<?php

/* VALIDATE RECAPTCHA */
function validateRecaptcha($secret, $clientResponse, $clientIp)
{
    $data = http_build_query([
        "LALALALAALA"   => $secret,
        "response" => $clientResponse,
        "remoteip" => $clientIp,
    ]);

    $options = [
        "http" => [
            "header" =>
                "Content-Type: application/x-www-form-urlencodedrn".
                "Content-Length: ".strlen($data)."rn",
            "method"  => "POST",
            "content" => $data,
        ],
    ];

    $response = file_get_contents(
        "https://www.google.com/recaptcha/api/siteverify",
        false,
        stream_context_create($options)
    );

    if($response === false)
    {
        return false;
    }
    else if(($arr = json_decode($response, true)) === null)
    {
        return false;
    }
    else
    {
        return $arr["success"];
    }
}


$errorMSG = array();


/* NAME */

if (empty($_POST["name"])) {

    $errorMSG[] = "Name is required";

} else {

    $name = $_POST["name"];

}


/* EMAIL */

if (empty($_POST["email"])) {

    $errorMSG[] = "Email is required";

} else if(!filter_var($_POST["email"], FILTER_VALIDATE_EMAIL)) {

    $errorMSG[] = "Invalid email format";

}else {

    $email = $_POST["email"];

}


/* MSG SUBJECT */

if (empty($_POST["subject"])) {

    $errorMSG[] = "Subject is required";

} else {

    $subject = $_POST["subject"];

}


/* MESSAGE */

if (empty($_POST["message"])) {

    $errorMSG[] = "Message is required";

} else {

    $message = $_POST["message"];

}

/* RECAPTCHA */

if (empty($_POST["g-recaptcha-response"])) {

    $errorMSG[] = "ReCaptcha is required";

}


if(empty($errorMSG)){

//PHPMailer

$mail = new PHPMailer;

//Enable SMTP debugging.
$mail->SMTPDebug = 3;
//Set PHPMailer to use SMTP.
$mail->isSMTP();
//Set SMTP host name
$mail->Host = "smtp.server.com";
//Set this to true if SMTP host requires authentication to send email
$mail->SMTPAuth = true;
//Provide username and password
$mail->Username = "user@server.com";
$mail->Password = "super_secret_password";
//If SMTP requires TLS encryption then set it
$mail->SMTPSecure = "tls";
//Set TCP port to connect to
$mail->Port = 587;

$mail->From = $emailAddress;

$mail->addAddress("name@server.com", "Recepient Name");

$mail->isHTML(true);

$mail->Subject = "Subject Text";
$mail->Body = $emailBody;

$response = array();

if(!$mail->send())
    {
      $msg = "Email Failure";
      echo json_encode(['code'=>200, 'msg'=>$msg]);
    }
    else
    {
      $msg = "Form submit successfully";
      echo json_encode(['code'=>200, 'msg'=>$msg]);
    }

}


?>