<?php
/**
 * WeedOps Theme Functions
 */

// Theme setup
function weedops_setup() {
    add_theme_support('title-tag');
    add_theme_support('post-thumbnails');
    add_theme_support('html5', array('search-form', 'comment-form', 'comment-list', 'gallery', 'caption'));
}
add_action('after_setup_theme', 'weedops_setup');

// Enqueue styles
function weedops_scripts() {
    wp_enqueue_style('weedops-style', get_stylesheet_uri(), array(), '1.0');
}
add_action('wp_enqueue_scripts', 'weedops_scripts');

// Remove WordPress junk from head
remove_action('wp_head', 'wp_generator');
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'rsd_link');
remove_action('wp_head', 'wp_shortlink_wp_head');
remove_action('wp_head', 'rest_output_link_wp_head');
remove_action('wp_head', 'wp_oembed_add_discovery_links');
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('wp_print_styles', 'print_emoji_styles');

// Remove WP block library CSS (not using Gutenberg blocks)
function weedops_remove_block_css() {
    wp_dequeue_style('wp-block-library');
    wp_dequeue_style('wp-block-library-theme');
    wp_dequeue_style('classic-theme-styles');
    wp_dequeue_style('global-styles');
}
add_action('wp_enqueue_scripts', 'weedops_remove_block_css', 100);

// Disable Gutenberg for pages
function weedops_disable_gutenberg($current_status, $post_type) {
    if ($post_type === 'page') return false;
    return $current_status;
}
add_filter('use_block_editor_for_post_type', 'weedops_disable_gutenberg', 10, 2);

// Cloudflare Turnstile (for deck request form)
define('WEEDOPS_TURNSTILE_SITE_KEY', '');
define('WEEDOPS_TURNSTILE_SECRET_KEY', '');

function weedops_turnstile_scripts() {
    if (WEEDOPS_TURNSTILE_SITE_KEY) {
        wp_enqueue_script('turnstile', 'https://challenges.cloudflare.com/turnstile/v0/api.js', array(), null, true);
    }
}
add_action('wp_enqueue_scripts', 'weedops_turnstile_scripts');

function weedops_verify_turnstile($token) {
    if (!WEEDOPS_TURNSTILE_SECRET_KEY || empty($token)) return !WEEDOPS_TURNSTILE_SECRET_KEY;

    $response = wp_remote_post('https://challenges.cloudflare.com/turnstile/v0/siteverify', array(
        'body' => array(
            'secret' => WEEDOPS_TURNSTILE_SECRET_KEY,
            'response' => $token,
            'remoteip' => $_SERVER['REMOTE_ADDR'] ?? '',
        ),
    ));

    if (is_wp_error($response)) return false;

    $body = json_decode(wp_remote_retrieve_body($response), true);
    return !empty($body['success']);
}

// Handle deck request form submission (early, before headers sent)
function weedops_handle_deck_request_init() {
    if (!isset($_POST['weedops_deck_request'])) return;

    // Verify nonce
    if (!wp_verify_nonce($_POST['_wpnonce'] ?? '', 'weedops_deck_request')) {
        set_transient('weedops_form_error_' . $_SERVER['REMOTE_ADDR'], 'Invalid request.', 60);
        wp_redirect(home_url('/#deck'));
        exit;
    }

    // Verify Turnstile if configured
    if (WEEDOPS_TURNSTILE_SITE_KEY && !weedops_verify_turnstile($_POST['cf-turnstile-response'] ?? '')) {
        set_transient('weedops_form_error_' . $_SERVER['REMOTE_ADDR'], 'Verification failed. Please try again.', 60);
        wp_redirect(home_url('/#deck'));
        exit;
    }

    $name = sanitize_text_field($_POST['name'] ?? '');
    $email = sanitize_email($_POST['email'] ?? '');
    $note = sanitize_textarea_field($_POST['note'] ?? '');

    if (empty($name) || empty($email)) {
        set_transient('weedops_form_error_' . $_SERVER['REMOTE_ADDR'], 'Name and email are required.', 60);
        wp_redirect(home_url('/#deck'));
        exit;
    }

    // Send notification email
    $to = 'john@weedops.site';
    $subject = 'WeedOps Deck Request: ' . $name;
    $body = "Name: {$name}\nEmail: {$email}\n\nNote:\n{$note}";
    $headers = array('Reply-To: ' . $name . ' <' . $email . '>');

    wp_mail($to, $subject, $body, $headers);

    set_transient('weedops_form_success_' . $_SERVER['REMOTE_ADDR'], true, 60);
    wp_redirect(home_url('/#deck'));
    exit;
}
add_action('template_redirect', 'weedops_handle_deck_request_init');

// Get form result from transient (after redirect)
function weedops_get_form_result() {
    $ip = $_SERVER['REMOTE_ADDR'];
    $success = get_transient('weedops_form_success_' . $ip);
    if ($success) {
        delete_transient('weedops_form_success_' . $ip);
        return true;
    }
    $error = get_transient('weedops_form_error_' . $ip);
    if ($error) {
        delete_transient('weedops_form_error_' . $ip);
        return $error;
    }
    return null;
}