<?php
// Prevent any output before headers
error_reporting(0);
ini_set('display_errors', 0);

header('Content-Type: application/json');

// Handle non-POST requests
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    die(json_encode(['error' => 'Method not allowed']));
}

// Get request body
$body = file_get_contents('php://input');

// Always log to file first (this works)
$logFile = __DIR__ . '/webhook_debug.log';
file_put_contents($logFile, date('Y-m-d H:i:s') . " - " . $body . "
", FILE_APPEND);

// Try database, but don't fail if it doesn't work
$dbSuccess = false;
$dbError = null;
$insertId = null;

try {
    // Check if config exists
    $configPath = __DIR__ . '/config.php';
    if (!file_exists($configPath)) {
        throw new Exception("config.php not found at: " . $configPath);
    }
    require_once $configPath;

    // Check if $pdo exists
    if (!isset($pdo)) {
        throw new Exception("PDO connection not established in config.php");
    }

    // Parse Tiny Talk payload
    $data = json_decode($body, true);
    $eventType = $data['type'] ?? 'unknown';
    $payload = $data['payload'] ?? [];

    // Extract fields
    $externalChatId = $payload['id'] ?? null;

    // Get customer name
    $firstName = $payload['name']['first'] ?? '';
    $lastName = $payload['name']['last'] ?? '';
    $customerName = trim($firstName . ' ' . $lastName);
    if (empty($customerName)) $customerName = 'Unknown';

    // Get email and phone
    $customerEmail = $payload['email']['address'] ?? $payload['email']['pendingAddress'] ?? null;
    $customerPhone = $payload['phone']['number'] ?? null;

    // Parse the ISO date properly
    $createdAt = $payload['createdAt'] ?? null;
    if ($createdAt) {
        $createdAt = date('Y-m-d H:i:s', strtotime($createdAt));
    } else {
        $createdAt = date('Y-m-d H:i:s');
    }

    // Insert with all fields
    $stmt = $pdo->prepare("INSERT INTO chat_logs (external_chat_id, event_type, customer_name, customer_email, customer_phone, raw_payload, created_at) VALUES (?, ?, ?, ?, ?, ?, ?)");
    $stmt->execute([$externalChatId, $eventType, $customerName, $customerEmail, $customerPhone, $body, $createdAt]);
    $insertId = $pdo->lastInsertId();
    $dbSuccess = true;

} catch (Exception $e) {
    $dbError = $e->getMessage();
}

// Always return 200
http_response_code(200);
echo json_encode([
    'success' => true,
    'logged_to_file' => true,
    'db_success' => $dbSuccess,
    'db_error' => $dbError,
    'insert_id' => $insertId
]);