<?php
/*
Usage:
  - platform: command_line
    name: foo
    command: "php -f /home/homeassistant/vzapi.php 1"
    unit_of_measurement: "W"

Todo:
  - Rewrite in Python
  - Use UUID instead of ID
*/

if($argc != 2) die('id?');
$sensor = (int)$argv[1];

error_reporting(E_ALL);

$mysql_serv = 'localhost';
$mysql_user = 'vz-read';
$mysql_pass = '*****';
$mysql_datb = 'volkszaehler';

$sql = new mysqli($mysql_serv, $mysql_user, $mysql_pass, $mysql_datb);

//Yes, I know this can be used for SQL injections.
$data = $sql->query("SELECT * FROM `data` WHERE `channel_id` = ".$sensor." ORDER BY `timestamp` DESC LIMIT 1 ");
if($data->num_rows != 1) die();
$data = $data->fetch_object();

if($data->timestamp/1000 <= time()-300) die();

echo $data->value;

?>