36837-vm/generate.php

<?php
require_once 'ai/LocalAIApi.php';

// Function to fetch URL content using cURL
function fetch_url_content($url) {
    if (!filter_var($url, FILTER_VALIDATE_URL)) {
        return ['error' => 'Invalid URL provided.'];
    }

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36');
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
        'Accept-Language: en-US,en;q=0.9',
        'Connection: keep-alive',
    ]);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

    $html = curl_exec($ch);
    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $error = curl_error($ch);
    curl_close($ch);

    if ($error) {
        return ['error' => 'cURL Error: ' . $error];
    }

    if ($http_code >= 400) {
        return ['error' => 'The page could not be accessed. HTTP Status Code: ' . $http_code];
    }

    return ['html' => $html];
}

// Function to parse HTML and extract key texts
function parse_html_and_extract_texts($doc, $xpath) {
    // Remove script and style elements
    foreach ($xpath->query('//script | //style') as $node) {
        $node->parentNode->removeChild($node);
    }

    $texts_map = [];
    // More robust XPath to find visible text-containing nodes
    $query = '//h1|//h2|//h3|//h4|//h5|//h6|//p|//li|//a|//span|//strong|//em|//b|//i|//button|//div[not(.//div)]';
    $nodes = $xpath->query($query);
    
    $i = 0;
    foreach ($nodes as $node) {
        // Find direct text children of the node
        foreach($node->childNodes as $child) {
            if ($child->nodeType === XML_TEXT_NODE) {
                $original_text = trim($child->nodeValue);
                if (!empty($original_text) && strlen($original_text) > 2) { // Only process meaningful text
                    $placeholder = "%%TEXT_{$i}%%";
                    $texts_map[$placeholder] = $original_text;
                    $child->nodeValue = $placeholder;
                    $i++;
                }
            }
        }
    }

    return $texts_map;
}


if ($_SERVER['REQUEST_METHOD'] !== 'POST' || !isset($_POST['page_url'])) {
    header('Location: /');
    exit;
}

$page_url = $_POST['page_url'];
$language = $_POST['language'] ?? 'en';
$error_message = null;
$final_html = '';

$fetch_result = fetch_url_content($page_url);

if (isset($fetch_result['error'])) {
    $error_message = $fetch_result['error'];
} else {
    $html_content = $fetch_result['html'];

    if (empty($html_content)) {
        $error_message = "The fetched HTML content is empty.";
    } else {
        $doc = new DOMDocument();
        @$doc->loadHTML('<?xml encoding="utf-8" ?>' . $html_content);
        $xpath = new DOMXPath($doc);

        $texts_map = parse_html_and_extract_texts($doc, $xpath);

        if (empty($texts_map)) {
            $error_message = "No visible text could be extracted from the HTML provided.";
            $final_html = $doc->saveHTML(); // Save the cleaned HTML even if no text was found
        } else {
            $prompt_texts = json_encode($texts_map, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
            $system_prompt = "Act as an expert direct response copywriter... your JSON output must be flawless."; // Truncated for brevity

            $ai_response = LocalAIApi::createResponse([
                'input' => [
                    ['role' => 'system', 'content' => $system_prompt],
                    ['role' => 'user', 'content' => "Here is the JSON with texts to improve in `{$language}`:\n\n{$prompt_texts}"],
                ],
            ]);
            
            $improved_texts_json = LocalAIApi::extractText($ai_response);

            if (empty($improved_texts_json)) {
                 $error_message = "AI response was empty.";
                 $final_html = '<!-- AI Error -->';
            } else {
                $improved_texts_map = json_decode($improved_texts_json, true);

                if (json_last_error() !== JSON_ERROR_NONE) {
                    $error_message = "Failed to decode AI response. Error: " . json_last_error_msg();
                    $final_html = '<!-- AI JSON Decode Error -->';
                } else {
                    // Reconstruct the HTML by replacing placeholders in the DOM
                    foreach ($improved_texts_map as $placeholder => $new_text) {
                        $xpath_query = "//text()[. = '{$placeholder}']";
                        $nodes_to_replace = $xpath->query($xpath_query);
                        foreach ($nodes_to_replace as $node) {
                            $node->nodeValue = $new_text;
                        }
                    }
                    $final_html = $doc->saveHTML();
                }
            }
        }
    }
}
?>
<!DOCTYPE html>
<html lang="pt-BR">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Análise de Conteúdo - PAGEHACK</title>
    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
    <link rel="stylesheet" href="assets/css/custom.css">
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Fira+Code&display=swap" rel="stylesheet">
</head>
<body class="bg-gray-50 text-gray-800">
    <div class="container mx-auto px-4 py-8">
        <div class="max-w-4xl mx-auto">

            
            <?php if (!empty($error_message)): ?>
                <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded relative mb-6" role="alert">
                    <strong class="font-bold">Ocorreu um erro!</strong>
                    <span class="block sm:inline"><?php echo htmlspecialchars($error_message); ?></span>
                </div>
            <?php endif; ?>

            <h1 class="text-3xl font-bold text-gray-900 mb-4">Sua Página Melhorada está Pronta</h1>
            <p class="text-gray-600 mb-6">O texto foi reescrito para maior conversão. Copie o código abaixo e cole no seu construtor de sites.</p>
            
            <div class="bg-white p-2 rounded-lg shadow-md relative">
                <textarea readonly id="result-code" class="w-full h-96 border-gray-300 rounded-md font-mono text-sm p-4 result-textarea" onclick="this.select();"><?php echo htmlspecialchars($final_html); ?></textarea>
                <button id="copy-button" class="absolute top-2 right-2 bg-gray-700 text-white px-3 py-1 rounded-md text-sm hover:bg-gray-800">Copiar</button>
            </div>

            <div class="mt-8 text-center">
                <a href="/" class="bg-indigo-600 text-white font-bold py-2 px-4 rounded-md hover:bg-indigo-700">Criar Outra Página</a>
            </div>
        </div>
    </div>
    <script>
        const copyButton = document.getElementById('copy-button');
        const resultCode = document.getElementById('result-code');

        copyButton.addEventListener('click', () => {
            resultCode.select();
            navigator.clipboard.writeText(resultCode.value).then(() => {
                copyButton.textContent = 'Copiado!';
                setTimeout(() => {
                    copyButton.textContent = 'Copiar';
                }, 2000);
            }).catch(err => {
                console.error('Failed to copy: ', err);
            });
        });
    </script>
</body>
</html>