# Stage 1: Build stage with uv
FROM ghcr.io/astral-sh/uv:python3.13-bookworm-slim AS builder

WORKDIR /app

# Enable bytecode compilation for faster startup
ENV UV_COMPILE_BYTECODE=1
# Copy from the cache instead of linking (required for multi-stage)
ENV UV_LINK_MODE=copy

# Install dependencies first (cached layer)
COPY pyproject.toml uv.lock ./
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-install-project --no-dev

# Copy application code and install project
COPY app.py ./
COPY pages/ ./pages/
COPY config.py ./
COPY .streamlit/ ./.streamlit/
RUN --mount=type=cache,target=/root/.cache/uv \
    uv sync --frozen --no-dev

# Stage 2: Runtime stage (minimal image)
FROM python:3.13-slim-bookworm AS runtime

WORKDIR /app

# Install LaTeX and build dependencies for tueplots/matplotlib
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    texlive-latex-base \
    texlive-latex-extra \
    texlive-fonts-recommended \
    texlive-fonts-extra \
    cm-super \
    dvipng \
    ghostscript \
    lmodern \
    fontconfig \
    && rm -rf /var/lib/apt/lists/* \
    && fc-cache -f

# Copy the resolved virtualenv from the builder stage.
COPY --from=builder /app/.venv /app/.venv

# Copy application code
COPY app.py ./
COPY pages/ ./pages/
COPY config.py ./
COPY .streamlit/ ./.streamlit/

# Create non-root user for security
RUN useradd --create-home --shell /bin/bash appuser
USER appuser

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV PATH="/app/.venv/bin:$PATH"
ENV DEMO_DATA_DIR=/data

# Streamlit configuration
ENV STREAMLIT_SERVER_PORT=7860
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/_stcore/health')"

# Run streamlit
CMD ["streamlit", "run", "app.py"]