# Copyright 2025 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os

from google.adk.agents import llm_agent
from google.adk.tools.bigquery import BigQueryCredentialsConfig
from google.adk.tools.bigquery import BigQueryToolset
import google.auth

RUN_WITH_ADC = False


if RUN_WITH_ADC:
  # Initialize the tools to use the application default credentials.
  application_default_credentials, _ = google.auth.default()
  credentials_config = BigQueryCredentialsConfig(
      credentials=application_default_credentials
  )
else:
  # Initiaze the tools to do interactive OAuth
  # The environment variables OAUTH_CLIENT_ID and OAUTH_CLIENT_SECRET
  # must be set
  credentials_config = BigQueryCredentialsConfig(
      client_id=os.getenv("OAUTH_CLIENT_ID"),
      client_secret=os.getenv("OAUTH_CLIENT_SECRET"),
  )

bigquery_toolset = BigQueryToolset(credentials_config=credentials_config)

# The variable name `root_agent` determines what your root agent is for the
# debug CLI
root_agent = llm_agent.Agent(
    model="gemini-2.0-flash",
    name="hello_agent",
    description=(
        "Agent to answer questions about BigQuery data and models and execute"
        " SQL queries."
    ),
    instruction="""\
        You are a data science agent with access to several BigQuery tools.
        Make use of those tools to answer the user's questions.
    """,
    tools=[bigquery_toolset],
)