import { Invoice, TenantInfo, DianResolutionInfo, FiscalMetrics } from '../types/index.js';

const API_BASE = '/api/v1';
const MASTER_API_KEY = 'dev_master_key_innovacion_2026_secure';

async function fetchWithAuth(url: string, options: RequestInit = {}) {
  const headers = {
    'Content-Type': 'application/json',
    'x-api-key': MASTER_API_KEY,
    ...(options.headers || {}),
  };

  const response = await fetch(`${API_BASE}${url}`, {
    ...options,
    headers,
  });

  if (!response.ok) {
    const errorBody = await response.json().catch(() => ({ message: 'Error de conexión' }));
    throw new Error(errorBody.message || `Error HTTP ${response.status}`);
  }

  return response.json();
}

export const hubApi = {
  async getMetrics(tenantId?: string): Promise<FiscalMetrics> {
    const query = tenantId && tenantId !== 'all' ? `?tenantId=${tenantId}` : '';
    const res = await fetchWithAuth(`/invoices/metrics${query}`);
    return res.data;
  },

  async getInvoices(tenantId?: string, search?: string): Promise<{ items: Invoice[]; total: number }> {
    const params = new URLSearchParams();
    if (tenantId && tenantId !== 'all') params.append('tenantId', tenantId);
    if (search) params.append('busqueda', search);

    const qs = params.toString() ? `?${params.toString()}` : '';
    const res = await fetchWithAuth(`/invoices${qs}`);
    return { items: res.data, total: res.total };
  },

  async getTenants(): Promise<TenantInfo[]> {
    const res = await fetchWithAuth('/tenants');
    return res.data;
  },

  async getResolutions(): Promise<DianResolutionInfo[]> {
    const res = await fetchWithAuth('/resolutions');
    return res.data;
  },

  async emitInvoice(payload: any, tenantId: string): Promise<Invoice> {
    const res = await fetchWithAuth('/invoices', {
      method: 'POST',
      body: JSON.stringify({ ...payload, tenantId }),
    });
    return res.data;
  },

  async getXml(invoiceId: string): Promise<string> {
    const response = await fetch(`${API_BASE}/invoices/${invoiceId}/xml`, {
      headers: { 'x-api-key': MASTER_API_KEY },
    });
    if (!response.ok) throw new Error('No se pudo obtener el XML');
    return response.text();
  },

  getPdfUrl(invoiceId: string): string {
    return `${API_BASE}/invoices/${invoiceId}/pdf`;
  },
};