"""
Tests for agent communication protocol.
"""

import pytest

from src.agents.protocol import (
    AgentError,
    AgentRequest,
    AgentResponse,
    AgentTimeoutError,
    AgentUnavailableError,
    CoordinationResult,
    DelegationIntent,
    DelegationReason,
    ToolCallRecord,
)


@pytest.mark.unit
class TestAgentRequest:
    """Tests for AgentRequest model."""

    def test_basic_request(self):
        """Test creating a basic agent request."""
        request = AgentRequest(task="Find information about Docker")

        assert request.task == "Find information about Docker"
        assert request.context == ""
        assert request.timeout_seconds == 60

    def test_request_with_context(self):
        """Test request with additional context."""
        request = AgentRequest(
            task="Find Docker networking docs",
            context="User is setting up a homelab",
            delegation_reason=DelegationReason.DOMAIN_EXPERTISE,
        )

        assert request.task == "Find Docker networking docs"
        assert request.context == "User is setting up a homelab"
        assert request.delegation_reason == DelegationReason.DOMAIN_EXPERTISE

    def test_request_serialization(self):
        """Test request can be serialized to dict."""
        request = AgentRequest(
            task="Research task",
            context="Some context",
        )

        data = request.model_dump()

        assert data["task"] == "Research task"
        assert data["context"] == "Some context"


@pytest.mark.unit
class TestAgentResponse:
    """Tests for AgentResponse model."""

    def test_successful_response(self):
        """Test creating a successful response."""
        response = AgentResponse(
            success=True,
            result="Here are the findings...",
            reasoning="Searched wiki and found relevant docs",
            duration_ms=1500,
        )

        assert response.success is True
        assert response.result == "Here are the findings..."
        assert response.reasoning == "Searched wiki and found relevant docs"
        assert response.duration_ms == 1500
        assert response.error_message is None

    def test_failed_response(self):
        """Test creating a failed response."""
        response = AgentResponse(
            success=False,
            result="",
            error_message="Connection timeout",
            duration_ms=30000,
        )

        assert response.success is False
        assert response.result == ""
        assert response.error_message == "Connection timeout"

    def test_response_with_tool_calls(self):
        """Test response tracking tool calls."""
        tool_call = ToolCallRecord(
            tool_name="hybrid_search",
            arguments={"query": "Docker networking"},
            result="Found 5 results",
            duration_ms=500,
        )

        response = AgentResponse(
            success=True,
            result="Based on search...",
            tool_calls=[tool_call],
        )

        assert len(response.tool_calls) == 1
        assert response.tool_calls[0].tool_name == "hybrid_search"


@pytest.mark.unit
class TestDelegationIntent:
    """Tests for DelegationIntent model."""

    def test_basic_intent(self):
        """Test creating a basic delegation intent."""
        intent = DelegationIntent(
            target_agent="librarian",
            task="Research Docker networking",
            reason=DelegationReason.DOMAIN_EXPERTISE,
            expected_outcome="Documentation and examples",
        )

        assert intent.target_agent == "librarian"
        assert intent.task == "Research Docker networking"
        assert intent.reason == DelegationReason.DOMAIN_EXPERTISE
        assert intent.priority == 1  # Default

    def test_intent_with_priority(self):
        """Test intent with custom priority."""
        intent = DelegationIntent(
            target_agent="librarian",
            task="Urgent research",
            reason=DelegationReason.RESOURCE_EFFICIENCY,
            expected_outcome="Quick answer",
            priority=1,
        )

        assert intent.priority == 1


@pytest.mark.unit
class TestDelegationReason:
    """Tests for DelegationReason enum."""

    def test_all_reasons_have_values(self):
        """Test all delegation reasons are defined."""
        reasons = list(DelegationReason)

        assert DelegationReason.DOMAIN_EXPERTISE in reasons
        assert DelegationReason.TOOL_ACCESS in reasons
        assert DelegationReason.RESOURCE_EFFICIENCY in reasons
        assert DelegationReason.USER_PREFERENCE in reasons


@pytest.mark.unit
class TestCoordinationResult:
    """Tests for CoordinationResult model."""

    def test_single_agent_result(self):
        """Test coordination with single agent."""
        agent_response = AgentResponse(
            success=True,
            result="Research findings",
            duration_ms=1000,
        )

        intent = DelegationIntent(
            target_agent="librarian",
            task="Research task",
            reason=DelegationReason.DOMAIN_EXPERTISE,
            expected_outcome="Findings",
        )

        result = CoordinationResult(
            final_response="Research findings",
            agent_responses={"librarian": agent_response},
            delegation_intents=[intent],
            total_duration_ms=1200,
            agents_consulted=["librarian"],
        )

        assert result.final_response == "Research findings"
        assert len(result.agent_responses) == 1
        assert result.agents_consulted == ["librarian"]

    def test_empty_result(self):
        """Test coordination with no delegations."""
        result = CoordinationResult(
            final_response="",
            agent_responses={},
            delegation_intents=[],
            total_duration_ms=0,
            agents_consulted=[],
        )

        assert result.final_response == ""
        assert len(result.agents_consulted) == 0


@pytest.mark.unit
class TestAgentErrors:
    """Tests for agent error types."""

    def test_agent_error(self):
        """Test base AgentError."""
        error = AgentError("Something went wrong")

        assert "Something went wrong" in str(error)
        assert error.agent_name == "unknown"

    def test_agent_timeout_error(self):
        """Test AgentTimeoutError."""
        error = AgentTimeoutError(
            "Timed out after 60s",
            agent_name="librarian",
        )

        assert "Timed out" in str(error)
        assert error.agent_name == "librarian"

    def test_agent_unavailable_error(self):
        """Test AgentUnavailableError."""
        error = AgentUnavailableError(
            "Agent not registered",
            agent_name="unknown_agent",
        )

        assert "not registered" in str(error)
        assert error.agent_name == "unknown_agent"


@pytest.mark.unit
class TestToolCallRecord:
    """Tests for ToolCallRecord model."""

    def test_tool_call_record(self):
        """Test creating a tool call record."""
        record = ToolCallRecord(
            tool_name="semantic_search",
            arguments={"query": "networking concepts", "limit": 10},
            result="Found 10 relevant documents",
            duration_ms=250,
        )

        assert record.tool_name == "semantic_search"
        assert record.arguments["query"] == "networking concepts"
        assert record.duration_ms == 250

    def test_tool_call_with_empty_result(self):
        """Test tool call with empty result."""
        record = ToolCallRecord(
            tool_name="query_graph",
            arguments={"cypher": "MATCH (n) RETURN n"},
            result="",
            duration_ms=100,
        )

        assert record.result == ""