# QR Presentation — self-contained image (Node + LibreOffice + ffmpeg)
FROM node:20-bookworm-slim

ENV DEBIAN_FRONTEND=noninteractive

# LibreOffice handles Office/OpenDocument -> PDF; ffmpeg normalises video;
# fonts make converted decks render correctly.
RUN apt-get update && apt-get install -y --no-install-recommends \
      libreoffice-impress \
      libreoffice-writer \
      libreoffice-calc \
      ffmpeg \
      curl ca-certificates \
      fonts-liberation fonts-dejavu-core fonts-noto-core \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY package.json package-lock.json* ./
RUN npm install --omit=dev --no-audit --no-fund

COPY . .

# Vendor PDF.js so the viewer works even on an offline / air-gapped network.
RUN mkdir -p public/vendor/pdfjs \
 && curl -fsSL https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js        -o public/vendor/pdfjs/pdf.min.js \
 && curl -fsSL https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js -o public/vendor/pdfjs/pdf.worker.min.js

ENV NODE_ENV=production \
    DATA_DIR=/data \
    HOME=/tmp \
    PORT=3000

# LibreOffice needs a writable home for its profile.
RUN mkdir -p /data && chown -R node:node /data /tmp
USER node

VOLUME ["/data"]
EXPOSE 3000
CMD ["node", "server/index.js"]