# FR: Fichier: test_node_services.py — Tests unitaires des services du client nœud
# EN: File: test_node_services.py — Unit tests for node client services
# ES: Archivo: test_node_services.py — Pruebas unitarias para los servicios del cliente nodo
# ZH: 文件: test_node_services.py — 节点客户端服务的单元测试

# Tests pour les services Node du client P2P O-Red
import pytest
import asyncio
import tempfile
import json
from pathlib import Path
from unittest.mock import Mock, AsyncMock, patch

# Import des modules à tester (adaptez selon l'organisation réelle)
try:
    from node_client.src.services.identity_service import IdentityService
    from node_client.src.services.network_service import NetworkService
    from node_client.src.services.ai_service import AIService
    from node_client.src.services.storage_service import StorageService
    from node_client.src.core.config import NodeConfig
except ImportError:
    # Modules pas encore créés, on définit des mocks pour les tests
    class IdentityService:
        pass
    class NetworkService:
        pass
    class AIService:
        pass
    class StorageService:
        pass
    class NodeConfig:
        pass

class TestIdentityService:
    """Tests pour le service d'identité O-RedID."""
    
    @pytest.fixture
    def temp_storage_dir(self):
        """Répertoire temporaire pour les tests."""
        with tempfile.TemporaryDirectory() as temp_dir:
            yield Path(temp_dir)
    
    @pytest.fixture
    def identity_service(self, temp_storage_dir):
        """Instance du service d'identité pour les tests."""
        config = Mock()
        config.storage_path = temp_storage_dir
        config.identity_file = temp_storage_dir / "identity.json"
        return IdentityService(config)
    
    def test_generate_identity(self, identity_service):
        """Test de génération d'identité."""
        # Mock pour éviter la vraie génération cryptographique
        with patch('cryptography.hazmat.primitives.asymmetric.rsa.generate_private_key') as mock_gen:
            mock_key = Mock()
            mock_gen.return_value = mock_key
            
            identity = identity_service.generate_identity()
            
            assert identity is not None
            assert 'node_id' in identity
            assert 'public_key' in identity
            assert 'private_key_path' in identity
    
    def test_save_and_load_identity(self, identity_service, temp_storage_dir):
        """Test de sauvegarde et chargement d'identité."""
        # Données de test
        test_identity = {
            "node_id": "test-node-123",
            "public_key": "test_public_key_data",
            "private_key_path": str(temp_storage_dir / "private_key.pem"),
            "created_at": "2024-01-01T00:00:00Z"
        }
        
        # Sauvegarder
        identity_service.save_identity(test_identity)
        
        # Charger
        loaded_identity = identity_service.load_identity()
        
        assert loaded_identity == test_identity
    
    def test_sign_and_verify_message(self, identity_service):
        """Test de signature et vérification de message."""
        with patch.object(identity_service, 'sign_message') as mock_sign, \
             patch.object(identity_service, 'verify_signature') as mock_verify:
            
            mock_sign.return_value = "mock_signature"
            mock_verify.return_value = True
            
            message = "test message"
            signature = identity_service.sign_message(message)
            is_valid = identity_service.verify_signature(message, signature, "public_key")
            
            assert signature == "mock_signature"
            assert is_valid is True

class TestNetworkService:
    """Tests pour le service réseau P2P."""
    
    @pytest.fixture
    def network_service(self):
        """Instance du service réseau pour les tests."""
        config = Mock()
        config.p2p_port = 8001
        config.max_connections = 10
        return NetworkService(config)
    
    @pytest.mark.asyncio
    async def test_start_server(self, network_service):
        """Test de démarrage du serveur P2P."""
        with patch('asyncio.start_server') as mock_start:
            mock_server = AsyncMock()
            mock_start.return_value = mock_server
            
            await network_service.start_server()
            
            mock_start.assert_called_once()
            assert network_service.server == mock_server
    
    @pytest.mark.asyncio
    async def test_connect_to_peer(self, network_service):
        """Test de connexion à un pair."""
        with patch('asyncio.open_connection') as mock_connect:
            mock_reader = AsyncMock()
            mock_writer = AsyncMock()
            mock_connect.return_value = (mock_reader, mock_writer)
            
            result = await network_service.connect_to_peer("192.168.1.100", 8001)
            
            assert result is True
            mock_connect.assert_called_once_with("192.168.1.100", 8001)
    
    @pytest.mark.asyncio
    async def test_send_message(self, network_service):
        """Test d'envoi de message."""
        # Mock d'un writer
        mock_writer = AsyncMock()
        network_service.connections = {"peer1": mock_writer}
        
        message = {"type": "ping", "data": "hello"}
        await network_service.send_message("peer1", message)
        
        mock_writer.write.assert_called_once()
        mock_writer.drain.assert_called_once()
    
    def test_add_peer(self, network_service):
        """Test d'ajout de pair."""
        peer_info = {
            "node_id": "peer1",
            "ip_address": "192.168.1.100",
            "port": 8001,
            "public_key": "peer_public_key"
        }
        
        network_service.add_peer(peer_info)
        
        assert "peer1" in network_service.peers
        assert network_service.peers["peer1"] == peer_info

class TestAIService:
    """Tests pour le service IA O-RedMind."""
    
    @pytest.fixture
    def ai_service(self):
        """Instance du service IA pour les tests."""
        config = Mock()
        config.ai_enabled = True
        config.max_compute_power = 50.0
        return AIService(config)
    
    @pytest.mark.asyncio
    async def test_process_ai_request(self, ai_service):
        """Test de traitement de requête IA."""
        request = {
            "request_id": "req-123",
            "model_type": "text_generation",
            "input_data": "Test prompt",
            "parameters": {"max_tokens": 100}
        }
        
        with patch.object(ai_service, '_run_inference') as mock_inference:
            mock_inference.return_value = {"output": "Generated text", "confidence": 0.95}
            
            result = await ai_service.process_ai_request(request)
            
            assert result["request_id"] == "req-123"
            assert "output" in result
            assert "processing_time" in result
    
    def test_check_resource_availability(self, ai_service):
        """Test de vérification des ressources disponibles."""
        with patch('psutil.cpu_percent') as mock_cpu, \
             patch('psutil.virtual_memory') as mock_memory:
            
            mock_cpu.return_value = 30.0
            mock_memory.return_value = Mock(percent=40.0)
            
            available = ai_service.check_resource_availability()
            
            assert available is True
    
    def test_estimate_processing_time(self, ai_service):
        """Test d'estimation du temps de traitement."""
        request = {
            "model_type": "text_generation",
            "input_size": 1000,
            "parameters": {"max_tokens": 500}
        }
        
        estimated_time = ai_service.estimate_processing_time(request)
        
        assert isinstance(estimated_time, (int, float))
        assert estimated_time > 0

class TestStorageService:
    """Tests pour le service de stockage distribué."""
    
    @pytest.fixture
    def temp_storage_dir(self):
        """Répertoire temporaire pour les tests."""
        with tempfile.TemporaryDirectory() as temp_dir:
            yield Path(temp_dir)
    
    @pytest.fixture
    def storage_service(self, temp_storage_dir):
        """Instance du service de stockage pour les tests."""
        config = Mock()
        config.storage_path = temp_storage_dir
        config.max_storage_size = 1000000000  # 1GB
        return StorageService(config)
    
    @pytest.mark.asyncio
    async def test_store_data(self, storage_service, temp_storage_dir):
        """Test de stockage de données."""
        data = b"test data content"
        metadata = {"content_type": "text/plain", "created_by": "test_user"}
        
        with patch.object(storage_service, '_calculate_hash') as mock_hash:
            mock_hash.return_value = "test_hash_123"
            
            stored_info = await storage_service.store_data(data, metadata)
            
            assert stored_info["hash"] == "test_hash_123"
            assert "file_path" in stored_info
            assert "size" in stored_info
    
    @pytest.mark.asyncio
    async def test_retrieve_data(self, storage_service, temp_storage_dir):
        """Test de récupération de données."""
        # Créer un fichier de test
        test_file = temp_storage_dir / "test_file.dat"
        test_content = b"test content"
        test_file.write_bytes(test_content)
        
        data = await storage_service.retrieve_data("test_hash")
        
        # Mock le comportement attendu
        with patch.object(storage_service, '_get_file_path') as mock_path:
            mock_path.return_value = test_file
            data = await storage_service.retrieve_data("test_hash")
            
            assert data == test_content
    
    def test_check_storage_space(self, storage_service):
        """Test de vérification de l'espace de stockage."""
        with patch('shutil.disk_usage') as mock_usage:
            mock_usage.return_value = (1000000000, 500000000, 500000000)  # total, used, free
            
            space_info = storage_service.check_storage_space()
            
            assert "total" in space_info
            assert "used" in space_info
            assert "free" in space_info
            assert "percentage_used" in space_info
    
    def test_cleanup_old_files(self, storage_service, temp_storage_dir):
        """Test de nettoyage des anciens fichiers."""
        # Créer des fichiers de test avec différentes dates
        old_file = temp_storage_dir / "old_file.dat"
        new_file = temp_storage_dir / "new_file.dat"
        
        old_file.write_bytes(b"old content")
        new_file.write_bytes(b"new content")
        
        with patch('time.time') as mock_time:
            mock_time.return_value = 1000000000  # Timestamp fixe
            
            cleaned_count = storage_service.cleanup_old_files(max_age_days=30)
            
            assert isinstance(cleaned_count, int)

class TestNodeIntegration:
    """Tests d'intégration pour le nœud complet."""
    
    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_node_startup_sequence(self):
        """Test de la séquence de démarrage du nœud."""
        with patch('node_client.src.main.IdentityService') as mock_identity, \
             patch('node_client.src.main.NetworkService') as mock_network, \
             patch('node_client.src.main.AIService') as mock_ai, \
             patch('node_client.src.main.StorageService') as mock_storage:
            
            # Mock des services
            mock_identity_instance = AsyncMock()
            mock_network_instance = AsyncMock()
            mock_ai_instance = AsyncMock()
            mock_storage_instance = AsyncMock()
            
            mock_identity.return_value = mock_identity_instance
            mock_network.return_value = mock_network_instance
            mock_ai.return_value = mock_ai_instance
            mock_storage.return_value = mock_storage_instance
            
            # Test de démarrage
            # from node_client.src.main import Node
            # node = Node()
            # await node.start()
            
            # Vérifier que tous les services sont initialisés
            # mock_identity.assert_called_once()
            # mock_network.assert_called_once()
            # mock_ai.assert_called_once()
            # mock_storage.assert_called_once()
    
    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_peer_discovery_and_connection(self):
        """Test de découverte et connexion aux pairs."""
        # Test d'intégration pour la découverte de pairs
        pass
    
    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_distributed_ai_computation(self):
        """Test de calcul IA distribué."""
        # Test d'intégration pour le calcul distribué
        pass

class TestPerformance:
    """Tests de performance pour le client nœud."""
    
    @pytest.mark.slow
    def test_concurrent_connections(self):
        """Test de connexions concurrentes."""
        # Test de performance avec de nombreuses connexions
        pass
    
    @pytest.mark.slow
    def test_large_data_transfer(self):
        """Test de transfert de gros volumes de données."""
        # Test de performance pour les gros transferts
        pass
    
    @pytest.mark.slow
    def test_ai_processing_throughput(self):
        """Test de débit de traitement IA."""
        # Test de performance pour le traitement IA
        pass

if __name__ == "__main__":
    pytest.main([__file__, "-v"])