php controller for https://github.com/bahbka/pebble-my-data

example.php

<?php

require_once __DIR__ . '/Pebble.php';

$pebble = new Pebble;
$pebble->onUp(function ($pebble) {
	$pebble->notify();
	$pebble->setResult("UP!");
});
$pebble->onBottom(function ($pebble) {
	$pebble->notify();
	$pebble->setResult("Down \n" . $pebble->getLatitude() . "\n" . $pebble->getLongitude());
});
$pebble->onMiddle(function ($pebble) {
	$pebble->notify();
	$pebble->setResult("Mid \n" . $pebble->getPebbleId());
});
$pebble->render(function ($pebble) {
	$pebble->setResult("Hi!");
});

Pebble.php

<?php
/**
 * @see api: https://github.com/bahbka/pebble-my-data/blob/master/README.md
 * @author Martin Sadový
 */
class Pebble
{

	/**
	 * Font
	 */
	const GOTHIC_14 = 1,
		GOTHIC_14_BOLD = 2,
		GOTHIC_18 = 3,
		GOTHIC_18_BOLD = 4,
		GOTHIC_24 = 5,
		GOTHIC_24_BOLD = 6,
		GOTHIC_28 = 7,
		GOTHIC_28_BOLD = 8;

	/**
	 * Default refresh time
	 */
	const DEFAULT_REFRESH_TIME = 300;

	/**
	 * Return data
	 * @var array
	 */
	protected $data = array();

	/**
	 * @var bool
	 */
	protected $called = FALSE;

	function __construct()
	{
		$this->data = array(
			"content" => "Nothing to response",
			"refresh" => self::DEFAULT_REFRESH_TIME,
			"vibrate" => 0,
			"font" => self::GOTHIC_24_BOLD,
			"scroll" => 1,
			"light" => 0,
			"blink" => 0,
			"updown" => 0,
		);
	}

	/**
	 * Return pebbleId
	 * @return mixed
	 */
	public function getPebbleId()
	{
		return $_SERVER["HTTP_PEBBLE_TOKEN"];
	}

	/**
	 * Return GPS latitude
	 * @return null|string
	 */
	public function getLatitude()
	{
		return isset($_GET["lat"]) ? $_GET["lat"] : NULL;
	}

	/**
	 * Return GPS longitude
	 * @return null|string
	 */
	public function getLongitude()
	{
		return isset($_GET["lon"]) ? $_GET["lon"] : NULL;
	}

	/**
	 * Set theme to black
	 */
	public function setThemeBlack()
	{
		$this->data['theme'] = 0;
	}

	/**
	 * Set theme to white
	 */
	public function setThemeWhite()
	{
		$this->data['theme'] = 1;
	}

	/**
	 * Set result
	 * @param     $content
	 * @param int $font
	 */
	public function setResult($content, $font = self::GOTHIC_24_BOLD)
	{
		$this->data['content'] = $content;
		$this->data['font'] = $font;
	}


	/**
	 * Set time to next refresh
	 * @param int $seconds
	 */
	public function setRefreshTime($seconds)
	{
		if ($seconds < 1) {
			$seconds = self::DEFAULT_REFRESH_TIME;
		}
		$this->data['refresh'] = (int) $seconds;
	}

	/**
	 * Set some notify user
	 * @param int  $vibrate
	 * @param bool $light
	 * @param int  $blink
	 */
	public function notify($vibrate = 1, $light = TRUE, $blink = 0)
	{
		$this->data['light'] = (int) $light;
		$this->data['vibrate'] = (int) $vibrate;
		$this->data['blink'] = (int) $blink;
	}

	/**
	 * Event on click on bottom button
	 * @param callable $callback
	 */
	public function onBottom(callable $callback)
	{
		if (isset($_GET["down"])) {
			$callback($this, $_GET["down"]);
			$this->called = TRUE;
		}
		$this->data['scroll'] = 0;
		$this->data['updown'] = 1;
	}

	/**
	 * Event on click on up button
	 * @param callable $callback
	 */
	public function onUp(callable $callback)
	{
		if (isset($_GET["up"])) {
			$callback($this, $_GET["up"]);
			$this->called = TRUE;
		}
		$this->data['scroll'] = 0;
		$this->data['updown'] = 1;
	}

	/**
	 * Event on click on middle button
	 * @param callable $callback
	 */
	public function onMiddle(callable $callback)
	{
		if (isset($_GET["select"])) {
			$callback($this, $_GET["select"]);
			$this->called = TRUE;
		}
	}

	/**
	 * Render output and call callback when user did not click on buttom
	 * @param callable $defaultCallback
	 */
	public function render(callable $defaultCallback)
	{
		if (!$this->called) {
			$defaultCallback($this);
		}
		echo json_encode($this->data);
	}

}