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#!/usr/bin/php

<?php
/************************************************************************************************************************
	Uses curl to get Smartthing's location mode (away or home) and set specified zoneminder camera id's function
	(Monitor or Modect)	based on ST mode. Requires personal authorization token (PAT) from your Smarthings account
	https://account.smartthings.com/tokens

	Scott W. Olsen
	2021-04-28
*************************************************************************************************************************/
$Monitors = array("1", "3"); // Zoneminder monitor id's for monitor function to set
$ZM_Host = "https://ZONEMINDERHOST"; // Zoneminder's host url
$ZM_Login = "user=USER&pass=PASSWORD"; // Zoneminder's login info
$ST_LocationID = "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"; // your SmartThings Location ID
$ST_PAT = "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"; // Your SmartThings personal access token

writelog("Initiating check for monitor id's : " . implode(", ", $Monitors));
$LocationMode = NULL;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.smartthings.com/v1/locations/$ST_LocationID/modes/current");
$header = array("Authorization: Bearer $ST_PAT");
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_VERBOSE, false);
$result = curl_exec($ch);
if($result != false) {
	$obj = json_decode($result);
	//echo "\nbegin output\n$result\nend output\n";
	//displayObject($obj);
	$LocationMode = $obj->name;
	writelog("SmartThings Location mode = $LocationMode");
}
else writelog("No Results from ST");
if(!is_null($LocationMode)) {
	// get API Key from Zoneminder.
	curl_setopt($ch, CURLOPT_URL, "$ZM_Host/zm/api/host/login.json");
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // Used to accept self signed SSL cert if using SSL
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $ZM_Login);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_VERBOSE, false); // Set to true to see output of curl data when communicating with host.
	$result = curl_exec($ch);
	if($result != false) {
		$API_key = json_decode($result);
		//displayObject($API_key);

		foreach($Monitors as $id) {
			curl_setopt($ch, CURLOPT_POST, false);
			curl_setopt($ch, CURLOPT_URL, "$ZM_Host/zm/api/monitors/$id.json?token=$API_key->access_token");
			$result = curl_exec($ch);
			$mobj = json_decode($result); // need error checking here.
			//displayObject($mobj);
			//print $result;
			$MonitorFunction = $mobj->monitor->Monitor->Function;
			writelog("Zoneminder Monitor $id function = [$MonitorFunction]");
			$setMF = false;
			if($LocationMode == "Home" && $MonitorFunction != "Monitor") {
					$MonitorFunction = "Monitor";
					$setMF = true;
			}
			elseif($LocationMode == "Away" && $MonitorFunction != "Modect") {
					$MonitorFunction = "Modect";
					$setMF = true;
			}
			if($setMF) {
				writelog("Setting monitor $id function to [$MonitorFunction]");
				curl_setopt($ch, CURLOPT_POST, true);
				curl_setopt($ch, CURLOPT_POSTFIELDS, "Monitor[Function]=$MonitorFunction&Monitor[Enabled]=1");
				curl_setopt($ch, CURLOPT_URL, "$ZM_Host/zm/api/monitors/$id.json?token=$API_key->access_token");
				$result = curl_exec($ch);
				writelog($result);
			}
		}

	}
	else writelog('Curl error: ' . curl_error($ch));

}

curl_close($ch);


function writelog($w) {
	$file = fopen("/var/log/zm-setMonitorFunction.log", 'a');
	fwrite($file, date("Y-m-d H:i:s") . " $w\n");
	fclose($file);
}


// testing purposes
function displayObject($a) {
	foreach($a as $k => $v) {
			echo "[$k] => ";
			if(is_array($v) || is_object($v)) {
				echo "\n";
				displayObject($v);
			}
			else echo "$v\n";
	}
}

?>