<?php
/**
 * File: ContactController.php
 * Version: 2.8
 * Path: /app/Controllers/ContactController.php
 * Purpose: Handles contact form submission and verification, including expiration enforcement.
 * Project: Wizdom Networks Website
 */

namespace WizdomNetworks\WizeWeb\Controllers;

use WizdomNetworks\WizeWeb\Core\View;
use WizdomNetworks\WizeWeb\Utilities\Logger;
use WizdomNetworks\WizeWeb\Utilities\Validator;
use WizdomNetworks\WizeWeb\Utilities\Sanitizer;
use WizdomNetworks\WizeWeb\Utilities\Database;
use WizdomNetworks\WizeWeb\Utilities\EmailHelper;
use WizdomNetworks\WizeWeb\Utilities\SessionHelper;
use WizdomNetworks\WizeWeb\Utilities\SubmissionCheck;
use WizdomNetworks\WizeWeb\Models\ContactModel;
use WizdomNetworks\WizeWeb\Services\ContactService;
use Exception;

class ContactController
{
    public function index(): void
    {
        View::render('pages/landing');
    }

    public function submit(): void
    {
        Logger::info("Executing controller: ContactController::submit");

        try {
            $formData = [
                'first_name'   => Sanitizer::sanitizeString($_POST['first_name'] ?? ''),
                'last_name'    => Sanitizer::sanitizeString($_POST['last_name'] ?? ''),
                'email'        => Sanitizer::sanitizeString($_POST['email'] ?? ''),
                'phone'        => Sanitizer::sanitizeString($_POST['phone'] ?? ''),
                'subject'      => Sanitizer::sanitizeString($_POST['subject'] ?? ''),
                'message'      => Sanitizer::sanitizeString($_POST['message'] ?? ''),
                'ip_address'   => $_SERVER['REMOTE_ADDR'] ?? 'unknown',
                'user_agent'   => $_SERVER['HTTP_USER_AGENT'] ?? 'unknown',
            ];

            foreach ($formData as $key => $value) {
                Logger::info("Sanitized input: {$key} = {$value}");
            }

            if (
                empty($formData['first_name']) ||
                empty($formData['last_name']) ||
                empty($formData['email']) ||
                empty($formData['phone']) ||
                empty($formData['subject']) ||
                empty($formData['message']) ||
                !Validator::isEmail($formData['email'])
            ) {
                Logger::info("Validation failed for contact form submission");
                $_SESSION['contact_error'] = 'An internal error occurred. Please try again later.';
                SessionHelper::writeClose();
                header("Location: /#contact");
                exit;
            }

            $db = Database::getConnection();

            $evaluation = SubmissionCheck::evaluate($db, $formData['email'], $formData['phone'], $formData['ip_address']);
            Logger::info("Submission evaluation result: " . json_encode($evaluation));

            if ($evaluation['action'] === 'block') {
                $_SESSION['contact_error'] = "Submission blocked due to suspicious activity. If this is a mistake, please contact us directly.";
                Logger::warning("Blocked submission from IP: {$formData['ip_address']}, Reason: {$evaluation['reason']}");
                EmailHelper::alertAdmins('Blocked Submission Detected', "A submission was blocked for the following reason: {$evaluation['reason']}", $formData);
                SessionHelper::writeClose();
                header("Location: /#contact");
                exit;
            }

            $logId = null;
            try {
                $logStmt = $db->prepare("INSERT INTO submission_logs (email, phone, ip_address, user_agent, was_saved, reason) VALUES (:email, :phone, :ip, :ua, :saved, :reason)");
                $logStmt->execute([
                    ':email'  => $formData['email'],
                    ':phone'  => $formData['phone'],
                    ':ip'     => $formData['ip_address'],
                    ':ua'     => $formData['user_agent'],
                    ':saved'  => 0,
                    ':reason' => $evaluation['reason'],
                ]);
                $logId = $db->lastInsertId();
            } catch (\Throwable $e) {
                Logger::error("Failed to insert into submission_logs: " . $e->getMessage());
            }

            $contactModel = new ContactModel($db);
            $saveSuccess = $contactModel->saveContactForm($formData);

            $contactId = $db->lastInsertId();
            $verificationCode = bin2hex(random_bytes(16));
            $expiresAt = (new \DateTime('+72 hours'))->format('Y-m-d H:i:s');

            if ($saveSuccess) {
                $stmt = $db->prepare("UPDATE contact_messages SET verification_code = ?, is_verified = 0, verification_expires_at = ? WHERE id = ?");
                $stmt->execute([$verificationCode, $expiresAt, $contactId]);
                ContactService::sendVerificationEmail($formData['email'], $verificationCode);
            }

            if ($saveSuccess && $logId) {
                $update = $db->prepare("UPDATE submission_logs SET was_saved = 1 WHERE id = :id");
                $update->execute([':id' => $logId]);
            }

            // Newsletter opt-in logic
            if (!empty($_POST['subscribe_newsletter'])) {
                Logger::info("Contact opted into newsletter: {$formData['email']}");
                NewsletterService::subscribeOrResend($formData['email']);
            }

            Logger::info("✅ Writing session flag: contact_success = true");
            Logger::info("✅ Session content before redirect: " . json_encode($_SESSION));

            SessionHelper::writeClose();
            View::render('pages/contact_check_email');
            return;

        } catch (\Throwable $e) {
            Logger::error("Fatal error in ContactController::submit: " . $e->getMessage());
            EmailHelper::alertAdmins('ContactController::submit - Uncaught Exception', $e->getMessage(), $_POST ?? []);
            $_SESSION['contact_error'] = 'An internal error occurred. Please try again later.';
            SessionHelper::writeClose();
            Logger::info("✅ Writing session flag: catch contact_error = " . $_SESSION['contact_error']);
            Logger::info("✅ Session content before redirect: " . json_encode($_SESSION));
            header("Location: /#contact");
            exit;
        }
    }
}