Hamngatan

A wrapper around Linkopings API for hamngatans air quality measurements written for Nodejs.

It is written in es6 and compiled to es5 to be used with node. Check the code if you want some inspiration.

This tool/lib helps you with:

1. Constructing the URI
2. Parse the XML
3. Check the returned data
4. Parse and format as javascript (The CLI outputs JSON)
5. Throws error on failures

Information about the API (in swedish)

Usage

You could use the lib like this:

var Hamngatan = require('hamngatan');

var hamngatan = new Hamngatan('your api key');

hamntagan.get({
	from: '2015-05-12'
}, function(err, result) {
	if(err) throw err;

	console.log(result);
});

Or you can use Promise:

var Hamngatan = require('hamngatan');

var hamngatan = new Hamngatan('your api key');

hamntagan.get({
	from: '2015-05-12'
}).then(function(result) {
	console.log(result);
})
.catch(function(err) {
	throw err;
});

Use only the formatter

The formatter from XML to javascript can be used with the static function Hamngatan.format(xmlString). This will format the XML to javascript. The XML needs to be from this API as this only extracts the important parts of the response.

CLI

There is a CLI interface that is installed in node_modules/.bin/hamngatan. This makes it possible to use this tool on the command line. The CLI outputs JSON to stdout and you could save it by using > filename.json if you will.

With the flag --help it gives the help output:

  Usage: cli [options]

  Options:

    -h, --help             output usage information
    -V, --version          output the version number
    -k, --apikey [apikey]  API key for linkoping API
    --from [date]          From date
    --to [date]            To date

Example:

$ node_modules/.bin/hamngatan --apikey fdsjklsdfhsdfsk --from 2015-01-01
[
  {
    "SystemCodeNumber": "linkoping",
    "LastUpdated": "2015-01-15T09:45:00.000Z",
    "PM10": 3.719
  },
  {
    "SystemCodeNumber": "linkoping",
    "LastUpdated": "2015-01-15T09:30:00.000Z",
    "PM10": 4.006
  },
 ...

If you install it globally with npm install -g hamngatan you will not need the node_modules/.bin/ part.

Contribution

Hi awesome! Please contribute, use es6 and the styling located in .eslintrc and lint your code. Right now eslint does not support modules :(