<?php
/**
 * Click Tracking Endpoint with SHORTINIT bypass
 *
 * This endpoint logs clicks and redirects to the destination.
 * Use this directly via plugin URL for fastest tracking.
 *
 * @package ROI_APU_Search
 */

declare(strict_types=1);

// BYPASS: Don't load full WordPress
define('SHORTINIT', true);
define('WP_USE_THEMES', false);

// Find wp-load.php (go up from plugin directory)
$wp_load = dirname(__FILE__, 5) . '/wp-load.php';

if (!file_exists($wp_load)) {
    // Fallback: try alternative paths
    $wp_load = dirname(__FILE__, 6) . '/wp-load.php';
    if (!file_exists($wp_load)) {
        // Can't log, just redirect
        $postId = isset($_GET['pid']) ? (int) $_GET['pid'] : 0;
        $dest = isset($_GET['dest']) ? $_GET['dest'] : '/?p=' . $postId;
        header('Location: ' . $dest, true, 302);
        exit;
    }
}

require_once $wp_load;

// Get request parameters
$searchId = isset($_GET['sid']) ? (int) $_GET['sid'] : 0;
$postId = isset($_GET['pid']) ? (int) $_GET['pid'] : 0;
$position = isset($_GET['pos']) ? (int) $_GET['pos'] : 0;
$page = isset($_GET['page']) ? (int) $_GET['page'] : 1;
$dest = isset($_GET['dest']) ? $_GET['dest'] : '';

// Load plugin classes first (needed for DB access)
$plugin_dir = dirname(__FILE__, 2);
require_once $plugin_dir . '/includes/class-db-connection.php';
require_once $plugin_dir . '/includes/class-analytics.php';

try {
    // Get database connection
    $db = ROI_APU_Search_DB::get_instance();
    $pdo = $db->get_pdo();
    $prefix = $db->get_prefix();

    // Build destination URL if empty
    if (empty($dest)) {
        // Obtain site_url from database (not HTTP_HOST)
        $stmt = $pdo->prepare(
            "SELECT option_value FROM {$prefix}options
             WHERE option_name = 'home' LIMIT 1"
        );
        $stmt->execute();
        $home = $stmt->fetch(PDO::FETCH_ASSOC);
        $site_url = $home ? rtrim($home['option_value'], '/') : '';

        // Try to get post_name for proper permalink
        $stmt = $pdo->prepare(
            "SELECT post_name FROM {$prefix}posts WHERE ID = ? LIMIT 1"
        );
        $stmt->execute([$postId]);
        $post = $stmt->fetch(PDO::FETCH_ASSOC);

        if ($post && !empty($post['post_name'])) {
            $dest = $site_url . '/' . $post['post_name'] . '/';
        } else {
            $dest = $site_url . '/?p=' . $postId;
        }
    }

    // Get analytics config
    $cfg = ROI_APU_Search_Analytics::get_config();

    // Log click
    ROI_APU_Search_Analytics::logClick(
        $pdo,
        $prefix,
        $cfg,
        $searchId,
        $postId,
        max(1, $position),
        max(1, $page),
        $dest
    );
} catch (\Throwable $e) {
    error_log('ROI APU Search Click Error: ' . $e->getMessage());
    // Never break redirect due to tracking
    // Fallback dest if error occurred before setting it
    if (empty($dest)) {
        $dest = '/?p=' . $postId;
    }
}

// Redirect to destination
header('Location: ' . $dest, true, 302);
exit;