<?php
ob_start(); // Start output buffering

// Include PrestaShop configuration
require_once dirname(__FILE__) . "/../../config/config.inc.php";
require_once dirname(__FILE__) . "/../../init.php";

// Autoloader for module classes
spl_autoload_register(function ($className) {
    $classMap = [
        'EcomZoneException' => 'classes/EcomZoneException.php',
        'EcomZoneClient' => 'classes/EcomZoneClient.php',
        'EcomZoneLogger' => 'classes/EcomZoneLogger.php',
        'EcomZoneProductSync' => 'classes/EcomZoneProductSync.php',
        'EcomZoneProductImport' => 'classes/EcomZoneProductImport.php',
        'EcomZoneCategoryHandler' => 'classes/EcomZoneCategoryHandler.php',
        'IProductSync' => 'classes/interfaces/IProductSync.php',
        'ICategory' => 'classes/interfaces/ICategory.php'
    ];

    if (isset($classMap[$className])) {
        require_once dirname(__FILE__) . '/' . $classMap[$className];
    }
});

// Function to send JSON response
function sendJsonResponse($data, $statusCode = 200)
{
    if (php_sapi_name() === 'cli') {
        echo json_encode($data, JSON_PRETTY_PRINT) . "\n";
    } else {
        if (!headers_sent()) {
            http_response_code($statusCode);
            header("Content-Type: application/json");
        }
        echo json_encode($data);
    }
    exit($statusCode === 200 ? 0 : 1);
}

// Get token from either GET parameter or command line argument
$token = '';
if (php_sapi_name() === 'cli') {
    global $argv;
    foreach ($argv as $arg) {
        if (strpos($arg, 'token=') === 0) {
            $token = substr($arg, 6);
            break;
        }
    }
} else {
    $token = Tools::getValue('token');
}

// Security check
$configToken = Configuration::get("ECOMZONE_CRON_TOKEN");

if (empty($token) || $token !== $configToken) {
    sendJsonResponse([
        'success' => false,
        'error' => 'Invalid token',
        'provided_token' => $token,
        'expected_token' => $configToken
    ], 403);
}

try {
    // Initialize logger
    EcomZoneLogger::log("Starting cron execution", "INFO", [
        "time" => date("Y-m-d H:i:s"),
    ]);

    // Check last run time to prevent too frequent execution
    $lastRun = Configuration::get("ECOMZONE_LAST_CRON_RUN");
    $minInterval = 360;

    if (!empty($lastRun) && strtotime($lastRun) + $minInterval > time()) {
        EcomZoneLogger::log("Skipping cron - too soon since last run", "INFO", [
            "last_run" => $lastRun,
            "next_run" => date("Y-m-d H:i:s", strtotime($lastRun) + $minInterval),
        ]);

        sendJsonResponse([
            "success" => false,
            "message" => "Too soon since last run",
            "last_run" => $lastRun,
            "next_run" => date("Y-m-d H:i:s", strtotime($lastRun) + $minInterval),
        ]);
    }

    // Initialize Product Sync
    $productSync = new EcomZoneProductSync();

    // Start the import process
    $result = $productSync->importProducts(100); // Import 100 products per page

    // Update last run time
    Configuration::updateValue("ECOMZONE_LAST_CRON_RUN", date("Y-m-d H:i:s"));

    // Log completion and send response
    EcomZoneLogger::log("Cron execution completed", "INFO", [
        "imported" => $result["imported"],
        "total" => $result["total"],
        "errors" => count($result["errors"]),
    ]);

    sendJsonResponse([
        "success" => true,
        "result" => $result,
        "timestamp" => date("Y-m-d H:i:s"),
    ]);
} catch (Exception $e) {
    EcomZoneLogger::log("Cron execution failed", "ERROR", [
        "error" => $e->getMessage(),
        "trace" => $e->getTraceAsString()
    ]);

    sendJsonResponse([
        "success" => false,
        "error" => $e->getMessage()
    ], 500);
}