finish the idea of micro learning

data/content.py

@@ -0,0 +1,28 @@
+# In data/content.py
+import firebase_admin
+from firebase_admin import credentials
+from firebase_admin import firestore
+
+class ContentManager:
+    def __init__(self):
+        # Initialize Firebase
+        if not firebase_admin._apps:
+            cred = credentials.Certificate("path/to/serviceAccountKey.json")
+            firebase_admin.initialize_app(cred)
+        self.db = firestore.client()
+        self.collection = self.db.collection('content')
+    
+    def get_by_id(self, content_id):
+        """Retrieve content by ID"""
+        doc = self.collection.document(content_id).get()
+        return doc.to_dict() if doc.exists else None
+    
+    def save_content(self, content_data):
+        """Save new content"""
+        doc_ref = self.collection.document()
+        doc_ref.set(content_data)
+        return doc_ref.id
+    
+    def update_content(self, content_id, updates):
+        """Update existing content"""
+        self.collection.document(content_id).update(updates)