import { SYSTEM_PROMPT } from '../prompts/extractRecipe.js';

const OLLAMA_URL = process.env.OLLAMA_URL || 'http://localhost:11434';
const MODEL = process.env.OLLAMA_MODEL || 'mistral';

export async function isOllamaAvailable() {
  try {
    const res = await fetch(`${OLLAMA_URL}/api/tags`, { signal: AbortSignal.timeout(3000) });
    return res.ok;
  } catch {
    return false;
  }
}

export async function extractRecipe(description) {
  const response = await fetch(`${OLLAMA_URL}/api/generate`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      model: MODEL,
      system: SYSTEM_PROMPT,
      prompt: `Extrahiere ein Rezept aus dieser TikTok-Videobeschreibung:\n\n${description}`,
      stream: false,
    }),
  });

  if (!response.ok) {
    throw new Error(`Ollama Fehler: ${response.status}`);
  }

  const data = await response.json();
  let text = data.response.trim();

  if (text.startsWith('```')) {
    text = text.replace(/^```(?:json)?\n?/, '').replace(/\n?```$/, '');
  }

  return JSON.parse(text);
}