Dark Sky API Client

A strongly typed simple client to talk to the Dark Sky API.

Getting Started

To get started, you will need to get a secret key from Dark Sky: https://darksky.net/dev/account.

Client Adapters

This package makes use of HTTP adapters to connect to the API. Two are included out of the box, a Guzzle adapter and a Simple adapter (using file_get_contents). If you have specialised connection needs, simply implement the ClientAdapterInterface and pass to the client factory.

If a ClientAdapter is not specified, the package will make use of the GuzzleAdapter if Guzzle is available, falling back to the SimpleAdapter (using file_get_contents) if not.

If a guzzle adapter is provided (or the implemented ClientAdapterInterface supports it), multiple requests will be made concurrently.

Usage

Install the package using composer:

composer require philwc/dark-sky

Simple Usage

Client

To use the Client use the ClientFactory:

require_once __DIR__ . '/vendor/autoload.php';

$client = philwc\DarkSky\ClientFactory::get(
    getenv('SECRET_KEY')
);

$request = \philwc\DarkSky\Entity\ForecastRequest::fromArray([
    'latitude' => 53.4084,
    'longitude' => 2.9916,
]);

$weather = $client->retrieve($request);

echo $weather->getCurrently()->getSummary() . PHP_EOL; // Mostly Cloudy
echo $weather->getCurrently()->getIcon()->toString() . PHP_EOL; // partly-cloudy-day
echo $weather->getCurrently()->getTemperature()->toFloat() . PHP_EOL; // 17.71
echo $weather->getCurrently()->getTemperature()->toString() . PHP_EOL; // 17.71 °F

Advanced Usage

It is possible to pass both a PSR-16 cache adapter, as well as a PSR-3 logger into the ClientFactory:

require_once __DIR__ . '/vendor/autoload.php';

$log = new Monolog\Logger('test');
$log->pushHandler(new Monolog\Handler\ErrorLogHandler());

philwc\DarkSky\ClientFactory::setLogger($log);

$client = philwc\DarkSky\ClientFactory::get(
    getenv('SECRET_KEY'), 
    new Cache\Adapter\PHPArray\ArrayCachePool(), 
    new philwc\DarkSky\ClientAdapter\GuzzleAdapter()
);

When creating your request, you can pass a parameters key to customise the values you get back from DarkSky.

$request = \philwc\DarkSky\Entity\ForecastRequest::fromArray([
    'latitude' => 53.4084,
    'longitude' => 2.9916,
    'parameters' => ['lang' => 'en', 'units' => 'si']
]);
$weather = $client->retrieve($request);

echo $weather->getCurrently()->getSummary() . PHP_EOL; // Mostly Cloudy
echo $weather->getCurrently()->getIcon()->toString() . PHP_EOL; // partly-cloudy-day
echo $weather->getCurrently()->getTemperature()->toFloat() . PHP_EOL; // 17.71
echo $weather->getCurrently()->getTemperature()->toString() . PHP_EOL; // 17.71 °C

// This second call will now be retrieved from the cache
$weather = $client->simpleRetrieve(53.4808, 2.2426, ['units'=>'si', 'lang' => 'en']);

echo $weather->getCurrently()->getSummary() . PHP_EOL; // Mostly Cloudy
echo $weather->getCurrently()->getIcon()->toString() . PHP_EOL; // partly-cloudy-day
echo $weather->getCurrently()->getTemperature()->toFloat() . PHP_EOL; // 17.71
echo $weather->getCurrently()->getTemperature()->toString() . PHP_EOL; // 17.71 °C

Caching

This package is also able to make use of a PSR-16 caching adapter to cache calls from the API. Simply pass a relevant cache service (see https://packagist.org/providers/psr/simple-cache-implementation) to the client factory to use. No caching is provided out of the box.

It is possible to set the TTL for the cache independently for each request type. On the client, use setForecastTTL or setTimeMachineTTL to specify. By default, the following TTLs are set:

• ForecastClient - 60s
• TimeMachineClient - 86400s (24 hours)

$client = philwc\DarkSky\ClientFactory::get(
    getenv('SECRET_KEY'),
    new Cache\Adapter\PHPArray\ArrayCachePool()
);

$client->setForecastTTL(120);

$request = \philwc\DarkSky\Entity\ForecastRequest::fromArray([
    'latitude' => 53.4084,
    'longitude' => 2.9916,
]);

$weather = $client->retrieve($request);

// This second call will now be cached for 120s
$weather = $client->retrieve($request);

Concurrent Requests

It is possible to make concurrent requests to the DarkSky API. Simply create a RequestCollection and pass to retrieve

$client = philwc\DarkSky\ClientFactory::get(
    $secretKey,
    new Cache\Adapter\PHPArray\ArrayCachePool(),
    new philwc\DarkSky\ClientAdapter\SimpleAdapter()
);

$requestCollection = new \philwc\DarkSky\EntityCollection\RequestCollection();
$manchesterRequest = \philwc\DarkSky\Entity\ForecastRequest::fromArray([
    'latitude' => 53.4808,
    'longitude' => 2.2426,
    'parameters' => ['lang' => 'en', 'units' => 'si']
]);

$requestCollection->add($manchesterRequest);
$liverpoolRequest = \philwc\DarkSky\Entity\ForecastRequest::fromArray([
    'latitude' => 53.4084,
    'longitude' => 2.9916,
    'parameters' => ['lang' => 'en', 'units' => 'si']
]);
$requestCollection->add($liverpoolRequest);

$weatherCollection = $client->retrieve($requestCollection);

foreach ($weatherCollection as $weather) {
    echo $weather->getCurrently()->getSummary() . PHP_EOL;
    echo $weather->getCurrently()->getIcon()->toString() . PHP_EOL;
    echo $weather->getCurrently()->getTemperature()->toFloat() . PHP_EOL;
    echo $weather->getCurrently()->getTemperature()->toString() . PHP_EOL;
}