<?php
class RecordManager{
	public static $records;

	public function create ($deviceId, $type, $value) {
		$subDeviceId = Db::loadOne('SELECT * FROM subdevices WHERE device_id = ? AND type = ?;', array($deviceId, $type))['subdevice_id'];
		if ($subDeviceId == '') {
			return false;
		};
		$record = array (
			'subdevice_id' => $subDeviceId,
			'value' => $value,
		);
		try {
			return Db::add ('records', $record);
		} catch(PDOException $error) {
			echo $error->getMessage();
			die();
		}
	}

	public static function setExecuted($recordId) {
		try {
			Db::edit ('records', ['execuded' => 1], 'WHERE record_id = ?', array($recordId));
		} catch(PDOException $error) {
			echo $error->getMessage();
			die();
		}
	}

	public static function getRecordById($recordId) {
		return Db::loadOne('SELECT * FROM records WHERE record_id = ?;', array($recordId));
	}

	public static function getLastInsertedRecordId() {
		return Db::insertId();
	}

	public static function getLastRecord($subDeviceId, $num = 1) {
		if ($num == 1)
		return Db::loadOne('SELECT * FROM records WHERE subdevice_id = ? AND value != ? ORDER BY time DESC;', array($subDeviceId, 999));
		return Db::loadAll('SELECT * FROM records WHERE subdevice_id = ? AND value != ? ORDER BY time DESC LIMIT ?;', array($subDeviceId, 999, $num));
	}

	public static function getAllRecord($subDeviceId, $timeFrom, $timeTo) {
		return Db::loadAll('SELECT * FROM records WHERE subdevice_id = ? AND time >= ? AND time <= ? AND value != ? ORDER BY time;', array($subDeviceId, $timeFrom, $timeTo, 999));
	}

	public static function getAllRecordForGraph($subDeviceId, $period = "day", $groupBy = "hour") {
		$periodLocal = '- 1 ' . strtoupper($period);
		$dateTime = new DateTime();
		$dateTime = $dateTime->modify($periodLocal);
		$dateTime = $dateTime->format('Y-m-d');
		$groupBy = strtoupper($groupBy).'(time)';
		$sql = 'SELECT value, time FROM records
		WHERE
		subdevice_id = ?
		AND
		value != 999
		AND
		time > ?
		GROUP BY '.$groupBy.'
		ORDER BY time ASC';
		//TODO: Prasárna Opravit
		return Db::loadAll($sql, array($subDeviceId, $dateTime));
	}

	public static function clean ($day) {
		if (isset($day)) {
			Db::command ('DELETE FROM records WHERE `time` < ADDDATE(NOW(), INTERVAL -? DAY);', array($day));
		}
	}


	//TODO: zkontrolovat jestli neco nezbilo po smazaní
	public static function cleanSubdeviceRecords ($subDeviceId) {
		Db::command ('DELETE FROM records WHERE subdevice_id = ?);', array($subDeviceId));
	}
}
?>