Chore: Remove Ontology file size limit. Code duplications (#1880)

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## Description
We received a complaint about the 10MB file size limit. 
Removed code duplications
More strict types
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this PR.
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process and reasoning.
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## Type of Change
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- [ ] Bug fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
- [ ] Code refactoring
- [ ] Performance improvement
- [ ] Other (please specify):

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## Pre-submission Checklist
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- [ ] **I have tested my changes thoroughly before submitting this PR**
- [ ] **This PR contains minimal changes necessary to address the
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Support for supplying optional per-file descriptions when uploading
multiple ontologies.

* **Improvements**
* Removed the 10MB file size limit for ontology uploads, allowing larger
files.
* Streamlined and more robust upload handling with improved per-file
validation and safer upload behavior.

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

cognee/api/v1/ontologies/ontologies.py

@@ -5,6 +5,7 @@ from pathlib import Path
 from datetime import datetime, timezone
 from typing import Optional, List
 from dataclasses import dataclass
+from fastapi import UploadFile
 
 
 @dataclass
@@ -45,8 +46,10 @@ class OntologyService:
             json.dump(metadata, f, indent=2)
 
     async def upload_ontology(
-        self, ontology_key: str, file, user, description: Optional[str] = None
+        self, ontology_key: str, file: UploadFile, user, description: Optional[str] = None
     ) -> OntologyMetadata:
+        if not file.filename:
+            raise ValueError("File must have a filename")
         if not file.filename.lower().endswith(".owl"):
             raise ValueError("File must be in .owl format")
 
@@ -57,8 +60,6 @@ class OntologyService:
             raise ValueError(f"Ontology key '{ontology_key}' already exists")
 
         content = await file.read()
-        if len(content) > 10 * 1024 * 1024:
-            raise ValueError("File size exceeds 10MB limit")
 
         file_path = user_dir / f"{ontology_key}.owl"
         with open(file_path, "wb") as f:
@@ -82,7 +83,11 @@ class OntologyService:
         )
 
     async def upload_ontologies(
-        self, ontology_key: List[str], files: List, user, descriptions: Optional[List[str]] = None
+        self,
+        ontology_key: List[str],
+        files: List[UploadFile],
+        user,
+        descriptions: Optional[List[str]] = None,
     ) -> List[OntologyMetadata]:
         """
         Upload ontology files with their respective keys.
@@ -105,47 +110,17 @@ class OntologyService:
         if len(set(ontology_key)) != len(ontology_key):
             raise ValueError("Duplicate ontology keys not allowed")
 
-        if descriptions and len(descriptions) != len(files):
-            raise ValueError("Number of descriptions must match number of files")
-
         results = []
-        user_dir = self._get_user_dir(str(user.id))
-        metadata = self._load_metadata(user_dir)
 
         for i, (key, file) in enumerate(zip(ontology_key, files)):
-            if key in metadata:
-                raise ValueError(f"Ontology key '{key}' already exists")
-
-            if not file.filename.lower().endswith(".owl"):
-                raise ValueError(f"File '{file.filename}' must be in .owl format")
-
-            content = await file.read()
-            if len(content) > 10 * 1024 * 1024:
-                raise ValueError(f"File '{file.filename}' exceeds 10MB limit")
-
-            file_path = user_dir / f"{key}.owl"
-            with open(file_path, "wb") as f:
-                f.write(content)
-
-            ontology_metadata = {
-                "filename": file.filename,
-                "size_bytes": len(content),
-                "uploaded_at": datetime.now(timezone.utc).isoformat(),
-                "description": descriptions[i] if descriptions else None,
-            }
-            metadata[key] = ontology_metadata
-
             results.append(
-                OntologyMetadata(
+                await self.upload_ontology(
                     ontology_key=key,
-                    filename=file.filename,
-                    size_bytes=len(content),
-                    uploaded_at=ontology_metadata["uploaded_at"],
+                    file=file,
+                    user=user,
                     description=descriptions[i] if descriptions else None,
                 )
             )
-
-        self._save_metadata(user_dir, metadata)
         return results
 
     def get_ontology_contents(self, ontology_key: List[str], user) -> List[str]: