# Production Dockerfile for Maternal Web (Next.js 15)
# Multi-stage build for security and optimization

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

# Copy package files
COPY package*.json ./
RUN npm ci --only=production

# Stage 2: Builder
FROM node:20-alpine AS builder
WORKDIR /app

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY package*.json ./
COPY tsconfig*.json ./
COPY next.config.js ./

# Copy source code
COPY app/ ./app/
COPY components/ ./components/
COPY contexts/ ./contexts/
COPY hooks/ ./hooks/
COPY lib/ ./lib/
COPY locales/ ./locales/
COPY public/ ./public/
COPY styles/ ./styles/
COPY types/ ./types/

# Set build-time environment variables
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_GRAPHQL_URL
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
ENV NEXT_PUBLIC_GRAPHQL_URL=${NEXT_PUBLIC_GRAPHQL_URL}

# Build the application
RUN npm run build

# Stage 3: Production Runner
FROM node:20-alpine AS runner
WORKDIR /app

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001

# Set production environment
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Copy necessary files from builder
COPY --from=builder --chown=nextjs:nodejs /app/next.config.js ./
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy locales for i18n
COPY --from=builder --chown=nextjs:nodejs /app/locales ./locales

# Switch to non-root user
USER nextjs

# Expose port (default 3000, configurable via PORT env var)
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:' + (process.env.PORT || 3000) + '/api/health', (r) => {r.statusCode === 200 ? process.exit(0) : process.exit(1)})"

# Use dumb-init to handle signals properly
ENTRYPOINT ["dumb-init", "--"]

# Start Next.js using the standalone server
CMD ["node", "server.js"]