"""
Tests for Lorem Tester agent.
"""

import pytest

from src.agents.lorem_tester import LoremTesterAgent
from src.core.exceptions import (
    APIError,
    ContextLengthError,
    RateLimitError,
)


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_basic_response():
    """Test basic lorem tester response without reasoning or tools."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "Hello"}]

    items = []
    async for item in agent.generate_response(messages):
        items.append(item)

    # Should have at least one message item
    assert len(items) >= 1

    # Last item should be message
    last_item = items[-1]
    assert last_item.type == "message"
    assert last_item.data["role"] == "assistant"
    assert last_item.data["content"][0]["type"] == "output_text"
    assert len(last_item.data["content"][0]["text"]) > 0


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_with_reasoning():
    """Test lorem tester with reasoning enabled."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "Explain something"}]
    reasoning = {"summary": "auto", "effort": "medium"}

    items = []
    async for item in agent.generate_response(messages, reasoning=reasoning):
        items.append(item)

    # Should have reasoning item and message item
    assert len(items) >= 2

    # First item should be reasoning
    reasoning_item = items[0]
    assert reasoning_item.type == "reasoning"
    assert "summary" in reasoning_item.data
    assert isinstance(reasoning_item.data["summary"], list)
    assert len(reasoning_item.data["summary"]) > 0

    # Last item should be message
    message_item = items[-1]
    assert message_item.type == "message"


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_reasoning_effort_levels():
    """Test different reasoning effort levels."""
    agent = LoremTesterAgent()
    messages = [{"role": "user", "content": "Test"}]

    # Test different effort levels
    efforts = ["minimal", "low", "medium", "high", "xhigh"]

    for effort in efforts:
        reasoning = {"summary": "auto", "effort": effort}

        items = []
        async for item in agent.generate_response(messages, reasoning=reasoning):
            if item.type == "reasoning":
                items.append(item)

        # Should have reasoning item
        assert len(items) >= 1
        reasoning_item = items[0]
        assert reasoning_item.type == "reasoning"


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_with_tools():
    """Test lorem tester with tools (may or may not call them)."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "Use a tool"}]
    tools = [
        {"name": "search_knowledge", "description": "Search knowledge base"},
        {"name": "calculate", "description": "Do math"},
    ]

    items = []
    async for item in agent.generate_response(messages, tools=tools):
        items.append(item)

    # Should have at least message item
    # May have function_call items (randomized)
    assert len(items) >= 1

    # Check item types
    for item in items:
        assert item.type in ["reasoning", "function_call", "message"]


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_capabilities():
    """Test lorem tester capabilities."""
    agent = LoremTesterAgent()

    assert await agent.supports_tools() is True
    assert await agent.supports_reasoning() is True

    capabilities = await agent.get_capabilities()
    assert capabilities["streaming"] is True
    assert capabilities["reasoning"] is True
    assert capabilities["tools"] is True


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_rate_limit_trigger():
    """Test rate limit error trigger."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "trigger_rate_limit"}]

    with pytest.raises(RateLimitError) as exc_info:
        async for _item in agent.generate_response(messages):
            pass

    assert "rate limit" in str(exc_info.value).lower()


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_context_overflow_trigger():
    """Test context length error trigger."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "trigger_context_overflow"}]

    with pytest.raises(ContextLengthError) as exc_info:
        async for _item in agent.generate_response(messages):
            pass

    assert "context" in str(exc_info.value).lower()


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_invalid_tool_trigger():
    """Test invalid tool error trigger."""
    agent = LoremTesterAgent()

    messages = [{"role": "user", "content": "trigger_invalid_tool"}]

    with pytest.raises(APIError) as exc_info:
        async for _item in agent.generate_response(messages):
            pass

    assert "tool" in str(exc_info.value).lower()


@pytest.mark.unit
@pytest.mark.asyncio
async def test_lorem_tester_temperature_variation():
    """Test temperature affects response variety."""
    agent = LoremTesterAgent()
    messages = [{"role": "user", "content": "Test"}]

    # Low temperature
    items_low = []
    async for item in agent.generate_response(messages, temperature=0.1):
        if item.type == "message":
            items_low.append(item)

    # High temperature
    items_high = []
    async for item in agent.generate_response(messages, temperature=1.5):
        if item.type == "message":
            items_high.append(item)

    # Both should have responses
    assert len(items_low) >= 1
    assert len(items_high) >= 1