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 Wildfire Detection Environment.

This module creates an HTTP server that exposes the WildfireEnvironment
over HTTP and WebSocket endpoints, compatible with EnvClient.

Endpoints:
    - POST /reset: Reset the environment
    - POST /step: Execute an action
    - GET /state: Get current environment state
    - GET /schema: Get action/observation schemas
    - WS /ws: WebSocket endpoint for persistent sessions

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
"""

try:
    from openenv.core.env_server.http_server import create_app
except Exception as e:
    raise ImportError("openenv is required for the web interface.") from e

try:
    from models import WildfireAction, WildfireObservation
except (ModuleNotFoundError, ImportError):
    from multipen.models import WildfireAction, WildfireObservation

try:
    from server.wildfire_environment import WildfireEnvironment
except (ModuleNotFoundError, ImportError):
    from multipen.server.wildfire_environment import WildfireEnvironment


app = create_app(
    WildfireEnvironment,
    WildfireAction,
    WildfireObservation,
    env_name="wildfire_detection",
    max_concurrent_envs=1,
)


def main():
    """Entry point for direct execution."""
    import uvicorn

    uvicorn.run(app, host="0.0.0.0", port=8000)


if __name__ == "__main__":
    main()