<?php
header('Content-Type: application/json');

require_once __DIR__ . '/db/config.php';
require_once __DIR__ . '/mail/MailService.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    echo json_encode(['success' => false, 'message' => 'Invalid request method.']);
    exit;
}

$name = trim($_POST['name'] ?? '');
$email = trim($_POST['email'] ?? '');
$message = trim($_POST['message'] ?? '');

if (empty($name) || empty($email) || empty($message)) {
    echo json_encode(['success' => false, 'message' => 'Please fill out all fields.']);
    exit;
}

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo json_encode(['success' => false, 'message' => 'Please provide a valid email address.']);
    exit;
}

try {
    $pdo = db();

    // Create table if it doesn't exist (idempotent)
    $pdo->exec("CREATE TABLE IF NOT EXISTS contact_submissions (
        id INT AUTO_INCREMENT PRIMARY KEY,
        name VARCHAR(255) NOT NULL,
        email VARCHAR(255) NOT NULL,
        message TEXT NOT NULL,
        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
    )");

    // Insert submission
    $stmt = $pdo->prepare("INSERT INTO contact_submissions (name, email, message) VALUES (?, ?, ?)");
    $stmt->execute([$name, $email, $message]);

    // Send email notification
    // The recipient is determined by the MAIL_TO env var by default.
    $mailResult = MailService::sendContactMessage($name, $email, $message);

    if ($mailResult['success']) {
        echo json_encode(['success' => true, 'message' => 'Thank you! Your message has been sent.']);
    } else {
        // Still a success for the user, but log the mail error.
        error_log("Contact form saved to DB, but mail sending failed: " . ($mailResult['error'] ?? 'Unknown error'));
        echo json_encode(['success' => true, 'message' => 'Thank you! Your message has been received.']);
    }

} catch (PDOException $e) {
    error_log("Database error: " . $e->getMessage());
    echo json_encode(['success' => false, 'message' => 'A server error occurred while saving your message.']);
} catch (Exception $e) {
    error_log("General error: " . $e->getMessage());
    echo json_encode(['success' => false, 'message' => 'A server error occurred.']);
}