from the cookie and focus lands on the password field for quick confirmation.
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- `saveCreds(user, pass)` — JSON-stringifies, URI-encodes, base64-encodes, writes cookie.
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- `loadCredsFromCookie()` — reverses that; returns `{ user, pass }` or `null`.
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- `clearCredsCookie()` — available but not exposed in UI (call from browser console if needed).
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### Error handling (POST)
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Two cases:
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1. **Non-2xx response** — body is parsed; if `errData.error` exists it is shown verbatim; otherwise a generic `HTTP <status>` message is shown.
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2. **200 response with `error` field** — treated as failure: `item.error` is displayed, row is *not* added to the table.
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Errors appear in the **persistent status banner** (red, no auto-dismiss) and the scan input is selected so the user can re-scan or correct the code.
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### NDJSON / response format
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n8n sometimes returns multiple items as NDJSON (one JSON object per line) instead of a proper JSON array. `parseJson(res)` handles all three formats:
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1. Standard JSON array `[...]`
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2. Single JSON object `{...}` — passed through as-is
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3. NDJSON — split on `\n`, each line parsed individually, returned as an array
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## UI layout
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```
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┌─────────────────────────────────────────────────────┐
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│ [HR logo] Health Routine | Package Scanner │ ← white brand bar
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├─────────────────────────────────────────────────────┤
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│ [▥ SCAN HERE_____________] [User ▾] [✕ Clear] │ ← teal controls bar
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├─────────────────────────────────────────────────────┤
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│ SCAN LOG 3 scans ● │
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│ ┌───────────────────────────────────────────────┐ │
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│ │ COUNTRY │ NAME │ TAG │ │ ← sticky header
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│ ├──────────┼───────────────────────┼─────────────┤ │
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│ │ DE │ Christa Gierdahl │ 0-HR-Nail… │ │ ← newest row on top
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│ │ AT │ ... │ ... │ │
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│ │ scrollable area │ │ │
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│ └───────────────────────────────────────────────┘ │
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└─────────────────────────────────────────────────────┘
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```
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On mobile (< 620 px): scan input goes full-width on its own row; user dropdown and clear button share the row below.
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## Key behaviours
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- **On load**: cookie credentials restored → GET webhook fires → dropdown populated → scan input auto-focused
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- **Enter key**: trims input → duplicate check → clears input **immediately** → adds pending row → pushed onto FIFO queue → `drainQueue()` starts if idle
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- **Clear button**: empties the table, clears the scan input, resets the scan counter
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- **No user selected**: red toast + highlighted dropdown; does not submit
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- **401 on any request**: modal prompts for credentials (pre-filled from cookie), saves to cookie, retries original call
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- **Webhook error**: `error` field shown verbatim in persistent red banner; input selected for re-scan
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- **Network error**: dismissing error banner; input selected so user can retry
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- **Dropdown error state**: tapping/focusing the dropdown while it shows an error re-triggers `loadUsers()`
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- **NDJSON/array/object**: `parseJson()` normalises all response formats from n8n
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- **Duplicate scan**: `isDuplicate(code)` queries `.col-code` cells (present on pending, resolved, and error rows) before enqueuing
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- **Scan queue**: `scanQueue[]` is a FIFO array of `{ code, user, rowEl }`. `drainQueue()` runs sequentially in the background — one `processItem()` at a time. Scans can be added faster than the webhook responds; each gets its own pending row immediately
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- **Pending row**: shows a spinner + `Processing… <code>` while the item is in-flight; replaced in-place by the resolved row or an error row
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- **Error row**: red background, shows the error message and the raw code; code is still in `.col-code` so it cannot be re-scanned
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- **Queue pill**: teal badge next to the scan counter showing `N pending`; hidden when queue is empty
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- **Auth mid-queue**: if `processItem` gets 401, it returns `"auth"` to `drainQueue`, which pauses (`queueBusy = false`), shows the auth modal with `drainQueue` as the retry callback — queue resumes from the same item after login
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- **Clear**: also drains `scanQueue` and resets `queueBusy`
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## Scan flow (sequence)
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```
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Enter key
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└─ enqueue(code)
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├─ validation (user selected? duplicate?)
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├─ scanInput.value = "" ← immediate clear
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├─ addPendingRow(code) ← spinner row in table
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└─ scanQueue.push(...) ← add to FIFO
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└─ drainQueue() if idle
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└─ processItem() loop
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├─ fetch POST webhook
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├─ resolveRow() ← replace spinner with result
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└─ rowError() ← replace spinner with error
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```
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## Table columns (DOM)
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| Visible | Header | CSS class | Content |
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|---------|--------|-----------|---------|
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| ✓ | Country | — | `item.country` wrapped in teal badge |
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| ✓ | Name | `name-cell` | `item.name` |
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| ✓ | Tag | — | `item.producttag` in monospace pill |
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| ✗ | Code | `col-code` | Raw scanned code (`display:none`), used for duplicate detection |
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## How to run
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Open `index.html` directly in a browser (`file://`) — no server needed for local use.
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Or run the `start` script for live-reload during development:
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```bash
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./start # requires Node.js; installs live-server globally if missing
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```
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