# Flask Digital Signage (simple)

Lightweight digital signage platform using **Flask + SQLite**.

## Features

- Central **admin** can manage companies, users, displays.
- Admin can **impersonate** any company user (no password).
- Company users can:
  - Create playlists
  - Add slides (image/video/webpage)
  - Assign playlists to displays
- Displays are public **16:9 player webpages** suitable for kiosk browsers.

## Quickstart (Windows)

```bat
python -m venv .venv
.venv\Scripts\activate
pip install -r requirements.txt

set FLASK_APP=app
flask init-db --admin-email beheer@alphen.cloud --admin-pass admin
flask run --debug
```

If Flask can't discover the app automatically, use:

```bat
set FLASK_APP=app:create_app
flask run --debug
```

Open http://127.0.0.1:5000

## Notes

- SQLite DB is stored at `instance/signage.sqlite`.
- Uploaded files go to `app/static/uploads/`.

## Display player

Open:

- `http://<host>/display/<token>` for live playback (counts towards the concurrent display limit)
- `http://<host>/display/<token>?preview=1` for preview (does not count towards the concurrent display limit)

### Live updates

The player keeps itself up-to-date automatically:

- It listens to `GET /api/display/<token>/events` (Server-Sent Events) and reloads the playlist immediately when it changes.
- It also does a fallback playlist refresh every 5 minutes for networks/proxies that block SSE.

## SMTP / Forgot password

This project includes a simple **forgot password** flow. SMTP configuration is read from environment variables.

Recommended: put these in a local `.env` file in the repo root. Flask (via `python-dotenv`) will auto-load it on startup. `.env` is already gitignored.

You can start from `.env.example`:

```bat
copy .env.example .env
```

### Example

```bat
REM Option A: set env vars in the same terminal where you run `flask run`
set SMTP_HOST=smtp.strato.de
set SMTP_PORT=587
set SMTP_USERNAME=beheer@alphen.cloud
set SMTP_PASSWORD=***
set SMTP_FROM=beheer@alphen.cloud
set SMTP_STARTTLS=1
set SMTP_DEBUG=1

REM Option B: put the same keys/values in a .env file instead
```

Security note: do **not** commit SMTP passwords to the repo. Prefer secrets management and rotate leaked credentials.

### Troubleshooting mail delivery

If the reset email is not received:

1. Set `SMTP_DEBUG=1` and request a reset again.
2. Watch the Flask console output for SMTP responses / errors.
3. Verify:
   - `SMTP_USERNAME` and `SMTP_FROM` are allowed by your provider.
   - You are using STARTTLS (port 587).
   - The recipient mailbox isn’t filtering it (spam/quarantine).