FROM python:3.13-slim AS builder

# Set working directory
WORKDIR /app

# Install system dependencies for CVS
RUN apt-get update && \
    apt-get install -y cvs && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Copy only requirements first to leverage docker cache
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application
COPY . .

# Install the package in editable mode
RUN pip install --no-cache-dir -e .

# Final stage
FROM python:3.13-slim

# Set working directory
WORKDIR /app

# Install CVS
RUN apt-get update && \
    apt-get install -y cvs && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Copy only necessary files from builder
COPY --from=builder /app /app
COPY --from=builder /usr/local/lib/python3.13/site-packages /usr/local/lib/python3.13/site-packages

# Set environment variables for configuration (with defaults)
ENV CVS_URL="" \
    REPO_CHECKOUTS=/tmp/cvs_checkouts \
    CVS_MODULE="" \
    FLASK_HOST=0.0.0.0 \
    FLASK_PORT=5000 \
    FLASK_DEBUG=false

# Expose the application port
EXPOSE 5000

# Set the entrypoint to run the application with environment variables as command-line arguments
ENTRYPOINT ["sh", "-c", "python -m cvs_proxy.app --cvs-url \"$CVS_URL\" --repo-checkouts \"$REPO_CHECKOUTS\" ${CVS_MODULE:+--cvs-module \"$CVS_MODULE\"} --host \"$FLASK_HOST\" --port \"$FLASK_PORT\" ${FLASK_DEBUG:+--debug}"]