# Node-RED container with Dashboard 2.0 baked in
# Build once; restart containers freely. NR's automatic package.json install
# at boot is slow and requires internet; this Dockerfile install is cached
# and reproducible.
#
# Docker volume pattern: ./nodered:/data is a bind mount (settings.js,
# flows.json, start.sh, package.json are host-owned); /data/node_modules
# is an anonymous volume so the bind mount doesn't clobber the installed
# deps. Docker copies the image's node_modules into the volume on first start.

FROM nodered/node-red:5.0.0

# Install Dashboard 2.0 (and any future deps) at image-build time.
# Versions are pinned in infra/nodered/package.json for reproducibility.
# The NR base image defaults USER to node-red (uid 1000), so switch to root
# for the install (writes to /data/node_modules need root then chown).
USER root
COPY package.json /data/package.json
WORKDIR /data
RUN npm install --omit=dev --no-audit --no-fund \
 && chown -R 1000:1000 /data/node_modules \
 && echo "[Dockerfile] installed @flowfuse/node-red-dashboard"

# start.sh handles the SPA base-href patch (idempotent: grep guard).
# Inline-write + chmod so we don't hit the COPY-then-chmod permission issue
# (the base image's /data ACLs block chmod on COPY'd files even as root).
RUN printf "%s\n" \
    "#!/bin/sh" \
    "INDEX=/data/node_modules/@flowfuse/node-red-dashboard/dist/index.html" \
    "BASE_HREF=\"\${DASHBOARD_BASE_HREF:-/dashboard/}\"" \
    "if [ -f \"\$INDEX\" ] && ! grep -q \"<base href\" \"\$INDEX\"; then" \
    "    sed -i \"s|<meta name=\\\"description\\\"|<base href=\\\"\$BASE_HREF\\\">" \
    "    <meta name=\\\"description\\\"|\" \"\$INDEX\"" \
    "    echo \"[start.sh] PATCHED base href=\$BASE_HREF\"" \
    "fi" \
    "cd /usr/src/node-red" \
    "exec node \$NODE_OPTIONS node_modules/node-red/red.js \$FLOWS" \
    > /data/start.sh \
 && chmod +x /data/start.sh \
 && chown 1000:1000 /data/start.sh

# Drop back to NR's default user; userDir is /data via the compose volume mount.
USER node-red
WORKDIR /usr/src/node-red