"""
Configuration management for Android XML Translation Tool
"""

import os
import sys
import yaml
from pathlib import Path
from typing import Dict, List, Optional, Any


class Config:
    """Configuration loader and validator"""
    
    def __init__(self, config_path: str = "config.yaml"):
        self.config_path = config_path
        self.data = self._load_config()
        if self.data is not None:  # Only validate if data was loaded
            self._validate_config()
    
    def _load_config(self) -> Dict[str, Any]:
        """Load configuration from YAML file"""
        try:
            with open(self.config_path, 'r', encoding='utf-8') as f:
                return yaml.safe_load(f)
        except FileNotFoundError:
            print(f"Configuration file {self.config_path} not found!")
            sys.exit(1)
        except yaml.YAMLError as e:
            print(f"Error parsing configuration file: {e}")
            sys.exit(1)
    
    def _validate_config(self):
        """Validate required configuration fields"""
        if self.data is None:
            print(f"Configuration file {self.config_path} is empty or invalid!")
            sys.exit(1)
            
        required_sections = ['llm', 'android', 'translation']
        for section in required_sections:
            if section not in self.data:
                print(f"Missing required section: {section}")
                sys.exit(1)
    
    @property
    def llm_config(self) -> Dict[str, Any]:
        return self.data['llm']
    
    @property
    def android_config(self) -> Dict[str, Any]:
        return self.data['android']
    
    @property
    def translation_config(self) -> Dict[str, Any]:
        return self.data['translation']
    
    @property
    def output_config(self) -> Dict[str, Any]:
        return self.data.get('output', {})
    
    @property
    def examples_config(self) -> Dict[str, Any]:
        return self.data.get('examples', {})
    
    def has_examples_config(self) -> bool:
        """Check if examples configuration is present and valid"""
        examples = self.data.get('examples', {})
        return bool(
            examples and
            examples.get('input_folder') and
            examples.get('base_folder') and
            examples.get('target_folders')
        )