"""Tests for microagent loading in runtime."""

import os
import tempfile
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
from conftest import (
    _close_test_runtime,
    _load_runtime,
)

from openhands.core.config import MCPConfig
from openhands.core.config.mcp_config import MCPStdioServerConfig
from openhands.mcp.utils import add_mcp_tools_to_agent
from openhands.microagent.microagent import (
    BaseMicroagent,
    KnowledgeMicroagent,
    RepoMicroagent,
    TaskMicroagent,
)
from openhands.microagent.types import MicroagentType


def _create_test_microagents(test_dir: str):
    """Create test microagent files in the given directory."""
    microagents_dir = Path(test_dir) / '.openhands' / 'microagents'
    microagents_dir.mkdir(parents=True, exist_ok=True)

    # Create test knowledge agent
    knowledge_dir = microagents_dir / 'knowledge'
    knowledge_dir.mkdir(exist_ok=True)
    knowledge_agent = """---
name: test_knowledge_agent
type: knowledge
version: 1.0.0
agent: CodeActAgent
triggers:
  - test
  - pytest
---

# Test Guidelines

Testing best practices and guidelines.
"""
    (knowledge_dir / 'knowledge.md').write_text(knowledge_agent)

    # Create test repo agent
    repo_agent = """---
name: test_repo_agent
type: repo
version: 1.0.0
agent: CodeActAgent
---

# Test Repository Agent

Repository-specific test instructions.
"""
    (microagents_dir / 'repo.md').write_text(repo_agent)

    # Create legacy repo instructions
    legacy_instructions = """# Legacy Instructions

These are legacy repository instructions.
"""
    (Path(test_dir) / '.openhands_instructions').write_text(legacy_instructions)


def test_load_microagents_with_trailing_slashes(
    temp_dir, runtime_cls, run_as_openhands
):
    """Test loading microagents when directory paths have trailing slashes."""
    # Create test files
    _create_test_microagents(temp_dir)
    runtime, config = _load_runtime(temp_dir, runtime_cls, run_as_openhands)
    try:
        # Load microagents
        loaded_agents = runtime.get_microagents_from_selected_repo(None)

        # Verify all agents are loaded
        knowledge_agents = [
            a for a in loaded_agents if isinstance(a, KnowledgeMicroagent)
        ]
        repo_agents = [a for a in loaded_agents if isinstance(a, RepoMicroagent)]

        # Check knowledge agents
        assert len(knowledge_agents) == 1
        agent = knowledge_agents[0]
        assert agent.name == 'knowledge/knowledge'
        assert 'test' in agent.triggers
        assert 'pytest' in agent.triggers

        # Check repo agents (including legacy)
        assert len(repo_agents) == 2  # repo.md + .openhands_instructions
        repo_names = {a.name for a in repo_agents}
        assert 'repo' in repo_names
        assert 'repo_legacy' in repo_names

    finally:
        _close_test_runtime(runtime)


def test_load_microagents_with_selected_repo(temp_dir, runtime_cls, run_as_openhands):
    """Test loading microagents from a selected repository."""
    # Create test files in a repository-like structure
    repo_dir = Path(temp_dir) / 'OpenHands'
    repo_dir.mkdir(parents=True)
    _create_test_microagents(str(repo_dir))

    runtime, config = _load_runtime(temp_dir, runtime_cls, run_as_openhands)
    try:
        # Load microagents with selected repository
        loaded_agents = runtime.get_microagents_from_selected_repo(
            'All-Hands-AI/OpenHands'
        )

        # Verify all agents are loaded
        knowledge_agents = [
            a for a in loaded_agents if isinstance(a, KnowledgeMicroagent)
        ]
        repo_agents = [a for a in loaded_agents if isinstance(a, RepoMicroagent)]

        # Check knowledge agents
        assert len(knowledge_agents) == 1
        agent = knowledge_agents[0]
        assert agent.name == 'knowledge/knowledge'
        assert 'test' in agent.triggers
        assert 'pytest' in agent.triggers

        # Check repo agents (including legacy)
        assert len(repo_agents) == 2  # repo.md + .openhands_instructions
        repo_names = {a.name for a in repo_agents}
        assert 'repo' in repo_names
        assert 'repo_legacy' in repo_names

    finally:
        _close_test_runtime(runtime)


def test_load_microagents_with_missing_files(temp_dir, runtime_cls, run_as_openhands):
    """Test loading microagents when some files are missing."""
    # Create only repo.md, no other files
    microagents_dir = Path(temp_dir) / '.openhands' / 'microagents'
    microagents_dir.mkdir(parents=True, exist_ok=True)

    repo_agent = """---
name: test_repo_agent
type: repo
version: 1.0.0
agent: CodeActAgent
---

# Test Repository Agent

Repository-specific test instructions.
"""
    (microagents_dir / 'repo.md').write_text(repo_agent)

    runtime, config = _load_runtime(temp_dir, runtime_cls, run_as_openhands)
    try:
        # Load microagents
        loaded_agents = runtime.get_microagents_from_selected_repo(None)

        # Verify only repo agent is loaded
        knowledge_agents = [
            a for a in loaded_agents if isinstance(a, KnowledgeMicroagent)
        ]
        repo_agents = [a for a in loaded_agents if isinstance(a, RepoMicroagent)]

        assert len(knowledge_agents) == 0
        assert len(repo_agents) == 1

        agent = repo_agents[0]
        assert agent.name == 'repo'

    finally:
        _close_test_runtime(runtime)


def test_task_microagent_creation():
    """Test that a TaskMicroagent is created correctly."""
    content = """---
name: test_task
version: 1.0.0
author: openhands
agent: CodeActAgent
triggers:
- /test_task
inputs:
  - name: TEST_VAR
    description: "Test variable"
---

This is a test task microagent with a variable: ${test_var}.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, TaskMicroagent)
        assert agent.type == MicroagentType.TASK
        assert agent.name == 'test_task'
        assert '/test_task' in agent.triggers
        assert "If the user didn't provide any of these variables" in agent.content


def test_task_microagent_variable_extraction():
    """Test that variables are correctly extracted from the content."""
    content = """---
name: test_task
version: 1.0.0
author: openhands
agent: CodeActAgent
triggers:
- /test_task
inputs:
  - name: var1
    description: "Variable 1"
---

This is a test with variables: ${var1}, ${var2}, and ${var3}.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, TaskMicroagent)
        variables = agent.extract_variables(agent.content)
        assert set(variables) == {'var1', 'var2', 'var3'}
        assert agent.requires_user_input()


def test_knowledge_microagent_no_prompt():
    """Test that a regular KnowledgeMicroagent doesn't get the prompt."""
    content = """---
name: test_knowledge
version: 1.0.0
author: openhands
agent: CodeActAgent
triggers:
- test_knowledge
---

This is a test knowledge microagent.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, KnowledgeMicroagent)
        assert agent.type == MicroagentType.KNOWLEDGE
        assert "If the user didn't provide any of these variables" not in agent.content


def test_task_microagent_trigger_addition():
    """Test that a trigger is added if not present."""
    content = """---
name: test_task
version: 1.0.0
author: openhands
agent: CodeActAgent
inputs:
  - name: TEST_VAR
    description: "Test variable"
---

This is a test task microagent.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, TaskMicroagent)
        assert '/test_task' in agent.triggers


def test_task_microagent_no_duplicate_trigger():
    """Test that a trigger is not duplicated if already present."""
    content = """---
name: test_task
version: 1.0.0
author: openhands
agent: CodeActAgent
triggers:
- /test_task
- another_trigger
inputs:
  - name: TEST_VAR
    description: "Test variable"
---

This is a test task microagent.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, TaskMicroagent)
        assert agent.triggers.count('/test_task') == 1  # No duplicates
        assert len(agent.triggers) == 2
        assert 'another_trigger' in agent.triggers
        assert '/test_task' in agent.triggers


def test_task_microagent_match_trigger():
    """Test that a task microagent matches its trigger correctly."""
    content = """---
name: test_task
version: 1.0.0
author: openhands
agent: CodeActAgent
triggers:
- /test_task
inputs:
  - name: TEST_VAR
    description: "Test variable"
---

This is a test task microagent.
"""

    with tempfile.NamedTemporaryFile(suffix='.md') as f:
        f.write(content.encode())
        f.flush()

        agent = BaseMicroagent.load(f.name)

        assert isinstance(agent, TaskMicroagent)
        assert agent.match_trigger('/test_task') == '/test_task'
        assert agent.match_trigger('  /test_task  ') == '/test_task'
        assert agent.match_trigger('This contains /test_task') == '/test_task'
        assert agent.match_trigger('/other_task') is None


def test_default_tools_microagent_exists():
    """Test that the default-tools microagent exists in the global microagents directory."""
    # Get the path to the global microagents directory
    import openhands

    project_root = os.path.dirname(openhands.__file__)
    parent_dir = os.path.dirname(project_root)
    microagents_dir = os.path.join(parent_dir, 'microagents')

    # Check that the default-tools.md file exists
    default_tools_path = os.path.join(microagents_dir, 'default-tools.md')
    assert os.path.exists(default_tools_path), (
        f'default-tools.md not found at {default_tools_path}'
    )

    # Read the file and check its content
    with open(default_tools_path, 'r') as f:
        content = f.read()

    # Verify it's a repo microagent (always activated)
    assert 'type: repo' in content, 'default-tools.md should be a repo microagent'

    # Verify it has the fetch tool configured
    assert 'name: "fetch"' in content, 'default-tools.md should have a fetch tool'
    assert 'command: "uvx"' in content, 'default-tools.md should use uvx command'
    assert 'args: ["mcp-server-fetch"]' in content, (
        'default-tools.md should use mcp-server-fetch'
    )


@pytest.mark.asyncio
async def test_add_mcp_tools_from_microagents():
    """Test that add_mcp_tools_to_agent adds tools from microagents."""
    # Import ActionExecutionClient for mocking

    from openhands.core.config.openhands_config import OpenHandsConfig
    from openhands.runtime.impl.action_execution.action_execution_client import (
        ActionExecutionClient,
    )

    # Create mock objects
    mock_agent = MagicMock()
    mock_runtime = MagicMock(spec=ActionExecutionClient)
    mock_memory = MagicMock()
    mock_mcp_config = MCPConfig()

    # Create a mock OpenHandsConfig with the MCP config
    mock_app_config = OpenHandsConfig(mcp=mock_mcp_config, search_api_key=None)

    # Configure the mock memory to return a microagent MCP config
    mock_stdio_server = MCPStdioServerConfig(
        name='test-tool', command='test-command', args=['test-arg1', 'test-arg2']
    )
    mock_microagent_mcp_config = MCPConfig(stdio_servers=[mock_stdio_server])
    mock_memory.get_microagent_mcp_tools.return_value = [mock_microagent_mcp_config]

    # Configure the mock runtime
    mock_runtime.runtime_initialized = True
    mock_runtime.get_mcp_config.return_value = mock_microagent_mcp_config

    # Mock the fetch_mcp_tools_from_config function to return a mock tool
    mock_tool = {
        'type': 'function',
        'function': {
            'name': 'test-tool',
            'description': 'Test tool description',
            'parameters': {},
        },
    }

    with patch(
        'openhands.mcp.utils.fetch_mcp_tools_from_config',
        new=AsyncMock(return_value=[mock_tool]),
    ):
        # Call the function with the OpenHandsConfig instead of MCPConfig
        await add_mcp_tools_to_agent(
            mock_agent, mock_runtime, mock_memory, mock_app_config
        )

        # Verify that the memory's get_microagent_mcp_tools was called
        mock_memory.get_microagent_mcp_tools.assert_called_once()

        # Verify that the runtime's get_mcp_config was called with the extra stdio servers
        mock_runtime.get_mcp_config.assert_called_once()
        args, kwargs = mock_runtime.get_mcp_config.call_args
        assert len(args) == 1
        assert len(args[0]) == 1
        assert args[0][0].name == 'test-tool'

        # Verify that the agent's set_mcp_tools was called with the mock tool
        mock_agent.set_mcp_tools.assert_called_once_with([mock_tool])