import pytest
from unittest.mock import Mock, MagicMock
import os
from contextlib import asynccontextmanager

from src.naliiabot.bot.agent.agent import Agent, AgentConfig
from src.naliiabot.bot.factories.llm_factory import LLMFactory
from httpx import ASGITransport, AsyncClient
from fastapi import FastAPI
from langgraph.checkpoint.memory import MemorySaver
from langchain_core.messages import AIMessage
from naliiabot.bot.prompts.load_prompt import get_prompt_template
from naliiabot.bot.tools.naliia_tools import NaliiaTools
import naliiabotapi.api.dependencies as deps
from naliiabotapi.api.v1.endpoints.chat import router as chat_router
from naliiabotapi.api.v1.webhooks.chat_hook import router as chat_hook_router


@asynccontextmanager
async def test_lifespan(app: FastAPI):
    """Test lifespan that uses in-memory checkpointer instead of PostgreSQL."""
    # Use in-memory checkpointer for tests
    checkpointer = MemorySaver()
    
    # Use a mock model for tests to avoid needing API keys
    # The mock needs to return proper AIMessage objects
    mock_model = MagicMock()
    
    def mock_invoke(*args, **kwargs):
        """Mock invoke that returns a proper AIMessage."""
        return AIMessage(content="This is a test response from the mock model.")
    
    mock_model.invoke = mock_invoke
    mock_model.bind_tools = Mock(return_value=mock_model)
    
    naliia_prompt = get_prompt_template("NALIIA_PROMPT")
    naliia_tools = NaliiaTools().get_tools()
    config = AgentConfig(system_prompt=naliia_prompt)
    
    deps.agent_instance = Agent(
        model=mock_model,
        config=config,
        checkpointer=checkpointer,
        tools=naliia_tools,
    )
    
    yield
    
    # Cleanup
    deps.agent_instance = None


@pytest.fixture(scope="session")
def test_app():
    """Create a test FastAPI app with in-memory dependencies."""
    app = FastAPI(
        title="NaliiaBot API - Test",
        description="Test API for NaliiaBot",
        version="1.0.0",
        root_path="/agent/api",
        lifespan=test_lifespan,
    )
    
    app.include_router(chat_router)
    app.include_router(chat_hook_router)
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    @app.get("/health")
    def health_check():
        return {"status": "ok"}
    
    return app


@pytest.fixture(scope="function")
async def async_client(test_app):
    """Fixture para un cliente HTTP asíncrono."""

    async with AsyncClient(
        transport=ASGITransport(app=test_app),
        base_url="http://localhost:8010"
    ) as client:

        yield client


@pytest.fixture
def mock_tool():
    """Mock de herramienta."""
    tool = Mock()
    tool.name = "calculator"
    tool.invoke = Mock(return_value="42")
    return tool


@pytest.fixture
def mock_model():
    """Mock de modelo LLM con interfaz completa."""
    model = Mock()
    model.bind_tools = Mock(return_value=model)
    return model


@pytest.fixture
def default_config():
    """Configuración de test predecible."""
    return AgentConfig(
        system_prompt="Test prompt",
        max_iterations=5,
        timeout_seconds=10.0
    )


@pytest.fixture
def agent(mock_model, default_config):
    """Agente básico sin herramientas."""
    return Agent(model=mock_model, config=default_config)


@pytest.fixture
def agent_with_tool(mock_model, default_config, mock_tool):
    """Agente con una herramienta mock."""
    return Agent(
        model=mock_model,
        config=default_config,
        tools=[mock_tool]
    )


@pytest.fixture
def anthropic_model():
    llmFactory = LLMFactory("anthropic")
    anthropic_model = llmFactory.get_model()

    return anthropic_model


@pytest.fixture
def send_message_payload():
    """Payload de ejemplo para enviar mensajes al webhook."""
    return {
        "event": "messages.upsert",
        "instance": "ALEJANDRO AYALA",
        "data": {
            "key": {
                "remoteJid": "5512992544490@s.whatsapp.net",
                "remoteJidAlt": "5512992544490@s.whatsapp.net",
                "fromMe": False, "id": "AC4367597BDC50537133B9C8848B2E62",
                "participant": "", "addressingMode": "lid"
            },
            "pushName": "Alejandro",
            "status": "DELIVERY_ACK",
            "message": {
                "conversation": "Hola",
                "messageContextInfo": {
                    "threadId": [],
                    "deviceListMetadata": {
                        "senderKeyIndexes": [],
                        "recipientKeyIndexes": [],
                        "senderKeyHash": {
                            "0": 154,
                            "1": 106,
                            "2": 69,
                            "3": 189,
                            "4": 90,
                            "5": 105,
                            "6": 172,
                            "7": 243,
                            "8": 27,
                            "9": 98
                        },
                        "senderTimestamp": {
                            "low": 1772156772,
                            "high": 0,
                            "unsigned": "true"
                        },
                        "recipientKeyHash": {
                            "0": 16,
                            "1": 98,
                            "2": 75,
                            "3": 100,
                            "4": 131,
                            "5": 43,
                            "6": 24,
                            "7": 225,
                            "8": 244,
                            "9": 126
                        },
                        "recipientTimestamp": {
                            "low": 1772155597,
                            "high": 0,
                            "unsigned": True
                        }
                    },
                    "deviceListMetadataVersion": 2,
                    "messageSecret": {
                        "0": 100,
                        "1": 47,
                        "2": 112,
                        "3": 133,
                        "4": 255,
                        "5": 156,
                        "6": 129,
                        "7": 57,
                        "8": 239,
                        "9": 219,
                        "10": 74,
                        "11": 171,
                        "12": 212,
                        "13": 150,
                        "14": 112,
                        "15": 83,
                        "16": 123,
                        "17": 78,
                        "18": 189,
                        "19": 13,
                        "20": 51,
                        "21": 133,
                        "22": 129,
                        "23": 6,
                        "24": 197,
                        "25": 119,
                        "26": 197,
                        "27": 56,
                        "28": 87,
                        "29": 176,
                        "30": 135,
                        "31": 62
                    }}},
            "messageType": "conversation",
            "messageTimestamp": 1772168493,
            "instanceId": "75a877f1-d772-422b-a6f1-6ac470af5663",
            "source": "android"
        },
        "destination": "http://192.168.58.110:8010/webhook",
        "date_time": "2026-02-27T02:01:34.178Z",
        "sender": "573016859278@s.whatsapp.net",
        "server_url": "http://localhost:8080",
        "apikey": "98B6B820AFC3-4544-9A4C-011B0719C2D1"
    }