# ObsiGate — Multi-platform Docker image
# Stage 1: Install Python dependencies (with build tools)
FROM python:3.11-slim AS builder

RUN apt-get update \
    && apt-get install -y --no-install-recommends gcc libffi-dev libc6-dev libpango-1.0-0 libpangocairo-1.0-0 shared-mime-info \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /build
COPY backend/requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt

# Stage 2: Final lightweight image (no build tools)
FROM python:3.11-slim

LABEL maintainer="Bruno Beloeil" \
      version="1.4.0" \
      description="ObsiGate — lightweight web interface for Obsidian vaults"

WORKDIR /app

# Copy installed packages from builder stage
COPY --from=builder /install /usr/local

# WeasyPrint runtime dependencies
RUN apt-get update \
    && apt-get install -y --no-install-recommends libpango-1.0-0 libpangocairo-1.0-0 shared-mime-info \
    && rm -rf /var/lib/apt/lists/*

# Copy application code
COPY backend/ ./backend/
COPY frontend/ ./frontend/

# Generate VERSION file from git (fallback for version.py when .git is not available)
COPY .git/HEAD .git/refs/ /tmp/git-refs/
RUN cd /tmp/git-refs && \
    if [ -f HEAD ]; then \
      REF=$(cat HEAD | awk '{print $2}'); \
      if [ -f "$REF" ]; then \
        HASH=$(cat "$REF" | head -c 8); \
        echo "1.8.0-0-g${HASH}" > /app/backend/VERSION; \
      else \
        echo "1.8.0-dev" > /app/backend/VERSION; \
      fi; \
    else \
      echo "1.8.0-dev" > /app/backend/VERSION; \
    fi && \
    rm -rf /tmp/git-refs

# Create non-root user for security + data directory for auth persistence
# Using explicit UID/GID 1000 to match common host user and docker-compose settings
RUN groupadd -g 1000 obsigate && useradd -u 1000 -g obsigate -d /app -s /sbin/nologin obsigate \
    && mkdir -p /app/data \
    && chown -R obsigate:obsigate /app
USER obsigate

EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8080/api/health')" || exit 1

CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "8080"]