Revert "Added events system"

This reverts commit f00d569db3.

utils.py

@@ -0,0 +1,78 @@
+from flask_login import current_user
+from models import RoomMemberPermission
+from datetime import datetime, timezone
+
+def user_has_permission(room, perm_name):
+    """
+    Check if the current user has a specific permission in a room.
+    
+    Args:
+        room: Room object
+        perm_name: Name of the permission to check (e.g., 'can_view', 'can_upload')
+    
+    Returns:
+        bool: True if user has permission, False otherwise
+    """
+    # Admin users have all permissions
+    if current_user.is_admin:
+        return True
+    
+    # Check if user is a member of the room
+    if current_user not in room.members:
+        return False
+    
+    # Get user's permissions for this room
+    permission = RoomMemberPermission.query.filter_by(
+        room_id=room.id,
+        user_id=current_user.id
+    ).first()
+    
+    # If no specific permissions are set, user only has view access
+    if not permission:
+        return perm_name == 'can_view'
+    
+    # Check the specific permission
+    return getattr(permission, perm_name, False)
+
+def clean_path(path):
+    """
+    Clean a file path by removing leading/trailing slashes and normalizing separators.
+    
+    Args:
+        path: Path string to clean
+    
+    Returns:
+        str: Cleaned path
+    """
+    if not path:
+        return ''
+    return path.strip('/\\')
+
+def timeago(date):
+    """Convert a datetime to a human-readable time ago string."""
+    if not date:
+        return ''
+    
+    # Convert naive datetime to UTC if it's naive
+    if date.tzinfo is None:
+        date = date.replace(tzinfo=timezone.utc)
+    
+    now = datetime.now(timezone.utc)
+    diff = now - date
+    
+    if diff.days > 365:
+        years = diff.days // 365
+        return f'{years} year{"s" if years != 1 else ""} ago'
+    elif diff.days > 30:
+        months = diff.days // 30
+        return f'{months} month{"s" if months != 1 else ""} ago'
+    elif diff.days > 0:
+        return f'{diff.days} day{"s" if diff.days != 1 else ""} ago'
+    elif diff.seconds > 3600:
+        hours = diff.seconds // 3600
+        return f'{hours} hour{"s" if hours != 1 else ""} ago'
+    elif diff.seconds > 60:
+        minutes = diff.seconds // 60
+        return f'{minutes} minute{"s" if minutes != 1 else ""} ago'
+    else:
+        return 'just now'