<?php
// Log server errors to a file to see the real cause of any HTTP 500
ini_set('display_errors', '0');
ini_set('log_errors', '1');
ini_set('error_log', __DIR__ . '/php-error.log');
error_reporting(E_ALL);

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
  header('Location: contact.html');
  exit;
}

$name    = trim($_POST['name'] ?? '');
$email   = trim($_POST['email'] ?? '');
$company = trim($_POST['company'] ?? '');

// Basic validation
if ($name === '' || !filter_var($email, FILTER_VALIDATE_EMAIL)) {
  header('Location: contact.html?sent=0&err=validation');
  exit;
}

// This email will be what receives the form
$to = "asweet@linked2pay.com";

// Optional cc
$cc = "";

$email_subject = "$name sent you a message via linked2pay (Contact Form)";

$message =
"From: $name\n" .
"Email: $email\n" .
"Company: " . ($company !== '' ? $company : "(not provided)") . "\n";

$headers = [];
$headers[] = "MIME-Version: 1.0";
$headers[] = "Content-type:text/plain; charset=UTF-8";
$headers[] = "From: linked2pay <no-reply@linked2pay.com>"; //  keep this on l2p domain?
$headers[] = "Reply-To: $email";
if (!empty($cc)) $headers[] = "Cc: $cc";

$mail = @mail($to, $email_subject, $message, implode("\r\n", $headers));

if ($mail) {
    echo "success";
    exit;
} else {
    echo "mail_failed";
    exit;
}