<?php
/**
 * Plugin Name: Web100 WooCommerce Preflight
 * Description: Read-only configuration diagnostics for an authorized WooCommerce store.
 * Version: 0.1.0
 * Requires PHP: 8.1
 * Requires Plugins: woocommerce
 * License: GPL-2.0-or-later
 * Author: Web100
 */
defined('ABSPATH') || exit;
final class Web100_Preflight {
  public static function report(): array {
    $checks = [];
    $add = function($id,$name,$status,$finding,$next) use (&$checks) {
      $checks[] = compact('id','name','status','finding','next');
    };
    $ready = class_exists('WooCommerce') && function_exists('WC');
    $add('woocommerce','WooCommerce active',$ready?'pass':'warn',$ready?'WooCommerce loaded':'WooCommerce missing','Activate the WooCommerce plugin.');
    if (!$ready) return self::finish($checks);
    $add('version','WooCommerce version','info',defined('WC_VERSION')?WC_VERSION:'unavailable','Check compatibility with installed extensions.');
    foreach (['cart'=>'Cart','checkout'=>'Checkout','myaccount'=>'My account'] as $key=>$title) {
      $id = (int)wc_get_page_id($key);
      $post = $id>0 ? get_post($id) : null;
      $published = $post instanceof WP_Post && $post->post_status==='publish';
      $add($key.'_page',$title.' page',$published?'pass':'warn',$published?"Published (#$id)":"No published page assigned","Confirm the WooCommerce advanced page setting.");
      if ($published && $key!=='myaccount') {
        $sc = $key==='cart'?'woocommerce_cart':'woocommerce_checkout';
        $ui = has_shortcode($post->post_content,$sc) || (function_exists('has_block') && has_block('woocommerce/'.$key,$post));
        $add($key.'_content',$title.' UI',$ui?'pass':'warn',$ui?'Standard WooCommerce block or shortcode found':'Standard block or shortcode not found','Manually check this page and exclusions from page caching.');
      }
    }
    $scheme = (string)wp_parse_url(home_url('/'),PHP_URL_SCHEME);
    $add('https','HTTPS home URL',$scheme==='https'?'pass':'warn',"Configured scheme: $scheme",'Secure and manually verify production storefront and checkout.');
    $gateways = [];
    foreach(WC()->payment_gateways()->payment_gateways() as $gateway) {
      if (isset($gateway->enabled) && $gateway->enabled==='yes') $gateways[]=(string)$gateway->id;
    }
    $add('gateway','Enabled payment methods',count($gateways)?'pass':'warn',
      count($gateways)?('Settings-level enabled: '.implode(', ',$gateways).'. Not a successful charge.'):'None enabled',
      'Check gateway availability and complete authorized sandbox payment tests.');
    $zones=class_exists('WC_Shipping_Zones')?WC_Shipping_Zones::get_zones():[];
    $methods=0;
    foreach($zones as $z) {
      if (!empty($z['zone_id'])) $methods += count((new WC_Shipping_Zone((int)$z['zone_id']))->get_shipping_methods(true));
    }
    if (class_exists('WC_Shipping_Zone')) $methods += count((new WC_Shipping_Zone(0))->get_shipping_methods(true));
    $add('shipping','Shipping methods',$methods?'pass':'warn',count($zones)." zones, $methods enabled methods, including default",'Test destination-specific rates and product restrictions on staging.');
    $currency=(string)get_woocommerce_currency();
    $add('currency','Store currency',$currency?'pass':'warn',$currency?:'Not configured','Confirm prices, currency and tax behavior with the business.');
    $published=(int)(wp_count_posts('product')->publish??0);
    $add('products','Published products',$published?'pass':'warn',"$published published; not a purchasability check",'Test simple/variable products, stock, cart and coupons.');
    $permalinks=(string)get_option('permalink_structure','');
    $add('permalinks','Permalinks',$permalinks?'pass':'warn',$permalinks?'Non-plain structure configured':'Plain permalinks configured','Review storefront URL and redirect requirements.');
    $cron=defined('DISABLE_WP_CRON') && DISABLE_WP_CRON;
    $add('cron','Scheduled tasks',$cron?'info':'pass',$cron?'Request-triggered WP Cron disabled':'Request-triggered WP Cron not disabled','Verify Action Scheduler job execution; this is not an outcome test.');
    return self::finish($checks);
  }
  private static function finish(array $checks):array {
    $counts=['pass'=>0,'warn'=>0,'info'=>0];
    foreach($checks as $c) $counts[$c['status']]++;
    return ['tool'=>'Web100 Preflight','version'=>'0.1.0','mode'=>'read_only',
      'limits'=>'Not a security audit, live payment check, or complete checkout test.',
      'counts'=>$counts,'checks'=>$checks];
  }
  public static function menu():void {
    add_submenu_page('woocommerce','Web100 Preflight','Web100 Preflight',
      'manage_woocommerce','web100-preflight',[self::class,'page']);
  }
  public static function page():void {
    if (!current_user_can('manage_woocommerce')) wp_die('Access denied');
    $r=self::report();
    echo '<div class="wrap"><h1>Web100 WooCommerce Preflight</h1><p>Read-only, no telemetry, customer data or live charge. Non-exhaustive.</p>';
    echo '<p>'.esc_html(wp_json_encode($r['counts'])).'</p><table class="widefat striped"><thead><tr><th>Check</th><th>Status</th><th>Finding</th><th>Next step</th></tr></thead><tbody>';
    foreach($r['checks'] as $c) echo '<tr><td>'.esc_html($c['name']).'</td><td>'.esc_html(strtoupper($c['status'])).'</td><td>'.esc_html($c['finding']).'</td><td>'.esc_html($c['next']).'</td></tr>';
    echo '</tbody></table></div>';
  }
  public static function cli($args,$assoc):void {
    if (($assoc['format']??'json')!=='json') WP_CLI::error('Only --format=json supported');
    WP_CLI::line(wp_json_encode(self::report(), JSON_PRETTY_PRINT|JSON_UNESCAPED_SLASHES));
  }
}
add_action('admin_menu',[Web100_Preflight::class,'menu']);
if(defined('WP_CLI') && WP_CLI && class_exists('WP_CLI')) {
  WP_CLI::add_command('web100 preflight',[Web100_Preflight::class,'cli']);
}