<?php
/**
 * ACTION: Web fetcher
 * -------------------
 * Call format:
 *   @web example.com
 *
 * Expected output:
 *   (Plain text content of the website via `lynx -dump -nolist`)
 */

// 1. Register the action with expected argument types
registerAction(
    (new Action())
        ->setFunctionName("web")
        ->setArgumentsTypes(["website"])  // single argument: website URL
);

/**
 * 2. Implement the function
 *
 * @param string $website
 * @return string
 */
function web(string $website): string {
    // Ensure URL has a scheme
    if (!preg_match('~^https?://~i', $website)) {
        $website = "https://$website";
    }

    // Escape for shell safety
    $escaped = escapeshellarg($website);

    // Run lynx and capture output
    $output = shell_exec("lynx -dump -nolist $escaped 2>/dev/null | head -n 250");

    return $output ?: "[error] Unable to fetch $website";
}