ai chat bot!

.env

@@ -0,0 +1,2 @@
+OPENAI_API_KEY=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
+OPENAI_MODEL=gpt-4o

.env.example

@@ -0,0 +1,2 @@
+OPENAI_API_KEY=
+OPENAI_MODEL=gpt-4o-mini

api/chat.php

@@ -0,0 +1,92 @@
+<?php
+ini_set('display_errors', 1);
+ini_set('display_startup_errors', 1);
+error_reporting(E_ALL);
+
+session_start();
+
+$logFile = __DIR__ . '/error.log';
+// Clear the log file for each request to ensure we're only seeing the latest error.
+file_put_contents($logFile, ""); 
+
+// This is the top-level error handler.
+// It will catch any exception that isn't caught elsewhere.
+set_exception_handler(function($exception) use ($logFile) {
+    http_response_code(500);
+    $error = [
+        'error' => 'An unexpected error occurred.',
+        'message' => $exception->getMessage(),
+        'file' => $exception->getFile(),
+        'line' => $exception->getLine(),
+    ];
+    file_put_contents($logFile, json_encode($error, JSON_PRETTY_PRINT));
+    // We must output valid JSON, otherwise the frontend will get a syntax error.
+    echo json_encode($error); 
+});
+
+require_once __DIR__ . '/../lib/config.php';
+require_once __DIR__ . '/../lib/OpenAIService.php';
+require_once __DIR__ . '/../db/config.php';
+
+// The main try-catch block for the application logic.
+try {
+    
+    // Check if it's a POST request
+    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+        http_response_code(405); // Method Not Allowed
+        throw new Exception('Only POST requests are allowed.');
+    }
+
+    // Get the user's message from the request body
+    $json_data = file_get_contents('php://input');
+    $data = json_decode($json_data);
+    $user_message = $data->message ?? '';
+
+    if (empty($user_message)) {
+        http_response_code(400); // Bad Request
+        throw new Exception('Message is required.');
+    }
+
+    // --- Database Interaction ---
+    $pdo = db();
+    if (empty($_SESSION['chat_session_id'])) {
+        $_SESSION['chat_session_id'] = bin2hex(random_bytes(16));
+    }
+    $chat_session_id = $_SESSION['chat_session_id'];
+
+    // Log the user's message
+    $stmt = $pdo->prepare("INSERT INTO chat_log (session_id, sender, message) VALUES (?, ?, ?)");
+    $stmt->execute([$chat_session_id, 'user', $user_message]);
+
+    // --- OpenAI API Call ---
+    $bot_response_data = OpenAIService::getCompletion($user_message);
+
+    if (isset($bot_response_data['error'])) {
+        throw new Exception('OpenAI API Error: ' . $bot_response_data['error']);
+    }
+    $bot_response = $bot_response_data['reply'];
+
+    // Log the bot's response
+    $stmt = $pdo->prepare("INSERT INTO chat_log (session_id, sender, message) VALUES (?, ?, ?)");
+    $stmt->execute([$chat_session_id, 'bot', $bot_response]);
+    
+    // --- Send Response ---
+    header('Content-Type: application/json');
+    echo json_encode(['reply' => $bot_response]);
+
+} catch (Throwable $e) {
+    // This will catch both Exceptions and Errors
+    http_response_code(500);
+    $errorDetails = [
+        'error' => 'Caught in main try-catch',
+        'message' => $e->getMessage(),
+        'file' => $e->getFile(),
+        'line' => $e->getLine(),
+        'trace' => $e->getTraceAsString()
+    ];
+    file_put_contents($logFile, date('Y-m-d H:i:s') . " - " . json_encode($errorDetails, JSON_PRETTY_PRINT) . "
+", FILE_APPEND);
+    // Ensure a JSON response is sent on error
+    header('Content-Type: application/json');
+    echo json_encode($errorDetails);
+}

api/error.log

@@ -0,0 +1,7 @@
+2025-09-11 22:08:09 - {
+    "error": "Caught in main try-catch",
+    "message": "Only POST requests are allowed.",
+    "file": "\/home\/ubuntu\/executor\/workspace\/api\/chat.php",
+    "line": 37,
+    "trace": "#0 {main}"
+}

assets/css/custom.css

@@ -0,0 +1,93 @@
+body {
+    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+    background-color: #F3F4F6;
+    margin: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 100vh;
+}
+
+.chat-container {
+    width: 100%;
+    max-width: 600px;
+    height: 100%;
+    max-height: 800px;
+    display: flex;
+    flex-direction: column;
+    background-color: #FFFFFF;
+    border-radius: 8px;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+    overflow: hidden;
+}
+
+.chat-header {
+    background: linear-gradient(90deg, #4F46E5, #6D28D9);
+    color: white;
+    padding: 16px;
+    text-align: center;
+    font-size: 1.25rem;
+}
+
+.chat-box {
+    flex-grow: 1;
+    padding: 16px;
+    overflow-y: auto;
+    display: flex;
+    flex-direction: column;
+    gap: 12px;
+}
+
+.chat-message {
+    padding: 10px 16px;
+    border-radius: 18px;
+    max-width: 75%;
+    word-wrap: break-word;
+}
+
+.user-message {
+    background-color: #4F46E5;
+    color: white;
+    align-self: flex-end;
+    border-bottom-right-radius: 4px;
+}
+
+.ai-message {
+    background-color: #E5E7EB;
+    color: #1F2937;
+    align-self: flex-start;
+    border-bottom-left-radius: 4px;
+}
+
+.chat-footer {
+    padding: 16px;
+    border-top: 1px solid #E5E7EB;
+}
+
+#chat-form {
+    display: flex;
+    gap: 10px;
+}
+
+#message-input {
+    flex-grow: 1;
+    border: 1px solid #D1D5DB;
+    padding: 12px;
+    border-radius: 8px;
+    font-size: 1rem;
+}
+
+#chat-form button {
+    background-color: #4F46E5;
+    color: white;
+    border: none;
+    padding: 12px 20px;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 1rem;
+    transition: background-color 0.2s;
+}
+
+#chat-form button:hover {
+    background-color: #4338CA;
+}

assets/js/main.js

@@ -0,0 +1,66 @@
+document.addEventListener('DOMContentLoaded', () => {
+    const chatForm = document.getElementById('chat-form');
+    const messageInput = document.getElementById('message-input');
+    const chatBox = document.getElementById('chat-box');
+
+    // Load chat history on page load
+    function loadChatHistory() {
+        if (window.chatHistory && window.chatHistory.length > 0) {
+            window.chatHistory.forEach(item => {
+                appendMessage(item.message, item.sender);
+            });
+        }
+    }
+
+    chatForm.addEventListener('submit', async (e) => {
+        e.preventDefault();
+
+        const message = messageInput.value.trim();
+        if (!message) return;
+
+        appendMessage(message, 'user');
+        messageInput.value = '';
+
+        const typingIndicator = appendMessage('Typing...', 'ai');
+
+        try {
+            const response = await fetch('/api/chat.php', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify({ message })
+            });
+
+            if (!response.ok) {
+                throw new Error('Network response was not ok');
+            }
+
+            const data = await response.json();
+            typingIndicator.remove();
+            
+            if(data.error) {
+                appendMessage(data.error, 'ai');
+            } else {
+                appendMessage(data.reply, 'ai');
+            }
+
+        } catch (error) {
+            typingIndicator.remove();
+            appendMessage('Sorry, something went wrong.', 'ai');
+            console.error('Error:', error);
+        }
+    });
+
+    function appendMessage(message, sender) {
+        const messageElement = document.createElement('div');
+        messageElement.classList.add('chat-message', `${sender}-message`);
+        messageElement.textContent = message;
+        chatBox.appendChild(messageElement);
+        chatBox.scrollTop = chatBox.scrollHeight;
+        return messageElement;
+    }
+
+    // Initial load
+    loadChatHistory();
+});

db/config.php

@@ -6,12 +6,35 @@ define('DB_USER', 'app_30855');
 define('DB_PASS', 'eee81949-37de-47f9-a26f-14ebc8402f7f');
 
 function db() {
-  static $pdo;
-  if (!$pdo) {
-    $pdo = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset=utf8mb4', DB_USER, DB_PASS, [
-      PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-      PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-    ]);
-  }
-  return $pdo;
-}
+    static $pdo;
+    if ($pdo) {
+        return $pdo;
+    }
+
+    $dsn = 'mysql:host=' . DB_HOST . ';charset=utf8mb4';
+    $options = [
+        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+    ];
+
+    try {
+        // Try connecting to the database directly
+        $pdo = new PDO($dsn . ';dbname=' . DB_NAME, DB_USER, DB_PASS, $options);
+    } catch (PDOException $e) {
+        // If the database doesn't exist, create it
+        if (strpos($e->getMessage(), 'Unknown database') !== false) {
+            try {
+                $tempPdo = new PDO($dsn, DB_USER, DB_PASS, $options);
+                $tempPdo->exec('CREATE DATABASE IF NOT EXISTS `' . DB_NAME . '`');
+                // Now, connect to the newly created database
+                $pdo = new PDO($dsn . ';dbname=' . DB_NAME, DB_USER, DB_PASS, $options);
+            } catch (PDOException $ce) {
+                throw new PDOException("Failed to create database and connect: " . $ce->getMessage());
+            }
+        } else {
+            throw new PDOException("Database connection failed: " . $e->getMessage());
+        }
+    }
+
+    return $pdo;
+}

db/migrate.php

@@ -0,0 +1,12 @@
+<?php
+require_once __DIR__ . '/config.php';
+
+try {
+    $pdo = db();
+    $sql = file_get_contents(__DIR__ . '/migrations/001_create_chat_log_table.sql');
+    $pdo->exec($sql);
+    echo "Database migration successful! Table 'chat_log' is ready.\n";
+} catch (PDOException $e) {
+    die("Database migration failed: " . $e->getMessage() . "\n");
+}
+

db/migrations/001_create_chat_log_table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS `chat_log` (
+  `id` INT AUTO_INCREMENT PRIMARY KEY,
+  `session_id` VARCHAR(255) NOT NULL,
+  `sender` VARCHAR(50) NOT NULL,
+  `message` TEXT NOT NULL,
+  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

index.php

@@ -1,131 +1,48 @@
 <?php
-declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
+require_once __DIR__ . '/db/config.php';
 
-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
+session_start();
+
+$chat_history = [];
+if (!empty($_SESSION['session_id'])) {
+    try {
+        $pdo = db();
+        $stmt = $pdo->prepare("SELECT sender, message FROM chat_log WHERE session_id = ? ORDER BY created_at ASC");
+        $stmt->execute([$_SESSION['session_id']]);
+        $chat_history = $stmt->fetchAll();
+    } catch (PDOException $e) {
+        // Not critical if history fails to load, so we just log it.
+        error_log("Could not load chat history: " . $e->getMessage());
+    }
+}
 ?>
-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
 <head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-  <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;700&display=swap" rel="stylesheet">
-  <style>
-    :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
-      --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
-    }
-    body {
-      margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-      color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
-      padding: 2rem;
-    }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
-    h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
-    }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
-    }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-    }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
-    }
-  </style>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Chat with AI</title>
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
 </head>
 <body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
-      </div>
-      <p class="hint">Flatlogic AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
+    <div class="chat-container">
+        <div class="chat-header">
+            <h2>AI Chat</h2>
+        </div>
+        <div class="chat-box" id="chat-box">
+            <!-- Chat messages will be appended here -->
+        </div>
+        <div class="chat-footer">
+            <form id="chat-form">
+                <input type="text" id="message-input" placeholder="Type your message..." autocomplete="off">
+                <button type="submit">Send</button>
+            </form>
+        </div>
     </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
+    
+    <script>
+        const chatHistory = <?php echo json_encode($chat_history); ?>;
+    </script>
+    <script src="assets/js/main.js?v=<?php echo time(); ?>"></script>
 </body>
-</html>
+</html>

lib/OpenAIService.php

@@ -0,0 +1,79 @@
+<?php
+
+class OpenAIService
+{
+    private static $apiKey;
+    private static $model;
+
+    public static function init()
+    {
+        self::$apiKey = getenv('OPENAI_API_KEY');
+        self::$model = getenv('OPENAI_MODEL') ?: 'gpt-4o-mini';
+    }
+
+    public static function getCompletion($message)
+    {
+        if (empty(self::$apiKey)) {
+            return ['error' => 'OpenAI API key is not configured.'];
+        }
+
+        $url = 'https://api.openai.com/v1/chat/completions';
+
+        $data = [
+            'model' => self::$model,
+            'messages' => [
+                ['role' => 'system', 'content' => 'You are a helpful assistant.'],
+                ['role' => 'user', 'content' => $message]
+            ],
+            'max_tokens' => 150
+        ];
+
+        $headers = [
+            'Content-Type: application/json',
+            'Authorization: Bearer ' . self::$apiKey
+        ];
+
+        $options = [
+            'http' => [
+                'header'  => implode("\r\n", $headers),
+                'method'  => 'POST',
+                'content' => json_encode($data),
+                'ignore_errors' => true,
+                'timeout' => 30,
+            ],
+        ];
+
+        $context  = stream_context_create($options);
+        $response = @file_get_contents($url, false, $context);
+
+        // Get HTTP status code from the response headers
+        $httpcode = 0;
+        if (isset($http_response_header[0])) {
+            preg_match('{HTTP/1\.\d (\d{3})}', $http_response_header[0], $matches);
+            if (isset($matches[1])) {
+                $httpcode = (int)$matches[1];
+            }
+        }
+
+        if ($response === false) {
+            $error = error_get_last();
+            return ['error' => 'API call failed: ' . ($error['message'] ?? 'Unknown error')];
+        }
+
+        if ($httpcode !== 200) {
+            return ['error' => 'API returned status ' . $httpcode . ': ' . $response];
+        }
+
+        $decodedResponse = json_decode($response, true);
+
+        if (isset($decodedResponse['choices'][0]['message']['content'])) {
+            return ['reply' => $decodedResponse['choices'][0]['message']['content']];
+        } elseif (isset($decodedResponse['error'])) {
+            return ['error' => $decodedResponse['error']['message']];
+        }
+
+        return ['error' => 'Unexpected API response format.'];
+    }
+}
+
+OpenAIService::init();

lib/config.php

@@ -0,0 +1,30 @@
+<?php
+
+function loadEnv($path)
+{
+    if (!file_exists($path)) {
+        return false;
+    }
+
+    $lines = file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+    foreach ($lines as $line) {
+        if (strpos(trim($line), '#') === 0) {
+            continue;
+        }
+
+        list($name, $value) = explode('=', $line, 2);
+        $name = trim($name);
+        $value = trim($value);
+
+        if (!array_key_exists($name, $_SERVER) && !array_key_exists($name, $_ENV)) {
+            putenv(sprintf('%s=%s', $name, $value));
+            $_ENV[$name] = $value;
+            $_SERVER[$name] = $value;
+        }
+    }
+    return true;
+}
+
+// Load .env from the project root
+$projectRoot = __DIR__ . '/..';
+loadEnv($projectRoot . '/.env');