const express = require('express');
const LumaAI = require('lumaai');

// Initialize Express
const app = express();
app.use(express.json());

// Initialize LumaAI client
const client = new LumaAI({
  authToken: 'YOUR_LUMA_API_KEY' // Replace with your real key
});

// Endpoint to generate a video
app.post('/api/generate-video', async (req, res) => {
  try {
    const { prompt } = req.body; // e.g., "A futuristic city skyline at sunset"
    // Create a Dream Machine generation
    const generation = await client.generations.create({
      prompt,
      model: 'ray-2',       // or whichever model is recommended
      resolution: '720p',
      duration: '5s'
    });

    // Poll until completed or failed
    let state = generation.state;
    while (state !== 'completed' && state !== 'failed') {
      await new Promise(resolve => setTimeout(resolve, 5000)); // Wait 5 seconds
      const updated = await client.generations.get({ id: generation.id });
      state = updated.state;
      if (state === 'completed') {
        return res.json({ videoUrl: updated.assets.video });
      } else if (state === 'failed') {
        return res.status(500).json({ error: 'Generation failed' });
      }
    }
  } catch (error) {
    console.error(error);
    res.status(500).json({ error: error.message });
  }
});

// Serve your website from the "public" folder (optional)
app.use(express.static('public'));

// Start the server
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
  console.log(`Server listening on port ${PORT}`);
});