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python_core/utils/validators.py

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+"""
+File validation utilities for MixVideo V2
+"""
+
+from pathlib import Path
+from typing import Union
+
+import sys
+import os
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+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