"""
Backend Poetry pour GestVenv v1.1 - Implémentation future
"""

import json
import logging
import re
import subprocess
import time
from datetime import datetime
from pathlib import Path
from typing import List, Optional

from .base import PackageBackend, BackendCapabilities
from ..core.models import PackageInfo, InstallResult

logger = logging.getLogger(__name__)


class PoetryBackend(PackageBackend):
    """Backend Poetry (implémentation préparatoire)"""
    
    def __init__(self):
        super().__init__()
        self._name = "poetry"
        
    def _init_capabilities(self) -> BackendCapabilities:
        """Initialise les capacités Poetry"""
        return BackendCapabilities(
            supports_lock_files=True,
            supports_dependency_groups=True,
            supports_parallel_install=False,
            supports_editable_installs=True,
            supports_workspace=False,
            supports_pyproject_sync=True,
            supported_formats=["pyproject.toml", "poetry.lock"],
            max_parallel_jobs=1
        )
        
    def _check_availability(self) -> bool:
        """Vérifie la disponibilité de Poetry"""
        try:
            result = subprocess.run(
                ["poetry", "--version"],
                capture_output=True,
                text=True,
                timeout=10
            )
            return result.returncode == 0
        except (subprocess.TimeoutExpired, FileNotFoundError):
            return False
            
    def _get_version(self) -> Optional[str]:
        """Récupère la version Poetry"""
        try:
            result = subprocess.run(
                ["poetry", "--version"],
                capture_output=True,
                text=True,
                timeout=10
            )
            if result.returncode == 0:
                match = re.search(r'Poetry .*?(\d+\.\d+\.\d+)', result.stdout)
                return match.group(1) if match else None
        except (subprocess.TimeoutExpired, FileNotFoundError):
            pass
        return None
        
    def create_environment(self, path: Path, python_version: str) -> bool:
        """Création avec Poetry (non implémenté)"""
        # Poetry gère les environnements différemment
        # Implémentation future
        logger.warning("Poetry backend: create_environment pas encore implémenté")
        return False
        
    def install_package(self, env_path: Path, package: str, **kwargs) -> InstallResult:
        """Installation avec Poetry (basique)"""
        start_time = time.time()
        
        try:
            # Implémentation basique pour la compatibilité
            logger.warning("Poetry backend: fonctionnalité limitée en v1.1")
            
            return InstallResult(
                success=False,
                message="Backend Poetry en cours de développement",
                backend_used="poetry",
                execution_time=time.time() - start_time
            )
            
        except Exception as e:
            return InstallResult(
                success=False,
                message=f"Erreur Poetry: {e}",
                backend_used="poetry",
                execution_time=time.time() - start_time
            )
            
    def uninstall_package(self, env_path: Path, package: str) -> bool:
        """Désinstalle un package"""
        logger.warning("Poetry backend: uninstall_package pas encore implémenté")
        return False
        
    def update_package(self, env_path: Path, package: str) -> bool:
        """Met à jour un package"""
        logger.warning("Poetry backend: update_package pas encore implémenté")
        return False
        
    def list_packages(self, env_path: Path) -> List[PackageInfo]:
        """Liste les packages installés"""
        logger.warning("Poetry backend: list_packages pas encore implémenté")
        return []
        
    def sync_poetry_project(self, env_path: Path) -> bool:
        """Synchronise un projet Poetry (futur)"""
        try:
            # Commande poetry install dans le répertoire du projet
            result = subprocess.run(
                ["poetry", "install"],
                cwd=env_path.parent,
                capture_output=True,
                text=True,
                timeout=300
            )
            
            return result.returncode == 0
            
        except Exception as e:
            logger.error(f"Erreur sync Poetry: {e}")
            return False
            
    def manage_poetry_groups(self, env_path: Path, groups: List[str]) -> bool:
        """Gestion des groupes Poetry (futur)"""
        try:
            if not groups:
                return True
                
            cmd = ["poetry", "install"]
            for group in groups:
                cmd.extend(["--with", group])
                
            result = subprocess.run(
                cmd,
                cwd=env_path.parent,
                capture_output=True,
                text=True,
                timeout=300
            )
            
            return result.returncode == 0
            
        except Exception as e:
            logger.error(f"Erreur gestion groupes Poetry: {e}")
            return False
            
    def get_performance_score(self) -> int:
        """Score de performance Poetry"""
        return 7  # Bon mais plus lent qu'uv