import type { PageServerLoad } from './$types';
import { getAuthTokens, authenticatedFetch } from '$lib/server/api';

export const load: PageServerLoad = async ({ cookies, fetch, url, parent }) => {
    const parentData = await parent();
    const { accessToken } = getAuthTokens(cookies);

    if (!accessToken) {
        return { error: 'No authenticated', concepts: { items: [], total: 0, page: 1, page_size: 50, pages: 0 } };
    }

    try {
        const page = Number(url.searchParams.get('page')) || 1;
        const pageSize = Number(url.searchParams.get('pageSize')) || 50;
        
        // Obtener company_id de la cookie o usar el primero disponible
        const cookieCompanyId = cookies.get('active_company_id');
        const companyId = cookieCompanyId 
            ? parseInt(cookieCompanyId)
            : parentData.companies?.[0]?.id;

        if (!companyId) {
            return { error: 'No company selected', concepts: { items: [], total: 0, page: 1, page_size: 50, pages: 0 } };
        }

        const filters: Record<string, string> = {};
        const brokerKey = url.searchParams.get('broker_key');
        const concept = url.searchParams.get('concept');

        if (brokerKey) filters.broker_key = brokerKey;
        if (concept) filters.concept = concept;

        const queryParams = new URLSearchParams({ 
            page: page.toString(), 
            page_size: pageSize.toString(), 
            company_id: companyId.toString(),
            ...filters 
        });
        const response = await authenticatedFetch(`v1/a76/customs-broker-concepts/?${queryParams.toString()}`, { method: 'GET' }, cookies, fetch);

        if (!response.ok) {
            let errorMessage = 'Failed to load customs broker concepts';
            try {
                const errorData = await response.json();
                errorMessage = errorData.detail || errorData.message || errorMessage;
            } catch (e) {
                errorMessage = response.statusText || errorMessage;
            }

            return {
                error: errorMessage,
                status: response.status,
                concepts: { items: [], total: 0, page, page_size: pageSize, pages: 0 }
            };
        }

        const data = await response.json();
        // Calculate pages if not provided by API
        const pages = data.pages || Math.ceil(data.total / pageSize);
        
        return { concepts: { ...data, pages }, status: 200 };
    } catch (error: any) {
        console.error('Error loading customs broker concepts:', error);
        return { 
            error: error.message || 'Error loading', 
            status: error.status || 500,
            concepts: { items: [], total: 0, page: 1, page_size: 50, pages: 0 } 
        };
    }
};
