"""
Tests for Triage Agent.

Tests entity extraction and classification logic.
"""

import pytest
from unittest.mock import Mock, patch, AsyncMock

from src.agents.triage_agent import (
    TriageAgent,
    TriageResult,
    ExtractedEntities,
    Priority,
    Category,
    get_triage_agent
)


class TestExtractedEntities:
    """Tests for ExtractedEntities dataclass."""
    
    def test_default_values(self):
        """Test default entity values."""
        entities = ExtractedEntities()
        
        assert entities.problem_summary == ""
        assert entities.hostname is None
        assert entities.category == Category.OTHER
        assert entities.priority == Priority.MEDIUM
        assert entities.is_urgent is False
    
    def test_with_values(self):
        """Test entity with values."""
        entities = ExtractedEntities(
            hostname="srv-app01",
            ip_address="192.168.1.10",
            category=Category.INFRASTRUCTURE,
            priority=Priority.HIGH,
            is_urgent=True
        )
        
        assert entities.hostname == "srv-app01"
        assert entities.priority == Priority.HIGH
        assert entities.is_urgent is True


class TestTriageAgent:
    """Tests for TriageAgent class."""
    
    @pytest.fixture
    def agent(self):
        """Create a triage agent with mocked dependencies."""
        # Patch at module level before creating agent
        patcher1 = patch('src.agents.triage_agent.get_ollama_client')
        patcher2 = patch('src.agents.triage_agent.get_financial_client')
        
        mock_ollama = patcher1.start()
        mock_financial = patcher2.start()
        
        mock_ollama.return_value = Mock()
        mock_financial.return_value = Mock()
        
        agent = TriageAgent()
        
        yield agent
        
        patcher1.stop()
        patcher2.stop()
    
    def test_fallback_hostname_extraction(self, agent):
        """Test regex fallback for hostname extraction."""
        content = "O servidor srv-app01 está com problema de memória"
        entities = ExtractedEntities()
        
        result = agent._fallback_extraction(content, entities)
        
        assert result.hostname == "srv-app01"
    
    def test_fallback_ip_extraction(self, agent):
        """Test regex fallback for IP extraction."""
        content = "O servidor 192.168.1.50 não está respondendo"
        entities = ExtractedEntities()
        
        result = agent._fallback_extraction(content, entities)
        
        assert result.ip_address == "192.168.1.50"
    
    def test_fallback_service_extraction(self, agent):
        """Test regex fallback for service extraction."""
        content = "O serviço nginx está retornando erro 502"
        entities = ExtractedEntities()
        
        result = agent._fallback_extraction(content, entities)
        
        assert result.service_name.lower() == "nginx"
    
    def test_urgency_detection(self, agent):
        """Test urgency keyword detection."""
        content = "URGENTE: Sistema caiu e precisa de atenção imediata"
        entities = ExtractedEntities(priority=Priority.MEDIUM)
        
        result = agent._fallback_extraction(content, entities)
        
        assert result.is_urgent is True
        assert result.priority == Priority.HIGH
    
    def test_production_detection(self, agent):
        """Test production keyword detection."""
        content = "Servidor de produção com clientes afetados"
        entities = ExtractedEntities(priority=Priority.MEDIUM)
        
        result = agent._fallback_extraction(content, entities)
        
        assert result.affects_production is True
        assert result.priority == Priority.HIGH
    
    def test_recommend_tools_with_host(self, agent):
        """Test tool recommendation with hostname."""
        entities = ExtractedEntities(
            hostname="srv-db01",
            category=Category.DATABASE
        )
        tenant = Mock()
        tenant.id = "tenant-001"
        
        tools = agent._recommend_tools(entities, tenant)
        
        assert "zabbix_get_host_status" in tools
        assert "zabbix_get_problems" in tools
        assert "rag_search_manuals" in tools
    
    def test_build_reasoning(self, agent):
        """Test reasoning generation."""
        entities = ExtractedEntities(
            hostname="srv-app01",
            category=Category.INFRASTRUCTURE,
            priority=Priority.HIGH,
            is_urgent=True,
            affects_production=True,
            problem_summary="Servidor não responde"
        )
        tenant = Mock()
        tenant.name = "OESTEPAN"
        
        reasoning = agent._build_reasoning(entities, tenant)
        
        assert "OESTEPAN" in reasoning
        assert "infrastructure" in reasoning
        assert "high" in reasoning
        assert "URGÊNCIA" in reasoning
        assert "PRODUÇÃO" in reasoning
    
    @pytest.mark.asyncio
    async def test_process_ticket_without_tenant(self, agent):
        """Test ticket processing when tenant cannot be resolved."""
        agent._financial.get_tenant_by_email = AsyncMock(return_value=None)
        
        result = await agent.process_ticket(
            ticket_id="TKT-001",
            sender_email="unknown@unknowndomain.com",
            subject="Problema",
            body="Teste"
        )
        
        assert result.success is False
        assert "Tenant não identificado" in result.error


class TestTriageAgentSingleton:
    """Tests for singleton."""
    
    def test_singleton(self):
        """Test singleton returns same instance."""
        import src.agents.triage_agent as module
        module._triage_agent = None
        
        with patch('src.agents.triage_agent.get_ollama_client'), \
             patch('src.agents.triage_agent.get_financial_client'):
            
            agent1 = get_triage_agent()
            agent2 = get_triage_agent()
            
            assert agent1 is agent2