chore: make posthog optional (use mock if not env not set)

app/api/router.py

@@ -20,6 +20,7 @@
 from app.modules.parsing.graph_construction.parsing_controller import ParsingController
 from app.modules.parsing.graph_construction.parsing_schema import ParsingRequest
 from app.modules.utils.APIRouter import APIRouter
+from app.core.dependencies import get_analytics_service, AnalyticsService
 
 router = APIRouter()
 
@@ -55,6 +56,7 @@ async def get_api_key_user(
 async def create_conversation(
     conversation: SimpleConversationRequest,
     db: Session = Depends(get_db),
+    analytics_service: AnalyticsService = Depends(get_analytics_service),
     user=Depends(get_api_key_user),
 ):
     user_id = user["user_id"]
@@ -67,17 +69,20 @@ async def create_conversation(
         agent_ids=conversation.agent_ids,
     )
 
-    controller = ConversationController(db, user_id, None)
+    controller = ConversationController(db, user_id, None, analytics_service)
     return await controller.create_conversation(full_request)
 
 
 @router.post("/parse")
 async def parse_directory(
     repo_details: ParsingRequest,
     db: Session = Depends(get_db),
+    analytics_service: AnalyticsService = Depends(get_analytics_service),
     user=Depends(get_api_key_user),
 ):
-    return await ParsingController.parse_directory(repo_details, db, user)
+    return await ParsingController.parse_directory(
+        repo_details, db, user, analytics_service
+    )
 
 
 @router.get("/parsing-status/{project_id}")
@@ -94,13 +99,14 @@ async def post_message(
     conversation_id: str,
     message: MessageRequest,
     db: Session = Depends(get_db),
+    analytics_service: AnalyticsService = Depends(get_analytics_service),
     user=Depends(get_api_key_user),
 ):
     if message.content == "" or message.content is None or message.content.isspace():
         raise HTTPException(status_code=400, detail="Message content cannot be empty")
 
     user_id = user["user_id"]
     # Note: email is no longer available with API key auth
-    controller = ConversationController(db, user_id, None)
+    controller = ConversationController(db, user_id, None, analytics_service)
     message_stream = controller.post_message(conversation_id, message, stream=False)
     return StreamingResponse(message_stream, media_type="text/event-stream")

app/celery/tasks/parsing_tasks.py

@@ -8,6 +8,7 @@
 from app.core.database import SessionLocal
 from app.modules.parsing.graph_construction.parsing_schema import ParsingRequest
 from app.modules.parsing.graph_construction.parsing_service import ParsingService
+from app.core.dependencies import get_analytics_service
 
 logger = logging.getLogger(__name__)
 
@@ -42,7 +43,8 @@ def process_parsing(
 ) -> None:
     logger.info(f"Task received: Starting parsing process for project {project_id}")
     try:
-        parsing_service = ParsingService(self.db, user_id)
+        analytics_service = get_analytics_service()
+        parsing_service = ParsingService(self.db, user_id, analytics_service)
 
         async def run_parsing():
             import time

app/core/dependencies.py

@@ -0,0 +1,42 @@
+from app.modules.utils.analytics_service import (
+    AnalyticsService,
+    PosthogAnalyticsService,
+    MockAnalyticsService,
+)
+from dotenv import load_dotenv
+from starlette.datastructures import State
+from fastapi import Request
+import logging
+import os
+
+logger = logging.getLogger(__name__)
+
+
+# Analytics service configuration
+
+
+def init_analytics_service() -> AnalyticsService:
+    POSTHOG_API_KEY = os.getenv("POSTHOG_API_KEY") or ""
+    POSTHOG_HOST = os.getenv("POSTHOG_HOST") or ""
+
+    if POSTHOG_API_KEY != "" and POSTHOG_HOST != "":
+        logger.info(f"using PostHog analytics service with host {POSTHOG_HOST}")
+        return PosthogAnalyticsService(POSTHOG_API_KEY, POSTHOG_HOST)
+
+    logger.info(
+        "no AnalyticsService envs found (POSTHOG_API_KEY, POSTHOG_HOST), using MockAnalytics service"
+    )
+    return MockAnalyticsService()
+
+
+def get_analytics_service(request: Request) -> AnalyticsService:
+    return request.app.state.analytics_service
+
+
+# State initialization
+
+
+def init_state(state: State):
+    load_dotenv(override=True)
+    state.analytics_service = init_analytics_service()
+    return state

app/main.py

@@ -31,12 +31,21 @@
 from app.modules.users.user_router import router as user_router
 from app.modules.users.user_service import UserService
 from app.modules.utils.firebase_setup import FirebaseSetup
+from contextlib import asynccontextmanager
+from app.core.dependencies import init_state, init_analytics_service
 
 logging.basicConfig(
     level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s"
 )
 
 
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    app.state = init_state(app.state)
+    yield
+    # service closing logic goes here
+
+
 class MainApp:
     def __init__(self):
         load_dotenv(override=True)
@@ -49,7 +58,7 @@ def __init__(self):
             )
             exit(1)
         self.setup_sentry()
-        self.app = FastAPI()
+        self.app = FastAPI(lifespan=lifespan)
         self.setup_cors()
         self.initialize_database()
         self.check_and_set_env_vars()

app/modules/auth/auth_router.py

@@ -14,7 +14,7 @@
 from app.modules.users.user_schema import CreateUser
 from app.modules.users.user_service import UserService
 from app.modules.utils.APIRouter import APIRouter
-from app.modules.utils.posthog_helper import PostHogClient
+from app.core.dependencies import get_analytics_service, AnalyticsService
 
 SLACK_WEBHOOK_URL = os.getenv("SLACK_WEBHOOK_URL", None)
 
@@ -41,7 +41,11 @@ async def login(login_request: LoginRequest):
             return JSONResponse(content={"error": f"ERROR: {str(e)}"}, status_code=400)
 
     @auth_router.post("/signup")
-    async def signup(request: Request, db: Session = Depends(get_db)):
+    async def signup(
+        request: Request,
+        db: Session = Depends(get_db),
+        analytics_service: AnalyticsService = Depends(get_analytics_service),
+    ):
         body = json.loads(await request.body())
         uid = body["uid"]
         oauth_token = body["accessToken"]
@@ -73,8 +77,8 @@ async def signup(request: Request, db: Session = Depends(get_db)):
                 f"New signup: {body['email']} ({body['displayName']})"
             )
 
-            PostHogClient().send_event(
-                uid,
+            analytics_service.capture_event(
+                f"{uid}",
                 "signup_event",
                 {
                     "email": body["email"],

app/modules/conversations/conversation/conversation_controller.py

@@ -21,13 +21,23 @@
     MessageResponse,
     NodeContext,
 )
+from app.core.dependencies import AnalyticsService
 
 
 class ConversationController:
-    def __init__(self, db: Session, user_id: str, user_email: str):
+    def __init__(
+        self,
+        db: Session,
+        user_id: str,
+        user_email: str,
+        analytics_service: AnalyticsService,
+    ):
         self.user_email = user_email
-        self.service = ConversationService.create(db, user_id, user_email)
+        self.service = ConversationService.create(
+            db, user_id, user_email, analytics_service
+        )
         self.user_id = user_id
+        self.analytics_service = analytics_service
 
     async def create_conversation(
         self, conversation: CreateConversationRequest

app/modules/conversations/conversation/conversation_service.py

@@ -45,7 +45,7 @@
 )
 from app.modules.projects.projects_service import ProjectService
 from app.modules.users.user_service import UserService
-from app.modules.utils.posthog_helper import PostHogClient
+from app.core.dependencies import AnalyticsService
 
 logger = logging.getLogger(__name__)
 
@@ -75,7 +75,7 @@ def __init__(self, db, provider_service):
         self.db = db
         self.provider_service = provider_service
         self.agent = None
-        self.current_agent_id = None  
+        self.current_agent_id = None
         self.classifier = None
         self.agents_service = AgentsService(db)
         self.agent_factory = AgentFactory(db, provider_service)
@@ -148,17 +148,24 @@ async def classifier_node(self, state: State) -> Command:
             return Command(update={"response": "No query provided"}, goto=END)
 
         agent_list = {agent.id: agent.status for agent in self.available_agents}
-        
+
         # First check - if this is a custom agent (non-SYSTEM), route directly
-        if state["agent_id"] in agent_list and agent_list[state["agent_id"]] != "SYSTEM":
+        if (
+            state["agent_id"] in agent_list
+            and agent_list[state["agent_id"]] != "SYSTEM"
+        ):
             # Initialize the agent if needed
             if not self.agent or self.current_agent_id != state["agent_id"]:
                 try:
-                    self.agent = self.agent_factory.get_agent(state["agent_id"], state["user_id"])
+                    self.agent = self.agent_factory.get_agent(
+                        state["agent_id"], state["user_id"]
+                    )
                     self.current_agent_id = state["agent_id"]
                 except Exception as e:
                     logger.error(f"Failed to create agent {state['agent_id']}: {e}")
-                    return Command(update={"response": "Failed to initialize agent"}, goto=END)
+                    return Command(
+                        update={"response": "Failed to initialize agent"}, goto=END
+                    )
             return Command(update={"agent_id": state["agent_id"]}, goto="agent_node")
 
         # For system agents, perform classification
@@ -167,25 +174,33 @@ async def classifier_node(self, state: State) -> Command:
             agent_id=state["agent_id"],
             agent_descriptions=self.agent_descriptions,
         )
-        
+
         response = await self.llm.ainvoke(prompt)
         response = response.content.strip("`")
         try:
             agent_id, confidence = response.split("|")
             confidence = float(confidence)
-            selected_agent_id = agent_id if confidence >= 0.5 and agent_id in agent_list else state["agent_id"]
+            selected_agent_id = (
+                agent_id
+                if confidence >= 0.5 and agent_id in agent_list
+                else state["agent_id"]
+            )
         except (ValueError, TypeError):
             logger.error("Classification format error, falling back to current agent")
             selected_agent_id = state["agent_id"]
 
         # Initialize the selected system agent
         if not self.agent or self.current_agent_id != selected_agent_id:
             try:
-                self.agent = self.agent_factory.get_agent(selected_agent_id, state["user_id"])
+                self.agent = self.agent_factory.get_agent(
+                    selected_agent_id, state["user_id"]
+                )
                 self.current_agent_id = selected_agent_id
             except Exception as e:
                 logger.error(f"Failed to create agent {selected_agent_id}: {e}")
-                return Command(update={"response": "Failed to initialize agent"}, goto=END)
+                return Command(
+                    update={"response": "Failed to initialize agent"}, goto=END
+                )
 
         logger.info(
             f"Streaming AI response for conversation {state['conversation_id']} "
@@ -198,7 +213,7 @@ async def agent_node(self, state: State, writer: StreamWriter):
         if not self.agent:
             logger.error("Agent not initialized before agent_node execution")
             return Command(update={"response": "Agent not initialized"}, goto=END)
-            
+
         try:
             async for chunk in self.agent.run(
                 query=state["query"],
@@ -263,6 +278,7 @@ def __init__(
         provider_service: ProviderService,
         agent_injector_service: AgentInjectorService,
         custom_agent_service: CustomAgentsService,
+        analytics_service: AnalyticsService,
     ):
         self.sql_db = db
         self.user_id = user_id
@@ -272,9 +288,16 @@ def __init__(
         self.provider_service = provider_service
         self.agent_injector_service = agent_injector_service
         self.custom_agent_service = custom_agent_service
+        self.analytics_service = analytics_service
 
     @classmethod
-    def create(cls, db: Session, user_id: str, user_email: str):
+    def create(
+        cls,
+        db: Session,
+        user_id: str,
+        user_email: str,
+        analytics_service: AnalyticsService,
+    ):
         project_service = ProjectService(db)
         history_manager = ChatHistoryService(db)
         provider_service = ProviderService(db, user_id)
@@ -289,6 +312,7 @@ def create(cls, db: Session, user_id: str, user_email: str):
             provider_service,
             agent_injector_service,
             custom_agent_service,
+            analytics_service,
         )
 
     async def check_conversation_access(
@@ -395,7 +419,7 @@ def _create_conversation_record(
             f"Project id : {conversation.project_ids[0]} Created new conversation with ID: {conversation_id}, title: {title}, user_id: {user_id}, agent_id: {conversation.agent_ids[0]}"
         )
         provider_name = self.provider_service.get_llm_provider_name()
-        PostHogClient().send_event(
+        self.analytics_service.capture_event(
             user_id,
             "create Conversation Event",
             {
@@ -452,7 +476,7 @@ async def store_message(
             logger.info(f"Stored message in conversation {conversation_id}")
             provider_name = self.provider_service.get_llm_provider_name()
 
-            PostHogClient().send_event(
+            self.analytics_service.capture_event(
                 user_id,
                 "message post event",
                 {"conversation_id": conversation_id, "llm": provider_name},
@@ -583,7 +607,7 @@ async def regenerate_last_message(
             await self._archive_subsequent_messages(
                 conversation_id, last_human_message.created_at
             )
-            PostHogClient().send_event(
+            self.analytics_service.capture_event(
                 user_id,
                 "regenerate_conversation_event",
                 {"conversation_id": conversation_id},
@@ -740,7 +764,7 @@ async def delete_conversation(self, conversation_id: str, user_id: str) -> dict:
             # If we get here, commit the transaction
             self.sql_db.commit()
 
-            PostHogClient().send_event(
+            self.analytics_service.capture_event(
                 user_id,
                 "delete_conversation_event",
                 {"conversation_id": conversation_id},