Google ADK review

# tools.py holds the shared web_search and read_page functions over Geekflare's APIs,
# common.py the model name, OpenRouter key, system prompt and task.
import asyncio

from google.adk.agents import Agent
from google.adk.models.lite_llm import LiteLlm
from google.adk.runners import InMemoryRunner
from google.genai import types

import tools
from common import KEY, MODEL, SYSTEM

model = LiteLlm(model=f"openrouter/{MODEL}", api_key=KEY, temperature=0, max_tokens=1024)
agent = Agent(name="researcher", model=model, instruction=SYSTEM, tools=[tools.web_search, tools.read_page])
runner = InMemoryRunner(agent=agent, app_name="research")


async def _run(task: str) -> str:
    session = await runner.session_service.create_session(app_name="research", user_id="tester")
    answer = ""
    async for event in runner.run_async(user_id="tester", session_id=session.id,
                                        new_message=types.Content(role="user", parts=[types.Part(text=task)])):
        if event.is_final_response() and event.content and event.content.parts:
            answer = "".join(p.text or "" for p in event.content.parts)
    return answer


def run(task: str) -> str:
    return asyncio.run(_run(task))