<?php
require_once __DIR__ . '/../../core/config.php';
require_once __DIR__ . '/../../core/session.php';
require_once __DIR__ . '/../../core/database.php';
require_once __DIR__ . '/../../core/auth.php';
require_once __DIR__ . '/../../core/permissions.php';
require_once __DIR__ . '/../../services/billing/BillingUnifiedIssuerService.php';

require_login();
header('Content-Type: application/json; charset=utf-8');

if (!user_can('billing.manual.prepare') && !user_can('billing.documents.adjust') && current_user_role() !== 'admin') {
    http_response_code(403);
    echo json_encode(array('success' => false, 'message' => 'No tienes permisos para buscar documentos de referencia.'));
    exit;
}

try {
    $items = (new BillingUnifiedIssuerService(db()))->searchSourceDocuments(
        (string)($_GET['document_key'] ?? ''),
        (string)($_GET['q'] ?? ''),
        (string)($_GET['environment'] ?? 'sandbox'),
        (int)($_GET['limit'] ?? 30)
    );
    echo json_encode(array('success' => true, 'data' => $items, 'items' => $items), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
} catch (Throwable $e) {
    http_response_code(400);
    echo json_encode(array('success' => false, 'message' => $e->getMessage()), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
}
