ConnectedHumber-Air-Quality-Interface

The web interface and JSON api for the ConnectedHumber Air Quality Monitoring Project.

This project contains the web interface for the ConnectedHumber air Quality Monitoring system. It is composed of 2 parts:

• A PHP-based JSON API server (entry point: api.php) that's backed by a MariaDB server
• A Javascript client application that runs in the browser

The client-side browser application is powered by Leaflet.

Note that this project is not responsible for entering data into the database. This project's purpose is simply to display the data.

System Requirements

In order to run this program, you'll need the following:

• Git
• Bash (if on Windows, try Git Bash) - the build script is written in Bash
• composer - For the server-side packages
• Node.JS
• npm - comes with Node.JS - used for building the client-side code
• A MariaDB server with a database already setup with the schema data in it. Please get in contact with ConnectedHumber for information about the database schema and structure.

Getting Started

The client-side code requires building. Currently, no pre-built versions are available (though these can be provided upon request), so this must be done from source. A build script is available, however, which automates the process - as explained below.

Building From Source

The build script ensures that everything it does will not go outside the current directory (i.e. all dependencies are installed locally).

To build from source, start off by running the setup and setup-dev build commands like this:

./build setup setup-dev

This will initialise any git submodules and install both the server-side and client-side dependencies. Once done, all you need to do is build the client-side code:

./build client

For development purposes, the client-watch command is available.

Configuration

Some configuration must be done before the application is ready for use. The first time api.php is called from a browser, it will create a new blank configuration file at data/settings.toml, if it doesn't already exist. See the settings.default.toml file in this repository for a list of configurable settings, but do not edit settings.default.toml! Instead, enter your configuration details into data/settings.toml, which overrides settings.default.toml. In particular, you'll probably want to change the settings under the [database] header - but ensure you give the entire file a careful read.

API

The server-side API is accessed through api.php, and supports a number of GET parameters. The most important of these is the action parameter, Which determines what the API will do. The following values are supported:

fetch-data

Fetches air quality data from the system for a specific data type at a specific date and time.

Parameter	Type	Meaning
datetime	date/time	Required. Specifies the date and time for which readings are desired.
reading_type	string	Required. Specifies the type of reading desired.

Examples:

https://example.com/path/to/api.php?action=fetch-data&datetime=2019-01-03%2007:52:10&reading_type=PM10

list-devices

Fetches a list of devices currently in the system.

Parameter	Type	Meaning
only-with-location	bool	Optional. If present only devices with a defined location will be returned. Useful for getting a list of devices to place on a map.

Examples:

https://example.com/path/to/api.php?action=list-devices
https://example.com/path/to/api.php?action=list-devices&only-with-location=yes

Notes

• Readings are taken every 6 minutes as standard.

Contributing

Contributions are welcome - feel free to open an issue or (even better) a pull request.

The issue tracker is the place where all the tasks relating to the project are kept.

License

This project is licensed under the Mozilla Public License 2.0. The full text of this license can be found in the LICENSE file of this repository, along with a helpful summary of what you can and can't do provided by GitHub.