Enforce json schema on more chat actors to improve schema compliance

Including infer webpage urls, gemini documents search, pick default
mode tools chat actors

src/khoj/processor/conversation/google/gemini_chat.py

@@ -4,6 +4,7 @@ from typing import Dict, List, Optional
 
 import pyjson5
 from langchain.schema import ChatMessage
+from pydantic import BaseModel
 
 from khoj.database.models import Agent, ChatModel, KhojUser
 from khoj.processor.conversation import prompts
@@ -96,12 +97,16 @@ def extract_questions_gemini(
     messages.append(ChatMessage(content=prompt, role="user"))
     messages.append(ChatMessage(content=system_prompt, role="system"))
 
+    class DocumentQueries(BaseModel):
+        queries: List[str]
+
     response = gemini_send_message_to_model(
         messages,
         api_key,
         model,
         api_base_url=api_base_url,
         response_type="json_object",
+        response_schema=DocumentQueries,
         tracer=tracer,
     )
 

src/khoj/routers/helpers.py

@@ -399,10 +399,15 @@ async def aget_data_sources_and_output_format(
 
     agent_chat_model = agent.chat_model if agent else None
 
+    class PickTools(BaseModel):
+        source: List[str]
+        output: str
+
     with timer("Chat actor: Infer information sources to refer", logger):
         response = await send_message_to_model_wrapper(
             relevant_tools_prompt,
             response_type="json_object",
+            response_schema=PickTools,
             user=user,
             query_files=query_files,
             agent_chat_model=agent_chat_model,
@@ -483,11 +488,15 @@ async def infer_webpage_urls(
 
     agent_chat_model = agent.chat_model if agent else None
 
+    class WebpageUrls(BaseModel):
+        links: List[str]
+
     with timer("Chat actor: Infer webpage urls to read", logger):
         response = await send_message_to_model_wrapper(
             online_queries_prompt,
             query_images=query_images,
             response_type="json_object",
+            response_schema=WebpageUrls,
             user=user,
             query_files=query_files,
             agent_chat_model=agent_chat_model,
@@ -563,11 +572,13 @@ async def generate_online_subqueries(
         response = pyjson5.loads(response)
         response = {q.strip() for q in response["queries"] if q.strip()}
         if not isinstance(response, set) or not response or len(response) == 0:
-            logger.error(f"Invalid response for constructing subqueries: {response}. Returning original query: {q}")
+            logger.error(
+                f"Invalid response for constructing online subqueries: {response}. Returning original query: {q}"
+            )
             return {q}
         return response
     except Exception as e:
-        logger.error(f"Invalid response for constructing subqueries: {response}. Returning original query: {q}")
+        logger.error(f"Invalid response for constructing online subqueries: {response}. Returning original query: {q}")
         return {q}
 
 
@@ -2054,7 +2065,7 @@ def schedule_automation(
     try:
         user_timezone = pytz.timezone(timezone)
     except pytz.UnknownTimeZoneError:
-        logger.error(f"Invalid timezone: {timezone}. Fallback to use UTC to schedule automation.")
+        logger.warning(f"Invalid timezone: {timezone}. Fallback to use UTC to schedule automation.")
         user_timezone = pytz.utc
 
     trigger = CronTrigger.from_crontab(crontime, user_timezone)