# Stage 1: Base Image
FROM node:20-alpine AS base
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Stage 2: Dependencies
FROM base AS deps
COPY package.json package-lock.json* ./
RUN npm ci

# Stage 3: Builder
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production
ARG NEXT_PUBLIC_APP_URL=http://localhost:3000
ENV NEXT_PUBLIC_APP_URL=$NEXT_PUBLIC_APP_URL
# Umami Analytics - build-time (NEXT_PUBLIC_* is inlined by the compiler, and
# next.config.ts also reads NEXT_PUBLIC_UMAMI_SRC to widen the CSP)
ARG NEXT_PUBLIC_UMAMI_SRC=""
ARG NEXT_PUBLIC_UMAMI_ID=""
ENV NEXT_PUBLIC_UMAMI_SRC=$NEXT_PUBLIC_UMAMI_SRC
ENV NEXT_PUBLIC_UMAMI_ID=$NEXT_PUBLIC_UMAMI_ID
RUN npm run build

# Stage 4: Production Runner
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

RUN apk add --no-cache libc6-compat

# Docker CLI: lets the admin dashboard's "Docker Logs" page
# (src/app/api/admin/logs/stream) run `docker logs -f` against the host's
# Docker daemon for the app/postgres containers. Only useful if
# /var/run/docker.sock is bind-mounted in (see docker-compose.yml) — without
# the mount this binary is inert. su-exec is for docker-entrypoint-logs.sh's
# privilege drop, see below.
RUN apk add --no-cache docker-cli su-exec

# Security: Non-root user for the actual app process. The container itself
# still starts as root (no USER here) so docker-entrypoint-logs.sh can fix up
# /var/run/docker.sock permissions before dropping to nextjs — see that
# script for why. This is equivalent to root-level access to the Docker
# daemon (and thus the host) for anything that can execute code as nextjs;
# accepted trade-off for the live log viewer, see docker-compose.yml.
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

COPY --from=builder /app/public ./public

# Set correct permissions for prerender cache
RUN mkdir .next
RUN chown nextjs:nodejs .next

# Copy standalone build and static files
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

COPY docker-entrypoint-logs.sh /usr/local/bin/docker-entrypoint-logs.sh
RUN chmod +x /usr/local/bin/docker-entrypoint-logs.sh

EXPOSE 3000

ENTRYPOINT ["/usr/local/bin/docker-entrypoint-logs.sh"]
CMD ["node", "server.js"]