Calq

class Calq {

	public static function trackSignup($action) {
		self::trackLogin($action);
	}

	public static function trackLogin($action) {
		try {
			self::updateUserIdentity();
			self::setupUserProfile();

			$data = array(
				'action_name' => (string) $action,
				'actor' => (string) self::getSessionUserId(),
				'properties' => (object) null
			);

			self::callCalqApi($data, 'track');
		} catch (Exception $exc) {
			self::handleCalqException($exc);
		}
	}

	public static function trackLogout($action) {
		try {
			$data = array(
				'action_name' => (string) $action,
				'actor' => (string) self::getCookiesUserId(),
				'properties' => (object) null
			);

			self::callCalqApi($data, 'track');
			self::deleteCookiesUserId();
		} catch (Exception $exc) {
			self::handleCalqException($exc);
		}
	}

	public static function trackEvent($action, array $properties = array()) {
		try {
			if ($action == 'login' || $action == 'signup') {
				self::updateUserIdentity();
				self::setupUserProfile();
				$actor = self::getSessionUserId();
			} else {
				$actor = self::getCookiesUserId();
			}

			$data = array(
				'action_name' => (string) $action,
				'properties' => (object) $properties,
				'actor' => (string) $actor
			);

			self::callCalqApi($data, 'track');

			if ($action == 'logout') {
				self::deleteCookiesUserId();
			}
		} catch (Exception $exc) {
			self::handleCalqException($exc);
		}
	}

	protected static function handleCalqException(Exception $exc) {
		Log::error("Unable to send calq event. "
			. "Code: " . $exc->getCode() . " "
			. "Message: " . $exc->getMessage() . " "
			. "Trace: " . $exc->getTraceAsString());
	}

	protected static function updateUserIdentity() {
		$data = array(
			'old_actor' => (string) self::getCookiesUserId(),
			'new_actor' => (string) self::getSessionUserId()
		);

		self::callCalqApi($data, 'transfer');

		$calqData = new stdClass();
		$calqData->HasTracked = false;
		$calqData->IsAnon = true;
		$calqData->actor = self::getSessionUserId();
		setcookie('_calq_d', base64_encode(json_encode($calqData)), Config::get('plugins.calq.cookie_expire'), Config::get('plugins.calq.cookie_path'), Config::get('plugins.calq.cookie_domain'));
	}

	protected static function setupUserProfile() {
		$properties = array(
			'$email' => Auth::user()->email,
			'$full_name' => Auth::user()->name
		);

		$data = array(
			'actor' => (string) self::getSessionUserId(),
			'properties' => (object) $properties
		);

		self::callCalqApi($data, 'profile');
	}

	protected static function callCalqApi(array $data, $method) {
		if(App::environment() == 'production') {
			$data['write_key'] = Config::get('plugins.calq.paddle-vendor.key');
		} else {
			$data['write_key'] = Config::get('plugins.calq.paddle-vendor.staging-key');
		}
		$data['ip_address'] = Request::getClientIp();

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, Config::get('plugins.calq.url') . '/' . $method);
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('data' => json_encode($data))));
		curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));

		$decodedResponse = json_decode(curl_exec($ch));
		$info = curl_getinfo($ch);

		if ($info['http_code'] !== 200) {
			throw new Exception($decodedResponse->error, $info['http_code']);
		}

		curl_close($ch);
	}

	public static function getSessionUserId() {
		if (Auth::check()) {
			switch (Config::get('auth.model')) {
				case 'Vendor':
					return 'paddle-vendor-' . Auth::user()->id;
				case 'User':
					return 'paddle-user-' . Auth::user()->id;
			}
		}
	}

	public static function getCookiesUserId() {
		if (!isset($_COOKIE['_calq_d'])) {
			$calqData = new stdClass();
			$calqData->HasTracked = false;
			$calqData->IsAnon = true;
			$calqData->actor = md5(uniqid());
			setcookie('_calq_d', base64_encode(json_encode($calqData)), Config::get('plugins.calq.cookie_expire'), Config::get('plugins.calq.cookie_path'), Config::get('plugins.calq.cookie_domain'));
			return $calqData->actor;
		} else {
			return json_decode(base64_decode($_COOKIE['_calq_d']))->actor;
		}
	}

	protected static function deleteCookiesUserId() {
		setcookie('_calq_d', NULL, time() - 3600, Config::get('plugins.calq.cookie_path'), Config::get('plugins.calq.cookie_domain'));
	}

}