115 lines
2.8 KiB
PHP
Executable File
115 lines
2.8 KiB
PHP
Executable File
#!/usr/bin/env php
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<?php
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use Mosquitto\Client;
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use Mosquitto\Message;
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define("MQTT_HOST", getenv("MQTT_HOST"));
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define("ENERGY_METER_TOPIC", getenv("ENERGY_METER_TOPIC"));
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define("DOOR_TOPIC", getenv("DOOR_TOPIC"));
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define("ENERGY_PRICE", floatval(getenv("ENERGY_PRICE")));
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define("OUTPUT_TOPIC_PREFIX", getenv("OUTPUT_TOPIC_PREFIX"));
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echo "using configuration:\n";
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echo " MQTT_HOST: " . MQTT_HOST . "\n";
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echo " ENERGY_METER_TOPIC: " . ENERGY_METER_TOPIC . "\n";
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echo " DOOR_TOPIC: " . DOOR_TOPIC . "\n";
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echo " ENERGY_PRICE: " . ENERGY_PRICE . "\n";
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echo " OUTPUT_TOPIC_PREFIX: " . OUTPUT_TOPIC_PREFIX . "\n";
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$doorStatus = null;
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$energyCounter = null;
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$doorOpenEnergy = null;
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$doorOpenTime = null;
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$lastOutput = 0;
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$c = new Client();
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if (getenv("MQTT_USER") && getenv("MQTT_PASS")) {
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echo "using credentials\n";
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echo " MQTT_USER: " . getenv("MQTT_USER") . "\n";
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echo " MQTT_PASS: " . str_repeat("*", strlen(getenv("MQTT_PASS"))) . "\n";
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$c->setCredentials(getenv("MQTT_USER"), getenv("MQTT_PASS"));
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}
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$c->connect(MQTT_HOST, 1883, 60);
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$c->subscribe(ENERGY_METER_TOPIC, 2);
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$c->subscribe(DOOR_TOPIC, 2);
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$c->onMessage(function (Message $message) {
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switch ($message->topic) {
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case ENERGY_METER_TOPIC:
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energy($message->payload);
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break;
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case DOOR_TOPIC:
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door($message->payload);
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break;
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}
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});
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while (true) {
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while ($lastOutput > time() - 10) {
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$c->loop(1000);
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}
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output();
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}
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function door($newStatus)
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{
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global $doorStatus, $energyCounter, $doorOpenEnergy, $doorOpenTime;
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if (is_null($energyCounter)) {
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return;
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}
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$newStatus = (bool) $newStatus;
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if ($newStatus === $doorStatus) {
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return;
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}
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$doorStatus = $newStatus;
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if (!$newStatus) {
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$doorOpenEnergy = $energyCounter;
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$doorOpenTime = time();
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}
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output();
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}
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function energy($value)
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{
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global $energyCounter;
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$energyCounter = (float) $value;
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output();
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}
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function output()
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{
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global $doorStatus,
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$energyCounter,
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$doorOpenEnergy,
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$doorOpenTime,
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$lastOutput,
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$c;
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if ($doorStatus) {
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$myUsage = $energyCounter - $doorOpenEnergy;
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$myCost = $myUsage * ENERGY_PRICE;
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$c->publish(
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OUTPUT_TOPIC_PREFIX . "/used_energy_float",
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strval($myUsage),
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2
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);
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$c->publish(OUTPUT_TOPIC_PREFIX . "/price_float", strval($myCost), 2);
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$c->publish(
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OUTPUT_TOPIC_PREFIX . "/price_string",
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number_format($myCost, 2, ",", "."),
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2
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);
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} else {
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$c->publish(OUTPUT_TOPIC_PREFIX . "/used_energy_float", "", 2);
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$c->publish(OUTPUT_TOPIC_PREFIX . "/price_float", "", 2);
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$c->publish(OUTPUT_TOPIC_PREFIX . "/price_string", "", 2);
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}
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$lastOutput = time();
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}
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