ARG CADDY_IMAGE=caddy:2.8.4-alpine
ARG NODE_IMAGE=node:21-alpine3.20

# ── Stage 1: Install server deps (tiny – only express+cors) ──────────────────
FROM $NODE_IMAGE AS server-deps
WORKDIR /srv
COPY server/package.json server/package-lock.json* ./
RUN npm install --omit=dev --no-audit --prefer-offline

# ── Stage 2: Production image (Caddy + Node.js) ───────────────────────────────
FROM $CADDY_IMAGE

# Install Node.js to run the Facebook OAuth2 microserver
RUN apk add --no-cache nodejs

# Copy pre-built React app (built on host with: npm run build / yarn build)
COPY build /ui/build

# Copy Caddy config
COPY Caddyfile /ui/Caddyfile

# Copy Node.js FB server + its deps
COPY server /ui/server
COPY --from=server-deps /srv/node_modules /ui/server/node_modules

# Copy entrypoint script
COPY docker-entrypoint.sh /ui/docker-entrypoint.sh
RUN chmod +x /ui/docker-entrypoint.sh

# Persistent volume for FB OAuth2 tokens (config.json)
VOLUME ["/data/fb"]

WORKDIR /ui

EXPOSE 3000

# Runtime environment variables (overridden at runtime via -e or docker-compose)
ENV CORE_ADDRESS=""
ENV YTDLP_URL=""
ENV FB_SERVER_URL=""
ENV YTDLP_HOST="192.168.1.20:8282"

CMD ["/ui/docker-entrypoint.sh"]