FROM python:3.12-slim AS runtime

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/app/.venv/bin:${PATH}"

WORKDIR /app

RUN apt-get update \
    && apt-get install -y --no-install-recommends curl ca-certificates \
    && rm -rf /var/lib/apt/lists/* \
    && pip install --no-cache-dir uv

COPY pyproject.toml ./

# Bump DEPS_LOCK_ID when dependency wiring changes (busts DinD layer cache).
ARG DEPS_LOCK_ID=4
RUN echo "deps-lock=${DEPS_LOCK_ID}" && python - <<'PY'
import sys
import tomllib
from pathlib import Path

with open("pyproject.toml", "rb") as f:
    project = tomllib.load(f)["project"]

deps = project.get("dependencies") or []
if not deps:
    sys.exit("pyproject.toml has no dependencies")

skip = {"llm-connect", "hub-core"}
lines = [
    dep
    for dep in deps
    if dep not in skip
]
if not lines:
    sys.exit("no installable dependencies after filter")

req_path = Path("/app/requirements.txt")
req_path.write_text("\n".join(lines) + "\n", encoding="utf-8")
if req_path.stat().st_size == 0:
    sys.exit("requirements.txt is empty")
print(f"wrote {len(lines)} requirements to {req_path}")
PY

RUN uv venv /app/.venv \
    && uv pip install --python /app/.venv/bin/python --no-cache -r /app/requirements.txt

COPY --from=hub_core_src pyproject.toml /tmp/hub-core/pyproject.toml
COPY --from=hub_core_src hub_core/ /tmp/hub-core/hub_core/

RUN uv pip install --python /app/.venv/bin/python --no-cache /tmp/hub-core

RUN test -s /app/requirements.txt \
    && /app/.venv/bin/python -c "import asyncpg"

COPY alembic.ini ./
COPY api/ ./api/
COPY flows/ ./flows/
COPY mcp_server/ ./mcp_server/
COPY migrations/ ./migrations/
COPY policies/ ./policies/
COPY prompts/ ./prompts/
COPY scripts/ ./scripts/
COPY task_flow_engine/ ./task_flow_engine/

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/state/health', timeout=3).read()"

CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000"]