import { dev } from '$app/environment';
import { uuid } from '$lib/stores/uuid';
import type { Unsubscriber } from 'svelte/store';

function getUrlString(): string {
  if (dev) {
    const testUrl: string = 'http://localhost:8460';
    console.info('DEVMODE active, using testing URL: ', testUrl);
    return testUrl;
  } else {
    const currentUrl: string = `https://${window.location.host}`;
    return currentUrl;
  }
}

export async function apiGet(path: string): Promise<any> {
  let uuidString: string = '';
  let unsubscribe: Unsubscriber;
  try {
    unsubscribe = uuid.subscribe((value) => {
      uuidString = value;
    });
  } catch (err) {
    throw new Error('Unable to read UUID');
  }

  const options = {
    method: 'GET',
    headers: {
      uuid: uuidString
    }
  };

  try {
    const res = await fetch(getUrlString() + path, options);

    if (!res.ok) {
      throw new Error('Network response not ok');
    }
    const contentType = res.headers.get('content-type');
    if (!contentType || !contentType.includes('application/json')) {
      throw new Error('Invalid response.  Require JSON.');
    }
    return await res.json();
  } catch (err) {
    console.error('Error fetching data:', err);
    throw err;
  } finally {
    unsubscribe();
  }
}