# ── Stage 1: build dependencies with uv ──────────────────────────────────────
FROM python:3.12-slim AS builder

# Install uv
COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv

WORKDIR /app

# Copy dependency files first for layer caching
COPY pyproject.toml uv.lock ./

# Install production deps only into /app/.venv
RUN uv sync --frozen --no-dev --no-install-project

# ── Stage 2: runtime image ────────────────────────────────────────────────────
FROM python:3.12-slim AS runtime

# System libs required by easyocr / opencv / weasyprint
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgl1 \
    libglib2.0-0 \
    libgomp1 \
    libpango-1.0-0 \
    libpangocairo-1.0-0 \
    libcairo2 \
    libgdk-pixbuf-2.0-0 \
    shared-mime-info \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy venv from builder
COPY --from=builder /app/.venv /app/.venv

# Copy application source
COPY src/ ./src/
COPY frontend/ ./frontend/

# Non-root user for security — create home so easyocr can write model cache
RUN useradd --create-home --shell /bin/false appuser \
    && chown -R appuser:appuser /app

# Pre-download easyocr models at build time as appuser so cache dir is owned correctly
USER appuser
ENV EASYOCR_MODULE_PATH="/home/appuser/.EasyOCR"
RUN /app/.venv/bin/python -c "import easyocr; easyocr.Reader(['en'], gpu=False)" \
    && echo "easyocr models downloaded"

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

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=60s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"

CMD ["uvicorn", "src.api:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]