"""
Phonetic classifier for Chinese phonemes
"""

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

from ..core.exceptions import PhoneticError


class PhoneticClassifier:
    """
    Classifier for Chinese phonetic elements based on linguistic features
    
    This is a placeholder implementation that will be expanded with
    the actual phonetic classification algorithms.
    """
    
    def __init__(self, classification_file: Optional[str] = None):
        """
        Initialize phonetic classifier
        
        Args:
            classification_file: Path to phonetic classification YAML file
        """
        self.classification_data = {}
        
        if classification_file:
            self.load_classification_data(classification_file)
    
    def load_classification_data(self, file_path: str):
        """
        Load phonetic classification data from YAML file
        
        Args:
            file_path: Path to YAML file
        """
        try:
            with open(file_path, 'r', encoding='utf-8') as f:
                self.classification_data = yaml.safe_load(f)
        except Exception as e:
            raise PhoneticError(f"Failed to load classification data: {e}")
    
    def classify_initial(self, initial: str) -> Dict[str, Any]:
        """
        Classify an initial (consonant)
        
        Args:
            initial: Initial to classify
            
        Returns:
            Classification information
        """
        # Placeholder implementation
        return {
            "phoneme": initial,
            "type": "initial",
            "classification": "unknown"
        }
    
    def classify_final(self, final: str) -> Dict[str, Any]:
        """
        Classify a final (vowel/rhyme)
        
        Args:
            final: Final to classify
            
        Returns:
            Classification information
        """
        # Placeholder implementation
        return {
            "phoneme": final,
            "type": "final", 
            "classification": "unknown"
        }
    
    def get_similarity_within_group(self, phoneme1: str, phoneme2: str) -> float:
        """
        Get similarity score for phonemes within the same group
        
        Args:
            phoneme1: First phoneme
            phoneme2: Second phoneme
            
        Returns:
            Similarity score
        """
        # Placeholder implementation
        if phoneme1 == phoneme2:
            return 1.0
        return 0.5  # Default similarity for same group