# =============================================================================
# Dockerfile for Next.js 16 - Production Optimized for Coolify
# =============================================================================
# Multi-stage build for minimal image size and maximum performance
# Compatible with: Coolify, Docker Compose, Kubernetes
# Node Version: 20 LTS (Alpine)
# Package Manager: npm (native to project)
# =============================================================================

# -----------------------------------------------------------------------------
# Stage 1: Dependencies (deps)
# Install only production dependencies with locked versions
# -----------------------------------------------------------------------------
FROM node:20-alpine AS deps

# Install system dependencies required by Node.js native modules
RUN apk add --no-cache libc6-compat

WORKDIR /app

# Copy package files for dependency installation
COPY package.json package-lock.json ./

# Install dependencies with npm ci (clean install from lock file)
# This ensures reproducible builds and faster installs
RUN npm ci --only=production --ignore-scripts && \
    npm cache clean --force

# -----------------------------------------------------------------------------
# Stage 2: Builder (builder)
# Build the Next.js application with all dev dependencies
# -----------------------------------------------------------------------------
FROM node:20-alpine AS builder

# Install system dependencies for Prisma and build tools
RUN apk add --no-cache \
    libc6-compat \
    openssl

WORKDIR /app

# Copy package files
COPY package.json package-lock.json ./

# Install ALL dependencies (including devDependencies for build)
RUN npm ci --ignore-scripts && \
    npm cache clean --force

# Copy application source
COPY . .

# Set build-time environment variables
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

# Generate Prisma Client
RUN npx prisma generate

# Build Next.js application with standalone output
# This creates a minimal server bundle in .next/standalone
RUN npm run build

# -----------------------------------------------------------------------------
# Stage 3: Runner (production)
# Minimal runtime image with only necessary files
# -----------------------------------------------------------------------------
FROM node:20-alpine AS runner

# Install runtime dependencies
RUN apk add --no-cache \
    libc6-compat \
    openssl \
    wget \
    dumb-init && \
    rm -rf /var/cache/apk/*

WORKDIR /app

# Set production environment variables
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

# Create non-root user for security
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

# Copy Prisma runtime files
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/.prisma ./node_modules/.prisma
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/@prisma ./node_modules/@prisma

# Copy standalone Next.js server
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./

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

# Copy public directory
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

# Copy Prisma schema for runtime (if needed)
COPY --from=builder --chown=nextjs:nodejs /app/prisma ./prisma

# Copy scripts directory for seed and admin tools
COPY --from=builder --chown=nextjs:nodejs /app/scripts ./scripts

# Switch to non-root user
USER nextjs

# Expose application port
EXPOSE 3000

# Health check for container orchestration
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:3000/api/health || exit 1

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

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