backend

backend/mongo_service.py

@@ -0,0 +1,63 @@
+from motor.motor_asyncio import AsyncIOMotorClient
+from pymongo.errors import ServerSelectionTimeoutError
+from datetime import datetime, timedelta
+from typing import Dict, List, Optional, Any
+
+class MongoService:
+    def __init__(self, uri: str):
+        try:
+            # Simple connection without custom SSL context
+            self.client = AsyncIOMotorClient(
+                uri,
+                serverSelectionTimeoutMS=30000,
+                connectTimeoutMS=30000,
+                socketTimeoutMS=30000
+            )
+            print("MongoDB client initialized successfully")
+        except Exception as e:
+            print(f"MongoDB connection failed: {e}")
+            # Fallback to basic connection
+            self.client = AsyncIOMotorClient(uri)
+            
+        self.db = self.client.openlearnx
+        
+        # Collections
+        self.users = self.db.users
+        self.questions = self.db.questions
+        self.test_sessions = self.db.test_sessions
+        self.certificates = self.db.certificates
+        self.peer_reviews = self.db.peer_reviews
+    
+    async def init_db(self):
+        """Initialize database with indexes and sample data"""
+        try:
+            # Test connection first
+            await self.client.admin.command('ping')
+            print("MongoDB connection successful!")
+            
+            # Create indexes
+            await self.users.create_index("wallet_address", unique=True)
+            await self.users.create_index("email", unique=True, sparse=True)
+            
+            await self.questions.create_index("subject")
+            await self.questions.create_index("difficulty")
+            
+            await self.test_sessions.create_index("user_id")
+            await self.test_sessions.create_index("created_at")
+            
+            await self.certificates.create_index("user_id")
+            await self.certificates.create_index("token_id", unique=True)
+            
+            # Insert sample questions if none exist
+            if await self.questions.count_documents({}) == 0:
+                await self.insert_sample_questions()
+                print("Sample questions inserted successfully")
+                
+        except ServerSelectionTimeoutError as e:
+            print(f"Failed to connect to MongoDB: {e}")
+            print("Continuing without database initialization...")
+        except Exception as e:
+            print(f"Database initialization error: {e}")
+            print("Continuing without database initialization...")
+
+    # ... rest of your existing methods remain the same