<?php
header('Content-Type: application/json; charset=utf-8');

// Vain POST sallittu
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['success' => false, 'message' => 'Method not allowed']);
    exit;
}

// Lomakkeen tiedot
$name = trim($_POST['name'] ?? '');
$email = trim($_POST['email'] ?? '');
$package = trim($_POST['package'] ?? '');
$message = trim($_POST['message'] ?? '');

// Validointi
if (empty($name) || empty($email) || empty($message)) {
    http_response_code(400);
    echo json_encode(['success' => false, 'message' => 'Täytä kaikki pakolliset kentät.']);
    exit;
}

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    http_response_code(400);
    echo json_encode(['success' => false, 'message' => 'Virheellinen sähköpostiosoite.']);
    exit;
}

// Suojaa header injectionilta
$name = str_replace(["\r", "\n"], '', $name);
$email = str_replace(["\r", "\n"], '', $email);

// Sähköpostin vastaanottaja
$to = 'box@storagebox.fi';

// Aihe
$subject = 'StorageBox.fi - Yhteydenotto: ' . $name;

// Viestin sisältö
$body = "Uusi yhteydenotto StorageBox.fi:n kautta\n";
$body .= "========================================\n\n";
$body .= "Nimi: {$name}\n";
$body .= "Sähköposti: {$email}\n";
if (!empty($package)) {
    $packages = [
        'mini' => 'Mini — 100 GB — 29€/v',
        'perus' => 'Perus — 200 GB — 69€/v',
        'plus' => 'Plus — 500 GB — 119€/v',
        'pro' => 'Pro — 1 TB — 199€/v',
        'business' => 'Business — 2 TB — 299€/v',
    ];
    $packageName = $packages[$package] ?? $package;
    $body .= "Paketti: {$packageName}\n";
}
$body .= "\nViesti:\n{$message}\n";

// Headerit
$headers = "From: StorageBox.fi <box@storagebox.fi>\r\n";
$headers .= "Reply-To: {$name} <{$email}>\r\n";
$headers .= "Content-Type: text/plain; charset=UTF-8\r\n";
$headers .= "X-Mailer: StorageBox.fi Contact Form\r\n";

// Lähetä
if (mail($to, '=?UTF-8?B?' . base64_encode($subject) . '?=', $body, $headers)) {
    echo json_encode(['success' => true, 'message' => 'Viesti lähetetty! Palaamme asiaan pian.']);
} else {
    http_response_code(500);
    echo json_encode(['success' => false, 'message' => 'Viestin lähetys epäonnistui. Ota yhteyttä suoraan: box@storagebox.fi']);
}