"""ADK agent with vector search RAG tool."""

from google import genai
from google.adk.agents.llm_agent import Agent
from google.adk.runners import Runner
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
from google.cloud.firestore_v1.async_client import AsyncClient

from va_agent.auth import auth_headers_provider
from va_agent.config import settings
from va_agent.session import FirestoreSessionService

toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(url=settings.mcp_remote_url),
    header_provider=auth_headers_provider,
)

agent = Agent(
    model=settings.agent_model,
    name=settings.agent_name,
    instruction=settings.agent_instructions,
    tools=[toolset],
)

session_service = FirestoreSessionService(
    db=AsyncClient(database=settings.firestore_db),
    compaction_token_threshold=10_000,
    genai_client=genai.Client(),
)

runner = Runner(
    app_name="va_agent",
    agent=agent,
    session_service=session_service,
    auto_create_session=True,
)