AtmoEyes Demo

What is this?

This repo contains all the code used for the demo presented by Group A of UNIPA (Università degli Studi di Palermo) for "Samsung Innovation Campus 2021 Smart Things Edition" in Palermo. Eventually 3 of the 4 members of Group A (atmoeyes) won the edition.

Below are developement notes.

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Routes

/frontend

URI	Method	Description
/	GET	Live Map page

/backend

URI	Method	Description
/data/aqi	GET	Returns GeoJSON aqi data layer
/data/aqi/send	POST	Send sensor data to aqi data layer (CURRENTLY UNPROTECTED)

Data

AQI Data - Post Body

Value	Lon	Lat
Int	Float	Float

GeoJSON Structure

Tool: Edit GeoJSON Data

{
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "properties": {
                "aqi": 7
            },
            "geometry": {
                "type": "Point",
                "coordinates": [-30, 10]
            }
        }, 
    ...
}

Frontend code maintenance

Specify project specific parameters in .atmoeyes

{
    "backendUrl": "https://emanuelemessina.altervista.org/uni/ssmic2021/atmoeyes/backend"
}

Backend code maintenance

Routing Flow

1. Calls to /backend are redirected to kernel.php via .htaccess RewriteRule.
2. kernel.php - calls db, calls router.
3. /db.php - initializes db connection, declares db methods.
4. /router/router.php - declares route matching methods, calls routes.php.
5. /router/routes.php - sets application/json response header, calls declared routes, which are then parsed by the router. If no match is found, 404 is thrown.
6. When a match is found, execution is passed to the matched route controller.

Examples

Update a record with QuickQuery

$input_schema = [
    "id" => "int",
    "value" => "int"
];

$qq = new QuickQuery('json-input', $input_schema);
$validated_data = $qq->getValidatedData();
$response = $qq->update(
    'data', // table
    ['value'], // fields to update
    [ // where clause
        'id' => $validated_data['id'] 
    ]);

echo json_encode($response);

Validation is automatically done and all errors are reported in the response.
Table names are already prefixed with 'atmoeyes_'.

Declaring routes in routes.php

get('/data/aqi/$optional_get_param', 'aqi-data.php'); 

• Controller files are placed under /controllers.
• Optional GET parameters are accessible in the controller via $parameters array.

Docs

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Info

CAQI

Mapbox

Heatmap

Live Data Updates

PHP

PHP Router

Medoo

Firebase

Get Started