import { NextRequest, NextResponse } from 'next/server'
import { authMiddleware } from '@/lib/auth-middleware'

export async function POST(request: NextRequest) {
  try {
    // No authentication required for web-speech tool

    const { message, systemPrompt } = await request.json()

    if (!message || typeof message !== 'string') {
      return NextResponse.json({ error: 'Message is required' }, { status: 400 })
    }

    // Check if OpenAI API key is configured
    if (!process.env.OPENAI_API_KEY) {
      return NextResponse.json({ error: 'OpenAI API key not configured' }, { status: 500 })
    }

    // Prepare messages for OpenAI
    const messages = [
      {
        role: 'system',
        content:
          systemPrompt ||
          'You are a helpful AI assistant. Provide clear, concise, and helpful responses to user queries.',
      },
      {
        role: 'user',
        content: message,
      },
    ]

    // Call OpenAI Chat Completions API
    const response = await fetch('https://api.openai.com/v1/chat/completions', {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${process.env.OPENAI_API_KEY}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'gpt-3.5-turbo',
        messages: messages,
        max_tokens: 1000,
        temperature: 0.7,
        top_p: 1,
        frequency_penalty: 0,
        presence_penalty: 0,
      }),
    })

    if (!response.ok) {
      const errorData = await response.text()
      console.error('OpenAI Chat API error:', errorData)
      return NextResponse.json({ error: 'AI processing failed' }, { status: 500 })
    }

    const chatResult = await response.json()

    if (!chatResult.choices || chatResult.choices.length === 0) {
      return NextResponse.json({ error: 'No response from AI' }, { status: 500 })
    }

    return NextResponse.json({
      response: chatResult.choices[0].message.content,
      usage: chatResult.usage,
    })
  } catch (error) {
    console.error('OpenAI chat error:', error)
    return NextResponse.json({ error: 'Internal server error' }, { status: 500 })
  }
}