import asyncio
import json
import pytest
from unittest.mock import MagicMock, patch, AsyncMock
from src import ai_client
from src import mcp_client
from src import models

@pytest.mark.asyncio
async def test_external_mcp_hitl_approval():
    # 1. Setup mock manager and server
    mock_manager = mcp_client.ExternalMCPManager()
    mock_server = AsyncMock()
    mock_server.name = "test-server"
    mock_server.tools = {"ext_tool": {"name": "ext_tool", "description": "desc"}}
    mock_server.call_tool.return_value = "Success"
    mock_manager.servers["test-server"] = mock_server
    
    with patch("src.mcp_client.get_external_mcp_manager", return_value=mock_manager):
        # 2. Setup ai_client callbacks
        mock_pre_tool = MagicMock(return_value="Approved")
        ai_client.confirm_and_run_callback = mock_pre_tool
        
        # 3. Call _execute_single_tool_call_async
        name = "ext_tool"
        args = {"arg1": "val1"}
        call_id = "call_123"
        base_dir = "."
        
        # We need to pass the callback to the function
        name, cid, out, orig_name = await ai_client._execute_single_tool_call_async(
            name, args, call_id, base_dir, mock_pre_tool, None, 0
        )
        
        # 4. Assertions
        assert out == "Success"
        mock_pre_tool.assert_called_once()
        # Check description contains EXTERNAL MCP
        call_args = mock_pre_tool.call_args[0]
        assert "EXTERNAL MCP TOOL: ext_tool" in call_args[0]
        assert "arg1: 'val1'" in call_args[0]

@pytest.mark.asyncio
async def test_external_mcp_hitl_rejection():
    mock_manager = mcp_client.ExternalMCPManager()
    mock_server = AsyncMock()
    mock_server.name = "test-server"
    mock_server.tools = {"ext_tool": {"name": "ext_tool"}}
    mock_manager.servers["test-server"] = mock_server
    
    with patch("src.mcp_client.get_external_mcp_manager", return_value=mock_manager):
        mock_pre_tool = MagicMock(return_value=None) # Rejection
        
        name = "ext_tool"
        args = {"arg1": "val1"}
        
        name, cid, out, orig_name = await ai_client._execute_single_tool_call_async(
            name, args, "id", ".", mock_pre_tool, None, 0
        )
        
        assert out == "USER REJECTED: tool execution cancelled"
        mock_server.call_tool.assert_not_called()