const { VertexAI } = require('@google-cloud/vertexai');

async function testGemini3Global() {
  console.log('🧪 Testing Gemini 3 Pro Preview in GLOBAL location...\n');
  
  const vertexAI = new VertexAI({
    project: 'gen-lang-client-0980079410',
    location: 'global',  // ← KEY: Use 'global' not regional!
  });
  
  console.log('Model: gemini-3-pro-preview');
  console.log('Location: global');
  console.log('Project: gen-lang-client-0980079410\n');
  
  try {
    const model = vertexAI.getGenerativeModel({
      model: 'gemini-3-pro-preview',
      systemInstruction: 'You are a helpful AI assistant.',
      generationConfig: { 
        temperature: 1.0,
        responseMimeType: 'application/json',
      },
    });
    
    console.log('⏳ Sending test request...\n');
    
    const response = await model.generateContent({
      contents: [{
        role: 'user',
        parts: [{ 
          text: 'Return JSON with this exact structure: {"status": "success", "model": "gemini-3-pro-preview", "message": "Gemini 3 is working!", "features": ["thinking_mode", "1M_context", "multimodal"]}' 
        }],
      }],
    });
    
    const text = response.response?.candidates?.[0]?.content?.parts?.[0]?.text || '';
    console.log('✅ RAW RESPONSE:\n', text, '\n');
    
    const parsed = JSON.parse(text);
    
    if (parsed.status === 'success') {
      console.log('🎉🎉🎉 SUCCESS! GEMINI 3 PRO PREVIEW IS WORKING! 🎉🎉🎉\n');
      console.log('✅ Model:', parsed.model);
      console.log('✅ Message:', parsed.message);
      console.log('✅ Features:', parsed.features?.join(', '));
      console.log('\n🚀 You have full access to Gemini 3 Pro Preview!');
      console.log('📊 1M token context | Thinking mode | Multimodal');
      return true;
    }
  } catch (error) {
    console.error('❌ Error:', error.message);
    if (error.message.includes('404')) {
      console.log('\n💡 Model still not accessible. You may need to:');
      console.log('   1. Enable the model in the console');
      console.log('   2. Accept usage terms');
      console.log('   3. Wait for API access approval');
    }
    return false;
  }
}

testGemini3Global();