// API client for updates-api service
const UPDATES_API_URL = process.env.UPDATES_API_URL || 'http://localhost:8080';

export type Link = {
  id: number;
  title: string;
  url: string;
  category: 'external' | 'internal' | 'resource' | 'tool';
  description: string | null;
  icon: string | null;
  sort_order: number;
};

export type Update = {
  id: number;
  slug: string;
  product: 'batchmaker' | 'standalone';
  title: string;
  summary: string;
  body_markdown: string;
  published_at: string;
  created_at: string;
  updated_at: string;
  link_url: string | null;
};

/**
 * Fetch visible links from the updates-api
 * Used for displaying links on the homepage
 */
export async function fetchLinks(): Promise<Link[]> {
  try {
    const res = await fetch(`${UPDATES_API_URL}/v1/links`, {
      next: { revalidate: 60 }, // ISR: Cache 60s
    });
    
    if (!res.ok) {
      console.error('Failed to fetch links:', res.status, res.statusText);
      return [];
    }
    
    const data = await res.json();
    return data.data || [];
  } catch (error) {
    console.error('Error fetching links:', error);
    return [];
  }
}

/**
 * Fetch recent product updates
 * @param product Filter by product (optional)
 * @param limit Max number of updates (default: 5)
 */
export async function fetchUpdates(
  product?: 'batchmaker' | 'standalone',
  limit: number = 5
): Promise<Update[]> {
  try {
    const params = new URLSearchParams();
    if (product) params.set('product', product);
    params.set('limit', String(limit));
    
    const res = await fetch(
      `${UPDATES_API_URL}/v1/updates?${params}`,
      { next: { revalidate: 300 } } // ISR: Cache 5min
    );
    
    if (!res.ok) {
      console.error('Failed to fetch updates:', res.status, res.statusText);
      return [];
    }
    
    const data = await res.json();
    return data.data || [];
  } catch (error) {
    console.error('Error fetching updates:', error);
    return [];
  }
}

/**
 * Fetch a single update by slug
 */
export async function fetchUpdateBySlug(slug: string): Promise<Update | null> {
  try {
    const res = await fetch(`${UPDATES_API_URL}/v1/updates/${slug}`, {
      next: { revalidate: 300 },
    });
    
    if (!res.ok) {
      return null;
    }
    
    const data = await res.json();
    return data.data || null;
  } catch (error) {
    console.error('Error fetching update:', error);
    return null;
  }
}