# Stage 1: build
# Use the native build platform so npm ci never runs under QEMU emulation.
# The build output (static HTML/JS/CSS) is platform-independent.
# node:20-slim (Debian/glibc) avoids lightningcss musl binary resolution issues on Alpine.
FROM --platform=$BUILDPLATFORM node:20-slim AS builder

ARG VITE_STANDALONE=false
ENV VITE_STANDALONE=$VITE_STANDALONE

WORKDIR /app
COPY frontend/package*.json ./
RUN npm ci

COPY frontend/ .
COPY VERSION ../VERSION
RUN npm run build

# Stage 2: serve
FROM nginx:alpine

COPY --from=builder /app/dist /usr/share/nginx/html

# Nginx config: use standalone config (no backend proxy) or full config
ARG VITE_STANDALONE=false
COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
COPY docker/nginx.standalone.conf /etc/nginx/conf.d/nginx.standalone.conf
RUN if [ "$VITE_STANDALONE" = "true" ]; then \
      cp /etc/nginx/conf.d/nginx.standalone.conf /etc/nginx/conf.d/default.conf; \
    fi && \
    rm /etc/nginx/conf.d/nginx.standalone.conf

EXPOSE 80