server/app.py

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

"""
FastAPI application for the Agterm Environment.

This module creates an HTTP server that exposes the AgtermEnvironment
over HTTP endpoints, making it compatible with HTTPEnvClient.

Usage:
    # Development (with auto-reload):
    uvicorn server.app:app --reload --host 0.0.0.0 --port 8000

    # Production:
    uvicorn server.app:app --host 0.0.0.0 --port 8000 --workers 4

    # Or run directly:
    python -m server.app
"""

import argparse
import uvicorn
import os

try:
    from openenv_core.env_server import create_app
    from openenv_core.env_server import create_fastapi_app
    from openenv_core.env_server import create_web_interface_app

except Exception as e:  # pragma: no cover
    raise ImportError(
        "openenv_core is required for the web interface. Install dependencies with '\n    uv sync\n'"
    ) from e

from server import agtermEnvironment
from models import agtermAction, agtermObservation

# Create the environment instance
env = agtermEnvironment()

try:
    os.environ["ENABLE_WEB_INTERFACE"]
except KeyError:
    os.environ["ENABLE_WEB_INTERFACE"] = "False"

if os.environ["ENABLE_WEB_INTERFACE"] or os.environ["ENABLE_WEB_INTERFACE"] == "True":
    # Create the app with web interface and README integration
    app = create_web_interface_app(
        env,
        agtermAction,
        agtermObservation,
    )
else:
    # Create the app with web interface and README integration
    app = create_app(
        env,
        agtermAction,
        agtermObservation,
    )


def main(host: str = "0.0.0.0", port: int = 8000):
    """
    Entry point for direct execution via uv run or python -m.

    This function enables running the server without Docker:
        uv run --project . server
        uv run --project . server --port 8001
        python -m agTerm.server.app

    Args:
        host: Host address to bind to (default: "0.0.0.0")
        port: Port number to listen on (default: 8000)

    For production deployments, consider using uvicorn directly with
    multiple workers:
        uvicorn agTerm.server.app:app --workers 4
    """

    # Run the app with Uvicorn
    uvicorn.run(app, host=host, port=port)


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("--port", type=int, default=8000)
    args = parser.parse_args()
    main(port=args.port)