# 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

# Only use Google Cloud auth if Vertex AI is enabled
use_vertex_ai = os.environ.get("GOOGLE_GENAI_USE_VERTEXAI", "TRUE").upper() == "TRUE"

if use_vertex_ai:
    try:
        import google.auth
        _, project_id = google.auth.default()
        os.environ.setdefault("GOOGLE_CLOUD_PROJECT", project_id)
        os.environ["GOOGLE_CLOUD_LOCATION"] = "global"
        os.environ.setdefault("GOOGLE_GENAI_USE_VERTEXAI", "True")
    except Exception:
        # If Google Cloud auth fails, fall back to API key mode
        os.environ.setdefault("GOOGLE_GENAI_USE_VERTEXAI", "False")
else:
    # Using Google AI Studio API key, no Google Cloud auth needed
    os.environ.setdefault("GOOGLE_GENAI_USE_VERTEXAI", "False")

# Only import agent if not in standalone mode (e.g., when using hybrid_agent directly)
if not os.environ.get("SKIP_AGENT_IMPORT", ""):
    from . import agent  # noqa: E402, F401