<?php
/**
 * AJAX Endpoint for Box ID Validation
 */

// Enable error reporting for debugging (disable in production)
error_reporting(E_ALL);
ini_set('display_errors', 0); // Don't display errors in output

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

try {
    // Load dependencies
    require_once __DIR__ . '/vendor/autoload.php';
    require_once __DIR__ . '/AuthMiddleware.php';
    require_once __DIR__ . '/BoxService.php';

    // Check authentication
    $auth = new AuthMiddleware();
    $user = $auth->requireAuth();

    // Check if this is a POST request
    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
        http_response_code(405);
        echo json_encode([
            'success' => false,
            'error' => 'Method not allowed'
        ]);
        exit;
    }

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

    if (!isset($input['boxId']) || empty($input['boxId'])) {
        http_response_code(400);
        echo json_encode([
            'success' => false,
            'error' => 'Box ID is required'
        ]);
        exit;
    }

    $boxId = trim($input['boxId']);

    // Validate Box ID format (should be numeric)
    if (!is_numeric($boxId)) {
        http_response_code(400);
        echo json_encode([
            'success' => false,
            'error' => 'Invalid Box ID format. Box ID must be numeric.'
        ]);
        exit;
    }

    // Initialize Box service and validate
    $boxService = new BoxService();
    $result = $boxService->validateBoxId($boxId);

    if (!$result['valid']) {
        http_response_code(404);
        echo json_encode([
            'success' => false,
            'error' => $result['error'] ?? 'Box ID not found or inaccessible'
        ]);
        exit;
    }

    // Return successful validation with data
    echo json_encode([
        'success' => true,
        'data' => [
            'boxId' => $boxId,
            'folderName' => $result['folderInfo']['name'],
            'masterCampaignNumber' => $result['grandparent']['name'] ?? 'N/A',
            'masterCampaignId' => $result['grandparent']['id'] ?? null,
            'contents' => [
                'total' => $result['contents']['total'],
                'folders' => $result['contents']['folders'],
                'files' => $result['contents']['files']
            ]
        ]
    ]);

} catch (Exception $e) {
    // Log error (in production, log to file instead of returning details)
    error_log('Box validation error: ' . $e->getMessage());

    http_response_code(500);
    echo json_encode([
        'success' => false,
        'error' => 'Server error occurred while validating Box ID',
        'debug' => $e->getMessage() // Remove in production
    ]);
}