"""
File validation utilities for MixVideo V2
"""

from pathlib import Path
from typing import Union

import sys
import os

from config import settings


def validate_video_file(file_path: Union[str, Path]) -> bool:
    """
    Validate if file is a supported video format.
    
    Args:
        file_path: Path to video file
        
    Returns:
        True if valid video file, False otherwise
    """
    try:
        path = Path(file_path)
        
        # Check if file exists
        if not path.exists():
            return False
        
        # Check if it's a file (not directory)
        if not path.is_file():
            return False
        
        # Check file extension
        if path.suffix.lower() not in settings.supported_video_formats:
            return False
        
        # Check file size (not empty)
        if path.stat().st_size == 0:
            return False
        
        return True
        
    except Exception:
        return False


def validate_audio_file(file_path: Union[str, Path]) -> bool:
    """
    Validate if file is a supported audio format.
    
    Args:
        file_path: Path to audio file
        
    Returns:
        True if valid audio file, False otherwise
    """
    try:
        path = Path(file_path)
        
        # Check if file exists
        if not path.exists():
            return False
        
        # Check if it's a file (not directory)
        if not path.is_file():
            return False
        
        # Check file extension
        if path.suffix.lower() not in settings.supported_audio_formats:
            return False
        
        # Check file size (not empty)
        if path.stat().st_size == 0:
            return False
        
        return True
        
    except Exception:
        return False


def validate_image_file(file_path: Union[str, Path]) -> bool:
    """
    Validate if file is a supported image format.
    
    Args:
        file_path: Path to image file
        
    Returns:
        True if valid image file, False otherwise
    """
    try:
        path = Path(file_path)
        
        # Check if file exists
        if not path.exists():
            return False
        
        # Check if it's a file (not directory)
        if not path.is_file():
            return False
        
        # Check file extension
        if path.suffix.lower() not in settings.supported_image_formats:
            return False
        
        # Check file size (not empty)
        if path.stat().st_size == 0:
            return False
        
        return True
        
    except Exception:
        return False