add_action('wp_ajax_process_custom_registration', 'handle_custom_form_registration');
add_action('wp_ajax_nopriv_process_custom_registration', 'handle_custom_form_registration');

function handle_custom_form_registration() {
    global $wpdb;

    // Define the custom table name
    $table_name = $wpdb->prefix . 'custom_registrations';

    // 1. Sanitize and capture POST data
    $first_name = isset($_POST['first_name']) ? sanitize_text_field($_POST['first_name']) : '';
    $last_name  = isset($_POST['last_name']) ? sanitize_text_field($_POST['last_name']) : '';
    $email      = isset($_POST['email']) ? sanitize_email($_POST['email']) : '';
    $phone      = isset($_POST['phone']) ? sanitize_text_field($_POST['phone']) : '';
    $zip        = isset($_POST['zip']) ? sanitize_text_field($_POST['zip']) : '';

    // Basic required fields validation
    if (empty($first_name) || empty($email)) {
        wp_send_json_error('<strong>Error:</strong> Name and Email are required.');
        wp_die();
    }

    // 2. Check if the email already exists in the database
    $email_exists = $wpdb->get_var(
        $wpdb->prepare(
            "SELECT COUNT(*) FROM $table_name WHERE email = %s",
            $email
        )
    );

    if ($email_exists > 0) {
        // Send the error back to AJAX so the frontend can highlight the duplicate email
        wp_send_json_error('<strong>Attention:</strong> This email is already registered in our system. Please use a different email.');
        wp_die();
    }

    // 3. Insert data into the database table
    $inserted = $wpdb->insert(
        $table_name,
        array(
            'first_name' => $first_name,
            'last_name'  => $last_name,
            'email'      => $email,
            'phone'      => $phone,
            'zip'        => $zip
        ),
        array('%s', '%s', '%s', '%s', '%s')
    );

    // Stop execution if the database insertion failed
    if (!$inserted) {
        wp_send_json_error('<strong>Error:</strong> There was a problem saving your data. Please try again later.');
        wp_die();
    }

    // 4. Path to your HTML templates
    $theme_dir = get_stylesheet_directory();
    $admin_template_path = $theme_dir . '/emails/email_admin_template.html';
    $user_template_path  = $theme_dir . '/emails/email_user_template.html';

    if (!file_exists($admin_template_path) || !file_exists($user_template_path)) {
        wp_send_json_error('Data saved, but email templates are missing on the server.');
        wp_die();
    }

    // 5. Read the content of the HTML templates
    $admin_content = file_get_contents($admin_template_path);
    $user_content  = file_get_contents($user_template_path);

    // 6. Replace template variables with user data
    $user_content = str_replace('{{first_name}}', $first_name, $user_content);
    $user_content = str_replace('{{last_name}}', $last_name, $user_content);
    
    $admin_content = str_replace('{{first_name}}', $first_name, $admin_content);
    $admin_content = str_replace('{{email}}', $email, $admin_content);
    $admin_content = str_replace('{{phone}}', $phone, $admin_content);
    $admin_content = str_replace('{{zip}}', $zip, $admin_content);

    // 7. Configure Headers for HTML format and set the Sender (From)
    $headers = array(
        'Content-Type: text/html; charset=UTF-8',
        'From: Florida\'s Voice PAC <no-reply@floridasvoicepac.click>'
    );

    // 8. Send the emails using wp_mail
    $admin_email = get_option('admin_email'); // Fetches the admin email from WP settings
    $admin_subject = 'New Submission: Shevrin Jones for Congress';
    $user_subject = 'Thank you for your registration!';

    $mail_admin = wp_mail($admin_email, $admin_subject, $admin_content, $headers);
    $mail_user  = wp_mail($email, $user_subject, $user_content, $headers);

    // 9. Return response to Javascript
    if ($mail_admin && $mail_user) {
        wp_send_json_success('Registration processed successfully.');
    } else {
        wp_send_json_error('Data saved to database, but there was an issue sending the confirmation emails.');
    }
    
    wp_die(); // Always terminate WordPress AJAX functions with wp_die()
}

add_action('wp_ajax_process_custom_unregistration', 'handle_custom_form_unregistration');
add_action('wp_ajax_nopriv_process_custom_unregistration', 'handle_custom_form_unregistration');

function handle_custom_form_unregistration() {
    global $wpdb;

    // Define the custom table name
    $table_name = $wpdb->prefix . 'custom_registrations';

    // 1. Sanitize and capture the email sent via POST
    $email = isset($_POST['email']) ? sanitize_email($_POST['email']) : '';

    if (empty($email) || !is_email($email)) {
        wp_send_json_error('<strong>Error:</strong> A valid email address is required.');
        wp_die();
    }

    // 2. Paths to your HTML templates (Checked FIRST before deleting anything)
    $theme_dir = get_stylesheet_directory();
    $user_template_path  = $theme_dir . '/emails/email_user_template_unsubscriber.html';
    $admin_template_path = $theme_dir . '/emails/email_admin_template_unsubscriber.html';

    if (!file_exists($user_template_path) || !file_exists($admin_template_path)) {
        wp_send_json_error('<strong>Error:</strong> One or more email templates are missing on the server.');
        wp_die();
    }

    // 3. Check if the email exists in the database
    $existing_user = $wpdb->get_row(
        $wpdb->prepare(
            "SELECT * FROM $table_name WHERE email = %s",
            $email
        )
    );

    if (!$existing_user) {
        wp_send_json_error('<strong>Attention:</strong> This email address was not found in our subscriber database.');
        wp_die();
    }

    // 4. Read template contents and replace variables while user data is still available
    $user_content  = file_get_contents($user_template_path);
    $user_content  = str_replace('{{first_name}}', $existing_user->first_name, $user_content);
    $user_content  = str_replace('{{email}}', $email, $user_content);

    $admin_content = file_get_contents($admin_template_path);
    $admin_content = str_replace('{{first_name}}', $existing_user->first_name, $admin_content);
    $admin_content = str_replace('{{last_name}}', isset($existing_user->last_name) ? $existing_user->last_name : '', $admin_content);
    $admin_content = str_replace('{{email}}', $email, $admin_content);
    $admin_content = str_replace('{{phone}}', isset($existing_user->phone) ? $existing_user->phone : '', $admin_content);
    $admin_content = str_replace('{{zip}}', isset($existing_user->zip) ? $existing_user->zip : '', $admin_content);

    // 5. Delete the record from the database table only after templates are verified
    $deleted = $wpdb->delete(
        $table_name,
        array('email' => $email),
        array('%s')
    );

    if (!$deleted) {
        wp_send_json_error('<strong>Error:</strong> There was a problem processing your request. Please try again later.');
        wp_die();
    }

    // 6. Configure Headers for HTML format and set the Sender (From)
    $headers = array(
        'Content-Type: text/html; charset=UTF-8',
        'From: Florida\'s Voice PAC <no-reply@floridasvoicepac.click>'
    );

    // 7. Send confirmation email to user and notification email to admin
    $user_subject  = 'Unsubscription Confirmation';
    $admin_subject = 'New Unsubscription: Shevrin Jones for Congress';
    $admin_email   = get_option('admin_email');

    $mail_user  = wp_mail($email, $user_subject, $user_content, $headers);
    $mail_admin = wp_mail($admin_email, $admin_subject, $admin_content, $headers);

    // 8. Return response to Javascript
    if ($mail_user) {
        wp_send_json_success('You have been successfully unsubscribed.');
    } else {
        wp_send_json_error('Your data was removed, but there was an issue sending the confirmation email.');
    }
    
    wp_die();
}<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://floridasvoicepac.click/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://floridasvoicepac.click/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://floridasvoicepac.click/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://floridasvoicepac.click/wp-sitemap-posts-pagelayer-template-1.xml</loc></sitemap><sitemap><loc>https://floridasvoicepac.click/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://floridasvoicepac.click/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>