<?php
ini_set("display_errors", false);
$perspectiveMiddlewareVersion = 1.0;

function parseHeaders( $headers )
{
    $head = array();
    foreach( $headers as $k=>$v )
    {
        $t = explode( ':', $v, 2 );
        if( isset( $t[1] ) )
            $head[ trim($t[0]) ] = trim( $t[1] );
        else
        {
            $head[] = $v;
            if( preg_match( "#HTTP/[0-9\.]+\s+([0-9]+)#",$v, $out ) )
                $head['response_code'] = intval($out[1]);
        }
    }
    return $head;
}

if(!isSet($_POST['key']))
    exit("ERROR: NO KEY");
$key = $_POST['key'];

if(!isSet($_POST['text']))
    exit("ERROR: NO TEXT");
$text = $_POST['text'];

$query = '{comment: {text:"' . $text . '"}, languages: ["en"], requestedAttributes: {TOXICITY:{},SEVERE_TOXICITY:{},IDENTITY_ATTACK:{},INSULT:{},PROFANITY:{},THREAT:{},SEXUALLY_EXPLICIT:{},FLIRTATION:{}}}';
$options = array('http' => array('method' => "POST", 'header' => "\r\nContent-type: application/json\r\nContent-Length: " . strlen($query) . "\r\n", 'content' => $query, 'ignore_errors' => true));
$context = stream_context_create($options);
$result = file_get_contents("https://commentanalyzer.googleapis.com/v1alpha1/comments:analyze?key=$key", false, $context);

if($result === false)
{
    exit("ERROR: NETWORK FAILIURE");
}

$resultHeaders = parseHeaders($http_response_header);

if($resultHeaders['response_code'] >= 400)
{
    if(isSet($result -> error -> message))
        exit("ERROR: API ERROR: " . $result -> error -> message);

    exit("ERROR: API RETURNED CODE " . $resultHeaders['response_code']);
}

// Remove the spanscores in order to make the json parsing slightly faster on the torquescript side
$result = json_decode($result);
unset($result -> attributeScores -> TOXICITY -> spanScores);
unset($result -> attributeScores -> SEVERE_TOXICITY -> spanScores);
unset($result -> attributeScores -> IDENTITY_ATTACK -> spanScores);
unset($result -> attributeScores -> INSULT -> spanScores);
unset($result -> attributeScores -> PROFANITY -> spanScores);
unset($result -> attributeScores -> THREAT -> spanScores);
unset($result -> attributeScores -> SEXUALLY_EXPLICIT -> spanScores);
unset($result -> attributeScores -> FLIRTATION -> spanScores);

$result -> middlewareVersion = $perspectiveMiddlewareVersion;
$result = json_encode($result, JSON_PRETTY_PRINT);

print($result);
?>