OnSite-Presence-Monitor/app.py at main · ProtoXCode/OnSite-Presence-Monitor · GitHub

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import urllib3
import os
from pathlib import Path

import yaml
from dash import Dash, html, Output, Input, dcc
from flask import request

# Change the imported client to match your ERP system.
from api_client.mock_client import MockERPClient as APIClient
from logger import logger, access_logger

__version__ = '1.1.4'

"""
OnSite Presence Monitor
=======================

Author: Tom Erik Harnes
Created: 2025-06

A Dash-based dashboard for displaying currently clocked-in employees
retrieved from a connected ERP system. Primarily designed for use in
factory and industrial environments, where knowing who is physically
present on-site is critical for safety, evacuation, and visibility.

Supports:
- Real-time auto-refresh of presence data
- Location-based filtering (Factory, Office, Remote)
- Configurable ERP client (mock, Monitor G5, etc.)
- Responsive UI with image fallback handling
- Kiosk mode and production deployment (via Waitress)

Configuration is managed via `config.yaml`, generated automatically
on first launch if missing. Employee images are loaded from the path
defined in the config file.

This file is the entry point for both development and production use.

Usage:
    python app.py             # development mode
    python run_production.py  # production via Waitress
"""

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

DEFAULT_CONFIG = {
    'app_title': 'OnSitePresence Monitor',
    'header_mode': 'both',  # text | logo | both
    'worker_card_mode': 'image_name',  # image_name | name_only | name_logo
    'company_logo': 'assets/logo.png',
    'update_interval_seconds': 30,
    'image_directory': 'assets/employee_images/',
    'department_logo_directory': 'assets/department_logos/',
    'erp_api_url': 'https://{host}:8001/{languageCode}/{companyNumber}/',
    'erp_api_user': '',
    'erp_api_key': '',
    'erp_api_client': '',
    'erp_api_secret': '',
    'db_type': '',
    'db_host': '',
    'db_port': 5432,
    'db_name': 'onsite',
    'db_user': 'user',
    'db_password': 'password',
    'jwt_secret': '',
    'location': 1,
    'jwt_algo': 'HS256',
    'message_no_workers': 'No one is currently clocked in'
}


def load_config(path='config.yaml') -> dict:
    """ Loads local config file, creates a default if the file is missing. """
    if not os.path.exists(path):
        logger.info(f'No config file found, creating default at {path}')
        with open(path, mode='w', encoding='utf-8') as f:
            yaml.dump(DEFAULT_CONFIG, f)
        return DEFAULT_CONFIG
    with open(path, mode='r', encoding='utf-8') as f:
        return yaml.safe_load(f)


CONFIG = load_config()
UPDATE_INTERVAL = CONFIG['update_interval_seconds'] * 1000  # Convert to ms
IMAGE_DIRECTORY = CONFIG['image_directory']
LOCATION = CONFIG['location']
MESSAGE_NO_WORKERS = CONFIG['message_no_workers']
APP_TITLE = CONFIG['app_title']
JPEG_WEBP = ('.png', '.jpg', '.jpeg', '.webp')

erp_client = APIClient()
app = Dash(title=APP_TITLE,
           meta_tags=[
               {'name': 'viewport', 'content':
                   'width=device-width, initial-scale=1'},
               {'name': 'description',
                'content': 'Live factory presence monitor dashboard'}
           ])

server = app.server

app.index_string = """
<!DOCTYPE html>
<html>
    <head>
        {%metas%}
        <title>{%title%}</title>
        {%favicon%}
        {%css%}
        <link rel="apple-touch-icon" href="/assets/apple-touch-icon.png">
    </head>
    <body>
        {%app_entry%}
        <footer>
            {%config%}
            {%scripts%}
            {%renderer%}
        </footer>
    </body>
</html>
"""


def render_header() -> html.Div | html.H2:
    mode = CONFIG.get('header_mode', 'text')
    logo = CONFIG.get('company_logo')

    if mode == 'logo' and logo and os.path.exists(logo):
        return html.Div(
            html.Img(src=logo, className='header-logo'),
            className='header'
        )

    if mode == 'both' and logo and os.path.exists(logo):
        return html.Div(
            [
                html.Img(src=logo, className='header-logo'),
                html.H2(APP_TITLE)
            ],
            className='header'
        )

    # Fallback: text only
    return html.H2(APP_TITLE)


app.layout = html.Div([
    render_header(),
    dcc.Interval(id='update-interval', interval=UPDATE_INTERVAL,
                 n_intervals=0),
    html.Div(id='worker-container', className='dashboard-container')
])


def get_image_path(worker_id: int) -> str:
    """ Returns the absolute path to a worker image. """
    base = Path(IMAGE_DIRECTORY)

    try:
        for ext in JPEG_WEBP:
            candidates = base / f'{worker_id}{ext}'
            if candidates.exists():
                return str(candidates)

        for file in base.iterdir():
            if (file.stem == str(worker_id) and
                    file.suffix.lower() in JPEG_WEBP):
                return str(file)  # Checks for perfect match
            elif (str(worker_id) in file.stem and
                  file.suffix.lower() in JPEG_WEBP):
                return str(file)  # Checks for partial match

    except (FileNotFoundError, PermissionError, OSError):
        pass  # Network share offline, permission error, etc.

    # Fallback default
    return 'assets/default.png'


def get_department_logo(department: str) -> str:
    base = Path(CONFIG['department_logo_directory'])
    if not department:
        return 'assets/default_dept.png'

    for ext in JPEG_WEBP:
        p = base / f'{department}{ext}'
        if p.exists():
            return str(p)

    return 'assets/default_dept.png'


def render_workers() -> list[html.Div] | html.Div:
    active_workers = [w for w in erp_client.get_workers() if
                      w.status and w.location == LOCATION]
    logger.info(f'Active workers updated: {len(active_workers)}')

    if not active_workers:
        return html.Div(MESSAGE_NO_WORKERS, className='empty-message')

    return [
        render_worker_card(worker)
        for worker in active_workers
    ]


def render_worker_card(worker) -> html.Div:
    mode = CONFIG.get('worker_card_mode', 'image_name')

    children = []

    if mode == 'image_name':
        children.extend([
            html.Img(src=get_image_path(worker.id_number)),
            html.P(worker.name)
        ])

    elif mode == 'name_only':
        children.append(
            html.P(worker.name, className='name_only')
        )
        return html.Div(
            children,
            className='card name-only-card badge-blue'
        )

    elif mode == 'name_logo':
        children.extend([
            html.Img(
                src=get_department_logo(worker.department),
                className='dept_logo'
            ),
            html.P(worker.name)
        ])

    else:
        # Fallback so nothing ever breaks the kiosk
        children.append(html.P(worker.name))

    return html.Div(children, className='card')


@app.callback(
    Output('worker-container', 'children'),
    Input('update-interval', 'n_intervals'))
def update_worker_cards(_):
    client_ip = request.headers.get('X-Forwarded-For', request.remote_addr)
    user_agent = request.headers.get('User-Agent', 'Unknown')

    access_logger.info(
        'refresh',
        extra={
            'client_ip': client_ip,
            'path': '/refresh',
            'user_agent': user_agent
        }
    )

    return render_workers()


if __name__ == '__main__':
    logger.info('Starting OnSite Presence Monitor from app.py')
    app.run(debug=True)