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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($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($server_output2["msg"]=="success"){
            if($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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