# syntax=docker/dockerfile:1
#
# BentoPDF for bau-pm: BentoPDF built from source at a pinned commit with
# BentoPDF's own air-gapped build options, every module it would otherwise load
# from a CDN served from this image, and bau-pm's hand-off glue added to every
# page. Nothing here edits BentoPDF's code: its documented build arguments, its
# runtime config.json, its generated header file with the hosts taken out, and
# our files beside its own.
#
# The images are upstream's: the builder and the runtime stage are the ones
# BentoPDF's Dockerfile uses.

ARG BENTOPDF_REF=v2.8.8
ARG BENTOPDF_COMMIT=f96cd4e5166f3d51393dfe9f3c440b5bb77802f1
ARG NODE_IMAGE=public.ecr.aws/docker/library/node:20-alpine
ARG NGINX_IMAGE=quay.io/nginx/nginx-unprivileged:alpine-slim

# --- BentoPDF's source, at the commit the tag must point to ---
FROM ${NODE_IMAGE} AS source
ARG BENTOPDF_REF
ARG BENTOPDF_COMMIT
RUN apk add --no-cache git
RUN git clone --quiet --depth 1 --branch "${BENTOPDF_REF}" https://github.com/alam00000/bentopdf.git /src \
 && actual=$(git -C /src rev-parse HEAD) \
 && if [ "$actual" != "${BENTOPDF_COMMIT}" ]; then \
      echo "BentoPDF ${BENTOPDF_REF} is ${actual}, expected ${BENTOPDF_COMMIT}" >&2; exit 1; \
    fi \
 && rm -rf /src/.git

# --- The CDN modules, packed from npm and checked against vendor.lock ---
FROM ${NODE_IMAGE} AS vendor
COPY --from=source /src/bentopdf-airgap-bundle /src/bentopdf-airgap-bundle
COPY vendor.lock /vendor.lock
COPY --chmod=755 scripts/vendor.sh /usr/local/bin/vendor.sh
RUN vendor.sh /src /vendor.lock /wasm

# --- BentoPDF's build, as BentoPDF's Dockerfile runs it ---
FROM ${NODE_IMAGE} AS builder
WORKDIR /app
COPY --from=source /src/package.json /src/package-lock.json ./
COPY --from=source /src/vendor ./vendor
ENV HUSKY=0
RUN npm config set fetch-retries 5 \
 && npm config set fetch-retry-mintimeout 60000 \
 && npm config set fetch-retry-maxtimeout 300000 \
 && npm config set fetch-timeout 600000 \
 && npm ci
COPY --from=source /src ./

# The air-gapped build: every module path is this image's own, the CORS proxy
# (used only by the X.509 tool, which config.json disables) is switched off,
# and Simple Mode drops the marketing pages. Relative paths, so the image does
# not know the hostname it will be served under.
ENV SIMPLE_MODE=true \
    DISABLE_GITHUB_STARS=true \
    COMPRESSION_MODE=all \
    BASE_URL= \
    VITE_DEFAULT_LANGUAGE=de \
    VITE_CORS_PROXY_URL= \
    VITE_WASM_PYMUPDF_URL=/wasm/pymupdf/ \
    VITE_WASM_GS_URL=/wasm/gs/ \
    VITE_WASM_CPDF_URL=/wasm/cpdf/ \
    VITE_TESSERACT_WORKER_URL=/wasm/ocr/worker.min.js \
    VITE_TESSERACT_CORE_URL=/wasm/ocr/core \
    VITE_TESSERACT_LANG_URL=/wasm/ocr/lang-data \
    VITE_TESSERACT_AVAILABLE_LANGUAGES=deu,fra,ita,eng \
    VITE_OCR_FONT_BASE_URL=/wasm/ocr/fonts \
    VITE_EMBEDPDF_FONTS_URL=/wasm/embedpdf \
    NODE_OPTIONS=--max-old-space-size=3072
RUN npm run build

COPY --chmod=755 scripts/finish.sh /usr/local/bin/finish.sh
RUN finish.sh /app

# --- Upstream's runtime stage, with our files beside BentoPDF's ---
FROM ${NGINX_IMAGE}
ARG BENTOPDF_REF
ARG SOURCE_URL=https://src.bundespruefstelle.ch/magdev/bau-pm-pdf-tools
ARG VERSION=dev

LABEL org.opencontainers.image.title="bau-pm-pdf-tools" \
      org.opencontainers.image.description="BentoPDF ${BENTOPDF_REF} for bau-pm, without third-party hosts" \
      org.opencontainers.image.source="${SOURCE_URL}" \
      org.opencontainers.image.version="${VERSION}" \
      org.opencontainers.image.licenses="AGPL-3.0-only"

ENV DISABLE_IPV6=false \
    PORT=8080

USER root
RUN apk upgrade --no-cache
USER nginx

COPY --chown=nginx:nginx --from=builder /app/dist /usr/share/nginx/html
COPY --chown=nginx:nginx --from=builder /app/nginx.conf /etc/nginx/nginx.conf
COPY --chown=nginx:nginx --from=builder /app/security-headers.conf /etc/nginx/security-headers.conf
COPY --chown=nginx:nginx --from=builder /app/security-headers-docs.conf /etc/nginx/security-headers-docs.conf
COPY --chown=nginx:nginx --chmod=755 --from=builder /app/nginx-ipv6.sh /docker-entrypoint.d/99-disable-ipv6.sh
COPY --chown=nginx:nginx --chmod=755 --from=builder /app/nginx-noindex.sh /docker-entrypoint.d/98-noindex.sh
COPY --chown=nginx:nginx --from=vendor /wasm /usr/share/nginx/html/wasm
COPY --chown=nginx:nginx config/config.json /usr/share/nginx/html/config.json
COPY --chown=nginx:nginx glue/ /usr/share/nginx/html/bau-pm/
RUN sed -i "s#__BAU_PM_SOURCE_URL__#${SOURCE_URL}/src/tag/${VERSION}#" /usr/share/nginx/html/bau-pm/handoff.js \
 && grep -q "${SOURCE_URL}" /usr/share/nginx/html/bau-pm/handoff.js \
 && mkdir -p /etc/nginx/tmp

EXPOSE 8080
HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD wget --spider -q http://127.0.0.1:8080/ || exit 1
CMD ["nginx", "-g", "daemon off;"]