# 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.

# Use the pre-built OpenSpiel base image
ARG BASE_IMAGE=ghcr.io/meta-pytorch/openenv-openspiel-base:sha-e622c7e
FROM ${BASE_IMAGE} AS builder

# Copy OpenEnv core (base image already set WORKDIR=/app)
WORKDIR /app

ARG BUILD_MODE=in-repo

# Copy OpenSpiel environment
COPY . /app/env

WORKDIR /app/env

# Ensure uv is available (for local builds where base image lacks it)
RUN if ! command -v uv >/dev/null 2>&1; then \
        curl -LsSf https://astral.sh/uv/install.sh | sh && \
        mv /root/.local/bin/uv /usr/local/bin/uv && \
        mv /root/.local/bin/uvx /usr/local/bin/uvx; \
    fi
    
# Install dependencies using uv sync
# If uv.lock exists, use it; otherwise resolve on the fly
RUN --mount=type=cache,target=/root/.cache/uv \
    if [ -f uv.lock ]; then \
        uv sync --frozen --no-install-project --no-editable; \
    else \
        uv sync --no-install-project --no-editable; \
    fi

RUN --mount=type=cache,target=/root/.cache/uv \
    if [ -f uv.lock ]; then \
        uv sync --frozen --no-editable; \
    else \
        uv sync --no-editable; \
    fi

# Final runtime stage
FROM ${BASE_IMAGE}

WORKDIR /app

# Copy the virtual environment from builder
COPY --from=builder /app/env/.venv /app/.venv

# Copy the environment code
COPY --from=builder /app/env /app/env

# Set PATH to use the virtual environment
ENV PATH="/app/.venv/bin:$PATH"

# Extend Python path for OpenEnv (base image set PYTHONPATH=/app/src)
# We prepend OpenSpiel paths
ENV PYTHONPATH="/repo:/repo/build/python:/app/env:$PYTHONPATH"

# OpenSpiel-specific environment variables (can be overridden at runtime)
ENV OPENSPIEL_GAME=catch
ENV OPENSPIEL_AGENT_PLAYER=0
ENV OPENSPIEL_OPPONENT_POLICY=random

# Health check (curl is provided by openenv-base)
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Note: EXPOSE 8000 already set by openenv-base
# Run the FastAPI server (uvicorn installed by openenv-base)
ENV ENABLE_WEB_INTERFACE=true
CMD ["sh", "-c", "cd /app/env && uvicorn server.app:app --host 0.0.0.0 --port 8000"]