import { NextRequest, NextResponse } from 'next/server';
import { generateAdCopy } from '@/lib/ai/copywriter';

export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { context, copy_rules, objective, tone, count, category } = body;

    if (!context || !objective) {
      return NextResponse.json(
        { success: false, error: 'context and objective are required' },
        { status: 400 }
      );
    }

    const variations = await generateAdCopy({ context, copy_rules, objective, tone, count, category });

    return NextResponse.json({ success: true, data: variations });
  } catch (error) {
    console.error('[AI] Error generating copy:', error);
    return NextResponse.json(
      { 
        success: false, 
        error: error instanceof Error ? error.message : 'AI error',
        details: 'Verifique se a OPENAI_API_KEY no .env.local é uma chave válida da OpenAI (começa com sk-...)'
      },
      { status: 500 }
    );
  }
}