# Flowfish Change Detection Worker Dockerfile
#
# Standalone worker for detecting infrastructure changes.
# Can be scaled horizontally with leader election.

FROM python:3.11-slim as base

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Worker-specific defaults
ENV CHANGE_DETECTION_ENABLED=true
ENV CHANGE_DETECTION_INTERVAL=60
ENV CHANGE_DETECTION_LOOKBACK_MINUTES=5

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    libpq-dev \
    make \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN useradd -m -u 1000 -s /bin/bash appuser

# Set work directory
WORKDIR /app

# Install Python dependencies (same as backend)
COPY backend/requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Install additional worker dependencies
RUN pip install --no-cache-dir httpx

# Copy source code
COPY backend/ .

# Copy proto files and generate
COPY proto/ ./proto_source/
RUN mkdir -p proto && \
    python -m grpc_tools.protoc \
    -I./proto_source \
    --python_out=./proto \
    --grpc_python_out=./proto \
    proto_source/*.proto && \
    for file in ./proto/*_pb2.py ./proto/*_pb2_grpc.py; do \
        if [ -f "$file" ]; then \
            sed -i 's/^import \(.*_pb2\)/from . import \1/' "$file"; \
        fi \
    done && \
    touch proto/__init__.py && \
    rm -rf proto_source

# OpenShift compatibility
RUN chown -R appuser:0 /app && \
    chmod -R g=u /app

USER appuser

# Expose health check port
EXPOSE 8001

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:8001/health || exit 1

# Run worker
CMD ["uvicorn", "worker_main:app", "--host", "0.0.0.0", "--port", "8001"]