Add evaluation route for dataset upload functionality

Author: priyanshu6238

backend/app/api/main.py

@@ -14,6 +14,7 @@
     utils,
     onboarding,
     credentials,
+    evaluation,
 )
 from app.core.config import settings
 
@@ -22,6 +23,7 @@
 api_router.include_router(collections.router)
 api_router.include_router(credentials.router)
 api_router.include_router(documents.router)
+api_router.include_router(evaluation.router)
 api_router.include_router(login.router)
 api_router.include_router(onboarding.router)
 api_router.include_router(organization.router)

backend/app/api/routes/evaluation.py

@@ -0,0 +1,132 @@
+import csv
+import io
+from typing import List, Dict, Any
+from fastapi import APIRouter, UploadFile, File, Depends, HTTPException
+from sqlmodel import Session
+from langfuse import Langfuse
+
+from app.api.deps import get_current_user_org, get_db
+from app.core import logging
+from app.models import UserOrganization, UserProjectOrg
+from app.utils import APIResponse
+from app.crud.credentials import get_provider_credential
+
+logger = logging.getLogger(__name__)
+router = APIRouter(tags=["evaluation"])
+
+@router.post("/evaluation/upload-dataset")
+async def upload_dataset(
+    dataset_name: str,
+    file: UploadFile = File(...),
+    _session: Session = Depends(get_db),
+    _current_user: UserOrganization = Depends(get_current_user_org),
+):
+    """
+    Upload a CSV dataset for evaluation.
+    The CSV file should have two columns: input and expected_output.
+    Only the first 30 rows will be processed.
+    """
+    if not file.filename.endswith('.csv'):
+        return APIResponse.failure_response(error="Only CSV files are supported")
+
+    # Get Langfuse credentials
+    langfuse_credentials = get_provider_credential(
+        session=_session,
+        org_id=_current_user.organization_id,
+        provider="langfuse",
+        project_id=_current_user.project_id,
+    )
+    if not langfuse_credentials:
+        return APIResponse.failure_response(
+            error="Langfuse credentials not configured for this organization."
+        )
+
+    # Initialize Langfuse client
+    langfuse = Langfuse(
+        public_key=langfuse_credentials["public_key"],
+        secret_key=langfuse_credentials["secret_key"],
+        host=langfuse_credentials["host"],
+    )
+    # langfuse = Langfuse(
+    #     public_key="pk-lf-00d2d47a-86f0-4d8f-9d8b-ef24fc722731",
+    #     secret_key="sk-lf-5a7caba5-9293-409d-b1ef-e4b3fef990b7",
+    #     host="https://cloud.langfuse.com",
+    # )
+
+    try:
+        # Read and validate CSV file
+        contents = await file.read()
+        logger.info(f"Read {len(contents)} bytes from file")
+        
+        # Decode contents and create CSV reader
+        csv_content = contents.decode('utf-8')
+        logger.info(f"CSV content preview: {csv_content[:200]}...")
+        
+        csv_file = io.StringIO(csv_content)
+        reader = csv.DictReader(csv_file)
+        
+        # Validate headers
+        if not reader.fieldnames:
+            return APIResponse.failure_response(error="CSV file is empty or has no headers")
+            
+        logger.info(f"CSV headers found: {reader.fieldnames}")
+        
+        if not all(header in reader.fieldnames for header in ['input', 'expected_output']):
+            return APIResponse.failure_response(
+                error="CSV must contain 'input' and 'expected_output' columns"
+            )
+
+        # Create dataset
+        try:
+            dataset = langfuse.create_dataset(name=dataset_name)
+            logger.info(f"Created dataset with ID: {dataset.id}")
+        except Exception as e:
+            logger.error(f"Error creating dataset: {str(e)}")
+            return APIResponse.failure_response(error=f"Failed to create dataset: {str(e)}")
+
+        # Process rows (limited to 30)
+        rows_processed = 0
+        rows_data = []  # Store rows for logging
+        
+        for row in reader:
+            if rows_processed >= 30:
+                break
+
+            try:
+                # Log the row data
+                logger.info(f"Processing row {rows_processed + 1}: {row}")
+                
+                # Create dataset item
+                item = langfuse.create_dataset_item(
+                    dataset_name=dataset_name,
+                    input=row['input'],
+                    expected_output=row['expected_output']
+                )
+                logger.info(f"Created dataset item with ID: {item.id}")
+                
+                rows_processed += 1
+                rows_data.append(row)
+            except Exception as e:
+                logger.error(f"Error processing row {rows_processed + 1}: {str(e)}")
+                continue
+
+        if rows_processed == 0:
+            return APIResponse.failure_response(error="No rows were successfully processed")
+
+        # Log summary
+        logger.info(f"Successfully processed {rows_processed} rows")
+        logger.info(f"Processed data: {rows_data}")
+
+        return APIResponse.success_response(
+            data={
+                "message": f"Successfully uploaded {rows_processed} rows to dataset '{dataset_name}'",
+                "rows_processed": rows_processed,
+                "dataset_id": dataset.id if hasattr(dataset, 'id') else None
+            }
+        )
+
+    except Exception as e:
+        logger.error(f"Error uploading dataset: {str(e)}")
+        return APIResponse.failure_response(error=str(e))
+    finally:
+        await file.close()