src/app/api/generate-image/route.ts

import { NextResponse } from 'next/server';

export async function POST(request: Request) {
  const { prompt } = await request.json();

  try {
    const response = await fetch(
      "https://api-inference.huggingface.co/models/stabilityai/stable-diffusion-3.5-large",
      {
        headers: {
          Authorization: `Bearer ${process.env.NEXT_PUBLIC_HUGGINGFACE_API_KEY}`,
          "Content-Type": "application/json",
        },
        method: "POST",
        body: JSON.stringify({ 
          inputs: prompt,
          parameters: {
            negative_prompt: "blurry, bad quality, distorted",
            num_inference_steps: 30,
            guidance_scale: 7.5,
          }
        }),
      }
    );
    
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }
    
    const imageBlob = await response.blob();
    const arrayBuffer = await imageBlob.arrayBuffer();
    const buffer = Buffer.from(arrayBuffer);
    const base64Image = buffer.toString('base64');
    
    const contentType = response.headers.get('content-type') || 'image/jpeg';
    
    return NextResponse.json({ 
      imageUrl: `data:${contentType};base64,${base64Image}`,
      success: true 
    });
  } catch (error) {
    console.error('Image generation error:', error);
    return NextResponse.json({ 
      error: 'Failed to generate image',
      success: false,
    }, { status: 500 });
  }
}