<?php
// @author: su.at (made for myself)
class Hue {
	private static $ip = '___ADD-HUE-IP-ADDRESS-HERE___';
	private static $user = '___ADD-USER-ID-HERE___';
	
	// private methods
	private static function request($method, $api, $body) {
		$url = self::$user.'/'.$api;
		
		$options = [
			'http' => [
					'header' => "Content-type: application/x-www-form-urlencoded\r\n",
					'method' => $method,
					'content' => $body
				]
		];
		$context  = stream_context_create($options);
		
		return @json_decode(file_get_contents('http://'.self::$ip.'/api/'.$url, false, $context), true);
	}
	
	private static function get($api, $body = '') {
		return self::request('GET', $api, $body);
	}
	
	private static function put($api, $body = '') {
		return self::request('PUT', $api, $body);
	}
	
	private static function post($api, $body = '') {
		return self::request('POST', $api, $body);
	}
	
	private static function delete($api, $body = '') {
		return self::request('DELETE', $api, $body);
	}
	
	// public methods
	public static function getLightId($light) {
		if (isset($light) && !is_numeric($light)) {
			$lLight = strtolower($light);
			$lights = self::getLights();
			foreach ($lights as $i => $l) {
				if (strtolower($l['name']) == $lLight) {
					return $i;
				}
			}
		}
		return $light;
	}
	
	public static function getGroupId($group) {
		if (isset($group) && !is_numeric($group)) {
			$lGroup = mb_strtolower($group);
			$groups = self::getGroups();
			foreach ($groups as $i => $g) {
				if (mb_strtolower($g['name']) == $lGroup) {
					return $i;
				}
			}
		}
		return $group;
	}
	
	public static function getLights($light = null) {
		$light = self::getLightId($light);
		return self::get('lights'.($light ? "/$light" : ''));
	}
	
	public static function getGroups($group = null) {
		if (!is_numeric($group)) $group = self::$groups[$group];
		return self::get('groups'.($group ? "/$group" : ''));
	}
	
	public static function setLight($light, $state) {
		$light = self::getLightId($light);
		
		$key = 'on';
		if ($state == 'toggle') {
			$key = $state;
			$state = true;
		}
		
		if (strtolower($state) === 'off') $state = false;
		
		return self::put("lights/$light/state", json_encode([
			$key => $state ? true : false
		]));
	}
	
	public static function setGroup($group, $state) {
		$group = self::getGroupId($group);
		
		if ($state == 'toggle') {
			$groupData = self::get("groups/$group");
			if ($groupData['state']['any_on']) $state = false;
			else $state = true;
		}
		
		if (strtolower($state) === 'off') $state = false;
		
		return self::put("groups/$group/action", json_encode([
			'on' => $state ? true : false
		]));
	}
}