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<?php

	// Code written in a night by Roeland Kindt for SEMS portal retrieval
	// PVoutput portion copied from older Goodwe2PVoutput script, thanks Antonboonstra!

	// Below portion is for PVOUTput site
	// Retrieve API key from PVOutput, you can create it on http://pvoutput.org/account.jsp under API settings
	$keyPVO = "";
	// Fill in your System ID, you can retrieve it from http://pvoutput.org/account.jsp (at the bottom)
	$sidPVO = "";

	// // SEMS portal portion
	// You can retriev powerstation id from URL if you visit website, or run the script once, it will provide the ID to you.
	$powerstation_id=""; // not mandatory first run

	// Login SEMS portal website
	$email="";
	// Password SEMS portal website.
	$password="";

	//enable+/disable debug/test mode
	$test=true; // if true shows pvoutput url but does not submit it, set to false if working.
	$debug=false; // prints var_dump of vars, set to true to var_dump


	// below code does not need modifications.

	$vars = "{\"account\":\"$email\",\"pwd\":\"$password\"}";

	//logic retrieved from original script by antonboostra
	echo "<pre>\n";
	// determine if it is night or day, to prevent retrieval of data (reduce API calls)
	$day = date_sunrise(time(), SUNFUNCS_RET_TIMESTAMP, 52, 5.5);
	$night = date_sunset(time(), SUNFUNCS_RET_TIMESTAMP, 52, 5.5);
	$now = time();
	if($now < ($day-600) || $now > ($night+600)) // 600 seconds (=10 minutes) margin
	{
	  echo "It is before dusk (".date("H:i",$day)." hour) or after sunset (".date("H:i",$night)." hour) \n";
	  if(!$test) exit(); // exit so we don't run the rest of the code
	}

	//basic setup for logging into SEMS portal
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL,"https://globalapi.sems.com.cn/api/v1/Common/CrossLogin");
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS,$vars);  //Post Fields
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

	$headers = [
		'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
		'Accept-Encoding: gzip, deflate',
		'Accept: */*',
		'Connect: Keep-alive',
		'Content-Type: application/json',
		'Host: globalapi.sems.com.cn',
		'Token: {"version":"v2.1.0","client":"ios","language":"en"}',
		'User-Agent:  PVMaster/2.1.0 (iPhone; iOS 12.0; Scale/2.00)',
	];

	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

	$server_output = curl_exec ($ch);
    if($server_output==false){
		echo curl_error($ch);
        exit();
	}

	//retrieved basic login details
	$server_output = json_decode($server_output, true);
		if($debug) echo var_dump($server_output);

		$uid="";
		$timestamp="";
		$token="";
		$retrieval=false;

	if(strtoupper(trim($server_output["msg"]))=="SUCCESS"){
		echo "<br/>retrieval ok <br/>";
		$uid=$server_output["data"]["uid"];
		$timestamp=$server_output["data"]["timestamp"];
		$token=$server_output["data"]["token"];
		$retrieval=true;
	}else{
		echo "<br/>Basic SEMS portal login failed. Enable debug mode <br/>";
		curl_close ($ch);
		exit();
	}


	if($retrieval && trim($powerstation_id)==""){
		$vars="{\"page_size\":\"5\",\"orderby\":\"\",\"powerstation_status\":\"\",\"key\":\"\",\"page_index\":\"1\",\"powerstation_id\":\"\",\"powerstation_type\":\"\"}";
		$headers = [
		'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
		'Accept-Encoding: gzip, deflate',
		'Accept: */*',
		'Connect: Keep-alive',
		'Content-Type: application/json',
		'Host: globalapi.sems.com.cn',
		'Token: {"version":"v2.1.0","client":"ios","language":"en","timestamp":'.$timestamp.',"uid":"'.$uid.'","token":"'.$token.'"}',
		'User-Agent:  PVMaster/2.1.0 (iPhone; iOS 12.0; Scale/2.00)',
		];
		curl_setopt($ch, CURLOPT_URL,"https://euapi.sems.com.cn/api/PowerStationMonitor/QueryPowerStationMonitorForApp");
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS,$vars);  //Post Fields
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

		$server_output2 = curl_exec ($ch);
		$server_output2 = json_decode($server_output2, true);
		if(strtoupper(trim($server_output2["msg"]))=="SUCCESS"){
			if($debug) var_dump($server_output2);
			echo "<br/>retrieval powerstation ok <br/>";
			$powerstation_id=$server_output2["data"][0]["powerstation_id"];
			echo "retrieved ".$powerstation_id."<br/>";
		}
	}else{
		echo "Powerstation id is provided: ".$powerstation_id."<br/>";
	}

$retrieval3=false;
if($retrieval&& !trim($powerstation_id)==""){
	echo "retrieval 3 ok <br/>";

	$vars="{\"powerStationId\":\"$powerstation_id\"}";
	$headers = [
    'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Encoding: gzip, deflate',
    'Accept: */*',
    'Connect: Keep-alive',
    'Content-Type: application/json',
    'Host: globalapi.sems.com.cn',
	'Token: {"version":"v2.1.0","client":"ios","language":"en","timestamp":'.$timestamp.',"uid":"'.$uid.'","token":"'.$token.'"}',
    'User-Agent:  PVMaster/2.1.0 (iPhone; iOS 12.0; Scale/2.00)',
	];
	curl_setopt($ch, CURLOPT_URL,"https://euapi.sems.com.cn/api/v1/PowerStation/GetMonitorDetailByPowerstationId");
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS,$vars);  //Post Fields
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

	$server_output3 = curl_exec ($ch);
	$server_output3 = json_decode($server_output3, true);

	if($debug) var_dump($server_output3);

	$retrieval3=true;
	$pac=$server_output3["data"]["kpi"]["pac"];
	$powerpki=$server_output3["data"]["kpi"]["power"];
	$temp=$server_output3["data"]["inverter"][0]["tempperature"];
	$vpv1=$server_output3["data"]["inverter"][0]["d"]["vpv1"];
	$vpv2=$server_output3["data"]["inverter"][0]["d"]["vpv2"];

	$power = intval($pac);
	$energy_cum = round(floatval($powerpki)*1000);
	$vdc = round(floatval($vpv1),1); // v6 = Voltage DC van MPP1
	$temperature = round(floatval($temp),1);
	echo "<h1>Energy = $energy_cum Wh - Power = $power W - DC voltage 1 = $vdc, DC voltage 2 = $vpv2 - Temperature = $temperature degr.C\n </h1>";

}else{
	echo "<br/>Advanced SEMS portal data retrieval failed. Enable debug mode <br/>";
	curl_close ($ch);
	exit();
}

curl_close ($ch);


if($retrieval && $retrieval3){

	// Combine the RUL to call PVoutpout and submit data Stel
	$url = 'http://pvoutput.org/service/r2/addstatus.jsp?key='.$keyPVO.'&sid='.$sidPVO.'&d='.date("Ymd").'&t='.date("H:i").'&v1='.$energy_cum.'&v2='.$power.'&v5='.$temperature.'&v6='.$vdc.'&c1=0';
	// if $test is true, only show url otherwise submit
	if($test){
		echo "URL = $url \n";
	}else{
		$responds = file_get_contents($url);
		echo "Responds PVOutput was: $responds \n";
		if($responds == "OK 200: Added Status")
		{
		  echo "The values were succesfully retrieved and submitted to PVOutput \n";
		}
		else
		{
		  echo "Issue submitting to PVOutput, let's try again...<br>\n";
		  sleep(4); // wacht 4 seconden
		  $responds = file_get_contents($url);
		  if($responds == "OK 200: Added Status")
		  {
			echo "The values were succesfully retrieved and submitted to PVOutput \n";
		  }
		  else
		  {
			echo "PVOutput submit failed for a second time, please verify if settings are correct.\n";
			echo "Responds PVOutput was: $responds \n";
		  }
		}
	  }
}


echo '</pre>';
?>

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