# Multi-stage Dockerfile for Gateway service (FastAPI)

FROM python:3.11-slim as base

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

COPY services/gateway/requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir -r requirements.txt

COPY shared /app/shared
COPY proto /app/proto

RUN python -m grpc_tools.protoc \
    -I/app/proto \
    --python_out=/app/shared \
    --grpc_python_out=/app/shared \
    /app/proto/metrics.proto \
    && sed -i 's/^import metrics_pb2/from shared import metrics_pb2/' /app/shared/metrics_pb2_grpc.py

COPY services/gateway /app/services/gateway
COPY services/aggregator/__init__.py /app/services/aggregator/__init__.py
COPY services/aggregator/storage.py /app/services/aggregator/storage.py
COPY web /app/web

ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1

# =============================================================================
FROM base as development

RUN pip install --no-cache-dir watchfiles

CMD ["uvicorn", "services.gateway.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]

# =============================================================================
FROM base as production

RUN useradd --create-home --shell /bin/bash appuser
USER appuser

EXPOSE 8000

CMD ["uvicorn", "services.gateway.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]